CN103490968A

CN103490968A - Method and device for interconnecting across data centers in FCoE network

Info

Publication number: CN103490968A
Application number: CN201310421655.1A
Authority: CN
Inventors: 宋小恒
Original assignee: Hangzhou H3C Technologies Co Ltd
Current assignee: New H3C Technologies Co Ltd
Priority date: 2013-09-16
Filing date: 2013-09-16
Publication date: 2014-01-01
Anticipated expiration: 2033-09-16
Also published as: CN103490968B

Abstract

The invention discloses a method and device for interconnecting across data centers in an FCoE network. The method comprises the steps that home terminal FCF equipment establishes the VFC virtual connection between the home terminal FCF equipment and opposite terminal FCF equipment; after the home terminal FCF equipment receives a storage network message, an FC routing table is inquired through the ID of a terminal FC carried in the storage network message; if an inquired result is that the next hop of the storage network message is the opposite terminal FCF equipment, the home terminal FCF equipment determines an output interface of the storage network message to be in the VFC virtual connection, tunnel packaging is conducted on the storage network message, and the storage network message after tunnel packaging is sent to the opposite terminal FCF equipment. In the method and device for interconnecting across the data centers in the FCoE network, direct mutual connection between an SAN network and an LAN network among a plurality of data centers can be supported, virtual interconnection of the FCoE network inside the different data centers is achieved, larger access bandwidths among the data centers can be acquired, and the stability of the network is improved.

Description

In a kind of FCoE network across data center interconnected method and apparatus

Technical field

The present invention relates to communication technical field, especially related to a kind of FCoE(Fibre Channel over Ethernet, the optical-fibre channel based on Ethernet) in network across data center interconnected method and apparatus.

Background technology

FC(Fibre Channel, optical-fibre channel) be to apply more a kind of agreement in storage networking, purpose is to provide than Ethernet and TCP(Transmission Control Protocol, transmission control protocol)/IP(Internet Protocol, the agreement interconnected between network) agreement more at a high speed, efficiently large data transmission performance.FC combines traditional passage technology and network technology, has inherited the big data quantity high-speed transfer of passage technology, the low delay, the advantages such as superpower error detection capability are brought into play the route of network technology, extensibility simultaneously, the advantages such as managerial ability, become the popular protocol in storage area network.

In order to be LAN(Local Area Network, local area network (LAN) simultaneously) network provides service, and by SAN(Storage Area Network, storage area network) network completes memory function, industry has been introduced the FCoE technology.FCoE is carried on a kind of agreement on Ethernet by the FC agreement, in the FCoE solution, server only need to be used supports the Ethernet card of FCoE agreement to get final product, and the FCF(Fibre Channel over Ethernet Forwarder of support FCoE agreement, optical-fibre channel agency based on Ethernet) equipment can be replaced traditional ethernet switch and FC switch simultaneously, the quantity of network interface card, switch and connection cable is greatly reduced, alleviate the maintenance workload of the network operation simultaneously.

As shown in Figure 1, networking schematic diagram for the FCoE network, it is to realize that in data center inside I/O integrates that current FCoE more typically uses, ethernet link between FCF equipment and ENode equipment can be received and dispatched Ethernet message and FC message simultaneously, lan network and SAN network can be exchanged visits by FCF equipment, and the two can access ENode equipment simultaneously.Wherein, FCF equipment can be the FCF switch, and ENode is the node device that is supported in transmission FC agreement on Ethernet, comprises server, disk unit etc.

In prior art, the FCoE network is only supported the directly interconnected of the SAN network of a data central inner and lan network, and does not support the directly interconnected of SAN network between a plurality of data centers and lan network.

Summary of the invention

The embodiment of the present invention provides in a kind of FCoE network the method and apparatus interconnected across data center, to support the directly interconnected of SAN network between a plurality of data centers and lan network.

In order to achieve the above object, the embodiment of the present invention provides in a kind of Fibre Channel oE network based on Ethernet the method interconnected across data center, the method is applied to comprise that the optical-fibre channel of local terminal based on Ethernet act on behalf of in the FCoE network of FCF equipment and opposite end FCF equipment, described local terminal FCF equipment and described opposite end FCF equipment are positioned at different data centers, said method comprising the steps of:

Described local terminal FCF equipment is set up the virtual fiber passage VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, the FCoE MAC Address that the medium access control MAC Address of described VFC virtual connections is described opposite end FCF equipment;

Described local terminal FCF equipment is after receiving the storage networking message, by the purpose optical-fibre channel sign FC ID inquiry FC routing table of carrying in described storage networking message; If the down hop that Query Result is described storage networking message is described opposite end FCF equipment, described local terminal FCF equipment determines that the outgoing interface of described storage networking message is described VFC virtual connections, and described storage networking message is carried out to tunnel encapsulation, and the storage networking message after tunnel encapsulation is sent to described opposite end FCF equipment; After the storage networking message of described opposite end FCF equipment after receiving described tunnel encapsulation, storage networking message after described tunnel encapsulation is carried out to the tunnel decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the storage networking message after the tunnel decapsulation, and utilize the storage networking message after the outgoing interface inquired sends the tunnel decapsulation.

The embodiment of the present invention provides a kind of optical-fibre channel based on Ethernet to act on behalf of FCF equipment, as local terminal FCF equipment, be applied to comprise in the Fibre Channel oE network based on Ethernet of described local terminal FCF equipment and opposite end FCF equipment, described local terminal FCF equipment and described opposite end FCF equipment are positioned at different data centers, and described local terminal FCF equipment specifically comprises:

Set up module, for setting up the virtual fiber passage VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the medium access control MAC Address of the described VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment;

Processing module, for after receiving the storage networking message, by the purpose optical-fibre channel sign FC ID inquiry FC routing table of carrying in described storage networking message; If the down hop that Query Result is described storage networking message is described opposite end FCF equipment, determines that the outgoing interface of described storage networking message is described VFC virtual connections, and described storage networking message is carried out to tunnel encapsulation;

Sending module, send to described opposite end FCF equipment for the storage networking message by after tunnel encapsulation; After the storage networking message of described opposite end FCF equipment after receiving described tunnel encapsulation, storage networking message after described tunnel encapsulation is carried out to the tunnel decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the storage networking message after the tunnel decapsulation, and utilize the storage networking message after the outgoing interface inquired sends the tunnel decapsulation.

Compared with prior art, the embodiment of the present invention at least has the following advantages: in the embodiment of the present invention, in comprising the network of a plurality of data centers, pass through EVI(Ethernet Virtual Interconnection between a plurality of data centers, Ethernet connects virtual) network or MPLS(Multi Protocol Label Switching, multiprotocol label switching) network interconnection, with the EVI LINK(link based on the EVI network) set up VFC(Virtual Fibre Channel, the virtual fiber passage) virtual connections or the PW(Pseudowire based on the MPLS network, pseudo-line) virtual link is set up the VFC virtual connections, thereby support the directly interconnected of SAN network between a plurality of data centers and lan network, the FCoE network virtualization of realizing the different pieces of information central inner is interconnected, make between data center to obtain larger access bandwidth, promote network stabilization.

The accompanying drawing explanation

Fig. 1 is the networking schematic diagram of FCoE network of the prior art;

Fig. 2 be in the FCoE network that provides of the embodiment of the present invention across data center interconnected method flow diagram;

Fig. 3 passes through the networking diagram of the EVI network interconnection between the different pieces of information center in the embodiment of the present invention;

Fig. 4 passes through the networking diagram of the MPLS network interconnection between the different pieces of information center in the embodiment of the present invention;

Fig. 5 is the structural representation of a kind of FCF equipment of providing of the embodiment of the present invention.

Embodiment

The embodiment of the present invention provides in a kind of FCoE network the method interconnected across data center, the method is applied to comprise in the FCoE network of local terminal FCF equipment and opposite end FCF equipment, and local terminal FCF equipment and opposite end FCF equipment are positioned at different data centers, and as shown in Figure 2, the method comprises the following steps:

Step 201, local terminal FCF equipment is set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, the FCoE MAC Address that the MAC Address of this VFC virtual connections is opposite end FCF equipment.Further, opposite end FCF equipment is set up the VFC virtual connections between opposite end FCF equipment and local terminal FCF equipment, the FCoE MAC Address that the MAC Address of this VFC virtual connections is local terminal FCF equipment.

In the embodiment of the present invention, when between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is EVI LINK; Local terminal FCF equipment is set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, specifically comprises: local terminal FCF equipment sends the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK; After local terminal FCF equipment receives the discovery notification packet of opposite end FCF equipment for the response of discovery request message, utilize to find that the FCoE MAC Address of the opposite end FCF equipment that carries in notification packet sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is opposite end FCF equipment; Perhaps, local terminal FCF equipment receives the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by EVI LINK; Local terminal FCF equipment utilization finds that the FCoE MAC Address of the opposite end FCF equipment that carries in request message sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is opposite end FCF equipment; Local terminal FCF equipment sends the discovery notification packet of responding for the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK.Wherein, the protocol type in the head of the gre tunneling encapsulation of discovery request message and discovery notification packet identifies current message for setting up the VFC virtual connections.

In the embodiment of the present invention, when between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is the PW virtual link; Local terminal FCF equipment is set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, specifically comprises: local terminal FCF equipment sends the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link; After local terminal FCF equipment receives the discovery notification packet of opposite end FCF equipment for the response of discovery request message, utilize to find that the FCoE MAC Address of the opposite end FCF equipment that carries in notification packet sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is opposite end FCF equipment; Perhaps, local terminal FCF equipment receives the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by the PW virtual link; Local terminal FCF equipment utilization finds that the FCoE MAC Address of the opposite end FCF equipment that carries in request message sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is opposite end FCF equipment; Local terminal FCF equipment sends the discovery notification packet of responding for the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link.Wherein, find request message and find that the head of the MPLS tunnel encapsulation of notification packet comprises Flow Label label or Control Word label, and Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

Step 202, local terminal FCF equipment is after receiving the storage networking message, by the purpose FC ID inquiry FC routing table of carrying in the storage networking message.If the down hop that Query Result is the storage networking message is opposite end FCF equipment, the outgoing interface of determining the storage networking message is the VFC virtual connections, and the storage networking message is carried out to tunnel encapsulation, and the storage networking message after tunnel encapsulation is sent to opposite end FCF equipment.

Step 203, after the storage networking message of opposite end FCF equipment after receiving tunnel encapsulation, storage networking message after tunnel encapsulation is carried out to the tunnel decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the storage networking message after the tunnel decapsulation, and utilize the storage networking message after the outgoing interface inquired sends the tunnel decapsulation.The tunnel decapsulation mode of storage networking message is corresponding with its tunnel encapsulation.

In the embodiment of the present invention, when between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is EVI LINK; Local terminal FCF equipment carries out tunnel encapsulation to the storage networking message, and the storage networking message after tunnel encapsulation is sent to the process of opposite end FCF equipment, comprising:

When the storage networking message is the FC message, local terminal FCF equipment carries out the gre tunneling encapsulation to the FC message; Wherein, the IP address that the purpose IP address in the gre tunneling head is opposite end FCF equipment, the IP address that the source IP address in the gre tunneling head is local terminal FCF equipment, and the protocol type in the gre tunneling head is the FC message for identifying gre tunneling head load afterwards; Afterwards, local terminal FCF equipment sends to opposite end FCF equipment by the EVI LINK between local terminal FCF equipment and opposite end FCF equipment by the FC message after the gre tunneling encapsulation; After FC message by opposite end FCF equipment after receiving the gre tunneling encapsulation, FC message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the FC message after the gre tunneling decapsulation, and utilize the FC message after the outgoing interface inquired sends the gre tunneling decapsulation; Perhaps, when the storage networking message is the FCoE message, the MAC Address of local terminal FCF equipment utilization VFC virtual connections arranges the FCoE MAC Address that the target MAC (Media Access Control) address of FCoE message is opposite end FCF equipment, and the FCoE message is carried out to the gre tunneling encapsulation; Wherein, the IP address that the purpose IP address in the gre tunneling head is opposite end FCF equipment, the IP address that the source IP address in the gre tunneling head is local terminal FCF equipment, and the protocol type in the gre tunneling head is the FCoE message for identifying gre tunneling head load afterwards; Local terminal FCF equipment sends to opposite end FCF equipment by the EVI LINK between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the gre tunneling encapsulation; After FCoE message by opposite end FCF equipment after receiving the gre tunneling encapsulation, FCoE message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and during the target MAC (Media Access Control) address of the FCoE message after determining the gre tunneling decapsulation FCoE MAC Address that is opposite end FCF equipment, by the purpose FC ID inquiry FC routing table of carrying in the FCoE message after the gre tunneling decapsulation, and utilize the FCoE message after the outgoing interface inquired sends the gre tunneling decapsulation.

In the embodiment of the present invention, when between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is the PW virtual link; Local terminal FCF equipment carries out tunnel encapsulation to the storage networking message, the storage networking message after tunnel encapsulation is sent to the process of opposite end FCF equipment, comprising:

When the storage networking message is the FC message, local terminal FCF equipment carries out the MPLS tunnel encapsulation to the FC message; Wherein, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label, and Flow Label label or Control Word label are the FC message for the load identified after MPLS tunnel head; Local terminal FCF equipment sends to opposite end FCF equipment by the PW virtual link between local terminal FCF equipment and opposite end FCF equipment by the FC message after the MPLS tunnel encapsulation; After FC message by opposite end FCF equipment after receiving the MPLS tunnel encapsulation, FC message after the MPLS tunnel encapsulation is carried out to the decapsulation of MPLS tunnel, and by the purpose FC ID inquiry FC routing table of carrying in the FC message after the decapsulation of MPLS tunnel, and utilize the FC message after the outgoing interface inquired sends the decapsulation of MPLS tunnel; Perhaps, when the storage networking message is the FCoE message, the MAC Address of local terminal FCF equipment utilization VFC virtual connections arranges the FCoE MAC Address that the target MAC (Media Access Control) address of FCoE message is opposite end FCF equipment, and the FCoE message is carried out to the MPLS tunnel encapsulation; Wherein, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label, and Flow Label label or Control Word label are the FCoE message for the load identified after MPLS tunnel head; Local terminal FCF equipment sends to opposite end FCF equipment by the PW virtual link between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the MPLS tunnel encapsulation; After FCoE message by opposite end FCF equipment after receiving the MPLS tunnel encapsulation, FCoE message after the MPLS tunnel encapsulation is carried out to the gre tunneling decapsulation, and during the target MAC (Media Access Control) address of the FCoE message after the determining MPLS tunnel decapsulation FCoE MAC Address that is opposite end FCF equipment, by the purpose FC ID inquiry FC routing table of carrying in the FCoE message after the decapsulation of MPLS tunnel, and utilize the FCoE message after the outgoing interface inquired sends the decapsulation of MPLS tunnel.

In the embodiment of the present invention, local terminal FCF equipment and opposite end FCF equipment are positioned at different data centers, and can be by the EVI network interconnection or by the MPLS network interconnection between different data centers.Wherein, while between different data centers, passing through the EVI network interconnection, local terminal FCF equipment and opposite end FCF equipment are on the basis of the edge device as the FCoE network, also as the ED(Edge Device of EVI network, edge device) equipment, and have EVI LINK between local terminal FCF equipment and opposite end FCF equipment.While between different data centers, passing through the MPLS network interconnection, local terminal FCF equipment and opposite end FCF equipment are on the basis of the edge device as the FCoE network, also as the provider edge equipment of MPLS network, and there is the PW virtual link between local terminal FCF equipment and opposite end FCF equipment.

Situation one, as shown in Figure 3, between the different pieces of information center by the networking schematic diagram of the EVI network interconnection, each FCF equipment is as the edge device of FCoE network, simultaneously also as the ED equipment of EVI network, and between FCF equipment, exists EVI LINK to connect.Two the FCF equipment of take describe as example, and two FCF equipment are respectively FCF1 and FCF2.FCF1 is local terminal FCF equipment, and FCF2 is opposite end FCF equipment, or FCF2 is local terminal FCF equipment, and FCF1 is opposite end FCF equipment.For convenience of description, take FCF1 as local terminal FCF equipment, FCF2 is that opposite end FCF equipment is that example describes.

In this networking situation, for step 201, local terminal FCF equipment is set up the process of the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, specifically includes but not limited to following mode:

Mode one, by local terminal FCF equipment (FCF1), triggered and to be set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment (FCF2), this mode specifically comprises the steps:

Step 1, FCF1 generate for setting up the discovery request message of VFC virtual connections, carry the FCoE MAC Address of this FCF1 in this discovery request message, and this finds that request message is based on FIP(FCoE Initialization Protocol, the optical-fibre channel initializtion protocol based on Ethernet) the discovery request message.

Step 2, FCF1 are to finding that request message carries out GRE(Generic Route Encapsulation, generic route encapsulation) tunnel encapsulation.Wherein, in discovery request message after the gre tunneling encapsulation, the IP address that purpose IP address in the gre tunneling head is FCF2, the IP address that the source IP address in the gre tunneling head is FCF1, the protocol type in the gre tunneling head identifies current message for setting up the VFC virtual connections.

Step 3, FCF1 send to FCF2 by EVI LINK by the discovery request message after the gre tunneling encapsulation.Wherein, this EVI LINK is the EVI LINK between FCF1 and FCF2.

Concrete, in the FCoE network, between each FCF equipment, need to use FIP to carry out the establishment of long-range VFC virtual connections.Based on this, FCF1 can generate for setting up the discovery request message of VFC virtual connections, and this discovery request message is carried out to the gre tunneling encapsulation, and the discovery request message after the FCF2 transmission gre tunneling encapsulation of EVI LINK opposite end, to start to set up the VFC virtual connections.Wherein, carry the FCoE MAC Address of this FCF1 in this discovery request message, the IP address that the purpose IP address in the gre tunneling head is FCF2, the IP address that the source IP address in the gre tunneling head is FCF1; In addition, in order to distinguish with existing EVI data message, the protocol type in the gre tunneling head can be set to 0x8914, in order to identify current message, is the FIP protocol massages, and identifies current message for setting up the VFC virtual connections.

Further, after FCF1 passes through the discovery request message of EVI LINK after FCF2 sends the gre tunneling encapsulation, discovery request message after this gre tunneling encapsulation will carry out the IP forwarding on the EVI network, and due to the IP address that is FCF2, the purpose IP address in the gre tunneling head, so the discovery request message after this gre tunneling encapsulation finally can be forwarded to FCF2.

After step 4, the discovery request message of FCF2 after receiving the gre tunneling encapsulation, if the current message of identification protocol type identification is for setting up the VFC virtual connections, FCF2 carries out the tunnel decapsulation to the discovery request message after the gre tunneling encapsulation, to obtain finding request message, and the FCoE MAC Address of utilizing the FCF1 carried in this discovery request message sets up the VFC virtual connections between FCF2 and FCF1, and the MAC Address of this VFC virtual connections FCoE MAC Address that is FCF1.

Step 5, FCF2 generate for setting up the discovery notification packet of VFC virtual connections, carry the FCoE MAC Address of this FCF2 in this discovery notification packet, and this finds that notification packet is for finding the response message of request message, and this finds that notification packet is the discovery notification packet based on FIP.

Step 6, FCF2 carry out the gre tunneling encapsulation to this discovery notification packet.

Wherein, in discovery notification packet after the gre tunneling encapsulation, the IP address that purpose IP address in the gre tunneling head is FCF1, the IP address that the source IP address in the gre tunneling head is FCF2, and the protocol type in the gre tunneling head identifies current message for setting up the VFC virtual connections.

Step 7, FCF2 send to FCF1 by EVI LINK by the discovery notification packet after the gre tunneling encapsulation.Wherein, this EVI LINK is the EVI LINK between FCF2 and FCF1.

Concrete, in the FCoE network, between each FCF equipment, need to use FIP to carry out the establishment of long-range VFC virtual connections.Based on this, after the discovery request message of FCF2 after receiving the gre tunneling encapsulation, if the current message of identification protocol type identification is for setting up the VFC virtual connections, first bullet falls the gre tunneling head and parses the discovery request message, obtain and learn the FCoE MAC Address of FCF1, and set up the VFC virtual connections between FCF2 and FCF1, and the MAC Address of this VFC virtual connections FCoE MAC Address that is FCF1.Further, FCF2 generates for setting up the discovery notification packet of VFC virtual connections, and this discovery notification packet is carried out to the gre tunneling encapsulation, and the discovery notification packet after the FCF1 transmission gre tunneling encapsulation of EVI LINK opposite end, to set up the VFC virtual connections.Wherein, carry the FCoE MAC Address of this FCF2 in this discovery notification packet, the IP address that the purpose IP address in the gre tunneling head is FCF1, the IP address that the source IP address in the gre tunneling head is FCF2; In addition, in order to distinguish with existing EVI data message, the protocol type in the gre tunneling head can be set to 0x8914, in order to identify current message, is the FIP protocol massages, and identifies current message for setting up the VFC virtual connections.

Further, after FCF2 passes through the discovery notification packet of EVI LINK after FCF1 sends the gre tunneling encapsulation, discovery notification packet after this gre tunneling encapsulation will carry out the IP forwarding on the EVI network, and due to the IP address that is FCF1, the purpose IP address in the gre tunneling head, so the discovery notification packet after this gre tunneling encapsulation finally can be forwarded to FCF1.

After step 8, the discovery notification packet of FCF1 after receiving the gre tunneling encapsulation that FCF2 returns, if the current message of identification protocol type identification is for setting up the VFC virtual connections, FCF1 carries out the tunnel decapsulation to the discovery notification packet after gre tunneling encapsulation, to obtain finding notification packet, and the FCoE MAC Address of utilizing the FCF2 carried in this discovery notification packet sets up the VFC virtual connections between FCF1 and FCF2, and the MAC Address of the VFC virtual connections FCoE MAC Address that is FCF2.

In the embodiment of the present invention, FCF1 utilizes the FCoE MAC Address of the FCF2 carried in the discovery notification packet to set up in the process of the VFC virtual connections between FCF1 and FCF2, FCF2 periodically sends unsolicited discovery notification packet to FCF1, the gre tunneling packaged type of this unsolicited discovery notification packet is identical with the gre tunneling packaged type of finding notification packet, does not repeat them here; FCF1, after receiving the unsolicited discovery notification packet that FCF2 sends, utilizes the FCoE MAC Address of the FCF2 carried in the discovery notification packet to set up the VFC virtual connections between FCF1 and FCF2.FCF2 utilizes the FCoE MAC Address of the FCF1 carried in the discovery request message to set up in the process of the VFC virtual connections between FCF2 and FCF1, FCF1 periodically sends unsolicited discovery notification packet to FCF2, the gre tunneling packaged type of this unsolicited discovery notification packet is identical with the gre tunneling packaged type of finding request message, does not repeat them here; FCF2, after receiving the unsolicited discovery notification packet that FCF1 sends, utilizes the FCoE MAC Address of the FCF1 carried in the discovery request message to set up the VFC virtual connections between FCF2 and FCF1.

In the embodiment of the present invention, FCF1 and FCF2 also need to send by periodicity the VFC virtual connections that unsolicited discovery notification packet is safeguarded foundation.Concrete, FCF2 periodically sends unsolicited discovery notification packet to FCF1, if FCF1 does not at the appointed time receive the unsolicited discovery notification packet from FCF2 in interval, deletes the VFC virtual connections between FCF1 and FCF2.FCF1 periodically sends unsolicited discovery notification packet to FCF2, if FCF2 does not at the appointed time receive the unsolicited discovery notification packet from FCF1 in interval, deletes the VFC virtual connections between FCF2 and FCF1.

Mode two, by opposite end FCF equipment (FCF2), triggered and to be set up the VFC virtual connections between opposite end FCF equipment and local terminal FCF equipment (FCF1), this mode specifically comprises the steps:

Step 1, FCF2 generate for setting up the discovery request message of VFC virtual connections, and this discovery request message is carried out to the gre tunneling encapsulation, and by EVI LINK, the discovery request message after the gre tunneling encapsulation are sent to FCF1.Wherein, this EVI LINK is the EVI LINK between FCF2 and FCF1; Carry the FCoE MAC Address of this FCF2 in this discovery request message, this finds that request message is the discovery request message based on FIP; In discovery request message after the gre tunneling encapsulation, the IP address that purpose IP address in the gre tunneling head is FCF1, the IP address that source IP address in the gre tunneling head is FCF2, and the protocol type in the gre tunneling head identifies current message for setting up the VFC virtual connections.

Concrete, in the FCoE network, between each FCF equipment, need to use FIP to carry out the establishment of long-range VFC virtual connections.Based on this, FCF2 can generate for setting up the discovery request message of VFC virtual connections, and this discovery request message is carried out to the gre tunneling encapsulation, and the discovery request message after the FCF1 transmission gre tunneling encapsulation of EVI LINK opposite end, to start to set up the VFC virtual connections.Wherein, carry the FCoE MAC Address of this FCF2 in this discovery request message, the IP address that the purpose IP address in the gre tunneling head is FCF1, the IP address that the source IP address in the gre tunneling head is FCF2; In addition, in order to distinguish with existing EVI data message, the protocol type in the gre tunneling head can be set to 0x8914, in order to identify current message, is the FIP protocol massages, and identifies current message for setting up the VFC virtual connections.

Further, after FCF2 passes through the discovery request message of EVI LINK after FCF1 sends the gre tunneling encapsulation, discovery request message after this gre tunneling encapsulation will carry out the IP forwarding on the EVI network, and due to the IP address that is FCF1, the purpose IP address in the gre tunneling head, so the discovery request message after this gre tunneling encapsulation finally can be forwarded to FCF1.

After step 2, the discovery request message of FCF1 after receiving the gre tunneling encapsulation, if the current message of identification protocol type identification is for setting up the VFC virtual connections, FCF1 carries out the tunnel decapsulation to the discovery request message after the gre tunneling encapsulation, to obtain finding request message, and the FCoE MAC Address of utilizing the FCF2 carried in this discovery request message sets up the VFC virtual connections between FCF1 and FCF2, and the MAC Address of this VFC virtual connections FCoE MAC Address that is FCF2.

Step 3, FCF1 generate for setting up the discovery notification packet of VFC virtual connections, and this discovery notification packet is carried out to the gre tunneling encapsulation, and by EVI LINK, the discovery notification packet after the gre tunneling encapsulation are sent to FCF2.Wherein, carry the FCoE MAC Address of this FCF1 in this discovery notification packet, and this finds that notification packet is for finding the response message of request message, and this finds that notification packet is the discovery notification packet based on FIP; In discovery notification packet after the gre tunneling encapsulation, the IP address that purpose IP address in the gre tunneling head is FCF2, the IP address that source IP address in the gre tunneling head is FCF1, and the protocol type in the gre tunneling head identifies current message for setting up the VFC virtual connections.

Concrete, after the discovery request message of FCF1 after receiving the gre tunneling encapsulation, if the current message of identification protocol type identification is for setting up the VFC virtual connections, first bullet falls the gre tunneling head and parses the discovery request message, obtain and learn the FCoE MAC Address of FCF2, and set up the VFC virtual connections between FCF1 and FCF2, and the MAC Address of this VFC virtual connections FCoE MAC Address that is FCF2.Further, FCF1 generates for setting up the discovery notification packet of VFC virtual connections, and this discovery notification packet is carried out to the gre tunneling encapsulation, and the discovery notification packet after the FCF2 transmission gre tunneling encapsulation of EVI LINK opposite end, to set up the VFC virtual connections.Wherein, carry the FCoE MAC Address of this FCF1 in this discovery notification packet, the IP address that the purpose IP address in the gre tunneling head is FCF2, the IP address that the source IP address in the gre tunneling head is FCF1; In addition, in order to distinguish with existing EVI data message, the protocol type in the gre tunneling head can be set to 0x8914, in order to identify current message, is the FIP protocol massages, and identifies current message for setting up the VFC virtual connections.

Further, after FCF1 passes through the discovery notification packet of EVI LINK after FCF2 sends the gre tunneling encapsulation, discovery notification packet after this gre tunneling encapsulation will carry out the IP forwarding on the EVI network, and due to the IP address that is FCF2, the purpose IP address in the gre tunneling head, so the discovery notification packet after this gre tunneling encapsulation finally can be forwarded to FCF2.

After step 4, the discovery notification packet of FCF2 after receiving the gre tunneling encapsulation that FCF1 returns, if the current message of identification protocol type identification is for setting up the VFC virtual connections, FCF2 carries out the tunnel decapsulation to the discovery notification packet after gre tunneling encapsulation, to obtain finding notification packet, and the FCoE MAC Address of utilizing the FCF1 carried in this discovery notification packet sets up the VFC virtual connections between FCF2 and FCF1, and the MAC Address of the VFC virtual connections FCoE MAC Address that is FCF1.

In the embodiment of the present invention, FCF1 utilizes the FCoE MAC Address of the FCF2 carried in the discovery request message to set up in the process of the VFC virtual connections between FCF1 and FCF2, FCF2 periodically sends unsolicited discovery notification packet to FCF1, the gre tunneling packaged type of this unsolicited discovery notification packet is identical with the gre tunneling packaged type of finding notification packet, does not repeat them here; FCF1, after receiving the unsolicited discovery notification packet that FCF2 sends, utilizes the FCoE MAC Address of the FCF2 carried in the discovery request message to set up the VFC virtual connections between FCF1 and FCF2.FCF2 utilizes the FCoE MAC Address of the FCF1 carried in the discovery notification packet to set up in the process of the VFC virtual connections between FCF2 and FCF1, FCF1 periodically sends unsolicited discovery notification packet to FCF2, the gre tunneling packaged type of this unsolicited discovery notification packet is identical with the gre tunneling packaged type of finding request message, does not repeat them here; FCF2, after receiving the unsolicited discovery notification packet that FCF1 sends, utilizes the FCoE MAC Address of the FCF1 carried in the discovery notification packet to set up the VFC virtual connections between FCF2 and FCF1.

Based on above-mentioned processing, between FCF1 and FCF2 after having set up the VFC virtual connections, the VFC virtual connections is equivalent to FCF1 or the FCF2 VFC interface in local maintenance, and FCF1 or FCF2 can send the FC message in data center or FCoE message to another data center.

As shown in Figure 3, FCF1 and FCF2 are in different data centers.FCF1 is connected respectively with LAN1, SAN1, ENODE1 in data center 1 inside; LAN1 is Ethernet, and the message between FCF1 and CE1 is two layers of Ethernet message; SAN1 is the storing fiber optic net, and the message between FCF1 and FC1 is the FC message; ENODE1 is for supporting the equipment of FCoE, and the message between FCF1 and ENDOE1 is two layers of Ethernet message and FCoE message.FCF2 is connected respectively with LAN2, SAN2, ENODE2 in data center 2 inside; LAN2 is Ethernet, and the message between FCF2 and CE2 is two layers of Ethernet message; SAN2 is the storing fiber optic net, and the message between FCF2 and FC2 is the FC message; ENODE2 is for supporting the point device of FCoE, and the message between FCF2 and ENDOE2 is two layers of Ethernet message and FCoE message.

In the embodiment of the present invention, set up the VFC virtual connections between FCF1 and FCF2 on FCF1, and after having set up the VFC virtual connections between FCF2 and FCF1 on FCF2, MAC Address and FC route between two data centers will be carried out synchronous and learning process.Further, the MAC Address between two data centers synchronously need to be by EVI ISIS(Intermediate System to Intermediate System, Intermediate System-to-Intermediate System) agreement completes; FC routing iinformation between two data centers will be directly by FSPF(Fabric Shortest Path First, the optical fiber SPF) agreement completes, and the EVI network can transparent transmission FSPF protocol massages to realize the FC route learning at different pieces of information center.Based on this, the MAC Address in the LAN2 network in data center 2 is arranged on FCF1, the FC routing iinformation in the SAN2 in data center 2 is arranged on FCF1.In addition, the MAC Address in the LAN1 network in data center 1 is arranged on FCF2, the FC routing iinformation in the SAN1 in data center 1 is arranged on FCF2.

It should be noted that, accessing across data center between LAN1 and LAN2, between LAN1 and ENDOE2 is the access between common two layers of Ethernet across data center's access, does not repeat them here.

For accessing across data center between SAN1 and ENODE2, its process comprises the following steps:

Step 1, FC1 receive the FC message from main frame in the SAN1 network, utilize the purpose FC ID carried in this FC message to inquire about local FC routing table, the VFC interface that if its outgoing interface is FC1 to be connected with FCF1, by this VFC interface by this FC message repeating to FCF1.

Step 2, FCF1 receive the FC message from FC1, utilize the purpose FC ID carried in this FC message to inquire about local FC routing table, if the down hop that Query Result is the FC message is FCF2, FCF1 determines that the outgoing interface of FC message is the VFC virtual connections.

Step 3, FCF1 carry out the gre tunneling encapsulation to the FC message, and by the EVI LINK between FCF1 and FCF2, the FC message after the gre tunneling encapsulation are sent to FCF2.

In the embodiment of the present invention, the IP address that purpose IP address in the gre tunneling head is FCF2, the IP address that source IP address in the gre tunneling head is FCF1, and the protocol type in the gre tunneling head is the FC message for identifying gre tunneling head load afterwards, as the protocol type by the gre tunneling head is set to 0x8906, take for identifying gre tunneling head load afterwards is the FC message.Further, after FCF1 sends the FC message after gre tunneling encapsulates by EVI LINK to FCF2, the FC message after this gre tunneling encapsulation will carry out the IP forwarding on the EVI network; Due to the IP address that is FCF2, the purpose IP address in the gre tunneling head, so the FC message after the gre tunneling encapsulation can be transmitted to FCF2.

After step 4, the FC message of FCF2 after receiving the gre tunneling encapsulation, if the identification protocol type is the FC message for identifying gre tunneling head load afterwards, the FC message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, bullet falls the gre tunneling head, and triggers FCoE and search.

The purpose FC ID carried in step 5, the FCF2 FC message after by the gre tunneling decapsulation inquires about local FC routing table; If the interface that the outgoing interface that Query Result is the FC message is FCF2 and ENODE2, FCF2 is transmitted to ENODE2 after the FC message is packaged into to the FCoE form.

After step 6, ENODE2 receive the message of FCoE form, if need to, to main frame back message using in the SAN1 network, to FCF2, send the FCoE message.Wherein, the FCoE MAC Address that the target MAC (Media Access Control) address of this FCoE message is FCF2, the MAC Address that source MAC is ENODE2.

Step 7, FCF2 receive the FCoE message from ENODE2, and the target MAC (Media Access Control) address FCoE MAC Address that is this FCF2, trigger FCoE and search, and utilize the purpose FC ID carried in this FCoE message to inquire about local FC routing table; If the down hop that Query Result is the FCoE message is FCF1, FCF2 determines that the outgoing interface of FCoE message is the VFC virtual connections, and the target MAC (Media Access Control) address that utilizes the MAC Address of VFC virtual connections that the FCoE message the is set FCoE MAC Address that is FCF1.

Step 8, FCF2 carry out the gre tunneling encapsulation to the FCoE message, and by the EVI LINK between FCF2 and FCF1, the FCoE message after the gre tunneling encapsulation are sent to FCF1.

In the embodiment of the present invention, the IP address that purpose IP address in the gre tunneling head is FCF1, the IP address that source IP address in the gre tunneling head is FCF2, and the protocol type in the gre tunneling head is the FCoE message for identifying gre tunneling head load afterwards, as the protocol type by the gre tunneling head is set to 0x8907, take for identifying gre tunneling head load afterwards is the FCoE message.After FCF2 sends the FCoE message after gre tunneling encapsulates by EVI LINK to FCF1, the FCoE message after this gre tunneling encapsulation will carry out the IP forwarding on the EVI network; Due to the IP address that is FCF1, the purpose IP address in the gre tunneling head, so the FCoE message after the gre tunneling encapsulation can be transmitted to FCF1.

After step 9, the FCoE message of FCF1 after receiving the gre tunneling encapsulation, if the identification protocol type is the FCoE message for identifying gre tunneling head load afterwards, the FCoE message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, bullet falls the gre tunneling head, and triggers FCoE and search.

During FCoE MAC Address that the target MAC (Media Access Control) address of step 10, the FCF1 FCoE message after determining the gre tunneling decapsulation is this FCF1, by the purpose FC ID carried in the FCoE message after the gre tunneling decapsulation, inquire about local FC routing table; If the interface that the outgoing interface that Query Result is the FCoE message is FCF1 and FC1, FCF1 is transmitted to FC1 after the FCoE message is packaged into to the FC form.

Step 11, FC1 are after the FC message of receiving from FCF1, utilize the purpose FC ID carried in this FC message to inquire about local FC routing table, if its outgoing interface is the interface that FC1 is connected with main frame in the SAN1 network, by this interface by this FC message repeating to main frame in the SAN1 network.

For accessing across data center between SAN1 and SAN2, its process comprises the following steps:

The purpose FC ID carried in step 5, the FCF2 FC message after by the gre tunneling decapsulation inquires about local FC routing table; If the interface that the outgoing interface that Query Result is the FC message is FCF2 and FC2, FCF2 is transmitted to FC2 after the FC message is packaged into to the FC form.

Step 6, FC2 are after the FC message of receiving from FCF2, utilize the purpose FC ID carried in this FC message to inquire about local FC routing table, if its outgoing interface is the interface that FC2 is connected with main frame in the SAN2 network, by this interface by this FC message repeating to main frame in the SAN2 network.

Further, FC2 receives the FC message from main frame in the SAN2 network, utilize the purpose FC ID carried in this FC message to inquire about local FC routing table, if the VFC interface that its outgoing interface is FC2 to be connected with FCF2, by this VFC interface by this FC message repeating to FCF2.

Step 7, FCF2 receive the FC message from FCF2, utilize the purpose FC ID carried in this FC message to inquire about local FC routing table, if the down hop that Query Result is the FC message is FCF1, FCF2 determines that the outgoing interface of FC message is the VFC virtual connections.

Step 8, FCF2 carry out the gre tunneling encapsulation to the FC message, and by the EVI LINK between FCF2 and FCF1, the FC message after the gre tunneling encapsulation are sent to FCF1.

In the embodiment of the present invention, the IP address that purpose IP address in the gre tunneling head is FCF1, the IP address that source IP address in the gre tunneling head is FCF2, and the protocol type in the gre tunneling head is the FC message for identifying gre tunneling head load afterwards, as the protocol type by the gre tunneling head is set to 0x8906, take for identifying gre tunneling head load afterwards is the FC message.Further, after FCF2 sends the FC message after gre tunneling encapsulates by EVI LINK to FCF1, the FC message after this gre tunneling encapsulation will carry out the IP forwarding on the EVI network; Due to the IP address that is FCF1, the purpose IP address in the gre tunneling head, so the FC message after the gre tunneling encapsulation can be transmitted to FCF1.

After step 9, the FC message of FCF1 after receiving the gre tunneling encapsulation, if the identification protocol type is the FC message for identifying gre tunneling head load afterwards, the FC message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, bullet falls the gre tunneling head, and triggers FCoE and search.

The purpose FC ID carried in step 10, the FCF1 FC message after by the gre tunneling decapsulation inquires about local FC routing table; If the interface that the outgoing interface that Query Result is the FC message is FCF1 and FC1, FCF1 is transmitted to FC1 after the FC message is packaged into to the FC form.

Situation two, as shown in Figure 4, for passing through the networking schematic diagram of the MPLS network interconnection between the different pieces of information center, each FCF equipment is as the edge device of FCoE network, and also as the provider edge equipment of MPLS network, FCF equipment is supported MPLS business and FCoE business simultaneously.Have the PW virtual link between local terminal FCF equipment and opposite end FCF equipment, this PW virtual link is Layer2VPN(Layer2Virtual Private Network, two-layer virtual private network) PW.Two the FCF equipment of take describe as example, and two FCF equipment are respectively FCF1 and FCF2.FCF1 is local terminal FCF equipment, and FCF2 is opposite end FCF equipment, or FCF2 is local terminal FCF equipment, and FCF1 is opposite end FCF equipment.For convenience of description, take FCF1 as local terminal FCF equipment, FCF2 is that opposite end FCF equipment is that example describes.

Step 1, FCF1 generate for setting up the discovery request message based on the FIP agreement of VFC virtual connections, and the FCoE MAC Address of carrying this FCF1 in this discovery request message.

Step 2, FCF1 carry out the MPLS tunnel encapsulation to this discovery request message.Wherein, in discovery request message after the MPLS tunnel encapsulation, MPLS tunnel head comprises public network Tunnel(tunnel) label (being outer layer label), PW VC label (being vpn label), Flow Label(stream label) label or Control Word(control word) label; Further, above-mentioned Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

In the embodiment of the present invention, the label technique that current PW virtual link is adopted is expanded, on the public network Tunnel label adopted at current PW virtual link and the basis of PW VC label, for PW virtual link configuration Control Word label or Flowe Label label, by Flow Label label or the current message of Control Word tag identifier, to be used for setting up the VFC virtual connections.

Step 3, FCF1 send to FCF2 by the PW virtual link by the discovery request message after the MPLS tunnel encapsulation.Wherein, this PW virtual link is the PW virtual link between FCF1 and FCF2.

Concrete, in the FCoE network, between each FCF equipment, need to use FIP to carry out the establishment of long-range VFC virtual connections.Based on this, FCF1 can generate for setting up the discovery request message of VFC virtual connections, this discovery request message is carried out to the MPLS tunnel encapsulation, and the discovery request message after the FCF2 transmission MPLS tunnel encapsulation of PW virtual link opposite end, to start to set up the VFC virtual connections.Wherein, carry the FCoE MAC Address of this FCF1 in this discovery request message, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label, and Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

Further, after FCF1 sends the discovery request message after the MPLS tunnel encapsulation by the PW virtual link to FCF2, the discovery request message after this MPLS tunnel encapsulation will carry out label forwarding at the MPLS network; Discovery request message after the MPLS tunnel encapsulation carries out label forwarding with public network Tunnel label in the MPLS network, and the discovery request message after the MPLS tunnel encapsulation finally can be forwarded to FCF2.

After step 4, the FCF2 discovery request message after receiving the MPLS tunnel encapsulation, if identification Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections, the discovery request message after the MPLS tunnel encapsulation is carried out to the tunnel decapsulation, to obtain finding request message, and FCoE MAC Address that utilize to find the FCF1 that carries in request message sets up the VFC virtual connections between FCF2 and FCF1, and the MAC Address of this VFC virtual connections FCoE MAC Address that is FCF1.

In the embodiment of the present invention, need configuration Flow Label label or Control Word label on FCF1 and FCF2 in advance, comprise and send Flow Label label and receive Flow Lable label or send Control Word label and receive Control Word label.Wherein, the transmission Flow Lable label of FCF1 equals the reception Flow Label label of FCF2, and the reception Flow Lable label of FCF1 equals the transmission Flow Label label of FCF2; Perhaps, the transmission Control Word label of FCF1 equals the reception Control Word label of FCF2, and the reception Control Word label of FCF1 equals the transmission Control Word label of FCF2.Based on this, after FCF2 receives the discovery request message after the MPLS tunnel encapsulation, MPLS tunnel head comprises PW VC label, Flow Label label or Control Word label, and FCF2 can be used for setting up the VFC virtual connections according to PW VC label, Flow Label label or Control Word tag recognition Flow Label label or the current message of Control Word tag identifier.

Step 6, FCF2 carry out the MPLS tunnel encapsulation to this discovery notification packet.Wherein, in the discovery notification packet after the MPLS tunnel encapsulation, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label; Further, above-mentioned Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

Step 7, FCF2 send to FCF1 by the PW virtual link by the discovery notification packet after the MPLS tunnel encapsulation.Wherein, this PW virtual link is the PW virtual link between FCF2 and FCF1.

Concrete, in the FCoE network, between each FCF equipment, need to use FIP to carry out the establishment of long-range VFC virtual connections.Based on this, FCF1 can generate for setting up the discovery notification packet of VFC virtual connections, and this discovery notification packet is carried out to the MPLS tunnel encapsulation, and the discovery notification packet after the FCF1 transmission MPLS tunnel encapsulation of PW virtual link opposite end, to set up the VFC virtual connections.Wherein, carry the FCoE MAC Address of this FCF2 in this discovery notification packet, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label, and Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

Further, after FCF2 sends the discovery notification packet after the MPLS tunnel encapsulation by the PW virtual link to FCF1, the discovery notification packet after this MPLS tunnel encapsulation will carry out label forwarding at the MPLS network; Discovery notification packet after the MPLS tunnel encapsulation carries out label forwarding with public network Tunnel label in the MPLS network, and the discovery notification packet after the MPLS tunnel encapsulation finally can be forwarded to FCF1.

After step 8, the FCF1 discovery notification packet after receiving the MPLS tunnel encapsulation, if identification Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections, the discovery notification packet after the MPLS tunnel encapsulation is carried out to the tunnel decapsulation, to obtain finding notification packet, and FCoE MAC Address that utilize to find the FCF2 that carries in notification packet sets up the VFC virtual connections between FCF1 and FCF2, and the MAC Address of the VFC virtual connections FCoE MAC Address that is FCF2.

In the embodiment of the present invention, FCF1 utilizes the FCoE MAC Address of the FCF2 carried in the discovery notification packet to set up in the process of the VFC virtual connections between FCF1 and FCF2, FCF2 periodically sends unsolicited discovery notification packet to FCF1, the MPLS tunnel encapsulation mode of this unsolicited discovery notification packet is identical with the MPLS tunnel encapsulation mode of finding notification packet, does not repeat them here; FCF1, after receiving the unsolicited discovery notification packet that FCF2 sends, utilizes the FCoE MAC Address of the FCF2 carried in the discovery notification packet to set up the VFC virtual connections between FCF1 and FCF2.FCF2 utilizes the FCoE MAC Address of the FCF1 carried in the discovery request message to set up in the process of the VFC virtual connections between FCF2 and FCF1, FCF1 periodically sends unsolicited discovery notification packet to FCF2, the MPLS tunnel encapsulation mode of this unsolicited discovery notification packet is identical with the MPLS tunnel encapsulation mode of finding request message, does not repeat them here; FCF2, after receiving the unsolicited discovery notification packet that FCF1 sends, utilizes the FCoE MAC Address of the FCF1 carried in the discovery request message to set up the VFC virtual connections between FCF2 and FCF1.

Step 1, FCF2 generate for setting up the discovery request message based on the FIP agreement of VFC virtual connections, and the FCoE MAC Address of carrying this FCF2 in this discovery request message.

Step 2, FCF2 carry out the MPLS tunnel encapsulation to this discovery request message.Wherein, in the discovery request message after the MPLS tunnel encapsulation, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label; Further, above-mentioned Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

Step 3, FCF2 send to FCF1 by the PW virtual link by the discovery request message after the MPLS tunnel encapsulation.Wherein, this PW virtual link is the PW virtual link between FCF2 and FCF1.

After step 4, the FCF1 discovery request message after receiving the MPLS tunnel encapsulation, if identification Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections, the discovery request message after the MPLS tunnel encapsulation is carried out to the tunnel decapsulation, to obtain finding request message, and FCoE MAC Address that utilize to find the FCF2 that carries in request message sets up the VFC virtual connections between FCF1 and FCF2, and the MAC Address of this VFC virtual connections FCoE MAC Address that is FCF2.

Step 5, FCF1 generate for setting up the discovery notification packet of VFC virtual connections, carry the FCoE MAC Address of this FCF1 in this discovery notification packet, and this finds that notification packet is for finding the response message of request message, and this finds that notification packet is the discovery notification packet based on FIP.

Step 6, FCF1 carry out the MPLS tunnel encapsulation to this discovery notification packet.Wherein, in the discovery notification packet after the MPLS tunnel encapsulation, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label; Further, above-mentioned Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

Step 7, FCF1 send to FCF2 by the PW virtual link by the discovery notification packet after the MPLS tunnel encapsulation.Wherein, this PW virtual link is the PW virtual link between FCF1 and FCF2.

After step 8, the FCF2 discovery notification packet after receiving the MPLS tunnel encapsulation, if identification Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections, the discovery notification packet after the MPLS tunnel encapsulation is carried out to the tunnel decapsulation, to obtain finding notification packet, and FCoE MAC Address that utilize to find the FCF1 that carries in notification packet sets up the VFC virtual connections between FCF2 and FCF1, and the MAC Address of the VFC virtual connections FCoE MAC Address that is FCF1.

In the embodiment of the present invention, FCF1 utilizes the FCoE MAC Address of the FCF2 carried in the discovery request message to set up in the process of the VFC virtual connections between FCF1 and FCF2, FCF2 periodically sends unsolicited discovery notification packet to FCF1, the MPLS tunnel encapsulation mode of this unsolicited discovery notification packet is identical with the MPLS tunnel encapsulation mode of finding notification packet, does not repeat them here; FCF1, after receiving the unsolicited discovery notification packet that FCF2 sends, utilizes the FCoE MAC Address of the FCF2 carried in the discovery request message to set up the VFC virtual connections between FCF1 and FCF2.FCF2 utilizes the FCoE MAC Address of the FCF1 carried in the discovery notification packet to set up in the process of the VFC virtual connections between FCF2 and FCF1, FCF1 periodically sends unsolicited discovery notification packet to FCF2, the MPLS tunnel encapsulation mode of this unsolicited discovery notification packet is identical with the MPLS tunnel encapsulation mode of finding request message, does not repeat them here; FCF2, after receiving the unsolicited discovery notification packet that FCF1 sends, utilizes the FCoE MAC Address of the FCF1 carried in the discovery notification packet to set up the VFC virtual connections between FCF2 and FCF1.

It should be noted that, said process has elaborated the process of setting up the VFC virtual connections between FCF1 and FCF2, correspondingly, for setting up the process of VFC virtual connections between the process, FCF2 and the FCF3 that set up the VFC virtual connections between FCF1 and FCF3, in the embodiment of the present invention, repeat no more.

As shown in Figure 4, FCF1, FCF2 and FCF3 are in different data centers.Wherein, FCF1 is connected respectively with LAN1, SAN1, ENODE1 in data center 1 inside; LAN1 is Ethernet, and the message between FCF1 and CE1 is two layers of Ethernet message; SAN1 is the storing fiber optic net, and the message between FCF1 and FC1 is the FC message; ENODE1 is for supporting the equipment of FCoE, and the message between FCF1 and ENDOE1 is two layers of Ethernet message and FCoE message.FCF2 is connected respectively with SAN2, ENODE2 in data center 2 inside; SAN2 is the storing fiber optic net, and the message between FCF2 and FC2 is the FC message; ENODE2 is for supporting the point device of FCoE, and the message between FCF2 and ENDOE2 is two layers of Ethernet message and FCoE message.FCF3 is connected respectively with LAN3, SAN3, ENODE3 in data center 3 inside; LAN3 is Ethernet, and the message between FCF3 and CE3 is two layers of Ethernet message; SAN3 is the storing fiber optic net, and the message between FCF3 and FC3 is the FC message; ENODE3 is for supporting the point device of FCoE, and the message between FCF3 and ENDOE3 is two layers of Ethernet message and FCoE message.

The example that is treated to FCF1 and FCF2, in the embodiment of the present invention, set up the VFC virtual connections between FCF1 and FCF2 on FCF1, and after having set up the VFC virtual connections between FCF2 and FCF1 on FCF2, MAC Address and FC route between two data centers will be carried out synchronous and learning process.Further, the MAC Address between two data centers synchronously need to be completed by EVI ISIS agreement; FC routing iinformation between two data centers will directly be completed by the FSPF agreement, and EVI network transparent transmission FSPF protocol massages is to realize the FC route learning at different pieces of information center.Based on this, the FC routing iinformation in the SAN2 in data center 2 is arranged on FCF1.In addition, the MAC Address in the LAN1 network in data center 1 is arranged on FCF2, the FC routing iinformation in the SAN1 in data center 1 is arranged on FCF2.

Step 3, FCF1 carry out the MPLS tunnel encapsulation to the FC message, and by the PW virtual link between FCF1 and FCF2, the FC message after the MPLS tunnel encapsulation are sent to FCF2.

In the embodiment of the present invention, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label, and Flow Label label or Control Word label are FC message or FCoE message for the load identified after MPLS tunnel head.

In the embodiment of the present invention, for carrying FC message and FCoE message on the PW virtual link, the label technique that current PW virtual link is adopted is expanded, on the public network Tunnel label adopted at current PW virtual link and the basis of PW VC label, can increase in PW VC label back a Control Word label or Flowe Label label, be FC message or FCoE message for identifying MPLS tunnel head load afterwards.Wherein, the Control Word label that the FC message adopts with the FCoE message is different, or the Flowe Label label that the FC message adopts with the FCoE message is different.

Further, for carrying FC message and FCoE message on the PW virtual link, the label technique that need to adopt current PW virtual link is expanded, and is PW virtual link configuration Flowe Label label or Control Word label.Based on this, need to be by PW virtual link and all VSAN(virtual memory local area network (LAN)s) example carries out associatedly, allows the VLAN ID in all VSAN examples to pass through.

In the embodiment of the present invention, after FCF1 sends the FC message after the MPLS tunnel encapsulation by the PW virtual link to FCF2, the FC message after this MPLS tunnel encapsulation will carry out label forwarding at the MPLS network; FC message after the MPLS tunnel encapsulation carries out label forwarding with public network Tunnel label in the MPLS network, and the FC message after the MPLS tunnel encapsulation finally can be forwarded to FCF2.

After step 4, the FCF2 FC message after receiving the MPLS tunnel encapsulation, if identification Flow Label label or Control Word label are the FC message for identifying MPLS tunnel head load afterwards, FCF2 carries out the decapsulation of MPLS tunnel to the FC message after the MPLS tunnel encapsulation, be that the FCF2 bullet falls MPLS tunnel head, and trigger FCoE and search.

The purpose FC ID carried in step 5, the FCF2 FC message after by the decapsulation of MPLS tunnel inquires about local FC routing table; If the interface that the outgoing interface that Query Result is the FC message is FCF2 and ENODE2, FCF2 is transmitted to ENODE2 after the FC message is packaged into to the FCoE form.

Step 8, FCF2 carry out the MPLS tunnel encapsulation to the FCoE message, and by the PW virtual link between FCF2 and FCF1, the FCoE message after the MPLS tunnel encapsulation are sent to FCF1.

In the embodiment of the present invention, MPLS tunnel head comprises public network Tunnel label, PW VC label, Flow Label label or Control Word label, and Flow Label label or Control Word label are FC message or FCoE message for the load identified after MPLS tunnel head.Wherein, for carrying FC message and FCoE message on the PW virtual link, the label technique that current PW virtual link is adopted is expanded, on the public network Tunnel label adopted at current PW virtual link and the basis of PW VC label, can increase in PW VC label back a Control Word label or Flowe Label label, be FC message or FCoE message for identifying MPLS tunnel head load afterwards.

Further, after FCF2 sends the FCoE message after the MPLS tunnel encapsulation by the PW virtual link to FCF1, the FCoE message after this MPLS tunnel encapsulation will carry out label forwarding at the MPLS network; FCoE message after the MPLS tunnel encapsulation carries out label forwarding with public network Tunnel label in the MPLS network, and the FCoE message after the MPLS tunnel encapsulation finally can be forwarded to FCF1.

After step 9, the FCF1 FCoE message after receiving the MPLS tunnel encapsulation, if if identification Flow Label label or Control Word label are the FCoE message for identifying MPLS tunnel head load afterwards, the FCoE message of FCF1 after to the MPLS tunnel encapsulation carries out the decapsulation of MPLS tunnel, be that the FCF1 bullet falls MPLS tunnel head, and trigger FCoE and search.

During FCoE MAC Address that the target MAC (Media Access Control) address of step 10, the FCF1 FCoE message after determining MPLS tunnel decapsulation is this FCF1, by the purpose FC ID carried in the FCoE message after the decapsulation of MPLS tunnel, inquire about local FC routing table; If the interface that the outgoing interface that Query Result is the FCoE message is FCF1 and FC1, FCF1 is transmitted to FC1 after the FCoE message is packaged into to the FC form.

Inventive concept based on same with said method, a kind of FCF equipment also is provided in the embodiment of the present invention, as local terminal FCF equipment, be applied to comprise in the Fibre Channel oE network based on Ethernet of described local terminal FCF equipment and opposite end FCF equipment, described local terminal FCF equipment and described opposite end FCF equipment are positioned at different data centers, as shown in Figure 5, described local terminal FCF equipment specifically comprises:

Set up module 11, for setting up the virtual fiber passage VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the medium access control MAC Address of the described VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Processing module 12, for after receiving the storage networking message, by the purpose optical-fibre channel sign FC ID inquiry FC routing table of carrying in described storage networking message; If the down hop that Query Result is described storage networking message is described opposite end FCF equipment, determines that the outgoing interface of described storage networking message is described VFC virtual connections, and described storage networking message is carried out to tunnel encapsulation; Sending module 13, send to described opposite end FCF equipment for the storage networking message by after tunnel encapsulation; After the storage networking message of described opposite end FCF equipment after receiving described tunnel encapsulation, storage networking message after described tunnel encapsulation is carried out to the tunnel decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the storage networking message after the tunnel decapsulation, and utilize the storage networking message after the outgoing interface inquired sends the tunnel decapsulation.

When between data center, by Ethernet, connecting the virtual EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is EVI link LINK; The described module 11 of setting up, specifically for sending the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK; After receiving the discovery notification packet of opposite end FCF equipment for described discovery request message response, utilize the FCoE MAC Address of the opposite end FCF equipment carried in described discovery notification packet to set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the described VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Wherein, the protocol type in the head of the generic route encapsulation gre tunneling of described discovery request message and described discovery notification packet encapsulation identifies current message for setting up the VFC virtual connections; Perhaps, receive the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by EVI LINK; Utilize to find that the FCoE MAC Address of the opposite end FCF equipment that carries in request message sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Send the discovery notification packet of responding for described discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK; Wherein, the protocol type in the head of the gre tunneling of described discovery request message and described discovery notification packet encapsulation identifies current message for setting up the VFC virtual connections.

When between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is EVI LINK; Described processing module 12, specifically for when described storage networking message is the FC message, carry out the gre tunneling encapsulation to described FC message, and the protocol type in the gre tunneling head is the FC message for identifying gre tunneling head load afterwards; Described sending module 13, send to described opposite end FCF equipment specifically for the EVI LINK by between local terminal FCF equipment and opposite end FCF equipment by the FC message after the gre tunneling encapsulation; Perhaps, described processing module 12, specifically for when described storage networking message is the FCoE message, the FCoE MAC Address that the target MAC (Media Access Control) address that utilizes the MAC Address of described VFC virtual connections that described FCoE message is set is described opposite end FCF equipment, and described FCoE message is carried out to the gre tunneling encapsulation, and the protocol type in the gre tunneling head is the FCoE message for identifying gre tunneling head load afterwards; Described sending module 13, send to described opposite end FCF equipment specifically for the EVI LINK by between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the gre tunneling encapsulation.

When between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is EVI LINK; Described FCF equipment also comprises: receiver module 14, and for receiving the FC message after the gre tunneling encapsulation that opposite end FCF equipment sends by EVI LINK, and the protocol type in the gre tunneling head is the FC message for the load identified after the gre tunneling head; Described processing module 12, also for after the FC message after receiving the gre tunneling encapsulation, if the identification protocol type is the FC message for identifying gre tunneling head load afterwards, the FC message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the FC message after the gre tunneling decapsulation; Described sending module 13, the outgoing interface also inquired for utilization sends the FC message after the gre tunneling decapsulation; Perhaps, described FCF equipment also comprises: receiver module 14, and for receiving the FCoE message after the gre tunneling encapsulation that opposite end FCF equipment sends by EVI LINK, and the protocol type in the gre tunneling head is the FCoE message for the load identified after the gre tunneling head; Described processing module 12, also for after the FCoE message after receiving the gre tunneling encapsulation, if the identification protocol type is the FCoE message for the load identified after the gre tunneling head, the FCoE message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and during the target MAC (Media Access Control) address of the FCoE message after determining the gre tunneling decapsulation FCoE MAC Address that is local terminal FCF equipment, by the purpose FC ID inquiry FC routing table of carrying in the FCoE message after the gre tunneling decapsulation; Described sending module 13, the outgoing interface also inquired for utilization sends the FCoE message after the gre tunneling decapsulation.

When between data center during by the multiprotocol label switching MPLS network interconnection, there is pseudo-line PW virtual link between local terminal FCF equipment and opposite end FCF equipment; The described module 11 of setting up, specifically for sending the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link; After receiving the discovery notification packet of opposite end FCF equipment for described discovery request message response, utilize the FCoE MAC Address of the opposite end FCF equipment carried in described discovery notification packet to set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Wherein, the head of the MPLS tunnel encapsulation of described discovery request message and described discovery notification packet comprises stream label Flow Label label or control word Control Word label, and described Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections; Perhaps, receive the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by the PW virtual link; Utilize to find that the FCoE MAC Address of the opposite end FCF equipment that carries in request message sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is opposite end FCF equipment; Send the discovery notification packet of responding for described discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link; Wherein, the head of the MPLS tunnel encapsulation of described discovery request message and described discovery notification packet comprises Flow Label label or Control Word label, and Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.

When between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is the PW virtual link; Described processing module 12, specifically for when described storage networking message is the FC message, described FC message is carried out to the MPLS tunnel encapsulation, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FC message; Described sending module 13, send to described opposite end FCF equipment specifically for the PW virtual link by between local terminal FCF equipment and opposite end FCF equipment by the FC message after the MPLS tunnel encapsulation; Perhaps, described processing module 12, specifically for when described storage networking message is the FCoE message, the FCoE MAC Address that the target MAC (Media Access Control) address that utilizes the MAC Address of described VFC virtual connections that described FCoE message is set is described opposite end FCF equipment, and described FCoE message is carried out to the MPLS tunnel encapsulation, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FCoE message; Described sending module 13, send to described opposite end FCF equipment specifically for the PW virtual link by between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the MPLS tunnel encapsulation.

When between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, there is the PW virtual link; Described FCF equipment also comprises: receiver module 14, for receiving the FC message after the MPLS tunnel encapsulation that opposite end FCF equipment sends by the PW virtual link, and MPLS tunnel head comprises Flow Label label or Control Word label that the load for identifying after MPLS tunnel head is the FC message; Described processing module 12, also for after the FC message after receiving the MPLS tunnel encapsulation, if identification Flow Label label or Control Word label are the FC message for the load identified after MPLS tunnel head, the FC message after the MPLS tunnel encapsulation is carried out to the decapsulation of MPLS tunnel, and by the purpose FC ID inquiry FC routing table of carrying in the FC message after the decapsulation of MPLS tunnel; Described sending module 13, the outgoing interface also inquired for utilization sends the FC message after the decapsulation of MPLS tunnel; Perhaps, described FCF equipment also comprises receiver module 14, for receiving the FCoE message after the MPLS tunnel encapsulation that opposite end FCF equipment sends by the PW virtual link, MPLS tunnel head comprises Flow Label label or the Control Word label that the load for identifying after MPLS tunnel head is the FCoE message; Described processing module 12, also for after the FCoE message after receiving the MPLS tunnel encapsulation, if identification Flow Label label or Control Word label are the FCoE message for identifying MPLS tunnel head load afterwards, the FCoE message after the MPLS tunnel encapsulation is carried out to the decapsulation of MPLS tunnel, and during the target MAC (Media Access Control) address of the FCoE message after the determining MPLS tunnel decapsulation FCoE MAC Address that is local terminal FCF equipment, by the purpose FC ID inquiry FC routing table of carrying in the FCoE message after the decapsulation of MPLS tunnel; Described sending module 13, the outgoing interface also inquired for utilization sends the FCoE message after the decapsulation of MPLS tunnel.

Wherein, the modules of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.

Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) the described method of execution each embodiment of the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.

The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.

Above disclosed be only several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims

In a Fibre Channel oE network based on Ethernet across data center interconnected method, the method is applied to comprise that the optical-fibre channel of local terminal based on Ethernet act on behalf of in the FCoE network of FCF equipment and opposite end FCF equipment, described local terminal FCF equipment and described opposite end FCF equipment are positioned at different data centers, it is characterized in that, said method comprising the steps of:

Described local terminal FCF equipment is set up the virtual fiber passage VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, the FCoE MAC Address that the medium access control MAC Address of described VFC virtual connections is described opposite end FCF equipment;

Described local terminal FCF equipment is after receiving the storage networking message, by the purpose optical-fibre channel sign FC ID inquiry FC routing table of carrying in described storage networking message; If the down hop that Query Result is described storage networking message is described opposite end FCF equipment, described local terminal FCF equipment determines that the outgoing interface of described storage networking message is described VFC virtual connections, and described storage networking message is carried out to tunnel encapsulation, and the storage networking message after tunnel encapsulation is sent to described opposite end FCF equipment; After the storage networking message of described opposite end FCF equipment after receiving described tunnel encapsulation, storage networking message after described tunnel encapsulation is carried out to the tunnel decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the storage networking message after the tunnel decapsulation, and utilize the storage networking message after the outgoing interface inquired sends the tunnel decapsulation.
2. the method for claim 1, is characterized in that, when between data center, by Ethernet, connecting the virtual EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has EVI link LINK; Described local terminal FCF equipment is set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, specifically comprises:

Described local terminal FCF equipment sends the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK; After local terminal FCF equipment receives the discovery notification packet of opposite end FCF equipment for described discovery request message response, utilize the FCoE MAC Address of the opposite end FCF equipment carried in described discovery notification packet to set up the VFC virtual connections between described local terminal FCF equipment and described opposite end FCF equipment, and the MAC Address of the described VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Wherein, the protocol type in the head of the generic route encapsulation gre tunneling of described discovery request message and described discovery notification packet encapsulation identifies current message for setting up the VFC virtual connections; Perhaps,

Described local terminal FCF equipment receives the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by EVI LINK; The FCoE MAC Address of the opposite end FCF equipment carried in the described discovery request message of described local terminal FCF equipment utilization is set up the VFC virtual connections between described local terminal FCF equipment and described opposite end FCF equipment, and the MAC Address of the described VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Described local terminal FCF equipment sends the discovery notification packet of responding for described discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK; Wherein, the protocol type in the head of the gre tunneling of described discovery request message and described discovery notification packet encapsulation identifies current message for setting up the VFC virtual connections.
3. the method for claim 1, is characterized in that, when between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has EVI LINK;

Described local terminal FCF equipment carries out tunnel encapsulation to described storage networking message, and the storage networking message after tunnel encapsulation is sent to the process of described opposite end FCF equipment, specifically comprises:

When described storage networking message is the FC message, described local terminal FCF equipment carries out the gre tunneling encapsulation to described FC message, and the protocol type in the gre tunneling head is the FC message for identifying gre tunneling head load afterwards; Afterwards, described local terminal FCF equipment sends to described opposite end FCF equipment by the EVI LINK between local terminal FCF equipment and opposite end FCF equipment by the FC message after the gre tunneling encapsulation;

Perhaps,

When described storage networking message is the FCoE message, the MAC Address of the described VFC virtual connections of described local terminal FCF equipment utilization arranges the FCoE MAC Address that the target MAC (Media Access Control) address of described FCoE message is described opposite end FCF equipment, and described FCoE message is carried out to the gre tunneling encapsulation, and the protocol type in the gre tunneling head is the FCoE message for identifying gre tunneling head load afterwards; Afterwards, described local terminal FCF equipment sends to described opposite end FCF equipment by the EVI LINK between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the gre tunneling encapsulation.
4. the method for claim 1, is characterized in that, when between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has EVI LINK; Described local terminal FCF equipment is set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, also comprises afterwards:

Described local terminal FCF equipment receives the FC message after the gre tunneling encapsulation that opposite end FCF equipment sends by EVI LINK, and the protocol type in the gre tunneling head is the FC message for the load identified after the gre tunneling head; After FC message after receiving the gre tunneling encapsulation, if the identification protocol type is the FC message for identifying gre tunneling head load afterwards, the FC message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the FC message after the gre tunneling decapsulation, and utilize the FC message after the outgoing interface inquired sends the gre tunneling decapsulation;

Perhaps,

Described local terminal FCF equipment receives the FCoE message after the gre tunneling encapsulation that opposite end FCF equipment sends by EVI LINK, and the protocol type in the gre tunneling head is the FCoE message for the load identified after the gre tunneling head; After the FCoE message of described local terminal FCF equipment after receiving the gre tunneling encapsulation, if the identification protocol type is the FCoE message for the load identified after the gre tunneling head, the FCoE message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and during the target MAC (Media Access Control) address of the FCoE message after determining the gre tunneling decapsulation FCoE MAC Address that is local terminal FCF equipment, the purpose FC ID inquiry FC routing table of carrying in the FCoE message of described local terminal FCF equipment after by the gre tunneling decapsulation, utilize the FCoE message after the outgoing interface inquired sends the gre tunneling decapsulation.
5. the method for claim 1, is characterized in that, when between data center during by the multiprotocol label switching MPLS network interconnection, has pseudo-line PW virtual link between local terminal FCF equipment and opposite end FCF equipment; Described local terminal FCF equipment is set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, specifically comprises:

Described local terminal FCF equipment sends the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link; After local terminal FCF equipment receives the discovery notification packet of opposite end FCF equipment for described discovery request message response, utilize the FCoE MAC Address of the opposite end FCF equipment carried in described discovery notification packet to set up the VFC virtual connections between described local terminal FCF equipment and described opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Wherein, the head of the MPLS tunnel encapsulation of described discovery request message and described discovery notification packet comprises stream label Flow Label label or control word Control Word label, and described Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections;

Perhaps,

Described local terminal FCF equipment receives the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by the PW virtual link; The FCoE MAC Address of the opposite end FCF equipment carried in the described discovery request message of described local terminal FCF equipment utilization is set up the VFC virtual connections between described local terminal FCF equipment and described opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Local terminal FCF equipment sends the discovery notification packet of responding for described discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link; Wherein, the head of the MPLS tunnel encapsulation of described discovery request message and described discovery notification packet comprises Flow Label label or Control Word label, and described Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.
6. the method for claim 1, is characterized in that, when between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has the PW virtual link;

Described local terminal FCF equipment carries out tunnel encapsulation to described storage networking message, and the storage networking message after tunnel encapsulation is sent to the process of described opposite end FCF equipment, specifically comprises:

When described storage networking message is the FC message, described local terminal FCF equipment carries out the MPLS tunnel encapsulation to described FC message, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FC message; Afterwards, described local terminal FCF equipment sends to described opposite end FCF equipment by the PW virtual link between local terminal FCF equipment and opposite end FCF equipment by the FC message after the MPLS tunnel encapsulation; Perhaps,

When described storage networking message is the FCoE message, the MAC Address of the described VFC virtual connections of described local terminal FCF equipment utilization arranges the FCoE MAC Address that the target MAC (Media Access Control) address of described FCoE message is described opposite end FCF equipment, and described FCoE message is carried out to the MPLS tunnel encapsulation, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FCoE message; Afterwards, described local terminal FCF equipment sends to described opposite end FCF equipment by the PW virtual link between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the MPLS tunnel encapsulation.
7. the method for claim 1, is characterized in that, when between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has the PW virtual link; Described local terminal FCF equipment also comprises after setting up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment:

FC message after the MPLS tunnel encapsulation that described local terminal FCF equipment reception opposite end FCF equipment sends by the PW virtual link, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FC message; After the FC message of described local terminal FCF equipment after receiving the MPLS tunnel encapsulation, if identification Flow Label label or Control Word label are the FC message for the load identified after MPLS tunnel head, the FC message after the MPLS tunnel encapsulation is carried out to the decapsulation of MPLS tunnel, and, by the purpose FC ID inquiry FC routing table of carrying in the FC message after the decapsulation of MPLS tunnel, utilize the FC message after the outgoing interface inquired sends the decapsulation of MPLS tunnel; Perhaps,

FCoE message after the MPLS tunnel encapsulation that described local terminal FCF equipment reception opposite end FCF equipment sends by the PW virtual link, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FCoE message, after the FCoE message of described local terminal FCF equipment after receiving the MPLS tunnel encapsulation, if identification Flow Label label or Control Word label are the FCoE message for identifying MPLS tunnel head load afterwards, the FCoE message after the MPLS tunnel encapsulation is carried out to the decapsulation of MPLS tunnel, and during the target MAC (Media Access Control) address of the FCoE message after the determining MPLS tunnel decapsulation FCoE MAC Address that is local terminal FCF equipment, by the purpose FC ID inquiry FC routing table of carrying in the FCoE message after the decapsulation of MPLS tunnel, the outgoing interface that utilization inquires sends the FCoE message after the decapsulation of MPLS tunnel.
8. the optical-fibre channel based on Ethernet is acted on behalf of FCF equipment, as local terminal FCF equipment, be applied to comprise in the Fibre Channel oE network based on Ethernet of described local terminal FCF equipment and opposite end FCF equipment, described local terminal FCF equipment and described opposite end FCF equipment are positioned at different data centers, it is characterized in that, described local terminal FCF equipment specifically comprises:

Set up module, for setting up the virtual fiber passage VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the medium access control MAC Address of the described VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment;

Processing module, for after receiving the storage networking message, by the purpose optical-fibre channel sign FC ID inquiry FC routing table of carrying in described storage networking message; If the down hop that Query Result is described storage networking message is described opposite end FCF equipment, determines that the outgoing interface of described storage networking message is described VFC virtual connections, and described storage networking message is carried out to tunnel encapsulation;

Sending module, send to described opposite end FCF equipment for the storage networking message by after tunnel encapsulation; After the storage networking message of described opposite end FCF equipment after receiving described tunnel encapsulation, storage networking message after described tunnel encapsulation is carried out to the tunnel decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the storage networking message after the tunnel decapsulation, and utilize the storage networking message after the outgoing interface inquired sends the tunnel decapsulation.
9. FCF equipment as claimed in claim 8, is characterized in that, when between data center, by Ethernet, connecting the virtual EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has EVI link LINK;

The described module of setting up, specifically for sending the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK; After receiving the discovery notification packet of opposite end FCF equipment for described discovery request message response, utilize the FCoE MAC Address of the opposite end FCF equipment carried in described discovery notification packet to set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the described VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Wherein, the protocol type in the head of the generic route encapsulation gre tunneling of described discovery request message and described discovery notification packet encapsulation identifies current message for setting up the VFC virtual connections; Perhaps,

Receive the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by EVI LINK; Utilize to find that the FCoE MAC Address of the opposite end FCF equipment that carries in request message sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Send the discovery notification packet of responding for described discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by EVI LINK; Wherein, the protocol type in the head of the gre tunneling of described discovery request message and described discovery notification packet encapsulation identifies current message for setting up the VFC virtual connections.
10. FCF equipment as claimed in claim 8, is characterized in that, when between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has EVI LINK;

Described processing module, specifically for when described storage networking message is the FC message, carry out the gre tunneling encapsulation to described FC message, and the protocol type in the gre tunneling head is the FC message for identifying gre tunneling head load afterwards;

Described sending module, send to described opposite end FCF equipment specifically for the EVI LINK by between local terminal FCF equipment and opposite end FCF equipment by the FC message after the gre tunneling encapsulation;

Perhaps,

Described processing module, specifically for when described storage networking message is the FCoE message, the FCoE MAC Address that the target MAC (Media Access Control) address that utilizes the MAC Address of described VFC virtual connections that described FCoE message is set is described opposite end FCF equipment, and described FCoE message is carried out to the gre tunneling encapsulation, and the protocol type in the gre tunneling head is the FCoE message for identifying gre tunneling head load afterwards;

Described sending module, send to described opposite end FCF equipment specifically for the EVI LINK by between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the gre tunneling encapsulation.
11. FCF equipment as claimed in claim 8, is characterized in that, when between data center, passing through the EVI network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has EVI LINK;

Described FCF equipment also comprises: receiver module, and for receiving the FC message after the gre tunneling encapsulation that opposite end FCF equipment sends by EVI LINK, and the protocol type in the gre tunneling head is the FC message for the load identified after the gre tunneling head;

Described processing module, also for after the FC message after receiving the gre tunneling encapsulation, if the identification protocol type is the FC message for identifying gre tunneling head load afterwards, the FC message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and by the purpose FC ID inquiry FC routing table of carrying in the FC message after the gre tunneling decapsulation;

Described sending module, the outgoing interface also inquired for utilization sends the FC message after the gre tunneling decapsulation;

Perhaps,

Described FCF equipment also comprises: receiver module, and for receiving the FCoE message after the gre tunneling encapsulation that opposite end FCF equipment sends by EVI LINK, and the protocol type in the gre tunneling head is the FCoE message for the load identified after the gre tunneling head;

Described processing module, also for after the FCoE message after receiving the gre tunneling encapsulation, if the identification protocol type is the FCoE message for the load identified after the gre tunneling head, the FCoE message after the gre tunneling encapsulation is carried out to the gre tunneling decapsulation, and during the target MAC (Media Access Control) address of the FCoE message after determining the gre tunneling decapsulation FCoE MAC Address that is local terminal FCF equipment, by the purpose FC ID inquiry FC routing table of carrying in the FCoE message after the gre tunneling decapsulation;

Described sending module, the outgoing interface also inquired for utilization sends the FCoE message after the gre tunneling decapsulation.
12. FCF equipment as claimed in claim 8, is characterized in that, when between data center during by the multiprotocol label switching MPLS network interconnection, has pseudo-line PW virtual link between local terminal FCF equipment and opposite end FCF equipment;

The described module of setting up, specifically for sending the discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link; After receiving the discovery notification packet of opposite end FCF equipment for described discovery request message response, utilize the FCoE MAC Address of the opposite end FCF equipment carried in described discovery notification packet to set up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is described opposite end FCF equipment; Wherein, the head of the MPLS tunnel encapsulation of described discovery request message and described discovery notification packet comprises stream label Flow Label label or control word Control Word label, and described Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections; Perhaps,

Receive the discovery request message from the FCoE MAC Address of carrying opposite end FCF equipment of opposite end FCF equipment by the PW virtual link; Utilize to find that the FCoE MAC Address of the opposite end FCF equipment that carries in request message sets up the VFC virtual connections between local terminal FCF equipment and opposite end FCF equipment, and the MAC Address of the VFC virtual connections FCoE MAC Address that is opposite end FCF equipment; Send the discovery notification packet of responding for described discovery request message of the FCoE MAC Address of carrying local terminal FCF equipment to opposite end FCF equipment by the PW virtual link; Wherein, the head of the MPLS tunnel encapsulation of described discovery request message and described discovery notification packet comprises Flow Label label or Control Word label, and Flow Label label or the current message of Control Word tag identifier are for setting up the VFC virtual connections.
13. FCF equipment as claimed in claim 8, is characterized in that, when between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has the PW virtual link;

Described processing module, specifically for when described storage networking message is the FC message, described FC message is carried out to the MPLS tunnel encapsulation, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FC message;

Described sending module, send to described opposite end FCF equipment specifically for the PW virtual link by between local terminal FCF equipment and opposite end FCF equipment by the FC message after the MPLS tunnel encapsulation;

Perhaps,

Described processing module, specifically for when described storage networking message is the FCoE message, the FCoE MAC Address that the target MAC (Media Access Control) address that utilizes the MAC Address of described VFC virtual connections that described FCoE message is set is described opposite end FCF equipment, and described FCoE message is carried out to the MPLS tunnel encapsulation, and MPLS tunnel head comprises for identifying Flow Label label or the Control Word label that head load afterwards in MPLS tunnel is the FCoE message;

Described sending module, send to described opposite end FCF equipment specifically for the PW virtual link by between local terminal FCF equipment and opposite end FCF equipment by the FCoE message after the MPLS tunnel encapsulation.
14. FCF equipment as claimed in claim 8, is characterized in that, when between data center, passing through the MPLS network interconnection, between local terminal FCF equipment and opposite end FCF equipment, has the PW virtual link;

Described FCF equipment also comprises: receiver module, for receiving the FC message after the MPLS tunnel encapsulation that opposite end FCF equipment sends by the PW virtual link, and MPLS tunnel head comprises Flow Label label or Control Word label that the load for identifying after MPLS tunnel head is the FC message;

Described processing module, also for after the FC message after receiving the MPLS tunnel encapsulation, if identification Flow Label label or Control Word label are the FC message for the load identified after MPLS tunnel head, the FC message after the MPLS tunnel encapsulation is carried out to the decapsulation of MPLS tunnel, and by the purpose FC ID inquiry FC routing table of carrying in the FC message after the decapsulation of MPLS tunnel;

Described sending module, the outgoing interface also inquired for utilization sends the FC message after the decapsulation of MPLS tunnel;

Perhaps,

Described FCF equipment also comprises receiver module, for receiving the FCoE message after the MPLS tunnel encapsulation that opposite end FCF equipment sends by the PW virtual link, MPLS tunnel head comprises Flow Label label or the Control Word label that the load for identifying after MPLS tunnel head is the FCoE message;

Described processing module, also for after the FCoE message after receiving the MPLS tunnel encapsulation, if identification Flow Label label or Control Word label are the FCoE message for identifying MPLS tunnel head load afterwards, the FCoE message after the MPLS tunnel encapsulation is carried out to the decapsulation of MPLS tunnel, and during the target MAC (Media Access Control) address of the FCoE message after the determining MPLS tunnel decapsulation FCoE MAC Address that is local terminal FCF equipment, by the purpose FC ID inquiry FC routing table of carrying in the FCoE message after the decapsulation of MPLS tunnel;

Described sending module, the outgoing interface also inquired for utilization sends the FCoE message after the decapsulation of MPLS tunnel.