CN100461706C - Method for recovering sponsor media accessing control address and operation businesss edge apparatus - Google Patents
Method for recovering sponsor media accessing control address and operation businesss edge apparatus Download PDFInfo
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Abstract
After detecting link fault, current working PE launches MAC address recovery. Without need of running STP etc. protocol for monitoring topological change, the invention implements launching MAC address recovery in time so as to reduce loss of data packet.
Description
Technical field
The present invention relates to virtual private LAN service (VPLS) technical field, method and a kind of provider edge equipment (PE) that reclaim particularly a kind of initiation media interviews control (MAC) address.
Background technology
VPLS is that a kind of message encapsulation technology of passing through is carried user's Ethernet message on carrier network, and the technology of privately owned Ethernet connection is provided for the user.VPLS can adopt multiple message encapsulation technology, as: multiprotocol label switching (mpls), generic encapsulation agreement (GRE), Layer 2 Tunneling Protocol (L2TP) etc.Adopting MPLS message encapsulation technology with VPLS below is example, and the network architecture of VPLS is described.
As shown in Figure 1, distinguish for using the MPLS label to carry out Virtual Private Network (VPN), and use the VPLS basic network framework of MPLS label switched path (LSP) as the public network tunnel.In Fig. 1, three PE equipment are as provider edge equipment, for the website in three VPN provides access.The user data message according to transmitting the destination, encapsulates different VPN labels and public network tunnel label, and enters mpls domain after entering PE equipment by user side access device (CE) from local area network (LAN).After the forwarding of equipment on the process MPLS LSP, the user data message that has encapsulated the MPLS label has been come purpose PE equipment, purpose PE equipment to the user data message of receiving carry out with corresponding decapsulation of above-mentioned encapsulation and MAC address learning after, be forwarded to user site.
For preventing PE and other equipment that are connected, break down as the link between CE or other the PE, hinder the normal forwarding of data message, usually PE is carried out the redundancy backup configuration, as Fig. 2, Fig. 3 and shown in Figure 4.Fig. 2 is the double-ascending network framework, and as can be seen from the figure, server A, CE-A, PE-A and server B, two groups of equipment of CE-B, PE-B backup each other in this framework; Fig. 3 is a CE dual-homing networking framework, and wherein a CE in the local area network (LAN) is connected on two mutually redundant PE-A and the PE-B; Fig. 4 is the PE dual-homing networking, and wherein, a PE is connected on two mutually redundant PE:PE-A of converging and the PE-B.
Under the situation of Fig. 2, Fig. 3 and Fig. 4, in mutually redundant two PE, the PE of work at present is assumed to be PE-A and the equipment that is connected, and breaks down as the link between server A, CE or the PE, in the time of need enabling alternate device and be PE-B, if wait for that MAC Address is aging voluntarily, then can cause the lot of data message dropping, therefore need carry out MAC Address and reclaim, promptly delete the MAC Address of the link correspondence that lost efficacy among PE-A and other PE, to realize the quick convergence of MAC Address.
Under the situation of above-mentioned Fig. 3 and Fig. 4, PE-A exists two layers of link to be connected in local area network (LAN) with PE-B, can in normal operation, in the network architecture, move protocol monitor change in topology such as STP, the PE of work at present, after being assumed to be link that PE-A connects and breaking down, equipment PE-B perception change in topology to be started sends the recovery of MAC Address recovery message initiation MAC Address to PE-A and other far-end PE equipment.
But, under the situation of Fig. 2, because PE-A does not exist two layers of link to be connected in local area network (LAN) with PE-B, therefore can't move the agreement of monitoring topological variations such as STP, like this after the PE of current operation breaks down, backup PE can't the perception change in topology, reclaims thereby can't in time initiate MAC Address, has caused losing in a large number of user data message.
Summary of the invention
In view of this, the invention provides a kind of method and a kind of PE that media access control address reclaims that initiate, under the situation of the agreement that monitoring topological such as not moving STP changes, also can in time initiate the recovery of MAC Address, reduce losing of data message.
A kind of method that media access control address reclaims of initiating provided by the invention is applied in the VPLS network architecture that redundancy is provided with PE, and the described redundant PE that is provided with connects and composes mutually redundant link with different user side access device CE respectively, and this method comprises:
The link of the PE monitoring of work at present self user side that is connected among the described redundant PE that is provided with, after determining this link and breaking down, the media interviews control MAC Address tabulation that self connects each link correspondence of user side of storing according to self sends the MAC Address relevant information that needs recovery to adjacent PE.
Preferably, the PE of described work at present sends message and receives response by the chain road direction opposite equip. that self connects user side this link is monitored, if after sending message, do not receive response in the predefined time, then determine this link and break down.
Preferably, describedly after breaking down, this link further comprises: the MAC Address of this link correspondence in the PE deletion of described work at present self when determining.
This method also comprises: receive in the PE deletion self of the MAC Address relevant information that described needs reclaim and the corresponding MAC Address of described MAC Address relevant information.
Preferably, the PE that receives the described MAC Address relevant information that need to reclaim also follows level and cuts apart the described information that prerequisite will receive and send to other PE.
Preferably, the described MAC Address relevant information that needs to reclaim transmits between PE by VPLS MAC Address recovery message.
Described MAC Address relevant information can and transmit the virtual link (PW) of this relevant information for the MAC Address tabulation of: described link correspondence;
MAC Address corresponding with described MAC Address relevant information in the then described deletion self is:
In the self MAC address list of described PW correspondence, delete the MAC Address that comprises in the MAC Address tabulation of described link correspondence.
Described MAC Address relevant information also can for: transmit the PW of this relevant information and empty MAC Address tabulation;
MAC Address corresponding with described MAC Address relevant information in the then described deletion self is: delete all corresponding MAC Address of PW described in self.
The present invention also provides a kind of PE, be applied in the VPLS network, this PE and another backup PE are set up redundant each other, and this PE and this another one backup PE connect and compose mutually redundant link with different user side connection device CE respectively, and this PE comprises that link monitoring module and this PE comprise that link monitoring module, memory module and MAC Address reclaim initiation module; Wherein,
The link monitoring module is used to monitor the link that described PE is connected to user side, breaks down when determining this link, sends the MAC Address recovery command;
Memory module is used to store the MAC Address tabulation of each link correspondence of user side that this PE connects;
After MAC Address recovery initiation module was used to receive the described instruction of link monitoring module, the described MAC Address tabulation according to the memory module storage sent the MAC Address relevant information that needs recovery to adjacent PE.
Preferably, further comprise among the then described PE:
The MAC Address recycling module is used to receive the link monitoring module and sends described instruction, according to corresponding MAC Address among the described PE of this instruction deletion.
Preferably, described MAC Address recycling module is further used for receiving the MAC Address relevant information from the needs recovery of other PE, delete the MAC Address of this MAC Address relevant information correspondence, and/or the level of following is cut apart the MAC Address relevant information that needs that prerequisite will receive reclaim and is sent to other PE.
Among the PE by redundant setting among the present invention, the PE of work at present is after detecting the link that self connects and breaking down, the initiation MAC Address reclaims, thereby need not to move the agreement of monitoring topological variations such as STP, realized that also timely initiation MAC Address reclaims, thereby make MAC Address to reclaim fast, reduced losing of data message;
And then, tabulate by the MAC Address that transmits a PW and a sky among the present invention and initiate the recovery of MAC Address, having reduced to transmit in network needs the shared Internet resources of MAC Address relevant information that reclaim.
Description of drawings
Fig. 1 is the network architecture schematic diagram of VPLS;
Fig. 2 is the double-ascending network structural representation;
Fig. 3 is a CE dual-homing networking structural representation;
Fig. 4 is a PE dual-homing networking structural representation;
Fig. 5 initiates the flow chart of MAC Address recovery method specific embodiment for the present invention;
Fig. 6 is the structural representation of PE among the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Main thought of the present invention is, in the VPLS network architecture among the redundant PE that is provided with, the PE monitoring link that self connected of work at present after detecting the link that self connects and breaking down, is initiated MAC Address and reclaimed.
PE can send message and receive response this link is monitored by the chain road direction opposite equip. that self connected, if do not receive response in the predefined time after sending message, then determine this link and break down.Here the message of Fa Songing can be ping message, BSD message, OAM message etc.
Above-mentioned MAC Address relevant information can reclaim message by the VPLS MAC Address and send, and the MAC Address relevant information can be to need the MAC Address tabulation of reclaiming and transmit the virtual link (PW) that this VPLS MAC Address reclaims message; The PE that then receives this address relevant information deletes the MAC Address that comprises in the described MAC Address tabulation that needs to reclaim in the self MAC address list of this PW correspondence.Above-mentioned MAC Address relevant information also can be the MAC Address tabulation that transmits the PW and a sky of this MAC Address relevant information; Then receive all MAC Address of this PW correspondence in the deletion self.
Under the situation of the simple networking of PE, has full connection between each PE, initiating that MAC Address reclaims can be to send the VPLS MAC Address to adjacent PE to reclaim message, the PE that then receives this message only need delete in self with this message in the corresponding MAC Address of MAC Address relevant information.And under the situation of PE layering networking, because between each PE is not full syndeton, therefore receiving PE that the VPLS MAC Address reclaims message also need follow level and cut apart prerequisite and the VPLS MAC Address that receives is reclaimed message transmit, the message that is network side is not transmitted to network side, and only transmits to its subordinate PE.
The PE that above-mentioned initiation MAC Address reclaims can delete the MAC Address of faulty link correspondence in self, also can keep the MAC Address of faulty link correspondence in self.
Below to be applied in the double-ascending network with the present invention be that the present invention will be described in detail for example.Suppose that PE-A is the PE of work at present in Fig. 2, PE-B is backup PE, and the link between PE-A and the server A, and the link between PE-B and the server B are the redundant link that correspondence is provided with, and then as shown in Figure 5, present embodiment comprises the steps:
Whether step 501, PE-A regularly as per second, send the Ping message to server A, and receive the response of this Ping message, can reach with the link that detects between PE-A and the server A.
Here, if PE-A can normally receive the response message that server A is sent after sending the Ping message, then can reach between PE-A and the server A, promptly the link between PE-A and the server A does not break down; If PE-A is the predefined time after sending the Ping message, in 3 seconds, do not receive the response message that server A is returned, then unreachable between PE-A and the server A, promptly the link between PE-A and the server A breaks down.
Step 502, when PE-A detect and server A between link unreachable after, generation comprises that the VPLS MAC Address of the MAC Address relevant information that needs reclaim reclaims message, and all adjacent PE that message sends to the affiliated VSI of this unreachable link are reclaimed in this VPLSMAC address.
In this step, PE-A detect and server A between link unreachable after, can also delete the MAC Address of this link correspondence in self.
Because MAC Address is learnt from PW or two layers of place in circuit (AC), be that unit organizes also usually with PW or AC, the MAC Address that needs to reclaim is inaccessible AC or the pairing MAC Address of PW.In the present embodiment, at the situation of Fig. 2, the MAC Address that needs to reclaim is the pairing MAC Address of unreachable AC between PE-A and the server A.But owing to connect by PW between the PE, so the VPLS MAC Address reclaims the MAC Address relevant information that message is carried in this step, be i.e. comprise the MAC Address of above-mentioned unreachable AC correspondence in the MAC Address tabulation and transmit the sign that this VPLS MAC Address reclaims the PW of message.Suppose in Fig. 2, virtual connections in the middle of PE-A and the PE is PW1, virtual connections in the middle of PE-A and the PE-B is PW2, the MAC Address of unreachable AC correspondence comprises MACA1, MACA2, then PE-A is as shown in table 1 to the MAC Address tabulation that the VPLS MAC Address that PE sends reclaims in the message, and the MAC Address tabulation of PE-A in the VPLSMAC address recovery message that PE-B sends is as shown in table 2.
| MAC | PW |
| MACA1 | PW1 |
| MACA2 | PW1 |
Table 1
| MAC | PW |
| MACA1 | PW2 |
| MACA2 | PW2 |
Table 2
Reclaim the shared resource of message for reducing the VPLS MAC Address, also can reclaim the PW at the MAC Address place of carrying empty MAC Address tabulation in the message and needing to reclaim in the present embodiment in the VPLS MAC Address; As above hypothesis, then to reclaim the PW that carries in the message be PW1 to the PE-A VPLS MAC Address that sends to PE; And send to the PW that carries in the VPLS MAC Address recovery message of PE-B is PW2.
Above-mentioned PW can adopt different identification means according to the signaling protocol that is adopted among the VPLS, for example be under the situation of expanded signalling agreement with LDP, and under the Martini mode VPLS situation, can identify by Pwid FEC mode or Generalized PW ID FEC mode.
Step 503, receive the PE that VPLS MAC Address that PE-A sends reclaims message, reclaim the corresponding MAC Address of MAC Address relevant information deletion in message according to this VPLS MAC Address.
Here, be not sky if the VPLS MAC Address that PE receives reclaims the MAC Address tabulation that comprises in the message, then this PE parses MAC Address tabulation and PW wherein, the MAC Address of deletion correspondence in the MAC Address of learning under this PW then tabulation.Be sky if the VPLS MAC Address of PE reception reclaims the MAC Address tabulation that comprises in the message, then PE deletes all MAC Address of learning according to the PW that parses in this message under this PW.
In the full networking that connects of PE, the process above-mentioned steps has just been finished the recovery of MAC Address, and under Fig. 2 situation, PE-B and PE go up among the corresponding VSI deleted about the MAC Address of server A.But, receive the VPLSMAC address and reclaim the PE of message and need that also the VPLS MAC Address that receives is reclaimed message and follow level and cut apart prerequisite and transmit for being not in the networking of full connection between PE layering networking or other each PE.For example, PE in Fig. 2 is for converging PE, it also exists subordinate PE:PE-C and PE-D down, after then PE receives and reclaims message from the VPLS MAC Address of PE-A, in deletion self the corresponding MAC Address, also send corresponding VPLSMAC address recovery message to PE-C and PE-D, then PE-C and PE-D reclaim corresponding MAC Address in the message deletion self according to the VPLS MAC Address of receiving.Similarly, if also there are subordinate PE in PE-C or PE-D, then also carry out with above-mentioned and converge the identical processing of PE.
After the MAC Address recovery is finished, the message of user access server A will send to server B in the mode of broadcasting, realized the quick response of server B, the PE equipment of learning the MAC Address of server B after response just can send datagram to server B by the mode of clean culture.
The structure of above-mentioned PE comprises that link monitoring module and MAC Address reclaim initiation module as shown in Figure 6; Wherein, the link monitoring module is used to monitor the link that this PE connects, and after detecting the link that self connects and breaking down, reclaims initiation module to MAC Address and sends the MAC Address recovery command; This module is specifically by sending the ping message, and according to the reception condition of ping message response the link that this PE connected monitored.In addition, the information that comprises the link that breaks down in the MAC Address recovery command.
MAC Address reclaims the MAC Address recovery command that initiation module is used to receive the link monitoring module, and initiates MAC Address and reclaim.Here initiating the MAC Address recovery is meant, MAC Address reclaims the information of initiation module according to the link that breaks down that comprises in the MAC Address recovery command that receives, send the MAC Address relevant information that needs to reclaim to adjacent PE and initiate the MAC Address recovery, the MAC Address relevant information that needs to reclaim can reclaim the message transmission by the VPLS MAC Address, and the specific implementation of this message is referring to above-mentioned description to step 502.
Further can also comprise among the above-mentioned PE: the MAC Address recycling module, be used to receive the MAC Address recovery command that the link monitoring module is sent, among the deletion PE self with this instruction in the corresponding MAC Address of link that breaks down.In addition, the MAC Address recycling module also can receive the MAC Address relevant information from the needs recovery of other PE, deletes the MAC Address of this MAC Address relevant information correspondence.This MAC Address recycling module can also be followed level and cuts apart prerequisite the MAC Address relevant information that the described needs that receive reclaim is sent to other PE.
More than be explanation, in concrete implementation process, can carry out suitable improvement, to adapt to the concrete needs of concrete condition method of the present invention to the specific embodiment of the invention.Therefore be appreciated that according to the specific embodiment of the present invention just to play an exemplary role, not in order to restriction protection scope of the present invention.
Claims (11)
1. initiate the method that media access control address reclaims for one kind, be applied in the virtual private LAN service VPLS network architecture that redundancy is provided with provider edge equipment PE, it is characterized in that, the described redundant PE that is provided with connects and composes mutually redundant link with different user side access device CE respectively, and this method comprises:
The link of the PE monitoring of work at present self user side that is connected among the described redundant PE that is provided with, after determining this link and breaking down, the media interviews control MAC Address tabulation that self connects each link correspondence of user side of storing according to self sends the MAC Address relevant information that needs recovery to adjacent PE.
2. method according to claim 1 is characterized in that, the PE of described work at present sends message by the described chain road direction opposite equip. that self connects user side, and the reception response is monitored this link; If after sending message, do not receive response in the predefined time, then determine this link and break down.
3. method according to claim 1 is characterized in that, describedly further comprises after this link breaks down when determining: the MAC Address of this link correspondence in the PE deletion of described work at present self.
4. according to arbitrary described method in the claim 1 to 3, it is characterized in that this method also comprises: receive the PE of the MAC Address relevant information that described needs reclaim, delete in self and the corresponding MAC Address of described MAC Address relevant information.
5. method according to claim 4 is characterized in that, receives the PE of the described MAC Address relevant information that need to reclaim, and the level of also following is cut apart the described information that prerequisite will receive and sent to other PE.
6. method according to claim 4 is characterized in that, the described MAC Address relevant information that needs to reclaim transmits between PE by VPLS MAC Address recovery message.
7. method according to claim 4 is characterized in that, described MAC Address relevant information is: the MAC Address of described link correspondence tabulation and transmit the virtual link PW of this relevant information;
MAC Address corresponding with described MAC Address relevant information in the then described deletion self is:
In the self MAC address list of described PW correspondence, delete the MAC Address that comprises in the MAC Address tabulation of described link correspondence.
8. method according to claim 4 is characterized in that, described MAC Address relevant information is: transmit the PW of this relevant information and empty MAC Address tabulation;
MAC Address corresponding with described MAC Address relevant information in the then described deletion self is: delete all corresponding MAC Address of PW described in self.
9. provider edge equipment PE, it is characterized in that, be applied in the VPLS network, this PE and another backup PE are set up redundant each other, and this PE and this another one backup PE connect and compose mutually redundant link with different user side connection device CE respectively, and this PE comprises that link monitoring module, memory module and MAC Address reclaim initiation module; Wherein,
The link monitoring module is used to monitor the link that described PE is connected to user side, breaks down when determining this link, sends the MAC Address recovery command;
Memory module is used to store the MAC Address tabulation of each link correspondence of user side that this PE connects;
After MAC Address recovery initiation module was used to receive the described instruction of link monitoring module, the described MAC Address tabulation according to the memory module storage sent the MAC Address relevant information that needs recovery to adjacent PE.
10. PE according to claim 9 is characterized in that, further comprises among the then described PE:
The MAC Address recycling module is used to receive the described instruction that the link monitoring module is sent, according to corresponding MAC Address among the described PE of this instruction deletion.
11. PE according to claim 10, it is characterized in that, described MAC Address recycling module is further used for receiving the MAC Address relevant information from the needs recovery of other PE, delete the MAC Address of this MAC Address relevant information correspondence, and/or the level of following is cut apart the MAC Address relevant information that needs that prerequisite will receive reclaim and is sent to other PE.
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| CNB2006101606461A CN100461706C (en) | 2006-11-29 | 2006-11-29 | Method for recovering sponsor media accessing control address and operation businesss edge apparatus |
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| CNB2006101606461A CN100461706C (en) | 2006-11-29 | 2006-11-29 | Method for recovering sponsor media accessing control address and operation businesss edge apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104954259A (en) * | 2015-04-28 | 2015-09-30 | 瑞斯康达科技发展股份有限公司 | PTN (packet transport network) service convergence realization method and PE (provider edge router) |
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| CN101621550B (en) * | 2009-08-14 | 2012-12-12 | 杭州华三通信技术有限公司 | Method and device for recycling MAC address in VPLS |
| CN102088415B (en) * | 2011-03-14 | 2014-06-25 | 杭州华三通信技术有限公司 | Method and device for MAC (media access control) address withdrawal |
| CN102185712B (en) * | 2011-04-29 | 2015-10-21 | 中兴通讯股份有限公司 | The reverse method of VPLS network and ethernet ring network and device |
| CN102546855B (en) * | 2011-11-28 | 2017-10-17 | 中兴通讯股份有限公司 | MAC Address recovery method and PE equipment in VPLS network |
| CN102857401B (en) * | 2012-09-27 | 2015-05-20 | 杭州华三通信技术有限公司 | Method for activating VLAN (Virtual Local Area Network) negotiation and ED (edge device) |
| CN104253756B (en) * | 2013-06-27 | 2018-10-26 | 新华三技术有限公司 | A kind of LAV switching methods and ED |
| CN105681224A (en) * | 2014-11-20 | 2016-06-15 | 中兴通讯股份有限公司 | User access method and device |
| CN107819622B (en) * | 2017-11-06 | 2019-08-16 | 中国联合网络通信集团有限公司 | MAC Address management method and device |
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