WO2016015496A1 - 一种网络互通的方法及设备 - Google Patents

一种网络互通的方法及设备 Download PDF

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Publication number
WO2016015496A1
WO2016015496A1 PCT/CN2015/077467 CN2015077467W WO2016015496A1 WO 2016015496 A1 WO2016015496 A1 WO 2016015496A1 CN 2015077467 W CN2015077467 W CN 2015077467W WO 2016015496 A1 WO2016015496 A1 WO 2016015496A1
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Prior art keywords
port
fcoe
identifier information
message
sent
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PCT/CN2015/077467
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English (en)
French (fr)
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宋伟
陈昊
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华为技术有限公司
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Publication of WO2016015496A1 publication Critical patent/WO2016015496A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and device for network interworking.
  • FC-SAN Fibre Channel Storage Area Network
  • N_Port an N-port (English: N_Port) device and a Fibre Channel network (English: FC Fabric).
  • the N-Port device can be configured with An FC device of a Host Bus Adapter (HBA), which may be a host or a storage device.
  • HBA Host Bus Adapter
  • the N-Port device needs to register with the FC fabric during initialization.
  • the FC fabric allocates an N-port identifier (English: N_Port_ID) to the N-Port device for identifying the N-Port device in subsequent communication.
  • N_Port_ID N-port identifier
  • VN2VN_Port The virtual N-port to virtual N-port (English: Virtual N_Port to Virtual N_Port, abbreviated as VN2VN_Port) network is a new networking form of Fibre Channel over Ethernet (FCoE) network.
  • FCoE Fibre Channel over Ethernet
  • FIG. 1 it is a schematic diagram of a VN2VN network in the prior art.
  • the port of the FCoE device is a special N_Port, which is called VN2VN_Port or VN_Port.
  • VN-Port (English: FCoE node, abbreviation: ENode), such as ENode 1, ENode 2, Enode 3 are interconnected through Lossless Ethernet Network (English: Lossless Ethernet Network) without the support of FCoE switches.
  • each ENode directly negotiates network parameters such as VN_Port_ID, without the participation of the FCoE forwarding device (English: FCoE forwarder, FCF). Therefore, the VN2VN networking has the disadvantages of simple networking, low cost, and simple maintenance.
  • VN2VN network of the prior art cannot access the FC device, and therefore the interworking of the FCoE device with the VN-Port and the FC device with the N-Port cannot be realized.
  • the problem to be solved by the present invention is to provide a method and device for interworking between networks, which can realize interworking between an FCoE device having a VN-Port and an FC device having an N-Port at a low cost.
  • an embodiment of the present invention provides a network interworking method, where the method is applied to a gateway device, where the gateway device includes a virtual N-port-virtual N-port network access port (VN2VN_Port) and a Fibre Channel network access port. (F_Port), the gateway device accesses the lossless Ethernet network through the VN2VN_Port, and communicates with the Fibre Channel FC device having the N port N_Port through the F_Port, the method includes:
  • the identifier information includes a global unique port name (English: World Wide Port Name) An abbreviation: WWPN), an N-port ID (N_Port ID), and a medium access control (MAC) address, wherein the N_Port ID is used to communicate with the FC device or the FC device and the non-destructive
  • the FCoE device in the Ethernet network identifies the FC device when communicating; the N_Port ID configured for the FC device is the same as the generation rule of the port identifier VN2VN_Port ID of the FCoE device;
  • the FLOGI Accept message carries the identifier information.
  • the configuring the identifier information for the FC device according to the FLOGI message includes:
  • N_Port Name N_Port Name
  • the multicast request to the FCoE device in the lossless Ethernet network to send the probe request including the identifier information includes:
  • the correspondence between the identification information includes:
  • the method further includes:
  • a domain name server port identifier information request (English: Name Server Get N_Port_ID with Feathre Type, NS GID_FT) message, where the NS GID_FT message is used to request identifier information of the neighboring node of the FC device;
  • the NS GID_FT Accept message carries the identifier information of the neighboring node of the FC device.
  • the NS GID_FT Accept message carries the message of the name of the neighboring node of the FC device.
  • the method further includes:
  • the method further includes:
  • the identifier information of the neighbor node that updates the FC device includes:
  • the method further includes:
  • a registration state change notification (English: Registered State Change Notification, RSCN) message, where the RSCN message is used to indicate that the identifier information of the neighboring node of the FC device is updated;
  • RSCN Registered State Change Notification
  • NS GID_FT Accept message Sending an NS GID_FT Accept message to the FC device, where the NS GID_FT Accept message carries the updated identifier information of the neighboring node of the FC device.
  • the method further includes:
  • the FC data packet is encapsulated into an FCoE data packet that includes the destination MAC address and the source destination MAC address, and the FCoE data packet is sent to the FCoE device corresponding to the destination MAC address.
  • a gateway device for network interworking includes a VN2VN_Port and an F_Port, and the gateway device accesses a lossless Ethernet network through the VN2VN_Port port, and passes the The F_Port port communicates with the FC device having the N_Port, and the gateway device further includes:
  • a receiving unit configured to receive a FLOGI message sent by the FC device
  • a configuration unit configured to: after the receiving unit receives the FLOGI message, configure identifier information for the FC device according to the FLOGI; the identifier information includes a WWPN, an N_Port ID, and a MAC address, where the N_Port ID And identifying the FC device when the FC device communicates with another FC device or the FC device communicates with an FCoE device in the lossless Ethernet network; the N_Port ID configured for the FC device and the The port ID of the FCoE device is the same as that of the VN2VN_Port ID.
  • a sending unit configured to receive the identifier information configured by the configuration unit, and multicast the Probe Request including the identifier information to the FCoE device in the lossless Ethernet network;
  • the receiving unit is further configured to: receive a Probe Reply sent by each FCoE device in the FCoE device;
  • a storage unit configured to: when the receiving unit receives a Probe Reply sent by each FCoE device in the FCoE device, and determine, according to the Probe Reply sent by each FCoE device, that the N_Port ID configured for the FC device does not match When the VN2VN_Port ID of any FCoE device in the lossless Ethernet network conflicts, the corresponding relationship between the FC device and the identifier information is saved;
  • the sending unit is further configured to send a FLOGI Accept message to the FC device, where the FLOGI Accept message carries the identifier information.
  • the configuration unit is specifically configured to:
  • N_Port Name carried in the FLOGI message as the WWPN of the FC device; configuring a MAC address for the FC device; and generating a temporary N_Port ID for the FC device;
  • the sending unit is specifically configured to:
  • the storage unit is specifically configured to:
  • the receiving unit receives a Probe Reply sent by each FCoE device in the FCoE device, and determines, according to the Probe Reply sent by each FCoE device, the temporary N_Port ID configured for the FC device does not
  • the temporary N_Port ID is used as the N_Port ID of the FC device, and the FC device and the WWPN, the MAC address, and the N_Port ID are saved. Correspondence relationship.
  • the receiving unit is further configured to:
  • the sending unit is further configured to:
  • the receiving unit When the receiving unit receives the NS GID_FT message, generate a Claim message including the identifier information according to the saved correspondence between the FC device and the identifier information, to the FCoE device group in the lossless Ethernet network. Broadcasting the Claim message;
  • the receiving unit is further configured to:
  • the sending unit is further configured to:
  • the receiving unit is further configured to:
  • the sending unit is further configured to:
  • the device further includes:
  • An update unit configured to: when a heartbeat message sent by the second FCoE device in the lossless Ethernet network is not received within a predetermined period, determine that the FC device and the second FCoE device have a heartbeat connection timeout, and update the FC And the identifier information of the neighboring node of the device, where the identifier information of the neighboring node of the FC device is updated, and the identifier information of the second FCoE device is deleted in the neighbor node identifier information of the FC device.
  • the sending unit is further configured to:
  • the receiving unit is further configured to: receive an NS GID_FT message sent by the FC device;
  • the sending unit is further configured to: send an NS GID_FT Accept message to the FC device, where the NS GID_FT Accept message carries the updated identifier information of the neighboring node of the FC device.
  • the receiving unit is further configured to:
  • the sending unit is further configured to: when the receiving unit receives the FC data packet sent by the FC device, determine the destination MAC address according to the destination N_Port ID and the source N_Port ID included in the FC data packet.
  • the source MAC address, the FC data packet is encapsulated into an FCoE data packet including the destination MAC address and the source destination MAC address, and the FCoE device corresponding to the destination MAC address is sent to send the FCoE Data message.
  • the gateway device including the VN2VN_Port and the F_Port is configured to enable the gateway device to access the lossless Ethernet network through the VN2VN_Port, and communicate with the FC device having the N_Port through the F_Port.
  • the identifier information is configured for the FC device, and the identifier information is negotiated with the FCoE device through the Probe Request message, and is determined according to the Probe Response message returned by the FCoE device in the Ethernet network.
  • the identifier information of the FC device is not in conflict with the identifier information of any FCoE device in the Ethernet network, the corresponding relationship between the FC device and the identifier information is saved, and the identifier information is sent to the FC device.
  • the method and the device provided by the embodiments of the present invention implement the interworking between the FCoE device with the VN_Port and the FC device with the N-Port through the gateway device at a low cost, and the networking is simple and easy to apply.
  • FIG. 1 is a schematic diagram of a VN2VN network in the prior art
  • FIG. 2 is a schematic flowchart of a network interworking method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a networking implementation according to an embodiment of the present invention.
  • FIG. 4 is a signaling diagram of a network interworking method according to an embodiment of the present invention.
  • FIG. 5 is a signaling diagram of a network interworking method according to an embodiment of the present invention.
  • FIG. 6 is a signaling diagram of a network interworking method according to an embodiment of the present invention.
  • FIG. 7 is a signaling diagram of a network interworking method according to an embodiment of the present invention.
  • FIG. 8 is a signaling diagram of a network interworking method according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an implementation manner of a packaged FCoE data packet according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a gateway device used for network interworking according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of a gateway device used for network interworking according to an embodiment of the present invention.
  • the method and device for network interworking provided by the embodiments of the present invention are simple in networking, and realize interworking between an FCoE device having a VN-Port and an FC device having an N-Port port at a low cost.
  • the identifier of the port of the FCoE device may be referred to as a VN2VN_Port ID or a VN_Port ID
  • the VN2VN_Port ID of the FCoE device is the same as the generation rule of the N_Port ID of the FC device, and the two have the same format and length.
  • FIG. 3 is a schematic diagram of a networking implementation according to an embodiment of the present invention.
  • the gateway device in order to enable the FCoE device with the VN_Port to communicate with the FC device having the N_Port, the gateway device (Gateway) is newly added in the networking implementation of the embodiment of the present invention. ).
  • the gateway device includes a VN_Port, and the Lostless Ethernet is accessed through the VN_Port.
  • the gateway device accesses the lossless Ethernet network through an Ethernet Fibre Channel link (FCoE link).
  • FCoE link Ethernet Fibre Channel link
  • FCoE devices with VN_Port also access the lossless Ethernet network via FCoE link.
  • the gateway device further includes an F_Port, and communicates with the FC device having the N_Port through the F_Port.
  • the gateway device is connected to the FC device with the N_Port through a Fibre Channel link (FC link).
  • the gateway device can complete control plane protocol packet conversion and data plane packet conversion between the FC device with the N_Port and the FCoE device with the VN_Port.
  • the VN2VN_Port in the figure refers to the N_Port in the VN2VN network, and the interface type is Ethernet.
  • the N_Port in the figure refers to the N_Port in the traditional FC network, and the interface type is the Fibre Channel interface type.
  • the method includes:
  • the gateway device receives the FLOGI message sent by the FC device, and configures the identifier information for the FC device according to the FLOGI; the identifier information includes a WWPN, an N_Port ID, and a MAC address, where the N_Port ID is used.
  • the FC device is identified when the FC device is in communication with another FC device or the FC device is in communication with an FCoE device in the lossless Ethernet network.
  • the FC device with the N_Port sends a FLOGI message to the gateway device when attempting to access the FCoE network.
  • the gateway device receives the FLOGI message, and configures identifier information for the FC device.
  • the identification information includes a WWPN, an N_Port ID, and a MAC address.
  • the gateway device configures the N_Port Name as the WWPN of the FC device according to the N_Port Name carried in the FLOGI message, that is, the N_Port Name of the FC device is the same as the WWPN.
  • the gateway device configures a MAC address for the FC device and generates a temporary N_Port ID.
  • the MAC address is a MAC address used by the control plane, and is used by the FC device to perform control plane protocol packet exchange with the FCoE device in the lossless Ethernet network.
  • the temporary N_Port ID is a temporary N_Port ID randomly generated by the gateway device for the FC device, and is used to negotiate the N_Port ID of the FC device with the FCoE device in the lossless Ethernet network. After the negotiation of the N_Port ID is successful, the N_Port ID is used as the unique identifier of the FC device in the FCoE network, and is used when the FC device communicates with the FCoE device or the FC device communicates with another FC device.
  • the N_Port ID configured for the FC device is the same as the generation rule of the port identifier VN2VN_Port ID of the FCoE device.
  • the gateway device multicasts, to the FCoE device in the lossless Ethernet network, a Probe Request that includes the identifier information.
  • the gateway device sends a Probe Request advertisement to the FCoE device in the lossless Ethernet network to notify the WWPN, the MAC address, and the temporary N_Port ID.
  • the gateway device when the gateway device receives a Probe Reply sent by each FCoE device in the FCoE device, and determines, according to the Probe Reply sent by each FCoE device, that the N_Port ID configured for the FC device is not the same as the When the VN2VN_Port ID of any FCoE device in the Ethernet network is in conflict, the gateway device saves the correspondence between the FC device and the identifier information.
  • the network device sends the Probe Request twice, and determines that the N_Port ID of the FC device does not conflict with the VN2VN_Port ID of any one of the FCoE devices in the lossless Ethernet network by using Probe Reply in the two Probe Request message periods. Then, it is determined that the N_Port ID is valid and used as the N_Port ID of the FC device. If the N_Port ID configured for the FC device is found and the VN2VN_Port ID of any FCoE device in the lossless Ethernet network is found When the terminal device randomly generates a new temporary N_Port ID, the conflict detection process is repeated until the N_Port ID configured for the FC device does not conflict with the VN2VN_Port ID of the existing device in the lossless Ethernet network. .
  • the gateway device sends a FLOGI Accept message to the FC device, where the FLOGI Accept message carries the identifier information.
  • the gateway device sends the identification information to the FC device by using a FLOGI Accept message.
  • the identifier information may include a WWPN, a MAC address, and an N_Port ID of the FC device, and may only include a WWPN and an N_Port ID.
  • a gateway device including a VN2VN_Port and an F_Port is configured, and a network registration message FLOGI sent by an FC device having an N_Port is received by the F_Port of the gateway device, and the FLOGI is the FC according to the FLOGI.
  • the device configures the identifier information, and negotiates the identifier information with the FCoE device through the Probe Request message, and determines that the identifier information configured for the FC device is not related to any FCoE device in the Ethernet network according to the Probe Response message returned by the FCoE device in the Ethernet network.
  • the identifier information conflicts, the corresponding relationship between the FC device and the identifier information is saved, and the identifier information is sent to the FC device.
  • the method and the device provided by the embodiments of the present invention implement the interworking between the FCoE device of the VN2VN_Port and the FC device with the N-port port by using the gateway device at a low cost, and the networking is simple and easy to apply.
  • FIG. 4 a signaling diagram of a network interworking method according to an embodiment of the present invention is shown.
  • FIG. 4 is a specific implementation signaling diagram for obtaining an N_Port ID.
  • the FC device with the N_Port sends a FLOGI message to the gateway device.
  • the gateway device After receiving the FLOGI message, the gateway device configures a WWPN, a MAC address, and a temporary N_Port ID for the FC device.
  • the gateway device sends a WWPN and a MAC address to the FCoE device in the lossless Ethernet network. And the Probe Request for the temporary N_Port ID.
  • the gateway device receives a Probe Reply (Probe Response) sent by the FCoE device in the lossless Ethernet network.
  • the gateway device When it is determined according to the Probe Reply that the temporary N_Port ID does not conflict with a VN_Port ID of any one of the FCoE devices in the network, the gateway device again sends a Probe Request to the FCoE device in the lossless Ethernet network.
  • the Probe Request contains a WWPN, a MAC address, and a temporary N_Port ID.
  • the gateway device accepts a Probe Reply sent by the FCoE device in the lossless Ethernet network. (Probe Response).
  • the gateway device When it is determined that the temporary N_Port ID does not conflict with the VN_Port ID of any one of the FCoE devices in the network, the gateway device records the correspondence between the FC device and the WWPN, the MAC address, and the N_Port ID, and records the N_Port information of the FC device. See Table 1 for an implementation of the N_Port information of the FC device.
  • the VN2VN_Port information table maintained for the gateway device can be used to record the identification information of the FC device, and can also be used to record the identification information of the neighboring node of the FC device, that is, the identification information of the FCoE device in the Ethernet network.
  • the gateway device sends a FLOGI Accept message to the FC device, where the FLOGI Accept message carries identifier information allocated for the FC device.
  • FIG. 5 a signaling diagram of a network interworking method according to an embodiment of the present invention is shown.
  • the network interworking method provided by the embodiment of the present invention may further include:
  • FC device sends a domain name server port registration (English: Name Server N_Port Login, abbreviated: NS PLOGI) message to the gateway device, where the NSPLOGI message is used for port registration.
  • NS PLOGI Domain Name Server N_Port Login
  • the gateway device sends a message of a domain name server port registration acceptance (English: Name Server N_Port Login Accept, NS PLOGI Accept) to the FC device.
  • a domain name server port registration acceptance English: Name Server N_Port Login Accept, NS PLOGI Accept
  • the FC device sends a domain name server domain name registration (English: Name Server Register, NS Register) message to the gateway device, where the NS Register message is used to register the attributes of the FC device with the gateway device.
  • a domain name server domain name registration English: Name Server Register, NS Register
  • the gateway device sends a domain name server domain name registration (English: Name Server Register Accept, NS Register Accept) to the FC device.
  • a domain name server domain name registration (English: Name Server Register Accept, NS Register Accept)
  • the FC device sends an NS GID_FT message to the gateway device, where the NS GID_FT message is used to request identifier information of a neighbor node of the FC device.
  • the gateway device receives the NS GID_FT message, and generates a Claim message including the identifier information according to the saved correspondence between the FC device and the identifier information, and multicasts to the FCoE device in the lossless Ethernet network. Send the Claim message.
  • the NS GID_FT message carries the N_Port ID of the FC device, and after receiving the NS GID_FT message, the gateway device searches for the identifier information corresponding to the FC device according to the N_Port ID, and constructs an inclusion according to the identifier information.
  • the Claim message of the identification information multicasts the Claim message to the FCoE device in the lossless Ethernet network.
  • the identification information may include: a WWPN, a MAC address, and the N_Port ID.
  • the source MAC address of the Claim message is a MAC address that is saved in the gateway device and corresponds to the N_Port ID of the FC device.
  • the destination MAC address of the Claim message is a standard defined Layer 2 multicast address.
  • the gateway device receives a Claim Response message sent by each FCoE device in the FCoE device in the lossless Ethernet network.
  • the gateway device obtains the identifier information of each FCoE device by parsing the Claim Response message sent by each FCoE device, and saves the identifier information of each FCoE device as the identifier of the neighboring node of the FC device. information.
  • the identification information of the neighbor node may include: a WWPN (VN2VN_Port Name), a VN2VN_Port ID, and a MAC address.
  • the gateway device saves the identifier information of each FCoE device as the identifier information of the neighboring node of the FC device for subsequent communication use. In a specific implementation, the gateway device may save the identifier information of the neighbor node of the FC device in Table 1.
  • the gateway device sends an NS GID_FT Accept message to the FC device, where the NS GID_FT Accept message carries identifier information of a neighbor node of the FC device.
  • the gateway device completes the neighbor discovery process of the FC device by using the saved identifier information of the FC device, so that the FC device obtains the identifier information of the FCoE device in the lossless Ethernet network.
  • FIG. 6 a signaling diagram of a network interworking method according to an embodiment of the present invention is shown.
  • the network interworking method provided by the embodiment of the present invention may further include:
  • the first FCoE device in the FCoE device in the lossless Ethernet network is in a lossless Ethernet network.
  • the device multicasts a Claim message that includes the identification information of the first FCoE device.
  • the newly added node When there is a new node in the lossless Ethernet network, the newly added node obtains the VN2VN_Port ID through negotiation, and then sends a Layer message to other devices in the network for neighbor discovery.
  • the gateway device receives the Claim message, and sends a Claim Response message to the first FCoE device, where the Claim Response message carries the identifier information of the FC device.
  • the gateway device when a plurality of FC devices access the lossless Ethernet network, the gateway device sends a Claim Response message including the identifier information of each FC device to the first FCoE device, respectively, to The first FCoE device notifies the identification information of each FC device.
  • the gateway device parses the Claim message, obtains the identifier information of the first FCoE device, and saves the identifier information of the first FCoE device.
  • the gateway device sends an RSCN message to the FC device, where the message is used to indicate that the identifier information of the neighboring node of the FC device is updated.
  • the FC device sends an RSCN Accept message to the gateway device.
  • the FC device sends an NS GID_FT message to the gateway device, where the identifier information of the neighbor node is requested.
  • the gateway device sends an NS GID_FT Accept message to the FC device, where the NS GID_FT Accept message carries the latest identifier information of the neighboring node of the FC device.
  • the gateway device implements the process of discovering the FC device by the FCoE device, so that the FC device obtains the identifier information of the newly added FCoE device in the lossless Ethernet network, which is beneficial to the FC device and the added FCoE device communication.
  • FIG. 7 a signaling diagram of a network interworking method according to an embodiment of the present invention is shown.
  • the network interworking method provided by the embodiment of the present invention may further include:
  • the gateway device determines that the FC device and the second FCoE device have a heartbeat connection timeout. And updating the identifier information of the neighbor node of the FC device.
  • updating the identifier information of the neighboring node of the FC device includes deleting the identifier information of the second FCoE device in the neighbor node identifier information of the FC device.
  • the gateway device sends an RSCN message to the FC device, where the message is used to indicate that the identifier information of the neighboring node of the FC device is updated.
  • the FC device sends an RSCN Accept message to the gateway device.
  • the FC device sends an NS GID_FT message to the gateway device, where the identifier information of the neighbor node is requested.
  • the gateway device sends an NS GID_FT Accept message to the FC device, where the NS GID_FT Accept message carries the latest identifier information of the neighboring node of the FC device.
  • the gateway device implements the process of notifying the status change of the FCoE device and the FC device by using the saved information of the FC device, so that the FC device updates the identifier information of the FCoE device of the neighboring node. Conducive to FC equipment and FCoE equipment communication.
  • the gateway device may also perform packet forwarding processing.
  • the message types are divided into two types, data plane messages and control plane messages.
  • the control plane message includes: (1) the Ethernet type is the Ethernet Fibre Channel Initialization Protocol (English: FCoE Initialization Protocol, abbreviated: FIP) type Ethernet message; (2) In the FC message type, the FC destination address is the standard. A message with a defined special address.
  • the data plane message includes: (1) an Ethernet message of the FCoE type; and (2) an FC message whose data address is defined by the standard.
  • FIG. 8 a schematic flowchart of a network interworking method according to an embodiment of the present invention is shown. After the process shown in FIG. 2, FIG. 4, FIG. 5, FIG. 6, or FIG. 7, the network interworking method provided by the embodiment of the present invention may further include:
  • the FC device sends an FC data packet to the FCoE device.
  • the gateway device encapsulates the FC data packet into an FCoE data packet.
  • the gateway device When the gateway device receives the FC data packet sent by the FC device, determining the destination MAC address and the source MAC address according to the destination N_Port ID and the source N_Port ID included in the FC data packet.
  • the source MAC address is obtained according to the source N_Port ID in the FC data packet.
  • the destination MAC address is obtained according to the destination N_Port ID in the FC data packet.
  • the source MAC address of the FCoE data packet may be in the form of “VN2VN-FC-MAP
  • the destination MAC address of the FCoE data packet may be "VN2VN-FC-MAP
  • the MAC address can be 0EFD00010101, where 0EFD00 is a fixed bit and 010101 is an N_Port ID.
  • the MAC address is obtained by using the FC ID mapping on the data plane, and the table operation can be omitted, thereby ensuring high performance of forwarding.
  • the gateway device obtains a MAC address by looking up identification information.
  • the gateway device determines the source MAC address corresponding to the source N_Port ID according to the destination N_Port ID and the source N_Port ID included in the FC data packet, and the corresponding relationship between the saved FC device and the identifier information. And determining an destination MAC address corresponding to the destination N_Port ID according to the identifier information of the neighbor node of the saved FC device.
  • FCoE data packet can be constructed by encapsulating the source MAC address (S_MAC) and the destination MAC address (D_MAC) for the FC data packet.
  • S_MAC source MAC address
  • D_MAC destination MAC address
  • the gateway device sends the FCoE data packet to an FCoE device corresponding to the destination MAC address.
  • the method further includes: when receiving the FCoE data packet sent by the FCoE device of the lossless Ethernet network, the gateway device decapsulates the FCoE data packet, and converts the FCoE data packet into an FC Data packet, sending the FC data packet to the FC device.
  • the gateway device deletes the MAC address information in the message header of the FCoE data packet to obtain an FC data packet, and according to the destination N_Port ID information in the message header of the FC data packet, The FC device corresponding to the destination N_Port ID sends the decapsulated FC data packet.
  • the gateway device can forward the packet between the FCoE device and the FC device, and implement data communication between the FCoE device and the FC device.
  • the method provided by the embodiment of the invention not only has a simple networking, but also can be compatible with the FC device of the prior art, and realize mutual communication between the FC device and the FCoE device.
  • FIG. 10 is a schematic diagram of a gateway device 1000 for network interworking according to an embodiment of the present invention.
  • the gateway device 1000 may be as shown in FIG. 2, FIG. 4, FIG. 5, FIG. 6, FIG. 7, or FIG.
  • the gateway device shown is used to implement the network interworking method illustrated above.
  • the gateway device 1000 includes a VN2VN_Port and an F_Port, and the gateway device 1000 accesses the lossless Ethernet network through the VN2VN_Port port, and communicates with the FC device having the N_Port through the F_Port port, where the gateway device 1000 further includes a receiving unit 1001. , a configuration unit 1002, a sending unit 1003, and a storage unit 1004, wherein:
  • the receiving unit 1001 is configured to receive a FLOGI message sent by the FC device.
  • the configuration unit 1002 is configured to: after the receiving unit 1001 receives the FLOGI message, configure identifier information for the FC device according to the FLOGI; the identifier information includes a WWPN, an N_Port ID, and a MAC address.
  • the N_Port ID is used to identify the FC device when the FC device communicates with another FC device or the FC device communicates with an FCoE device in the lossless Ethernet network.
  • the N_Port ID configured for the FC device is the same as the generation rule of the port identifier VN2VN_Port ID of the FCoE device.
  • the sending unit 1003 is configured to receive the identifier information configured by the configuration unit 1002, and multicast the Probe Request including the identifier information to the FCoE device in the lossless Ethernet network.
  • the receiving unit 1001 is further configured to receive a Probe Reply sent by each FCoE device in the FCoE device;
  • the storage unit 1004 is configured to: when the receiving unit 1001 receives a Probe Reply sent by each FCoE device in the FCoE device, and determine a N_Port configured for the FC device according to the Probe Reply sent by each FCoE device. When the ID does not conflict with the VN2VN_Port ID of any FCoE device in the lossless Ethernet network, the corresponding relationship between the FC device and the identifier information is saved;
  • the sending unit 1003 is further configured to send a FLOGI Accept message to the FC device, where the FLOGI Accept message carries the identifier information.
  • the configuration unit 1002 is specifically configured to:
  • N_Port Name carried in the FLOGI message as the WWPN of the FC device; configuring a MAC address for the FC device; and generating a temporary N_Port ID for the FC device;
  • the sending unit 1003 is specifically configured to:
  • the storage unit 1004 is specifically configured to:
  • the receiving unit 1001 Receiving, by the receiving unit 1001, a Probe Reply sent by each FCoE device in the FCoE device, and determining, according to the Probe Reply sent by each FCoE device, that the temporary N_Port ID configured for the FC device is not related to the lossless
  • the temporary N_Port ID is used as the N_Port ID of the FC device, and the correspondence between the FC device and the WWPN, the MAC address, and the N_Port ID is saved. relationship.
  • the receiving unit 1001 is further configured to:
  • the sending unit 1003 is further configured to:
  • the receiving unit 1001 When the receiving unit 1001 receives the NS GID_FT message, according to the saved FC device and the Corresponding relationship of the identifier information generates a Claim message including the identifier information, and multicasts the Claim message to the FCoE device in the lossless Ethernet network;
  • the receiving unit 1001 is further configured to:
  • the sending unit 1003 is further configured to:
  • the receiving unit 1001 is further configured to:
  • the sending unit 1003 is further configured to:
  • the device 1000 further includes:
  • An update unit configured to: when a heartbeat message sent by the second FCoE device in the lossless Ethernet network is not received within a predetermined period, determine that the FC device and the second FCoE device have a heartbeat connection timeout, and update the FC And the identifier information of the neighboring node of the device, where the identifier information of the neighboring node of the FC device is updated, and the identifier information of the second FCoE device is deleted in the neighbor node identifier information of the FC device.
  • the sending unit 1003 is further configured to: send an RSCN message to the FC device, where the RSCN message is used to indicate that the identifier information of the neighboring node of the FC device is updated;
  • the receiving unit 1001 is further configured to: receive an NS GID_FT message sent by the FC device;
  • the sending unit 1003 is further configured to: send an NS GID_FT Accept message to the FC device, where the NS GID_FT Accept message carries the updated identifier information of the neighbor node of the FC device.
  • the receiving unit 1001 is further configured to:
  • the sending unit 1003 is further configured to: when the receiving unit 1001 receives the FC data packet sent by the FC device, determine the destination MAC according to the destination N_Port ID and the source N_Port ID included in the FC data packet. And the source MAC address, the FC data packet is encapsulated into an FCoE data packet including the destination MAC address and the source destination MAC address, and the FCoE data is sent to the FCoE device corresponding to the destination MAC address. Message.
  • FIG. 11 is a gateway device 1100 for network interworking according to an embodiment of the present invention.
  • the gateway device 1100 can be the gateway device shown in FIG. 2, FIG. 4, FIG. 5, FIG. 6, FIG. 7, or FIG.
  • the gateway device 1100 may include a processor 1101, a network interface 1102, a memory 1103, and a communication bus 1104 for implementing connection communication between the processor 1101, the network interface 1102, and the memory 1103.
  • the processor 1101 may be a CPU
  • the memory 1103 may include a high speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.
  • RAM high speed random access memory
  • the memory 1103 is configured to store a set of program instructions, and the processor 1101 is configured to invoke a program instruction stored by the memory 1103 to perform a corresponding operation.
  • the network interface 1102 includes a VN2VN_Port and an F_Port, and the gateway device 1100 accesses the lossless Ethernet network through the VN2VN_Port, and communicates with the FC device having the N_Port through the F_Port.
  • the processor 1101 calls a program instruction in the memory 1103 for:
  • the identifier information includes a global unique port name WWPN, an N port identifier N_Port ID, and a medium access control MAC address, where The N_Port ID is configured to identify the FC device when the FC device communicates with another FC device or the FC device communicates with an FCoE device in the lossless Ethernet network;
  • the N_Port ID is the same as the generation rule of the port identifier VN2VN_Port ID of the FCoE device.
  • the processor 1101 instructs the program instruction in the memory 1103 to be configured to: configure an N port name N_Port Name carried in the FLOGI message as a WWPN of the FC device; configure a MAC for the FC device. Address; generate a temporary N_Port ID for the FC device;
  • the multicast request to the FCoE device in the lossless Ethernet network to send the probe request including the identifier information includes: transmitting, by the FCoE device in the lossless Ethernet network, the WWPN, the MAC address Address and Probe Request of the temporary N_Port ID;
  • the processor 1101 invokes the program instructions in the memory 1103 to further:
  • the FC device Receiving, by the FC device, the domain name server port identifier information requesting an NS GID_FT message, where the NS GID_FT message is used to request identifier information of the neighboring node of the FC device;
  • the identification information of each FCoE device is used as the identifier information of the neighboring node of the FC device;
  • the processor 1101 invokes the program instructions in the memory 1103 to further:
  • the processor 1101 invokes the program instructions in the memory 1103 to further:
  • the identifier information of the neighbor node that updates the FC device includes:
  • the processor 1101 invokes the program instructions in the memory 1103 to further:
  • NS GID_FT Accept message Sending an NS GID_FT Accept message to the FC device, where the NS GID_FT Accept message carries the updated identifier information of the neighboring node of the FC device.
  • the processor 1101 invokes the program instructions in the memory 1103 to further:
  • the FC data packet is encapsulated into an FCoE data packet that includes the destination MAC address and the source destination MAC address, and the FCoE data packet is sent to the FCoE device corresponding to the destination MAC address.
  • the gateway device provided by the embodiment of the present invention accesses the lossless Ethernet network through the VN2VN_Port, and connects to the FC device with the N_Port through the F_Port, and after receiving the FLOGI message sent by the FC device, configures the FC device. Identifying the information, and negotiating the identification information with the FCoE device through the Probe Request message, and determining, according to the Probe Response message returned by the FCoE device in the Ethernet network, that the identifier information configured for the FC device does not identify with any FCoE device in the Ethernet network. When the conflict occurs, the correspondence between the FC device and the identifier information is saved, and the identifier information is sent to the FC device.
  • the gateway device provided by the embodiment of the present invention implements interworking between the FCoE device with the VN_Port and the FC device with the N-Port at a low cost, and the networking is simple and easy to apply.
  • inventive arrangements may be described in the general context of computer-executable instructions executed by a computer, such as a program element.
  • program units include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types.
  • inventive arrangements can also be practiced in distributed computing environments where tasks are performed by remote processing devices that are connected through a communication network.
  • Distributed computing ring The program unit can be located in both local and remote computer storage media including storage devices.
  • the various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
  • the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

Abstract

一种网络互通方法，应用于网关设备，所述网关设备包括VN2VN_Port和F_Port，所述网关设备通过VN2VN_Port接入无损以太网络，并通过F_Port与具有N_Port的FC设备相连，所述网关设备接收FC设备发送的FLOGI消息，根据FLOGI为所述FC设备配置标识信息；所述标识信息包括WWPN、N_Port ID以及MAC地址；向无损以太网络中的FCoE设备组播发送包含所述标识信息的Probe Request；当接收到FCoE设备中的每个FCoE设备发送的Probe Reply，且根据每个FCoE设备发送的Probe Reply确定为所述FC设备配置的标识信息不与无损以太网络中的任何FCoE设备的标识信息冲突时，保存所述FC设备与所述标识信息的对应关系；向FC设备发送FLOGI Accept消息，所述FLOGIAccept消息中携带所述标识信息。本发明以较低的成本实现了具有VN-Port的FCoE设备与具有N-Port端口的FC设备的互通。

Description

一种网络互通的方法及设备
本申请要求于2014年7月29日提交中国专利局、申请号为201410366765.7、发明名称为“一种网络互通的方法及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明实施例涉及通信技术领域，具体涉及一种网络互通的方法及设备。
背景技术
光纤通道存储网络(英文：Fibre Channel Storage Area Network，缩写：FC-SAN)一般由N端口(英文：N_Port)设备和光纤通道网络(英文：FC Fabric)组成，其中N-Port设备可以是配置有主机总线适配器(英文：Host Bus Adapter，缩写：HBA)的FC设备，所述FC设备可以为主机或者存储设备。N-Port设备在初始化时需要向FC Fabric注册，由FC Fabric为所述N-Port设备分配N端口标识(英文：N_Port_ID)，用于在后续通信过程中标识所述N-Port设备。
虚拟N端口-虚拟N端口(英文：Virtual N_Port to Virtual N_Port，缩写：VN2VN_Port)网络是以太网光纤通道(英文：Fibre Channel over Ethernet，缩写：FCoE)网络的一种新型的组网形态。如图1所示，为现有技术中的VN2VN网络示意图。在VN2VN组网中，FCoE设备的端口是一种特殊的N_Port，称之为VN2VN_Port，也可以简称为VN_Port。多个支持VN-Port的FCoE设备(英文：FCoE node，缩写：ENode)，例如ENode 1，ENode 2，Enode 3通过无损以太网络(英文：Lossless Ethernet Network)进行互联，而无需FCoE交换机的支持。此外，在VN2VN组网中，各ENode之间直接交互协商VN_Port_ID等网络参数，无需FCoE转发设备(英文：FCoE forwarder，缩写：FCF)的参与。因此，VN2VN组网具有组网简单、成本低、维护简单的缺点。
然而，上述现有技术的VN2VN网络不能接入FC设备，因此不能够实现具有VN-Port的FCoE设备与具有N-Port的FC设备的互通。
发明内容
本发明要解决的问题是提供一种网络互通的方法及设备，能够以较低的成本实现了具有VN-Port的FCoE设备与具有N-Port的FC设备的互通。
为此，本发明提供如下技术方案：
第一方面，本发明实施例提供了一种网络互通方法，所述方法应用于网关设备，所述网关设备包括虚拟N端口-虚拟N端口网络接入端口(VN2VN_Port)和光纤通道网络接入端口(F_Port)，所述网关设备通过所述VN2VN_Port接入无损以太网络，并通过所述F_Port与具有N端口N_Port的光纤通道FC设备通信，所述方法包括：
接收所述FC设备发送的网络注册(英文：Fabric Login，缩写：FLOGI)消息，根据所述FLOGI为所述FC设备配置标识信息；所述标识信息包括全球唯一端口名称(英文：World Wide Port Name，缩写：WWPN)、N端口标识(N_Port ID)以及介质访问控制(MAC)地址，其中，所述N_Port ID用于在所述FC设备与另一FC设备通信或者所述FC设备与所述无损以太网络中的FCoE设备通信时标识所述FC设备；为所述FC设备配置的所述N_Port ID与所述FCoE设备的端口标识VN2VN_Port ID的生成规则相同；
向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的探测请求(Probe Request)；
当接收到所述FCoE设备中的每个FCoE设备发送的探测响应(Probe Reply)，且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所述标识信息的对应关系；
向所述FC设备发送网络注册接受(英文：Fabric Login Accept，缩写：FLOGI Accept)消息，所述FLOGI Accept消息中携带所述标识信息。
结合第一方面，在第一方面的第一种可能的实现方式中，所述根据所述FLOGI消息为所述FC设备配置标识信息包括：
将所述FLOGI消息中携带的N端口名称(N_Port Name)配置为所述FC设备的WWPN；
为所述FC设备配置MAC地址；
为所述FC设备生成临时N_Port ID；
其中，所述向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的探测请求Probe Request包括：
向所述无损以太网络中的FCoE设备组播发送包含所述WWPN、所述MAC地址以及所述临时N_Port ID的Probe Request；
所述当接收到所述FCoE设备中的每个FCoE设备发送的探测响应Probe Reply，且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所 述标识信息的对应关系包括：
当接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的所述临时N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，将所述临时N_Port ID作为所述FC设备的N_Port ID，并保存所述FC设备与所述WWPN、MAC地址以及所述N_Port ID的对应关系。
结合第一方面或者第一方面的第一种可能的实现方式，在第二种可能的实现方式中，所述方法还包括：
接收所述FC设备发送的域名服务器端口标识信息请求(英文：Name Server Get N_Port_ID with Feathre Type，缩写：NS GID_FT)消息，所述NS GID_FT消息用于请求所述FC设备的邻居节点的标识信息；
根据保存的所述FC设备与所述标识信息的对应关系生成包含所述标识信息的邻居发现(Claim)消息，向所述无损以太网络中的FCoE设备组播发送所述Claim消息；
接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的邻居发现响应(Claim Response)消息，解析所述每个FCoE设备发送的Claim Response消息获得所述每个FCoE设备的标识信息，保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息；
向所述FC设备发送域名服务器端口标识信息响应(英文：Name Server Get N_Port_ID with Feathre Type Accept，缩写：NS GID_FT Accept)消息，所述NS GID_FT Accept消息携带所述FC设备的邻居节点的标识信息。
结合第一方面、第一方面的第一种可能的实现方式或者第一方面的第二种可能的实现方式，在第三种可能的实现方式中，所述方法还包括：
接收所述无损以太网络中的FCoE设备中的第一FCoE设备发送的Claim消息，解析所述Claim消息获得所述第一FCoE设备的标识信息，保存所述第一FCoE设备的标识信息；
向所述第一FCoE设备发送Claim Response消息，所述Claim Response消息携带所述FC设备的标识信息。
结合第一方面第二种可能的实现方式或者第一方面的第三种可能的实现方式，在第四种可能的实现方式中，所述方法还包括：
当在预定周期内未收到所述无损以太网络中的第二FCoE设备发送的心跳消息时， 确定所述FC设备与所述第二FCoE设备心跳连接超时，更新所述FC设备的邻居节点的标识信息；
其中，所述更新所述FC设备的邻居节点的标识信息包括：
在所述FC设备的邻居节点标识信息中删除与所述第二FCoE设备的标识信息。
结合第一方面的第四种可能的实现方式，在第五种可能的实现方式中，所述方法还包括：
向所述FC设备发送注册状态变化通知(英文：Registered State Change Notification，缩写：RSCN)消息，所述RSCN消息用于指示所述FC设备的邻居节点的标识信息发生更新；
接收所述FC设备发送的NS GID_FT消息；
向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带更新后的所述FC设备的邻居节点的标识信息。
结合前述的第一方面或第一方面的前述任意一种可能的实现方式，在第一方面的第六种可能的实现方式中，所述方法还包括：
当接收到所述FC设备发送的FC数据报文时，根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，确定目的MAC地址和源MAC地址；
将所述FC数据报文封装成包含所述目的MAC地址和所述源目的MAC地址的FCoE数据报文，向与所述目的MAC地址对应的FCoE设备发送所述FCoE数据报文。
根据本发明实施例的第二方面，提供了一种用于网络互通的网关设备，所述网关设备包括VN2VN_Port和F_Port，所述网关设备通过所述VN2VN_Port端口接入无损以太网络，并通过所述F_Port端口与具有N_Port的FC设备通信，所述网关设备还包括：
接收单元，用于接收所述FC设备发送的FLOGI消息；
配置单元，用于在所述接收单元接收到所述FLOGI消息后，根据所述FLOGI为所述FC设备配置标识信息；所述标识信息包括WWPN、N_Port ID以及MAC地址，其中，所述N_Port ID用于在所述FC设备与另一FC设备通信或者所述FC设备与所述无损以太网络中的FCoE设备通信时标识所述FC设备；为所述FC设备配置的所述N_Port ID与所述FCoE设备的端口标识VN2VN_Port ID的生成规则相同；
发送单元，用于接收所述配置单元配置的标识信息，向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的Probe Request；
所述接收单元还用于：接收所述FCoE设备中的每个FCoE设备发送的Probe Reply；
存储单元，用于当所述接收单元接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所述标识信息的对应关系；
其中，所述发送单元还用于向所述FC设备发送FLOGI Accept消息，所述FLOGI Accept消息携带所述标识信息。
结合第二方面，在第二方面的第一种可能的实现方式中，所述配置单元具体用于:
将所述FLOGI消息中携带的N_Port Name配置为所述FC设备的WWPN；为所述FC设备配置MAC地址；为所述FC设备生成临时N_Port ID；
其中，所述发送单元具体用于：
向所述无损以太网络中的FCoE设备组播发送包含所述WWPN、所述MAC地址以及所述临时N_Port ID的Probe Request；
所述存储单元具体用于：
当所述接收单元接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的所述临时N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，将所述临时N_Port ID作为所述FC设备的N_Port ID，并保存所述FC设备与所述WWPN、所述MAC地址以及所述N_Port ID的对应关系。
结合第二方面或者第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述接收单元还用于：
接收所述FC设备发送的NS GID_FT消息，所述NS GID_FT消息用于请求所述FC设备的邻居节点的标识信息；
所述发送单元还用于：
当所述接收单元接收到所述NS GID_FT消息时，根据保存的所述FC设备与所述标识信息的对应关系生成包含所述标识信息的Claim消息，向所述无损以太网络中的FCoE设备组播发送所述Claim消息；
所述接收单元还用于：
接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的Claim Response消息，解析所述每个FCoE设备发送的Claim Response消息获得所述每个FCoE设备的标识信息，保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息；
所述发送单元还用于：
接收所述接收单元获得的所述FC设备的邻居节点的标识信息，向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息中携带所述FC设备的邻居节点的标识信息。
结合前述的第二方面或第二方面的前述任意一种可能的实现方式，在第二方面的第三种可能的实现方式中，所述接收单元还用于：
接收所述无损以太网络中的FCoE设备中的第一FCoE设备发送的Claim消息，解析所述Claim消息获得所述第一FCoE设备的标识信息，保存所述第一FCoE设备的标识信息；
所述发送单元还用于：
向所述第一FCoE设备发送Claim Response消息，所述Claim Response消息携带对应所述FC设备的标识信息。
结合第二方面的第二种可能的实现方式或第三种可能的实现方式，在第二方面的第四种可能的实现方式中，所述设备还包括：
更新单元，用于当在预定周期内未收到所述无损以太网络中的第二FCoE设备发送的心跳消息时，确定所述FC设备与所述第二FCoE设备心跳连接超时，更新所述FC设备的邻居节点的标识信息；其中，更新所述FC设备的邻居节点的标识信息包括：在所述FC设备的邻居节点标识信息中删除与所述第二FCoE设备的标识信息。
结合第二方面的第四种可能的实现方式，在第二方面的第五种可能的实现方式中，所述发送单元还用于：
向所述FC设备发送RSCN消息，所述RSCN消息用于指示所述FC设备的邻居节点的标识信息发生更新；
所述接收单元还用于：接收所述FC设备发送的NS GID_FT消息；
所述发送单元还用于：向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带更新后的所述FC设备的邻居节点的标识信息。
结合前述的第二方面或第二方面的前述任意一种可能的实现方式，在第二方面的第六种可能的实现方式中，所述接收单元还用于：
接收所述FC设备发送的FC数据报文；
所述发送单元还用于：当所述接收单元接收到所述FC设备发送的FC数据报文时，根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，确定目的MAC地址和 源MAC地址，将所述FC数据报文封装成包含所述目的MAC地址和所述源目的MAC地址的FCoE数据报文，向与所述目的MAC地址对应的FCoE设备发送所述发送所述FCoE数据报文。
本发明实施例提供的网络互通方法及设备，设置包括VN2VN_Port和F_Port的网关设备，使得所述网关设备通过所述VN2VN_Port接入无损以太网络，并通过所述F_Port与具有N_Port的FC设备通信，在接收到所述FC设备发送的FLOGI消息后，为所述FC设备配置标识信息，并通过Probe Request消息与FCoE设备协商标识信息，在根据以太网络中的FCoE设备返回的Probe Response消息确定为所述FC设备配置的标识信息不与以太网络中的任何FCoE设备的标识信息冲突时，保存所述FC设备与所述标识信息的对应关系，并将所述标识信息发送给FC设备。本发明实施例提供的方法和设备，通过网关设备以较低的成本实现了具有VN_Port的FCoE设备与具有N-Port的FC设备的互通，组网简单，易于应用。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。
图1为现有技术中的VN2VN网络示意图；
图2为本发明实施例提供的一种网络互通方法的流程示意图；
图3为本发明实施例提供的一种组网实现示意图；
图4为本发明实施例提供的一种网络互通方法的信令图；
图5为本发明实施例提供的一种网络互通方法的信令图；
图6为本发明实施例提供的一种网络互通方法的信令图；
图7为本发明实施例提供的一种网络互通方法的信令图；
图8为本发明实施例提供的一种网络互通方法的信令图；
图9为本发明实施例提供的封装后的FCoE数据报文一种实现方式示意图；
图10为本发明实施例提供的一种用于网络互通的网关设备示意图；
图11为本发明实施例提供的一种用于网络互通的网关设备示意图。
具体实施方式
本发明实施例提供的网络互通的方法及设备，组网简单，并以较低的成本实现了具有VN-Port的FCoE设备与具有N-Port端口的FC设备的互通。
为了使本技术领域的人员更好地理解本发明中的技术方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
在本发明实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本发明。在本发明实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
需要说明的是，所述FCoE设备的端口的标识可以称之为VN2VN_Port ID或者VN_Port ID，所述FCoE设备的VN2VN_Port ID与所述FC设备的N_Port ID的生成规则相同，二者具有相同的格式和长度。
参见图2，示出了本发明实施例提供的一种网络互通方法的流程示意图，应用于网关设备。参见图3，为本发明实施例一种组网实现示意图。如图3所示，与现有技术中的VN2VN网络相比，为了使得具有VN_Port的FCoE设备与具有N_Port的FC设备通信，在本发明实施例的组网实现中，新增加了网关设备(Gateway)。所述网关设备包括VN_Port，通过所述VN_Port接入无损以太网络(Lossless Ethernet)。具体实现时，网关设备通过以太网光纤通道链路(FCoE link)接入无损以太网络。具有VN_Port的FCoE设备也通过FCoE link接入无损以太网络。所述网关设备还包括F_Port，并通过所述F_Port与具有N_Port的FC设备通信。所述网关设备与所述具有N_Port的FC设备通过光纤通道链路(FC link)相连。所述网关设备可以完成具有N_Port的FC设备和具有VN_Port的FCoE设备之间的控制面协议报文转换和数据面报文转换。其中，图中的VN2VN_Port指VN2VN网络中的N_Port，接口类型为以太类型；图中的N_Port是指传统FC网络中的N_Port，接口类型为光纤通道接口类型。所述方法包括：
S201，所述网关设备接收所述FC设备发送的FLOGI消息，根据所述FLOGI为所述FC设备配置标识信息；所述标识信息包括WWPN、N_Port ID以及MAC地址，其中，所述N_Port ID用于在所述FC设备与另一FC设备通信或者所述FC设备与所述无损以太网络中的FCoE设备通信时标识所述FC设备。
具有N_Port的FC设备在尝试接入FCoE网络时，向所述网关设备发送FLOGI消息。所述网关设备接收到所述FLOGI消息，为所述FC设备配置标识信息。所述标识信息包括WWPN、N_Port ID以及MAC地址。具体实现时，所述网关设备根据所述FLOGI消息中携带的N_Port Name，将所述N_Port Name配置为所述FC设备的WWPN，亦即FC设备的N_Port Name与WWPN相同。网关设备为所述FC设备配置MAC地址，并生成临时N_Port ID。其中，所述MAC地址为控制面使用的MAC地址，用于FC设备与所述无损以太网络中的FCoE设备进行控制面协议报文的交互。所述临时N_Port ID为网关设备为所述FC设备随机生成的临时N_Port ID，用于与所述无损以太网络中的FCoE设备协商所述FC设备的N_Port ID。当N_Port ID协商成功后，所述N_Port ID将作为所述FC设备在FCoE网络中的唯一标识，用于所述FC设备与所述FCoE设备通信或者所述FC设备与另一FC设备通信时标识所述FC设备。为所述FC设备配置的所述N_Port ID与所述FCoE设备的端口标识VN2VN_Port ID的生成规则相同。
S202，所述网关设备向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的Probe Request。
所述网关设备向所述无损以太网络中的所有FCoE设备组播发送Probe Request通告所述WWPN、所述MAC地址以及所述临时N_Port ID。
S203，当所述网关设备接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply，且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，所述网关设备保存所述FC设备与所述标识信息的对应关系。
所述网关设备接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的Probe Reply，并根据所述Probe Reply确定为所述FC设备配置的所述临时N_Port ID是否与无损以太网络中的任何一个FCoE设备的标识信息中的N_Port ID冲突。如果该临时N_Port ID不与无损以太网络中的任何一个FCoE设备的WVN2VN_Port ID冲突，则将所述临时N_Port ID作为所述FC设备的N_Port ID使用，并保存所述FC设备与所述WWPN、MAC地址以及所述N_Port ID的对应关系。优选的，所述网络设备将发送两次Probe Request，当在两个Probe Request消息周期内通过Probe Reply确定所述FC设备的N_Port ID不与无损以太网络中的任何一个FCoE设备的VN2VN_Port ID冲突，则确定所述N_Port ID有效，将其作为所述FC设备的N_Port ID使用。如果发现为所述FC设备配置的N_Port ID与无损以太网络中的任何一个FCoE设备的VN2VN_Port ID冲 突时，则所述网关设备随机生成新的临时N_Port ID，重复上述冲突探测流程，直到为所述FC设备配置的N_Port ID不与所述无损以太网络中的已有的设备的VN2VN_Port ID冲突为止。
S204，所述网关设备向所述FC设备发送FLOGI Accept消息，所述FLOGI Accept消息中携带所述标识信息。
在确认为所述FC设备配置的N_Port ID与无损以太网络中的任何一个FCoE设备的VN2VN_Port ID不冲突时，所述网关设备将通过FLOGI Accept消息，向所述FC设备发送所述标识信息。所述标识信息可以包括所述FC设备的WWPN、MAC地址以及N_Port ID，也可以只包含WWPN以及N_Port ID。
在本发明实施例提供的网络互通方法中，配置包括VN2VN_Port和F_Port的网关设备，通过所述网关设备的F_Port接收具有N_Port的FC设备发送的网络注册消息FLOGI，并根据所述FLOGI为所述FC设备配置标识信息，并通过Probe Request消息与FCoE设备协商标识信息，在根据以太网络中的FCoE设备返回的Probe Response消息确定为所述FC设备配置的标识信息不与以太网络中的任何FCoE设备的标识信息冲突时，保存所述FC设备与所述标识信息的对应关系，并将所述标识信息发送给FC设备。本发明实施例提供的方法和设备，通过网关设备以较低的成本实现了VN2VN_Port的FCoE设备与具有N-Port端口的FC设备的互通，组网简单，易于应用。
参见图4，示出了本发明实施例提供的一种网络互通方法的信令图。图4为获取N_Port ID的具体实现信令图。
S401，具有N_Port的FC设备向网关设备发送FLOGI消息。
S402，所述网关设备接收到所述FLOGI消息后，为所述FC设备配置WWPN、MAC地址以及生成临时N_Port ID；所述网关设备向无损以太网络中的FCoE设备组播发送包含WWPN、MAC地址以及临时N_Port ID的Probe Request。
S403，所述网关设备接收所述无损以太网络中的FCoE设备发送的Probe Reply(Probe Response)。
S404，当根据所述Probe Reply确定所述临时N_Port ID不与网络中任何一个FCoE设备的VN_Port ID冲突时，所述网关设备再次向无损以太网络中的FCoE设备组播发送Probe Request。所述Probe Request包含WWPN、MAC地址以及临时N_Port ID。
S405，所述网关设备接受所述无损以太网络中的FCoE设备发送的Probe Reply (Probe Response)。
S406，当根据所述Probe Reply确定所述临时N_Port ID不与网络中任何一个FCoE设备的VN_Port ID冲突时，所述网关设备记录FC设备与WWPN、MAC地址以及N_Port ID的对应关系，记录所述FC设备的N_Port信息。参见表1，为记录FC设备的N_Port信息的一种实现形式。
如表1所示，为网关设备维护的VN2VN_Port信息表，可以用来记录FC设备的标识信息，还可以用于记录FC设备的邻居节点的标识信息，即以太网络中的FCoE设备的标识信息。
表1 VN2VN_Port信息表
VN2VN_Port Name N_Port ID VN2VN_Port MAC
20:00:00:25:09:11:22:33 0.2.3 00:25:09:01:23:45
…… …… ……
S407，所述网关设备向所述FC设备发送FLOGI Accept消息，所述FLOGI Accept消息中携带为所述FC设备分配的标识信息。
参见图5，示出了本发明实施例提供的一种网络互通方法的信令图。
在图2或图4所示流程之后，本发明实施例提供的网络互通方法还可以进一步包括：
S501，所述FC设备向所述网关设备发送域名服务器端口注册(英文：Name Server N_Port Login，缩写：NS PLOGI)消息，所述NS PLOGI消息用于进行端口注册。
S502，所述网关设备向所述FC设备发送域名服务器端口注册接受(英文：Name Server N_Port Login Accept，缩写：NS PLOGI Accept)消息。
S503，所述FC设备向所述网关设备发送域名服务器域名注册(英文：Name Server Register，缩写：NS Register)消息，所述NS Register消息用于向所述网关设备注册所述FC设备的属性。
S504，所述网关设备向所述FC设备发送域名服务器域名注册(英文：Name Server Register Accept，缩写：NS Register Accept)接受消息。
S505，所述FC设备向所述网关设备发送NS GID_FT消息，所述NS GID_FT消息用于请求所述FC设备的邻居节点的标识信息。
S506，所述网关设备接收所述NS GID_FT消息，根据保存的所述FC设备与所述标识信息的对应关系生成包含所述标识信息的Claim消息，向所述无损以太网络中的FCoE设备组播发送所述Claim消息。
所述NS GID_FT消息中携带所述FC设备的N_Port ID，网关设备收到所述NS GID_FT消息后，根据所述N_Port ID查找对应所述FC设备的标识信息，并根据所述标识信息构造包含所述标识信息的Claim消息，向无损以太网络中的FCoE设备组播发送所述Claim消息。所述标识信息可以包括：WWPN、MAC地址以及所述N_Port ID。其中，所述Claim消息的源MAC地址为网关设备中保存的、与所述FC设备的N_Port ID对应的MAC地址。所述Claim消息的目的MAC地址为标准定义的二层组播地址。
S507，所述网关设备接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的Claim Response消息。
S508，所述网关设备通过解析所述每个FCoE设备发送的Claim Response消息获得所述每个FCoE设备的标识信息，保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息。所述邻居节点的标识信息可以包括：WWPN(VN2VN_Port Name)、VN2VN_Port ID以及MAC地址。网关设备将保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息，用于后续通信使用。具体实现时，网关设备可以将所述FC设备的邻居节点的标识信息保存在表1中。
S509，所述网关设备向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带所述FC设备的邻居节点的标识信息。
至此，即完成了所述FC设备的邻居发现流程。
在本发明实施例提供的网络互通方法中，网关设备通过保存的FC设备的标识信息完成FC设备的邻居发现流程，使得FC设备获得了无损以太网络中的FCoE设备的标识信息。
参见图6，示出了本发明实施例提供的一种网络互通方法的信令图。
在图2、图4或者图5所示流程之后，本发明实施例提供的网络互通方法还可以进一步包括：
S601，所述无损以太网络中的FCoE设备中的第一FCoE设备向无损以太网络中的 设备组播发送包含所述第一FCoE设备的标识信息的Claim消息。
当无损以太网络中有新增节点，所述新增节点通过协商获得VN2VN_Port ID后，将向网络中其他设备组播发送Claim消息用于邻居发现。
S602，所述网关设备接收所述Claim消息，向所述第一FCoE设备发送Claim Response消息，所述Claim Response消息携带所述FC设备的标识信息。
具体实现时，当有多个FC设备接入所述无损以太网络时，所述网关设备将分别向所述第一FCoE设备发送包含每个FC设备的标识信息的Claim Response消息，以向所述第一FCoE设备通告各FC设备的标识信息。
S603，所述网关设备解析所述Claim消息，获得所述第一FCoE设备的标识信息，保存所述第一FCoE设备的标识信息。
S604，所述网关设备向所述FC设备发送RSCN消息，所述消息用于指示所述FC设备的邻居节点的标识信息发生更新。
S605，所述FC设备向所述网关设备发送RSCN Accept消息。
S606，所述FC设备向所述网关设备发送NS GID_FT消息，用于请求邻居节点的标识信息。
S607，所述网关设备向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带最新的所述FC设备的邻居节点的标识信息。
至此，即完成了所述FC设备的被邻居发现流程。
在本发明实施例提供的网络互通方法中，网关设备实现了FCoE设备发现FC设备的流程，使得FC设备获得了无损以太网络中的新增FCoE设备的标识信息，利于FC设备与所述新增FCoE设备通信。
参见图7，示出了本发明实施例提供的一种网络互通方法的信令图。
在图2、图4、图5或者图6所示流程之后，本发明实施例提供的网络互通方法还可以进一步包括：
S701，当所述网关设备在预定周期内未收到所述无损以太网络中的第二FCoE设备发送的心跳消息时，所述网关设备确定所述FC设备与所述第二FCoE设备心跳连接超时，更新所述FC设备的邻居节点的标识信息。
具体实现时，更新所述FC设备的邻居节点的标识信息包括：在所述FC设备的邻居节点标识信息中删除所述第二FCoE设备的标识信息。
S702，所述网关设备向所述FC设备发送RSCN消息，所述消息用于指示所述FC设备的邻居节点的标识信息发生更新。
S703，所述FC设备向所述网关设备发送RSCN Accept消息。
S704，所述FC设备向所述网关设备发送NS GID_FT消息，用于请求邻居节点的标识信息。
S705，所述网关设备向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带最新的所述FC设备的邻居节点的标识信息。
至此，即完成了所述FC设备的邻居状态变化通知流程。
在本发明实施例提供的网络互通方法中，网关设备通过保存的FC设备的标识信息实现了FCoE设备与FC设备邻居状态变化通知的流程，使得FC设备更新了其邻居节点FCoE设备的标识信息，利于FC设备与FCoE设备通信。
在本发明实施例中，网关设备还可以进行报文转发处理。其中，报文类型分为两类，数据面报文和控制面报文。控制面报文包括：(1)以太类型为以太网光纤通道初始化协议(英文：FCoE Initialization Protocol，缩写：FIP)类型的以太报文；(2)在FC报文类型中，FC目的地址为标准定义的特殊地址的报文。数据面报文包括：(1)以太类型为FCoE类型的以太报文；(2)FC目的地址为标准定义的数据类型的FC报文。
下面结合图8，对数据报文的转发流程进行详细介绍。参见图8，示出了本发明实施例提供的一种网络互通方法的流程示意图。在图2、图4、图5、图6或者图7所示流程之后，本发明实施例提供的网络互通方法还可以进一步包括：
S801，所述FC设备向所述FCoE设备发送FC数据报文。
S802，所述网关设备将所述FC数据报文封装成FCoE数据报文。
当所述网关设备接收到所述FC设备发送的FC数据报文时，根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，确定目的MAC地址和源MAC地址。具体实现时，根据FC数据报文中的源N_Port ID获得源MAC地址。根据FC数据报文中的目的N_Port ID获得目的MAC地址。在一种可能的实现方式中，FCoE数据报文的源MAC地址可以是“VN2VN-FC-MAP||S_ID”的形式，亦即由源N_Port ID添加固定位的数据即可以构造出源MAC地址。类似地，FCoE数据报文的目的MAC地址可以是“VN2VN-FC-MAP||D_ID”，亦即由目的N_Port ID添加固定位的数据即可以构造出目的MAC地址。例如，MAC地址可以是0EFD00010101，其中0EFD00为固定位，010101为N_Port ID。在本发 明实施例中，在数据面采用FC ID映射的方式获得MAC地址，可以不用查表操作，保证了转发的高性能。在另一种可能的实现方式中，所述网关设备通过查找标识信息获得MAC地址。在这一种实现方式中，网关设备根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，以及保存的FC设备与标识信息的对应关系确定与所述源N_Port ID对应的源MAC地址，以及，根据保存的FC设备的邻居节点的标识信息确定与所述目的N_Port ID对应的目的MAC地址。
参见图9，为封装后的FCoE数据报文一种实现方式示意图。如图所示，为FC数据报文封装源MAC地址(S_MAC)和目的MAC地址(D_MAC)，即可构造出FCoE数据报文。
S803，所述网关设备向与所述目的MAC地址对应的FCoE设备发送所述FCoE数据报文。
所述方法进一步包括，当接收到所述无损以太网络的FCoE设备发送的FCoE数据报文时，所述网关设备对所述FCoE数据报文进行解封装，将所述FCoE数据报文转换为FC数据报文，向所述FC设备发送所述FC数据报文。具体实现时，网关设备将所述FCoE数据报文的消息头中的MAC地址信息删除，得到FC数据报文，根据所述FC数据报文的消息头中的目的N_Port ID信息，向与所述目的N_Port ID对应的FC设备发送解封装后的所述FC数据报文。
在本发明实施例提供的网络互通方法中，网关设备可以对FCoE设备和FC设备之间的报文进行转发处理，实现了FCoE设备和FC设备的数据通信。本发明实施例提供的方法，不仅组网简单，还能够兼容现有技术的FC设备，实现FC设备与FCoE设备的互相通信。
参见图10，图10为本发明实施例提供的一种用于网络互通的网关设备1000的示意图，所示网关设备1000可以为图2、图4、图5、图6、图7或图8所示的网关设备，用于实现上述图示的网络互通方法。所述网关设备1000包括VN2VN_Port和F_Port，所述网关设备1000通过所述VN2VN_Port端口接入无损以太网络，并通过所述F_Port端口与具有N_Port的FC设备通信，所述网关设备1000还包括接收单元1001、配置单元1002、发送单元1003、存储单元1004，其中：
所述接收单元1001用于接收所述FC设备发送的FLOGI消息。
所述配置单元1002用于在所述接收单元1001接收到所述FLOGI消息后，根据所述FLOGI为所述FC设备配置标识信息；所述标识信息包括WWPN、N_Port ID以及MAC地址， 其中，所述N_Port ID用于在所述FC设备与另一FC设备通信或者所述FC设备与所述无损以太网络中的FCoE设备通信时标识所述FC设备。为所述FC设备配置的所述N_Port ID与所述FCoE设备的端口标识VN2VN_Port ID的生成规则相同。
所述发送单元1003用于接收所述配置单元1002配置的标识信息，向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的Probe Request。
所述接收单元1001还用于接收所述FCoE设备中的每个FCoE设备发送的Probe Reply；
所述存储单元1004用于当所述接收单元1001接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所述标识信息的对应关系；
其中，所述发送单元1003还用于向所述FC设备发送FLOGI Accept消息，所述FLOGI Accept消息携带所述标识信息。
优选地，所述配置单元1002具体用于:
将所述FLOGI消息中携带的N_Port Name配置为所述FC设备的WWPN；为所述FC设备配置MAC地址；为所述FC设备生成临时N_Port ID；
其中，所述发送单元1003具体用于：
向所述无损以太网络中的FCoE设备组播发送包含所述WWPN、所述MAC地址以及所述临时N_Port ID的Probe Request；
所述存储单元1004具体用于：
当所述接收单元1001接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的临时N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，将所述临时N_Port ID作为所述FC设备的N_Port ID，并保存所述FC设备与所述WWPN、所述MAC地址以及所述N_Port ID的对应关系。
优选地，所述接收单元1001还用于：
接收所述FC设备发送的NS GID_FT消息，所述NS GID_FT消息用于请求所述FC设备的邻居节点的标识信息；
所述发送单元1003还用于：
当所述接收单元1001接收到所述NS GID_FT消息时，根据保存的所述FC设备与所 述标识信息的对应关系生成包含所述标识信息的Claim消息，向所述无损以太网络中的FCoE设备组播发送所述Claim消息；
所述接收单元1001还用于：
接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的Claim Response消息，解析所述每个FCoE设备发送的Claim Response消息获得所述每个FCoE设备的标识信息，保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息；
所述发送单元1003还用于：
接收所述接收单元获得的所述FC设备的邻居节点的标识信息，向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息中携带所述FC设备的邻居节点的标识信息。
优选地，所述接收单元1001还用于：
接收所述无损以太网络中的FCoE设备中的第一FCoE设备发送的Claim消息，解析所述Claim消息获得所述第一FCoE设备的标识信息，保存所述第一FCoE设备的标识信息；
所述发送单元1003还用于：
向所述第一FCoE设备发送Claim Response消息，所述Claim Response消息携带对应所述FC设备的标识信息。
结合第二方面的第二种可能的实现方式或第三种可能的实现方式，在第二方面的第四种可能的实现方式中，所述设备1000还包括：
更新单元，用于当在预定周期内未收到所述无损以太网络中的第二FCoE设备发送的心跳消息时，确定所述FC设备与所述第二FCoE设备心跳连接超时，更新所述FC设备的邻居节点的标识信息；其中，更新所述FC设备的邻居节点的标识信息包括：在所述FC设备的邻居节点标识信息中删除与所述第二FCoE设备的标识信息。
所述发送单元1003还用于：向所述FC设备发送RSCN消息，所述RSCN消息用于指示所述FC设备的邻居节点的标识信息发生更新；
所述接收单元1001还用于：接收所述FC设备发送的NS GID_FT消息；
所述发送单元1003还用于：向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带更新后的所述FC设备的邻居节点的标识信息。
优选地，所述接收单元1001还用于：
接收所述FC设备发送的FC数据报文；
所述发送单元1003还用于：当所述接收单元1001接收到所述FC设备发送的FC数据报文时，根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，确定目的MAC地址和源MAC地址，将所述FC数据报文封装成包含所述目的MAC地址和所述源目的MAC地址的FCoE数据报文，向与所述目的MAC地址对应的FCoE设备发送所述FCoE数据报文。
参见图11，图11为本发明实施例提供的一种用于网络互通的网关设备1100。该网关设备1100可以为图2、图4、图5、图6、图7或图8所示的网关设备，用于实现上述图示的网络互通方法。参见图11，网关设备1100可包括处理器1101，网络接口1102，存储器1103，和通信总线1104，所述通信总线用于实现处理器1101，网络接口1102，存储器1103之间的连接通信。该处理器1101可以为CPU，存储器1103可能包含高速随机存取存储器(Random Access Memory，RAM)，也可能还包括非易失性的存储器(non-volatile memory)，例如至少一个磁盘存储器。所述存储器1103用于存储一组程序指令，所述处理器1101用于调用所述存储器1103存储的程序指令执行相应操作。其中，所述网络接口1102包括VN2VN_Port和F_Port，所述网关设备1100通过所述VN2VN_Port接入无损以太网络，并通过所述F_Port与具有N_Port的FC设备通信。其中，所述处理器1101调用所述存储器1103中的程序指令以用于：
接收所述FC设备发送的网络注册FLOGI消息，根据所述FLOGI消息为所述FC设备配置标识信息；所述标识信息包括全球唯一端口名称WWPN、N端口标识N_Port ID以及介质访问控制MAC地址，其中，所述N_Port ID用于在所述FC设备与另一FC设备通信或者所述FC设备与所述无损以太网络中的FCoE设备通信时标识所述FC设备；为所述FC设备配置的所述N_Port ID与所述FCoE设备的端口标识VN2VN_Port ID的生成规则相同；
向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的探测请求Probe Request；
当接收到所述FCoE设备中的每个FCoE设备发送的探测响应Probe Reply，且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所述标识信息的对应关系；
向所述FC设备发送网络注册接受FLOGI Accept消息，所述FLOGI Accept消息中携带所述标识信息。
优选地，所述处理器1101调用所述存储器1103中的程序指令还用于：将所述FLOGI消息中携带的N端口名称N_Port Name配置为所述FC设备的WWPN；为所述FC设备配置MAC地址；为所述FC设备生成临时N_Port ID；
其中，所述向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的探测请求Probe Request包括：向所述无损以太网络中的FCoE设备组播发送包含所述WWPN、所述MAC地址以及所述临时N_Port ID的Probe Request；
所述当接收到所述FCoE设备中的每个FCoE设备发送的探测响应Probe Reply，且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所述标识信息的对应关系包括：当接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的所述临时N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，将所述临时N_Port ID作为所述FC设备的N_Port ID，并保存所述FC设备与所述WWPN、MAC地址以及所述N_Port ID的对应关系。
优选地，所述处理器1101调用所述存储器1103中的程序指令还用于：
接收所述FC设备发送的域名服务器端口标识信息请求NS GID_FT消息，所述NS GID_FT消息用于请求所述FC设备的邻居节点的标识信息；
根据保存的所述FC设备与所述标识信息的对应关系生成包含所述标识信息的邻居发现Claim消息，向所述无损以太网络中的FCoE设备组播发送所述Claim消息；
接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的邻居发现响应Claim Response消息，解析所述每个FCoE设备发送的Claim Response消息获得所述每个FCoE设备的标识信息，保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息；
向所述FC设备发送域名服务器端口标识信息响应NS GID_FT Accept消息，所述NS GID_FT Accept消息携带所述FC设备的邻居节点的标识信息。
优选地，所述处理器1101调用所述存储器1103中的程序指令还用于：
接收所述无损以太网络中的FCoE设备中的第一FCoE设备发送的Claim消息，解析所述Claim消息获得所述第一FCoE设备的标识信息，保存所述第一FCoE设备的标识信息；
向所述第一FCoE设备发送Claim Response消息，所述Claim Response消息携带 所述FC设备的标识信息。
优选地，所述处理器1101调用所述存储器1103中的程序指令还用于：
当在预定周期内未收到所述无损以太网络中的第二FCoE设备发送的心跳消息时，确定所述FC设备与所述第二FCoE设备心跳连接超时，更新所述FC设备的邻居节点的标识信息；
其中，所述更新所述FC设备的邻居节点的标识信息包括：
在所述FC设备的邻居节点标识信息中删除所述第二FCoE设备的标识信息。
优选地，所述处理器1101调用所述存储器1103中的程序指令还用于：
向所述FC设备发送注册状态变化通知RSCN消息，所述RSCN消息用于指示所述FC设备的邻居节点的标识信息发生更新；
接收所述FC设备发送的NS GID_FT消息；
向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带更新后的所述FC设备的邻居节点的标识信息。
优选地，所述处理器1101调用所述存储器1103中的程序指令还用于：
当接收到所述FC设备发送的FC数据报文时，根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，确定目的MAC地址和源MAC地址；
将所述FC数据报文封装成包含所述目的MAC地址和所述源目的MAC地址的FCoE数据报文，向与所述目的MAC地址对应的FCoE设备发送所述FCoE数据报文。
在本发明实施例提供的网关设备，通过VN2VN_Port端口接入无损以太网络，并通过F_Port端口与具有N_Port的FC设备相连，在接收到所述FC设备发送的FLOGI消息后，为所述FC设备配置标识信息，并通过Probe Request消息与FCoE设备协商标识信息，在根据以太网络中的FCoE设备返回的Probe Response消息确定为所述FC设备配置的标识信息不与以太网络中的任何FCoE设备的标识信息冲突时，保存所述FC设备与所述标识信息的对应关系，并将所述标识信息发送给FC设备。本发明实施例提供的网关设备以较低的成本实现了具有VN_Port的FCoE设备与具有N-Port的FC设备的互通，组网简单，易于应用。
本发明方案可以在由计算机执行的计算机可执行指令的一般上下文中描述，例如程序单元。一般地，程序单元包括执行特定任务或实现特定抽象数据类型的例程、程序、对象、组件、数据结构等等。也可以在分布式计算环境中实践本发明方案，在这些分布式计算环境中，由通过通信网络而被连接的远程处理设备来执行任务。在分布式计算环 境中，程序单元可以位于包括存储设备在内的本地和远程计算机存储介质中。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其它实施例的不同之处。尤其，对于装置实施例而言，由于其基本相似于方法实施例，所以描述得比较简单，相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
以上对本发明实施例进行了详细介绍，本文中应用了具体实施方式对本发明进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及设备；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (14)

  1. 一种网络互通方法，其特征在于，应用于网关设备，所述网关设备包括虚拟N端口-虚拟N端口网络接入端口VN2VN_Port和光纤通道网络接入端口F_Port，所述网关设备通过所述VN2VN_Port接入无损以太网络，并通过所述F_Port与具有N端口N_Port的光纤通道FC设备通信，所述方法包括：
    接收所述FC设备发送的网络注册FLOGI消息，根据所述FLOGI消息为所述FC设备配置标识信息；所述标识信息包括全球唯一端口名称WWPN、N端口标识N_Port ID以及介质访问控制MAC地址，其中，所述N_Port ID用于在所述FC设备与另一FC设备通信或者所述FC设备与所述无损以太网络中的FCoE设备通信时标识所述FC设备；为所述FC设备配置的所述N_Port ID与所述FCoE设备的端口标识VN2VN_Port ID的生成规则相同；
    向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的探测请求Probe Request；
    当接收到所述FCoE设备中的每个FCoE设备发送的探测响应Probe Reply，且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所述标识信息的对应关系；
    向所述FC设备发送网络注册接受FLOGI Accept消息，所述FLOGI Accept消息中携带所述标识信息。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述FLOGI消息为所述FC设备配置标识信息包括：
    将所述FLOGI消息中携带的N端口名称N_Port Name配置为所述FC设备的WWPN；
    为所述FC设备配置MAC地址；
    为所述FC设备生成临时N_Port ID；
    其中，所述向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的探测请求Probe Request包括：
    向所述无损以太网络中的FCoE设备组播发送包含所述WWPN、所述MAC地址以及所述临时N_Port ID的Probe Request；
    所述当接收到所述FCoE设备中的每个FCoE设备发送的探测响应Probe Reply，且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与 所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，保存所述FC设备与所述标识信息的对应关系包括：
    当接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的所述临时N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，将所述临时N_Port ID作为所述FC设备的N_Port ID，并保存所述FC设备与所述WWPN、MAC地址以及所述N_Port ID的对应关系。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    接收所述FC设备发送的域名服务器端口标识信息请求NS GID_FT消息，所述NS GID_FT消息用于请求所述FC设备的邻居节点的标识信息；
    根据保存的所述FC设备与所述标识信息的对应关系生成包含所述标识信息的邻居发现Claim消息，向所述无损以太网络中的FCoE设备组播发送所述Claim消息；
    接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的邻居发现响应Claim Response消息，解析所述每个FCoE设备发送的Claim Response消息获得所述每个FCoE设备的标识信息，保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息；
    向所述FC设备发送域名服务器端口标识信息响应NS GID_FT Accept消息，所述NS GID_FT Accept消息携带所述FC设备的邻居节点的标识信息。
  4. 根据权利要求1至3任意一项所述的方法，其特征在于，所述方法还包括：
    接收所述无损以太网络中的FCoE设备中的第一FCoE设备发送的Claim消息，解析所述Claim消息获得所述第一FCoE设备的标识信息，保存所述第一FCoE设备的标识信息；
    向所述第一FCoE设备发送Claim Response消息，所述Claim Response消息携带所述FC设备的标识信息。
  5. 根据权利要求3或4所述的方法，其特征在于，所述方法还包括：
    当在预定周期内未收到所述无损以太网络中的第二FCoE设备发送的心跳消息时，确定所述FC设备与所述第二FCoE设备心跳连接超时，更新所述FC设备的邻居节点的标识信息；
    其中，所述更新所述FC设备的邻居节点的标识信息包括：
    在所述FC设备的邻居节点标识信息中删除所述第二FCoE设备的标识信息。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    向所述FC设备发送注册状态变化通知RSCN消息，所述RSCN消息用于指示所述FC设备的邻居节点的标识信息发生更新；
    接收所述FC设备发送的NS GID_FT消息；
    向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带更新后的所述FC设备的邻居节点的标识信息。
  7. 根据权利要求1至6任意一项所述的方法，其特征在于，所述方法还包括：
    当接收到所述FC设备发送的FC数据报文时，根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，确定目的MAC地址和源MAC地址；
    将所述FC数据报文封装成包含所述目的MAC地址和所述源目的MAC地址的FCoE数据报文，向与所述目的MAC地址对应的FCoE设备发送所述FCoE数据报文。
  8. 一种用于网络互通的网关设备，其特征在于，所述网关设备包括虚拟N端口-虚拟N端口网络接入端口VN2VN_Port和光纤通道网络接入端口F_Port，所述网关设备通过所述VN2VN_Port接入无损以太网络，并通过所述F_Port端口与具有N端口N_Port的光纤通道FC设备通信，所述网关设备还包括接收单元、配置单元、发送单元、存储单元，其中：
    所述接收单元用于接收所述FC设备发送的网络注册FLOGI消息；
    所述配置单元用于在所述接收单元接收到所述FLOGI消息后，根据所述FLOGI为所述FC设备配置标识信息；所述标识信息包括全球唯一端口名称WWPN、N端口标识N_Port ID以及介质访问控制MAC地址，其中，所述N_Port ID用于在所述FC设备与另一FC设备通信或者所述FC设备与所述无损以太网络中的FCoE设备通信时标识所述FC设备；为所述FC设备配置的所述N_Port ID与所述FCoE设备的端口标识VN2VN_Port ID的生成规则相同；
    所述发送单元用于接收所述配置单元配置的标识信息，向所述无损以太网络中的FCoE设备组播发送包含所述标识信息的探测请求Probe Request；
    所述接收单元还用于：接收所述FCoE设备中的每个FCoE设备发送的探测响应Probe Reply；
    所述存储单元用于当所述接收单元接收到所述FCoE设备中的每个FCoE设备发送的探测响应Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突 时，保存所述FC设备与所述标识信息的对应关系；
    其中，所述发送单元还用于向所述FC设备发送网络注册接受FLOGI Accept消息，所述FLOGI Accept消息携带所述标识信息。
  9. 根据权利要求8所述的设备，其特征在于，所述配置单元具体用于:
    将所述FLOGI消息中携带的N端口名称N_Port Name配置为所述FC设备的WWPN；为所述FC设备配置MAC地址；为所述FC设备生成临时N_Port ID；
    其中，所述发送单元具体用于：
    向所述无损以太网络中的FCoE设备组播发送包含所述WWPN、所述MAC地址以及所述临时N_Port ID的Probe Request；
    所述存储单元具体用于：
    当所述接收单元接收到所述FCoE设备中的每个FCoE设备发送的Probe Reply且根据所述每个FCoE设备发送的Probe Reply确定为所述FC设备配置的所述临时N_Port ID不与所述无损以太网络中的任何FCoE设备的VN2VN_Port ID冲突时，将所述临时N_Port ID作为所述FC设备的N_Port ID，并保存所述FC设备与所述WWPN、所述MAC地址以及所述N_Port ID的对应关系。
  10. 根据权利要求8或9所述的设备，其特征在于，所述接收单元还用于：
    接收所述FC设备发送的域名服务器端口标识信息请求NS GID_FT消息，所述NS GID_FT消息用于请求所述FC设备的邻居节点的标识信息；
    所述发送单元还用于：
    当所述接收单元接收到所述NS GID_FT消息时，根据保存的所述FC设备与所述标识信息的对应关系生成包含所述标识信息的邻居发现Claim消息，向所述无损以太网络中的FCoE设备组播发送所述Claim消息；
    所述接收单元还用于：
    接收所述无损以太网络中的FCoE设备中的每个FCoE设备发送的邻居发现响应Claim Response消息，解析所述每个FCoE设备发送的Claim Response消息获得所述每个FCoE设备的标识信息，保存所述每个FCoE设备的标识信息作为所述FC设备的邻居节点的标识信息；
    所述发送单元还用于：
    接收所述接收单元获得的所述FC设备的邻居节点的标识信息，向所述FC设备发送域名服务器端口标识信息响应NS GID_FT Accept消息，所述NS GID_FT Accept消息中 携带所述FC设备的邻居节点的标识信息。
  11. 根据权利要求8至10任意一项所述的设备，其特征在于，所述接收单元还用于：
    接收所述无损以太网络中的FCoE设备中的第一FCoE设备发送的Claim消息，解析所述Claim消息获得所述第一FCoE设备的标识信息，保存所述第一FCoE设备的标识信息；
    所述发送单元还用于：
    向所述第一FCoE设备发送Claim Response消息，所述Claim Response消息携带对应所述FC设备的标识信息。
  12. 根据权利要求10或11所述的设备，其特征在于，所述设备还包括：
    更新单元，用于当在预定周期内未收到所述无损以太网络中的第二FCoE设备发送的心跳消息时，确定所述FC设备与所述第二FCoE设备心跳连接超时，更新所述FC设备的邻居节点的标识信息；其中，更新所述FC设备的邻居节点的标识信息包括：在所述FC设备的邻居节点标识信息中删除所述第二FCoE设备的标识信息。
  13. 根据权利要求12所述的设备，其特征在于，所述发送单元还用于：
    向所述FC设备发送注册状态变化通知RSCN消息，所述RSCN消息用于指示所述FC设备的邻居节点的标识信息发生更新；
    所述接收单元还用于：接收所述FC设备发送的NS GID_FT消息；
    所述发送单元还用于：向所述FC设备发送NS GID_FT Accept消息，所述NS GID_FT Accept消息携带更新后的所述FC设备的邻居节点的标识信息。
  14. 根据权利要求8-13任意一项所述的设备，其特征在于，所述接收单元还用于：接收所述FC设备发送的FC数据报文；
    所述发送单元还用于：当所述接收单元接收到所述FC设备发送的FC数据报文时，根据所述FC数据报文中包含的目的N_Port ID和源N_Port ID，确定目的MAC地址和源MAC地址，将所述FC数据报文封装成包含所述目的MAC地址和所述源目的MAC地址的FCoE数据报文，向与所述目的MAC地址对应的FCoE设备发送所述发送所述FCoE数据报文。
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