CN101499951A - Tunnel configuration method, virtual access node, virtual edge node and system - Google Patents
Tunnel configuration method, virtual access node, virtual edge node and system Download PDFInfo
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- CN101499951A CN101499951A CNA2008100060721A CN200810006072A CN101499951A CN 101499951 A CN101499951 A CN 101499951A CN A2008100060721 A CNA2008100060721 A CN A2008100060721A CN 200810006072 A CN200810006072 A CN 200810006072A CN 101499951 A CN101499951 A CN 101499951A
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Abstract
The invention discloses a tunnel configuration method, a virtual access node, a virtual edge node and a system. The tunnel between an IP edge node and a virtual AN is established dynamically, and then the tunnel is provided for an SP network device to realize the control of a port division by the SP network device. The problem of low utilization of the tunnel caused by a PBT tunnel static configuration in the prior art is avoided, and as the tunnel can be allocated dynamically, when a fault occurs in the configuration tunnel, the SP can reapply for a tunnel for service, thus ensuring normal communication.
Description
Technical field
The present invention relates to the provider backbone transmission technology, be specifically related to tunnel configuration method, virtual access node, virtual fringe node and system.
Background technology
(Provider Backbone Transport, PBT) technology is that (Provider Backbone Bridge PBB) improves on the standard in provider backbone bridging based on the 802.1ah standard in the provider backbone transmission.The target of PBB technology is, allows the provider backbone bridging network (PBBN) under the 802.1ad standard code to support maximum 2
20Individual service VLAN.And PBB has also defined framework and the bridged protocol of PBBN, with the compatibility that realizes a plurality of PBB networks with interconnect.
PBB adopts the encapsulation of MAC Address in MAC Address, is about to terminal use's ethernet data frame and is packaged into operator's Ethernet frame head again, forms two MAC Address, in operator's core net, only carries out flow according to the MAC Address of a back encapsulation and transmits.The benefit that this technology is brought is, makes Ethernet autgmentability and obtained very big lifting as the ability of network transmission technology.But there is traffic engineering problem in PBB, and for example flow control under the multimode route, access control and professional control, 50ms even 20ms switch or failover capability, and QoS guarantee end to end etc.Under the promotion of these business demands, PBB is modified into for PBT.
The PBT technology has following feature:
1. the equipment of realizing PBT need be supported IVL;
2. on the relevant equipment of PBT, specify the VLAN of a part of VLAN, separate use, be independent of each other with other Common VLAN as PBT;
3. in the VLAN of PBT, close MAC address learning and Spanning-Tree Protocol;
4. in the VLAN of PBT, close broadcasting and the multicast and the broadcast capability of unknown message;
5. the MAC Address and the PBTVID of configuration purpose equipment on the Ethernet switch of a series of support IVL, and carry out message according to this configuration as the sign (being label) of passage and transmit, its pass-through mode is identical with the 802.1Q pass-through mode of standard.
MAC Address, VID and pass-through mode and IEEE 802.1q conformance to standard that the PBT technology is used.
The PBT technology is formed label by the MAC Address and the PBT VID of destination device, on the Ethernet switch of a series of support IVL, transmit, (Ethernet Switched Path, ESP), this path can think that one connects or the tunnel to have formed the Ethernet switching path.
In research and practice process to prior art, the inventor finds that there is following problem in prior art: at present, PBT is mainly used in the wholesale scene of Access Network, Internet protocol (the InternetProtocol of operator by connecting, IP) fringe node carries out business to the user in the PBT net provides, wholesale tunnel as Access Network, the PBT tunnel that SP inserts the PBT network is network maintenance staff's static configuration, the mode of this static configuration causes the tunnel utilance low, the wasting of resources and when the tunnel breaks down can't be set up new tunnel and be realized communicating to connect.
Summary of the invention
The technical problem that the embodiment of the invention solves provides tunnel configuration method, virtual access node, virtual fringe node and system, can realize the dynamic assignment in PBT tunnel.
The embodiment of the invention provides a kind of provider backbone transmission PBT tunnel configuration method, comprising: the virtual mac address of configuration virtual access node or the virtual mac address of virtual fringe node;
By layer two control L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the fringe node, or pairing the transmitting of PBT tunnel label between described virtual access node and the described virtual fringe node, or pairing the transmitting of PBT tunnel label between access node and the described virtual fringe node.
Described virtual access node and described fringe node be by described PBT tunnel communication, or described virtual access node and described virtual fringe node be by described PBT tunnel communication, or described access node and described virtual fringe node pass through described PBT tunnel communication.
The embodiment of the invention provides the virtual access node of a kind of provider backbone transmission PBT, comprising:
Memory cell is used to store the virtual mac address of pre-configured described virtual access node;
Port subregion interface processing unit is used for receiving or sending datagram from described virtual mac address corresponding port;
PBT tunnel configuration unit, be used for agreement by L2C, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the fringe node, described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node;
PBT tunnel processing unit is used for according to described PBT tunnel label, and the data message that described port subregion interface processing unit is received carries out PBT frame encapsulation process, and the data message after the encapsulation is transmitted by described PBT tunnel; Receive the PBT frame data message that transmits in the described PBT tunnel, carry out the decapsulation of PBT frame according to described PBT tunnel label and handle, the data message after the decapsulation is sent to described port subregion interface processing unit.
The embodiment of the invention provides the virtual fringe node of a kind of provider backbone transmission PBT, it is characterized in that, comprising:
Memory cell is used to store the virtual mac address of pre-configured described virtual fringe node;
The L2C functional unit is used to receive the PBT tunnel configuration request that the SP network equipment sends, and sends the request of described PBT tunnel configuration to the L2C agent equipment;
PBT tunnel configuration unit, be used under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the access node, described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual fringe node, VLAN and described access node;
PBT tunnel processing unit is used to receive the data message from the SP network equipment, carries out PBT frame encapsulation process according to described PBT tunnel label, and the data message after the encapsulation is transmitted by described PBT tunnel; Receive the PBT frame data message that transmits in the described PBT tunnel, carry out the decapsulation of PBT frame according to described PBT tunnel label and handle, the data message after the decapsulation is sent to the described SP network equipment.
The embodiment of the invention provides a kind of provider backbone to transmit PBT tunnel configuration system, comprising: access node and fringe node;
Described access node comprises a plurality of virtual access nodes, and described virtual access node is used to store the virtual mac address of pre-configured described virtual access node; By the L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the described fringe node; Communicate by letter with described fringe node by described PBT tunnel;
Described fringe node is used for the agreement by L2C, disposes pairing the transmitting of PBT tunnel label between described fringe node and the described virtual access node; Communicate by letter with described virtual access node by described PBT tunnel.
The embodiment of the invention provides a kind of PBT tunnel configuration system, comprising: access node and fringe node;
Described fringe node comprises: L2C agent equipment and a plurality of virtual fringe node; Described virtual fringe node is used to store the virtual mac address of pre-configured described virtual fringe node; Receive the PBT tunnel configuration request that the SP network equipment sends, send the request of described PBT tunnel configuration to described L2C agent equipment; Under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the described access node; Communicate by letter with described access node by described PBT tunnel;
Described access node is used for by pairing the transmitting of PBT tunnel label between described access node of L2C protocol configuration and the described virtual fringe node; Communicate by letter with described virtual fringe node by described PBT tunnel.
The embodiment of the invention provides a kind of PBT tunnel configuration system, comprising: access node and fringe node;
Described access node comprises a plurality of virtual access nodes, and described fringe node comprises: L2C agent equipment and a plurality of virtual fringe node;
Described virtual access node is used to store the virtual mac address of pre-configured described virtual access node; By the L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the described virtual fringe node; Communicate by letter with described virtual fringe node by described PBT tunnel;
Described virtual fringe node is used to store the virtual mac address of pre-configured described virtual fringe node; Receive the PBT tunnel configuration request that the SP network equipment sends, send the request of described PBT tunnel configuration to described L2C agent equipment; Under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the described virtual access node; Communicate by letter with described virtual access node by described PBT tunnel.
Adopt technique scheme, embodiment of the invention beneficial technical effects is:
In the embodiment of the invention, by dynamically setting up the IP fringe node to the tunnel between the virtual A N, the tunnel is being offered the use of the SP network equipment, realize of the control of the SP network equipment, avoided in the prior art the low problem of tunnel utilance that PBT tunnel static configuration is brought the port subregion, and because the tunnel can dynamic assignment, then break down when the tunnel of configuration, SP can apply for again that the tunnel is its service, guarantees the normal of communication.
Description of drawings
Fig. 1 is the structural representation that the embodiment of the invention one is supported the virtual A N equipment of PBT;
Fig. 2 is the structural representation that the embodiment of the invention two is supported the virtual A N equipment of PBT;
Fig. 3 is the structural representation of the embodiment of the invention three virtual PBT fringe nodes;
Fig. 4 is the structural representation of the embodiment of the invention four PBT tunnel configuration systems;
Fig. 5 is the structural representation of the embodiment of the invention five PBT tunnel configuration systems;
Fig. 6 is the structural representation of the embodiment of the invention six PBT tunnel configuration systems;
Fig. 7 is the structural representation of the embodiment of the invention seven PBT tunnel configuration systems;
Fig. 8 is the structural representation of the embodiment of the invention eight PBT tunnel configuration systems;
Fig. 9 is the structural representation of the embodiment of the invention nine PBT tunnel configuration systems;
Figure 10 is the structural representation of the embodiment of the invention ten access node apparatus;
Figure 11 is the structural representation of the embodiment of the invention 11 IP fringe node equipment;
Figure 12 is the flow chart of the embodiment of the invention 12 provider backbones transmission PBT tunnel configuration method;
Figure 13 is the flow chart of the application examples one of the embodiment of the invention 12;
Figure 14 is the flow chart of the application examples two of the embodiment of the invention 13.
Embodiment
The embodiment of the invention provides tunnel configuration method, virtual A N, virtual IP address edge device and tunnel configuration system, can realize the dynamic assignment in PBT tunnel.
The technical problem that a kind of embodiment of the invention provided by the invention is solved provides tunnel configuration method, virtual A N, virtual IP address edge device and tunnel configuration system and is described in detail below.
Embodiment one, a kind of virtual A N equipment 100 of supporting PBT, and structural representation comprises as shown in Figure 1: port subregion interface processing unit 110, PBT tunnel configuration unit 120, PBT tunnel processing unit 130 and memory cell 140;
Described port subregion interface processing unit 110 is used for receiving or sending datagram from the virtual mac address corresponding port of cell stores;
Described PBT tunnel configuration unit 120, be used for agreement by L2C, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the fringe node, described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node;
Described PBT tunnel configuration unit 120, also be used for by described L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the virtual fringe node, described PBT tunnel label comprises: the virtual mac address of the virtual mac address of described virtual access node, VLAN and described virtual fringe node.
Described PBT tunnel processing unit 130 is used for the data message of receiving from port subregion interface processing unit, carry out PBT frame encapsulation process according to the label in the PBT tunnel of PBT tunnel configuration configuration of cells after, be transmitted to destination device; Or receive PBT frame from miscellaneous equipment, according to the label in the PBT tunnel of PBT tunnel configuration configuration of cells, after carrying out the decapsulation of PBT frame and handling, data message is issued port subregion interface processing unit 110 handle.
In the embodiment of the invention, the label in described PBT tunnel can comprise: the descending ESP of virtual mac address (target MAC (Media Access Control) address) sign of the up ESP of the virtual mac address of virtual A N (source MAC)+VLAN+ target MAC (Media Access Control) address (as the BNG MAC Address) sign and/or source MAC (as the BNG MAC Address)+VLAN+AN.
Embodiment two, a kind of virtual A N equipment of supporting PBT, and structural representation comprises as shown in Figure 2: port subregion interface processing unit 210, PBT tunnel configuration unit 220, PBT tunnel processing unit 230 and memory cell 240;
Described port subregion interface processing unit 210 is used for receiving or sending datagram from the virtual mac address corresponding port of memory cell 240 storage;
Described PBT tunnel configuration unit 220, be used for agreement by L2C, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the fringe node, described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node;
Described PBT tunnel configuration unit 220, also be used for by described L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the virtual fringe node, described PBT tunnel label comprises: the virtual mac address of the virtual mac address of described virtual access node, VLAN and described virtual fringe node.
Described PBT tunnel processing unit 230 is used for the data message of receiving from port subregion interface processing unit, carry out PBT frame encapsulation process according to the label in the PBT tunnel of PBT tunnel configuration configuration of cells after, be transmitted to destination device; Or receive PBT frame from miscellaneous equipment, according to the label in the PBT tunnel of PBT tunnel configuration configuration of cells, after carrying out the decapsulation of PBT frame and handling, data message is issued port subregion interface processing unit processes 220.
Described PBT tunnel processing unit 230, also be used for judging according to the tunnel label of the virtual A N of described PBT tunnel configuration unit 230 configuration whether described message from 210 receptions of port subregion interface processing unit is received by this virtual A N, handle if then carry out the decapsulation of PBT frame, the data message after the decapsulation is sent to described port subregion interface processing unit according to described PBT tunnel label.
In the embodiment of the invention, the label in described PBT tunnel can comprise: the descending ESP of virtual mac address (target MAC (Media Access Control) address) sign of the up ESP of the virtual mac address of virtual A N (source MAC)+VLAN+ target MAC (Media Access Control) address (as the BNG MAC Address) sign and/or source MAC (as the BNG MAC Address)+VLAN+AN.
The embodiment of the invention three, a kind of virtual PBT fringe node 300, structural representation comprises as shown in Figure 3: L2C functional unit 310, PBT tunnel configuration unit 320, PBT tunnel processing unit 330 and memory cell 340;
L2C functional unit 310 is used to receive the PBT tunnel configuration request that the SP network equipment sends, and sends the request of described PBT tunnel configuration to the L2C agent equipment;
PBT tunnel configuration unit 320, be used under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual IP address fringe node 300 of L2C protocol configuration and the access node, described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual fringe node, VLAN and described access node;
Described PBT tunnel configuration unit 320, also be used under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the virtual access node, described PBT tunnel label comprises: the virtual mac address of the virtual mac address of described virtual fringe node, VLAN and described virtual access node;
PBT tunnel processing unit 330 is used to receive the data message from the SP network equipment, presses the label in the PBT tunnel of PBT tunnel configuration unit 320 configuration, carry out PBT frame encapsulation process after, the PBT frame is sent to destination device by described PBT tunnel; Reception from miscellaneous equipment come the PBT frame, press the label in the PBT tunnel of PBT tunnel configuration unit 320 configurations, after carrying out the decapsulation of PBT frame and handling, with data message forwarding to the SP network equipment.
In the embodiment of the invention, the label in described PBT tunnel comprises: the up ESP of source MAC (as the MAC Address of AN)+VLAN+ virtual IP address fringe node MAC Address (target MAC (Media Access Control) address) sign and/or the descending ESP of virtual IP address fringe node MAC Address (source MAC)+VLAN+ target MAC (Media Access Control) address (as the MAC Address of AN) sign.
Be understandable that, described PBT tunnel processing unit 330, also be used for according to described PBT tunnel label, judge whether the PBT frame data message that transmits in the PBT tunnel of described reception should be received by this virtual fringe node, handle if then carry out the decapsulation of PBT frame, the data message after the decapsulation is sent to the described SP network equipment according to described PBT tunnel label.
Be understandable that described L2C functional unit specifically comprises:
Receiving element is used to receive the PBT tunnel configuration request that the SP network equipment sends by expansion multi protocol label exchange GMPLS signaling;
Converting unit is used for described GMPLS signaling is converted to the L2C signaling;
Transmitting element is used for sending the request of described PBT tunnel configuration to the L2C agent equipment by described L2C signaling.
The embodiment of the invention four, a kind of PBT tunnel configuration system, the system configuration schematic diagram comprises as shown in Figure 4: access node (AN) 410 and IP fringe node 420;
Described access node 410 comprises a plurality of virtual A N, virtual A N1～virtual A Nn;
Described each virtual A N is used to store the virtual mac address of pre-configured described virtual access node; By the L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the described fringe node; Communicate by letter with described fringe node by described PBT tunnel;
Described IP fringe node can and described virtual A N1～virtual A Nn set up many (n bar) PBT tunnels between described fringe node and the virtual A N alternately; When the PBT tunnel distributing request of receiving the SP network equipment, for the described SP network equipment distributes the PBT tunnel.Described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node.
Be understandable that the described process of setting up the PBT tunnel between described fringe node and the virtual A N is that the PBT tunnel configuration unit of L2C and each virtual A N inside is set up a data transmit path alternately.
Be understandable that each virtual A N comprises a port subregion, the SP network equipment manages by the port subregion of described PBT tunnel corresponding virtual AN.
In the embodiment of the invention, the label in described PBT tunnel comprises: the descending ESP of virtual mac address (target MAC (Media Access Control) address) sign of the up ESP of the virtual mac address of virtual A N (source MAC)+VLAN+ target MAC (Media Access Control) address (as the BNG MAC Address) sign and/or source MAC (as the BNG MAC Address)+VLAN+AN.
Embodiment five, and a kind of PBT tunnel configuration system in conjunction with concrete application example, is described in detail the embodiment of the invention four technical schemes in the present embodiment.
Structural representation comprises as shown in Figure 5:
Described access node 510 comprises a plurality of virtual A N, virtual A N1～virtual A Nn;
Each virtual A N is made up of port subregion interface processing unit 511, PBT tunnel configuration unit 512 and ANPBT tunnel processing unit 513.
Described L2C functional unit 521 is set up the PBT tunnel alternately with the PBT tunnel configuration unit among each virtual A N;
Described PBT tunnel is based upon between the fringe node PBT tunnel processing unit 522 of the AN PBT tunnel processing unit 513 of each AN and corresponding fringe node side.
Port subregion interface processing unit 511 is used for the maintenance port partition table and receives or send datagram from the port of described port partition table.
Each virtual A N has the function of independent AN, each virtual A N supports one port subregion, wholesale service provider SP (Service Provider, for example the Internet SP that gives of the port subregion of each virtual A N, be ISP) independent control and management, realize that layer is wholesale more than two.Each virtual A N distributes a virtual mac address (VMAC address)/VLAN; Virtual mac address (source MAC)+VLAN+ target MAC (Media Access Control) address (as the MAC Address of BNG) by virtual A N is configured for wholesale up ESP and/or the virtual mac address (target MAC (Media Access Control) address) by source MAC (as the MAC Address of BNG)+VLAN+ virtual A N is configured for wholesale descending ESP.
Embodiment six, a kind of PBT tunnel configuration system, and structural representation comprises as shown in Figure 6: AN610 and IP fringe node 620;
Described AN610 comprises a plurality of virtual A N, virtual A N1～virtual A Nn;
Described AN comprises a plurality of virtual A N;
Described IP fringe node comprises: L2C agent equipment 621 and a plurality of virtual IP address fringe node, virtual IP address fringe node k～virtual IP address fringe node m; Each virtual IP address fringe node can connect a SP network equipment; Be understandable that described L2C agent equipment is autonomous device or is integrated in the IP fringe node that the existence form of L2C equipment is not construed as limiting the invention.
Described each virtual IP address fringe node, described virtual fringe node is used to store the virtual mac address of pre-configured described virtual fringe node; Receive the PBT tunnel configuration request that the SP network equipment sends, send the request of described PBT tunnel configuration to described L2C agent equipment 621; Under described L2C agent equipment 621 controls, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the described virtual access node; Communicate by letter with described virtual A N by described PBT tunnel.
Described each virtual A N is used to store the virtual mac address of pre-configured described virtual access node; By the L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the described virtual fringe node; Communicate by letter with described virtual fringe node by described PBT tunnel;
Described PBT tunnel label comprises:
The virtual mac address of the virtual mac address of described virtual access node, VLAN and described virtual fringe node.
In the present embodiment, described each virtual A N can comprise a port subregion, and the SP network equipment manages by the port subregion of the PBT tunnel corresponding virtual AN of described configuration.
In the present embodiment, described PBT tunnel comprises: the descending ESP of the up ESP of the virtual mac address of virtual A N (source MAC)+VLAN+ virtual IP address fringe node MAC Address (target MAC (Media Access Control) address) sign and virtual mac address (target MAC (Media Access Control) address) sign of virtual IP address fringe node MAC Address (source MAC)+VLAN+AN.
Embodiment seven, and a kind of PBT tunnel configuration system in conjunction with concrete application example, is described in detail the embodiment of the invention six technical schemes in the present embodiment.
Structural representation comprises as shown in Figure 7:
Comprise: AN710 and IP fringe node 720;
Described AN710 comprises a plurality of virtual A N, virtual A N1～virtual A Nn;
Described AN comprises a plurality of virtual A N;
Described IP fringe node comprises: L2C agent equipment 724 and a plurality of virtual IP address fringe node, virtual IP address fringe node k～virtual IP address fringe node m; Each virtual IP address fringe node can connect a SP network equipment;
Each virtual A N comprises: port subregion interface processing unit 711, AN PBT tunnel configuration unit 712 and AN PBT tunnel processing unit 712.
Each virtual IP address fringe node comprises: L2C functional unit 721, virtual IP address fringe node PBT tunnel configuration unit 722 and virtual IP address fringe node PBT tunnel processing unit 723;
L2C functional unit 721 is used to receive the control of the SP network equipment and initiates the wholesale configuration process in PBT tunnel; Described configuration process request is sent to the L2C agent equipment.
Described L2C agent equipment is used for the fringe node PBT tunnel configuration unit 722 and the AN PBT tunnel configuration unit 712 among each virtual A N of each IP fringe node mutual, sets up the PBT tunnel between virtual IP address fringe node PBT tunnel processing unit 723 and the AN PBT tunnel processing unit 712.
In the present embodiment, each virtual A N distributes a virtual MAC address/VLAN.IP fringe node (as: BNG/BRAS) is made of several virtual IP address fringe nodes, and each virtual IP address fringe node is made up of L2C functional unit, virtual IP address fringe node PBT tunnel configuration unit and virtual IP address fringe node PBT tunnel processing unit.
Each virtual IP address fringe node has the function of independent IP fringe node, each virtual IP address fringe node is corresponding to one service provider SP (Service Provider, for example Internet SP, i.e. ISP), can independently control and manage by relevant ISP, realize that layer is wholesale more than two.Each virtual IP address fringe node distributes a virtual mac address/VLAN; ISP disposes the label in the pairing PBT of this ISP tunnel by L2C, the label in this PBT tunnel is made of the virtual mac address and the corresponding VLAN of virtual IP address fringe node, by: the virtual mac address (target MAC (Media Access Control) address) of the virtual mac address of virtual IP address fringe node (source MAC)+VLAN+ virtual A N is configured for wholesale up ESP or passes through: virtual A N virtual mac address (source MAC)+VLAN+ " virtual IP address fringe node " virtual mac address (target MAC (Media Access Control) address) is configured for wholesale descending ESP.
Embodiment eight, and a kind of PBT tunnel configuration system comprises: access node (AN) 810 and IP fringe node 820;
Described IP fringe node comprises: L2C agent equipment 821 and a plurality of virtual IP address fringe node, virtual IP address fringe node k～virtual IP address fringe node m; Each virtual IP address fringe node can connect a SP network equipment; Be understandable that described L2C agent equipment is autonomous device or is integrated in the IP fringe node that the existence form of L2C equipment is not construed as limiting the invention.
Described each virtual IP address fringe node, described virtual fringe node is used to store the virtual mac address of pre-configured described virtual fringe node; Receive the PBT tunnel configuration request that the SP network equipment sends, send the request of described PBT tunnel configuration to described L2C agent equipment; Under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the described access node; Communicate by letter with described access node by described PBT tunnel;
Described AN is used for by pairing the transmitting of PBT tunnel label between described access node of L2C protocol configuration and the described virtual fringe node; Communicate by letter with described virtual fringe node by described PBT tunnel.
Described PBT tunnel label comprises:
The MAC Address of the virtual mac address of described virtual fringe node, VLAN and described access node.
In the present embodiment, described PBT tunnel comprises: the descending ESP of the up ESP of the MAC Address of AN (source MAC)+VLAN+ virtual IP address fringe node MAC Address (target MAC (Media Access Control) address) sign and MAC Address (target MAC (Media Access Control) address) sign of virtual IP address fringe node MAC Address (source MAC)+VLAN+AN.
Embodiment nine, and a kind of PBT tunnel configuration system in conjunction with concrete application example, is described in detail the embodiment of the invention eight technical schemes in the present embodiment.
Structural representation comprises as shown in Figure 9:
Comprise: AN910 and IP fringe node 920;
Described IP fringe node comprises: L2C agent equipment 924 and a plurality of virtual IP address fringe node, virtual IP address fringe node k～virtual IP address fringe node m; Each virtual IP address fringe node can connect a SP network equipment;
Described AN comprises: AN PBT tunnel configuration unit 911 and AN PBT tunnel processing unit 712.
Each virtual IP address fringe node comprises: L2C functional unit 921, virtual IP address fringe node PBT tunnel configuration unit 922 and virtual IP address fringe node PBT tunnel processing unit 923;
L2C functional unit 921 is used to receive the control of the SP network equipment and initiates the wholesale configuration process in PBT tunnel; Described configuration process request is sent to the L2C agent equipment.
Described L2C agent equipment is used for the fringe node PBT tunnel configuration unit 922 and the AN PBT tunnel configuration unit 911 among the described AN910 of each IP fringe node mutual, sets up the PBT tunnel between virtual IP address fringe node PBT tunnel processing unit 923 and the AN PBT tunnel processing unit 912.
In the present embodiment, each virtual A N distributes a virtual MAC address/VLAN.IP fringe node (as: BNG/BRAS) is made of several virtual IP address fringe nodes, and each virtual IP address fringe node is made up of L2C functional unit, virtual IP address fringe node PBT tunnel configuration unit and virtual IP address fringe node PBT tunnel processing unit.
Each virtual IP address fringe node has the function of independent IP fringe node, each virtual IP address fringe node is corresponding to one service provider SP (Service Provider, for example Internet SP, i.e. ISP), can independently control and manage by relevant ISP, realize that layer is wholesale more than two.Each virtual IP address fringe node distributes a virtual mac address/VLAN; ISP disposes the label in the pairing PBT of this ISP tunnel by L2C, the label in this PBT tunnel is made of the virtual mac address and the corresponding VLAN of virtual IP address fringe node, by: the MAC Address (target MAC (Media Access Control) address) of the virtual mac address of virtual IP address fringe node (source MAC)+VLAN+AN is configured for wholesale up ESP or passes through: the MAC Address of AN (source MAC)+VLAN+ " virtual IP address fringe node " virtual mac address (target MAC (Media Access Control) address) is configured for wholesale descending ESP.
Embodiment ten, a kind of access node apparatus 1000, and structural representation comprises as shown in figure 10: a plurality of virtual A N; AN1～ANn;
Described each virtual A N can be used for setting up the PBT tunnel with the IP fringe node; The SP network equipment that is connected with the IP fringe node provides service by described PBT tunnel for the user; Each virtual A N is assigned with a virtual mac address/LAN; Be used to form and the IP fringe node between tunnel label.
Embodiment 11, a kind of IP fringe node equipment 1100, and structural representation comprises as shown in figure 11:
A plurality of virtual IP address fringe nodes; Virtual IP address fringe node k～virtual IP address fringe node m;
Described each virtual IP address fringe node can connect a SP network equipment;
Described each virtual IP address fringe node is used for setting up the PBT tunnel with AN; The SP network equipment provides service by described PBT tunnel for the user; Described each virtual IP address fringe node is assigned with a virtual mac address/LAN; Be used to form and the IP fringe node between tunnel label.
Embodiment 12, a kind of provider backbone transmission PBT tunnel configuration method, and flow process is as follows:
A1, the virtual mac address of configuration virtual access node or the virtual mac address of virtual fringe node:
A2, by the L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the fringe node, or pairing the transmitting of PBT tunnel label between described virtual access node and the described virtual fringe node, or pairing the transmitting of PBT tunnel label between access node and the described virtual fringe node.
PBT tunnel label between described virtual access node and the fringe node comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node;
Or the PBT tunnel label between described virtual access node and the described virtual fringe node comprises: the virtual mac address of the virtual mac address of described virtual access node, VLAN and described virtual fringe node;
Or the PBT tunnel label between described access node and the described virtual fringe node comprises: the virtual mac address of the MAC Address of described access node, VLAN and described virtual fringe node.
A3 is by described PBT tunnel communication.
Provide the application examples of the embodiment of the invention 12 methods to be elaborated below.
Application examples one, a kind of provider backbone transmission PBT tunnel configuration method, flow process, comprising shown in 13 as figure:
B1, the virtual mac address of configuration virtual AN;
Be understandable that the virtual mac address of configuration virtual AN can be configured by layer two control protocol (L2C), also can dispose that the concrete configuration mode can have and multiplely is not construed as limiting the invention by other modes.
B2, the SP network equipment sends the request of adding the PBT tunnel to the IP fringe node, and described request can be passed through the GMPLS signaling bear.
B3, an end points in configuration PBT tunnel;
A described end points is corresponding with IP fringe node or IP fringe node internal virtual IP fringe node MAC Address; Here an end points that disposes the PBT tunnel is meant configuration by the end points of IP fringe node to the path of access node, as: the pairing PBT tunnel at IP fringe node or IP fringe node internal virtual IP fringe node of configuration PBT tunnel label is transmitted.
B4, the IP fringe node transfers described GMPLS signaling to the L2C signaling;
B5, the IP fringe node is by another end points in L2C signaling and the described PBT of the mutual configuration of described access node tunnel;
The MAC Address of described another end points and access node or the virtual mac address of access node internal virtual AN are corresponding, and another end points in described configuration PBT tunnel promptly disposes the pairing PBT tunnel at access node or access node internal virtual AN of PBT tunnel label and transmits.
B6, IP fringe node return to the SP network equipment by the GMPLS signaling and add replying of PBT tunnel.
B7, the SP network equipment and IP fringe node carry out transfer of data by the tunnel of described interpolation.
B8, after transfer of data was finished, the SP network equipment sent deletion PBT tunneled requests to described IP fringe node; Described request can be passed through the GMPLS signaling bear.
B9, the end points in this side in described IP fringe node deletion PBT tunnel;
Described end points is corresponding with IP fringe node or IP fringe node internal virtual IP fringe node MAC Address; The end points in described deletion PBT tunnel is meant the transmit pairing PBT tunnel label of deletion at IP fringe node or IP fringe node internal virtual IP fringe node.
B10 is converted to the L2C signaling with the GMPLS signaling.
B11 is by the end points of L2C signaling deletion access node deletion PBT tunnel opposite side;
The MAC Address of described end points and access node or the virtual mac address of access node internal virtual AN are corresponding; The end points in described deletion PBT tunnel is meant the transmit pairing PBT tunnel label of deletion at access node or access node internal virtual AN.
B12, the IP fringe node returns replying of deletion PBT tunnel to the described SP network equipment.
Application examples two, a kind of provider backbone transmission PBT tunnel configuration method, flow process, comprising shown in 14 as figure:
C1, the virtual mac address of configuration virtual AN is understandable that, the virtual mac address of described configuration virtual AN can pass through the L2C protocol configuration.
C2, the virtual mac address of the interior virtual IP address fringe node of configuration virtual IP fringe node (as: BGN).
C3, the SP network equipment send the request of GMPLS signaling to described IP fringe node and add the PBT tunnel.
C4, the IP fringe node is converted to the L2C signaling with described GMPLS signaling;
C5, the IP fringe node disposes the PBT tunnel by the L2C signaling to the request of L2C agent equipment.
C6, described L2C agent equipment dispose an end points in PBT tunnel alternately by L2C signaling and described access node;
The MAC Address of a described end points and access node or the virtual mac address of access node internal virtual AN are corresponding, and an end points in described configuration PBT tunnel promptly disposes the pairing PBT tunnel at access node or access node internal virtual AN of PBT tunnel label and transmits.
C7, described L2C agent equipment dispose another end points in PBT tunnel alternately by L2C signaling and described IP fringe node;
Described another end points is corresponding with IP fringe node or IP fringe node internal virtual IP fringe node MAC Address, and another end points in described configuration PBT tunnel promptly disposes the pairing PBT tunnel at access node or access node internal virtual AN of PBT tunnel label and transmits.
C8, after tunnel configuration was finished, described L2C agent equipment returned the PBT tunnel configuration by the L2C signaling to described IP fringe node and replys.
C9, IP fringe node reply described PBT tunnel configuration and are converted to the GMPLS signaling and return to the SP network equipment.
C10 carries out transfer of data by described PBT tunnel between the SP network equipment and the access node.
C11, the SP network equipment sends GMPLS signaling request deletion PBT tunnel to described IP fringe node.
C12, the IP fringe node is converted to the L2C signaling with described GMPLS signaling;
C13, the IP fringe node is deleted the PBT tunnel by the L2C signaling to the request of L2C agent equipment.
C14, described L2C agent equipment delete an end points in PBT tunnel alternately by L2C signaling and described access node;
The MAC Address of a described end points and access node or the virtual mac address of access node internal virtual AN are corresponding, and the end points in described deletion PBT tunnel is meant the transmit pairing PBT tunnel label of deletion at access node or access node internal virtual AN.
C15, described L2C agent equipment delete another end points in PBT tunnel alternately by L2C signaling and described IP fringe node;
Described another end points is corresponding with IP fringe node or IP fringe node internal virtual IP fringe node MAC Address, and the end points in described deletion PBT tunnel is meant the transmit pairing PBT tunnel label of deletion at IP fringe node or IP fringe node internal virtual IP fringe node.
C16, after the tunnel deletion was finished, described L2C agent equipment returned the deletion of PBT tunnel by the L2C signaling to described IP fringe node and replys.
C17, IP fringe node reply described PBT tunnel deletion and are converted to the GMPLS signaling and return to the SP network equipment.
More than to tunnel configuration method provided by the present invention, virtual A N, virtual IP address fringe node and tunnel configuration system are described in detail, wherein, in the embodiment of the invention, by dynamically setting up the IP fringe node to the tunnel between the virtual A N, the tunnel is being offered the use of the SP network equipment, realize of the control of the SP network equipment to the port subregion, avoided in the prior art, the low problem of tunnel utilance that PBT tunnel static configuration is brought, and because the tunnel can dynamic assignment, then break down when the tunnel of configuration, SP can apply for again that the tunnel is its service, the communication of assurance normal.For one of ordinary skill in the art, according to the thought of the embodiment of the invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (15)
1. a provider backbone transmission PBT tunnel configuration method is characterized in that, comprising:
The virtual mac address of configuration virtual access node or the virtual mac address of virtual fringe node;
By layer two control L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the fringe node, or pairing the transmitting of PBT tunnel label between described virtual access node and the described virtual fringe node, or pairing the transmitting of PBT tunnel label between access node and the described virtual fringe node.
Described virtual access node and described fringe node be by described PBT tunnel communication, or described virtual access node and described virtual fringe node be by described PBT tunnel communication, or described access node and described virtual fringe node pass through described PBT tunnel communication.
2. PBT tunnel configuration method as claimed in claim 1 is characterized in that, the PBT tunnel label between described virtual access node and the fringe node comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node;
PBT tunnel label between described virtual access node and the described virtual fringe node comprises: the virtual mac address of the virtual mac address of described virtual access node, VLAN and described virtual fringe node;
PBT tunnel label between described access node and the described virtual fringe node comprises: the virtual mac address of the MAC Address of described access node, VLAN and described virtual fringe node.
3. the virtual access node of a provider backbone transmission PBT is characterized in that, comprising:
Memory cell is used to store the virtual mac address of pre-configured described virtual access node;
Port subregion interface processing unit is used for receiving or sending datagram from described virtual mac address corresponding port;
PBT tunnel configuration unit, be used for agreement by L2C, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the fringe node, described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node;
PBT tunnel processing unit is used for according to described PBT tunnel label, and the data message that described port subregion interface processing unit is received carries out PBT frame encapsulation process, and the data message after the encapsulation is transmitted by described PBT tunnel; Receive the PBT frame data message that transmits in the described PBT tunnel, carry out the decapsulation of PBT frame according to described PBT tunnel label and handle, the data message after the decapsulation is sent to described port subregion interface processing unit.
4. virtual access node as claimed in claim 3, it is characterized in that, described PBT tunnel configuration unit, also be used for by described L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the virtual fringe node, described PBT tunnel label comprises: the virtual mac address of the virtual mac address of described virtual access node, VLAN and described virtual fringe node.
5. as claim 3 or 4 described virtual access nodes, it is characterized in that, described PBT tunnel processing unit, also be used for according to described PBT tunnel label, judge whether the PBT frame data message that transmits in the PBT tunnel of described reception should be received by this virtual access node, handle if then carry out the decapsulation of PBT frame, the data message after the decapsulation is sent to described port subregion interface processing unit according to described PBT tunnel label.
6. the virtual fringe node of a provider backbone transmission PBT is characterized in that, comprising:
Memory cell is used to store the virtual mac address of pre-configured described virtual fringe node;
The L2C functional unit is used to receive the PBT tunnel configuration request that the SP network equipment sends, and sends the request of described PBT tunnel configuration to the L2C agent equipment;
PBT tunnel configuration unit, be used under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the access node, described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual fringe node, VLAN and described access node;
PBT tunnel processing unit is used to receive the data message from the SP network equipment, carries out PBT frame encapsulation process according to described PBT tunnel label, and the data message after the encapsulation is transmitted by described PBT tunnel; Receive the PBT frame data message that transmits in the described PBT tunnel, carry out the decapsulation of PBT frame according to described PBT tunnel label and handle, the data message after the decapsulation is sent to the described SP network equipment.
7. virtual fringe node as claimed in claim 6, it is characterized in that, described PBT tunnel configuration unit, also be used under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the virtual access node, described PBT tunnel label comprises: the virtual mac address of the virtual mac address of described virtual fringe node, VLAN and described virtual access node;
8. as claim 6 or 7 described virtual fringe nodes, it is characterized in that, described PBT tunnel processing unit, also be used for according to described PBT tunnel label, judge whether the PBT frame data message that transmits in the PBT tunnel of described reception should be received by this virtual fringe node, handle if then carry out the decapsulation of PBT frame, the data message after the decapsulation is sent to the described SP network equipment according to described PBT tunnel label.
9. as claim 6 or 7 described virtual fringe nodes, it is characterized in that described L2C functional unit specifically comprises:
Receiving element is used to receive the PBT tunnel configuration request that the SP network equipment sends by expansion multi protocol label exchange GMPLS signaling;
Converting unit is used for described GMPLS signaling is converted to the L2C signaling;
Transmitting element is used for sending the request of described PBT tunnel configuration to the L2C agent equipment by described L2C signaling.
10. a provider backbone transmission PBT tunnel configuration system is characterized in that, comprising: access node and fringe node;
Described access node comprises a plurality of virtual access nodes, and described virtual access node is used to store the virtual mac address of pre-configured described virtual access node; By the L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the described fringe node; Communicate by letter with described fringe node by described PBT tunnel;
Described fringe node is used for the agreement by L2C, disposes pairing the transmitting of PBT tunnel label between described fringe node and the described virtual access node; Communicate by letter with described virtual access node by described PBT tunnel.
11. PBT tunnel configuration as claimed in claim 10 system is characterized in that described PBT tunnel label comprises: the MAC Address of the virtual mac address of described virtual access node, VLAN and described fringe node.
12. a PBT tunnel configuration system is characterized in that, comprising: access node and fringe node;
Described fringe node comprises: L2C agent equipment and a plurality of virtual fringe node; Described virtual fringe node is used to store the virtual mac address of pre-configured described virtual fringe node; Receive the PBT tunnel configuration request that the SP network equipment sends, send the request of described PBT tunnel configuration to described L2C agent equipment; Under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the described access node; Communicate by letter with described access node by described PBT tunnel;
Described access node is used for by pairing the transmitting of PBT tunnel label between described access node of L2C protocol configuration and the described virtual fringe node; Communicate by letter with described virtual fringe node by described PBT tunnel.
13. PBT tunnel configuration as claimed in claim 12 system is characterized in that described PBT tunnel label comprises:
The MAC Address of the virtual mac address of described virtual fringe node, VLAN and described access node.
14. a PBT tunnel configuration system is characterized in that, comprising: access node and fringe node;
Described access node comprises a plurality of virtual access nodes, and described fringe node comprises: L2C agent equipment and a plurality of virtual fringe node;
Described virtual access node is used to store the virtual mac address of pre-configured described virtual access node; By the L2C agreement, dispose pairing the transmitting of PBT tunnel label between described virtual access node and the described virtual fringe node; Communicate by letter with described virtual fringe node by described PBT tunnel;
Described virtual fringe node is used to store the virtual mac address of pre-configured described virtual fringe node; Receive the PBT tunnel configuration request that the SP network equipment sends, send the request of described PBT tunnel configuration to described L2C agent equipment; Under described L2C agent equipment control, by pairing the transmitting of PBT tunnel label between described virtual fringe node of L2C protocol configuration and the described virtual access node; Communicate by letter with described virtual access node by described PBT tunnel.
15. PBT tunnel configuration as claimed in claim 14 system is characterized in that described PBT tunnel label comprises:
The virtual mac address of the virtual mac address of described virtual access node, VLAN and described virtual fringe node.
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