CN104253756A - LAV (local active VLAN) switching method and ED (edge device) - Google Patents
LAV (local active VLAN) switching method and ED (edge device) Download PDFInfo
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Abstract
The invention discloses an LAV (local active VLAN) switching method and an ED (edge device). The LAV switching method is applied to an EVI (Ethernet virtualization interconnection) system, the EVI system comprises a local site and a remote site, the local site is accessed to the EVI system through a source ED and a target ED, and the remote site is accessed into the EVI system through a remote ED. The LAV switching method includes: the source ED judges whether switching LAV to the target ED is needed or not; if yes, the source ED informs the remote ED of deleting an MAC (media access control) table item corresponding to the LAV and sends a first message with a Local MAC table item corresponding to the LAV to the target ED so as to enable the target ED to send the Local MAC table item to the remote ED. By the LAV switching method and the ED, the source ED is enabled to send the Local MAC table item corresponding to the LAV to the target ED when determining that the LAV is switched to the target ED, and the target ED floods the Local MAC table item to the remote ED, so that LAV flow convergence rate can be increased effectively, flow break period is shortened, and continuity and reliability of VLAN (virtual local area network) service are improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of LAV changing method and ED.
Background technology
Burning hot along with cloud computing concept, data center network technology has welcome once violent change, a large amount of new technical standards occurred in recent years as gush, and EVI(Ethernet is virtual interconnected, Ethernet Virtualization Interconnection) technology also produces thereupon.EVI technology, mainly based on existing service provider network and enterprise network, provides two layers of interconnecting function flexibly to the physical site of dispersion.As shown in Figure 1, be the system architecture schematic diagram of EVI network.
In EVI technology, ED(Edge Device in each website, edge device) by ENDP(EVI Neighbor Discovery Protocol, EVI Neighbor Discovery Protocol) automatically find other websites, ED in ED in each website and other websites sets up EVI virtual connections (VLink), each ED is by EVI-ISIS(Intermediate System-to-Intermediate System, Intermediate System-to-Intermediate System) agreement notices the MAC(Media Access Control of main frame in website belonging to self and equipment in EVI virtual connections, media get involved key-course) can information be reached.After EVI network system completes deployment, EVI fictionalizes a large double layer network, and strange land main frame Host A, Host B, Host C will in same radio networks.When website is by edge device core network access, in order to realize high reliability, preventing the Single Point of Faliure of equipment in network, usually adopting many attributable systems core network access of two edge of table equipment, also referred to as dual-homed access.
As shown in Figure 2, for a kind of system architecture schematic diagram of EVI dual-homing networking, ED1 and ED2 is the dual-homed access device of website 1, neighborhood in EVI ISIS website is set up between ED1 and ED2, activate Vlan(Virtual Local Area Network, VLAN) 1 appointment to turn originator be ED1, it is ED2 that the appointment of activation Vlan2 turns originator, wherein, in this locality, namely the Vlan activated in website is also referred to as LAV(Local Active VLAN, local activation VLAN), therefore, above-mentioned Vlan1 in website 1 also can be described as LAV1, Vlan2 also can be described as LAV2.Link failure between ED1 and descending convergence switch, time in LAV1 without active descending two layers of port, according to existing EVI-ISIS agreement, ED1 does not carry out any process, and now VLAN1 Business Stream cannot normally forward.
Existingly trigger LAV re-optimization by user behavior, namely redistribute the website that Vlan activates, force Vlan1 to be assigned on ED2, so that Vlan1 is switched to ED2 by ED1, realize the re-optimization of LAV.But, in LAV re-optimization process, ED1 is needed to delete all MAC address entries of LAV, and ED2 normally guarantee LAV re-optimization according to the aging study mechanism of MAC in existing EVI-ISIS agreement and far-end MAC synchronization mechanism after whole net MAC synchronous, this just makes whole net MAC synchronous comparatively slow, re-optimization Vlan, and namely the flow convergence rate of Vlan1 is slower, the flow interrupt time is longer, traffic affecting continuity.
Summary of the invention
Problem to be solved by this invention how to avoid existing when LAV re-optimization, and flow convergence rate is comparatively slow and problem that flow interrupt time of causing is longer.
For solving the problems of the technologies described above, the invention provides a kind of LAV changing method, be applied in the virtual interconnected EVI system of Ethernet, described EVI system comprises site-local and remote station, described site-local accesses described EVI system by source edge device ED and object ED, described remote station accesses described EVI system by far-end ED, and described method comprises:
Described source ED judges whether to need local activation VLAN LAV to switch to described object ED;
When judged result is for being, described source ED notifies that described far-end ED deletes the media corresponding with described LAV and gets involved key-course MAC address entries, and the first message carrying the local Local MAC address entries corresponding with described LAV is sent to described object ED, send described Local MAC address entries to make described object ED to described far-end ED;
Wherein, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores.
Preferably, described source ED judges whether to need LAV to switch to described object ED, specifically comprises:
When described source ED detects descending two layers of port that in described LAV, nothing is active, described source ED judges to need described LAV to switch to described object ED; Or
Described source ED determines described LAV re-optimization, and when being assigned to described object ED, judges to need described LAV to be switched to described object ED.
Preferably, when described source ED is the ED of non-designated edge device DED, when described source ED detects descending two layers of port that in described LAV, nothing is active, described ED judges to need described LAV to switch to described object ED, specifically comprises:
Described source ED sends request message to described DED, and described request message is for will described source ED need the LAV switched inform described DED;
When described source ED receives the LAV assignment message of described DED transmission, and when described LAV is distributed to described object ED, described LAV is switched to described object ED according to described LAV assignment message by described source ED.
Preferably, described to after described object ED sends and carries the first message of the Local MAC address entries corresponding with described LAV, described method also comprises:
Retain the local remote equipment MAC address entries corresponding with described LAV stored, to ensure that uplink traffic is not interrupted in the process being switched to described object ED at described LAV.
Preferably, described method also comprises:
Setting ageing time, so that in described ageing time then, deletes described remote equipment MAC address entries;
Wherein, described ageing time is that described source ED sets according to the ageing time preset, or be the ageing time of carrying in the second message that described object ED sends, or the minimum ageing time in the ageing time of carrying in the second message sent for the ageing time preset and described object ED.
The embodiment of the present invention additionally provides a kind of LAV changing method, be applied in the virtual interconnected EVI system of Ethernet, described EVI system comprises site-local and remote station, described site-local accesses described EVI system by source ED and object ED, described remote station accesses described EVI system by far-end ED, and described method comprises:
Described object ED receives the first message that described source ED sends, obtain and store the Local MAC address entries corresponding with the LAV switched carried in described first message, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores;
Described object ED to flood described Local MAC address entries to described far-end ED, to make described far-end ED learn the MAC Address of described local device, and carries out traffic transport according to the MAC Address of described local device.
Preferably, described method also comprises:
Setting ageing time, so that in described ageing time then, according to the dynamic MAC list item that described object ED stores, non-existent MAC Address in described dynamic MAC list item is deleted from described Local MAC address entries, and use the Local MAC address entries that the synchronous described far-end ED of Local MAC address entries synchronously stores, wherein, the MAC Address of all terminal equipments that described object ED can reach is stored in described dynamic MAC list item;
Wherein, described ageing time is that described object ED sets according to the ageing time preset, or be the ageing time of carrying in the first message that the ED in described source sends, or the minimum ageing time in the ageing time of carrying in the first message sent for described default ageing time and described source ED.
Preferably, after described object ED receives the first message of source ED transmission, described method also comprises:
Described object ED sends the 3rd message by self active downstream interface to two layers of convergence switch, the source MAC of described 3rd message is the remote equipment MAC Address corresponding with the LAV of described switching that described object ED learns, initiatively to refresh the MAC address entries that described two layers of convergence switch store, uplink traffic user sent to make described two layers of convergence switch is drawn to described object ED by described source ED.
The embodiment of the present invention additionally provides a kind of ED, comprising:
Judge module, needs LAV to switch to object ED for judging whether;
Transceiver module, for when the judged result of described judge module is for being, notice far-end ED deletes the MAC address entries corresponding with described LAV, and the first message carrying the Local MAC address entries corresponding with described LAV is sent to described object ED, send described Local MAC address entries to make described object ED to described far-end ED; Wherein, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores.
Preferably, described judge module, specifically for when descending two layers of port that in described LAV, nothing is active being detected, judges to need described LAV to switch to described object ED; Or determine described LAV re-optimization specifically for working as, and when being assigned to described object ED, judge to need described LAV to be switched to described object ED.
Preferably, when described ED is the ED of non-designated edge device DED, described transceiver module, also for sending request message to described DED, described request message is for will described source ED need the LAV switched inform described DED; And also for receiving the LAV assignment message that described DED sends;
Described judge module, specifically for receiving the LAV assignment message that described DED sends when described transceiver module, and when described LAV is distributed to described object ED, switches to described object ED according to described LAV assignment message by described LAV.
Preferably, described ED also comprises:
Processing module, for after described transceiver module carries the first message of the Local MAC address entries corresponding with described LAV to described object ED transmission, retain the local remote equipment MAC address entries corresponding with described LAV stored, to ensure that uplink traffic is not interrupted in the process being switched to described object ED at described LAV.
Preferably, described ED also comprises:
Timing processing module, for setting ageing time, so that in described ageing time then, deletes described remote equipment MAC address entries;
Wherein, described ageing time is that described source ED sets according to the ageing time preset, or be the ageing time of carrying in the second message that described object ED sends, or the minimum ageing time in the ageing time of carrying in the second message sent for the ageing time preset and described object ED.
The embodiment of the present invention additionally provides a kind of ED, comprising:
Receiving processing module, for receiving the first message that source ED sends, obtain and store the Local MAC address entries corresponding with the LAV switched carried in described first message, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores;
Flood module, to flood described Local MAC address entries, to make described far-end ED learn the MAC Address of described local device, and carry out traffic transport according to the MAC Address of described local device for distally ED.
Preferably, described ED also comprises:
Timing processing module, for setting ageing time, so that in described ageing time then, according to the dynamic MAC list item that described object ED stores, non-existent MAC Address in described dynamic MAC list item is deleted from described Local MAC address entries, and use the Local MAC address entries that the synchronous described far-end ED of Local MAC address entries synchronously stores, wherein, in described dynamic MAC list item, store the MAC Address of all terminal equipments that described object ED can reach;
Wherein, described ageing time is that described object ED sets according to the ageing time preset, or be the ageing time of carrying in the first message that the ED in described source sends, or the minimum ageing time in the ageing time of carrying in the first message sent for described default ageing time and described source ED.
Preferably, described ED also comprises:
Message sending module, for after the first message receiving described source ED transmission, the downstream interface active by described object ED sends the 3rd message to two layers of convergence switch, the source MAC of described 3rd message is the remote equipment MAC Address corresponding with the LAV of described switching that described object ED learns, initiatively to refresh the MAC address entries that described two layers of convergence switch store, uplink traffic user sent to make described two layers of convergence switch is drawn to described object ED by described source ED.
By adopting embodiment of the present invention technical scheme, source ED can be made when determining that LAV is switched to object ED, initiatively the Local MAC address entries corresponding with this LAV that self stores is sent to object ED, make object ED by this Local MAC address entries that floods to far-end ED, improve the whole network MAC no-load speed, thus effectively improve LAV flow convergence rate, reduce the flow interrupt time, improve continuity and the reliability of Vlan business.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of EVI network;
Fig. 2 is a kind of system architecture schematic diagram of EVI dual-homing networking;
Fig. 3 is the schematic flow sheet of the LAV changing method that the embodiment of the present invention one provides;
Fig. 4 is the schematic flow sheet of the LAV changing method that the embodiment of the present invention two provides;
The schematic flow sheet of the LAV changing method that Fig. 5 provides for the embodiment of the present invention three;
The schematic flow sheet of the LAV changing method that Fig. 6 provides for the embodiment of the present invention four;
The schematic flow sheet of ageing time is consulted in the LAV changing method that Fig. 7 provides for the embodiment of the present invention five;
The schematic flow sheet of the LAV changing method that Fig. 8 provides for the embodiment of the present invention six;
The format chart of the TLV that Fig. 9 provides for the embodiment of the present invention;
The schematic diagram of Flags field in the TLV form that Figure 10 provides for the embodiment of the present invention;
The schematic diagram of Transfer VLAN id field in the TLV form that Figure 11 provides for the embodiment of the present invention;
Figure 12 is the structural representation of a kind of ED that the embodiment of the present invention seven provides;
The structural representation of a kind of ED that Figure 13 provides for the embodiment of the present invention eight;
Figure 14 is the structural representation of a kind of ED that the embodiment of the present invention nine provides;
The structural representation of a kind of ED that Figure 15 provides for the embodiment of the present invention ten.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, be clearly and completely described the technical scheme in the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 3 is the schematic flow sheet of the LAV changing method that the embodiment of the present invention one provides.The present embodiment LAV changing method can apply dual-homed EVI system as shown in Figure 2, this dual-homed EVI system can comprise site-local and remote station, site-local accesses EVI system by source ED and object ED, remote station accesses described EVI system by far-end ED, when the LAV on the ED of source needs to be switched to object ED, LAV switching can be carried out according to the present embodiment method, particularly, as shown in Figure 3, the present embodiment LAV changing method can comprise the steps:
Step 101, source ED judge whether to need LAV to switch to object ED;
Step 102, when judged result is for being, source ED notifies that far-end ED deletes the MAC address entries corresponding with LAV, and sends the first message carrying the Local MAC address entries corresponding with LAV to object ED, to make object ED distally ED transmission Local MAC address entries;
Wherein, Local MAC address entries is the MAC Address of the local device corresponding with LAV that source ED stores.
In the present embodiment, when source ED judges to need the Vlan to access self, namely when LAV is switched to object ED, source ED can automatically by Local MAC address entries corresponding for this LAV self stored, be sent to object ED, make object ED can be flooded to far-end ED based on this Local MAC address entries, effectively can improve the rapidity that whole net MAC is synchronous, avoid the existing synchronous problem causing LAV convergence data slower comparatively slowly of MAC brought according to the aging study mechanism of the MAC in EVI-ISIS agreement and far-end MAC synchronization mechanism, effectively can reduce LAV and switch the flow interrupt time caused.
In the present embodiment, source ED specifically can according to designated edge equipment DED, in LAV re-optimization process, the re-optimization that such as user behavior causes, or other situation, such as, link failure on source ED and the re-optimization caused, when DED specifies Vlan corresponding to LAV to be switched to object ED, by according to above-mentioned steps, the Local MAC address entries of LAV on the ED of source initiatively can be sent to object ED, object ED can be flooded, to improve whole net MAC no-load speed to far-end ED based on this Local MAC address entries.Wherein, described DED forms neighborhood by EVI IS-IS hello packet mutual in website between ED, mutually notice the expansion VLAN of each self-configuring afterwards, and elect the ED of, i.e. DED(Designated Edge Device, designated edge equipment), DED each ED that can be in website distributes the active vlan needing to share, i.e. the concrete election process of LAV, DED, and the distribution method of DED to LAV is same as the prior art or similar, does not repeat them here.
To sum up, in the present embodiment technical scheme, source ED is when determining that LAV is switched to object ED, initiatively the Local MAC address entries corresponding with this LAV that self stores can be sent to object ED, make object ED by this Local MAC address entries that floods to far-end ED, improve the whole network MAC no-load speed, effectively can improve LAV flow convergence rate, reduce the flow interrupt time, improve continuity and the reliability of Vlan business.
It will be appreciated by those skilled in the art that, in the present embodiment, described source ED and object ED is only an appellation under a kind of scene when a LAV switches, in some cases, ED for the purpose of source ED also may become, object ED also may become source ED, such as, in the scene switched at another LAV; Simultaneously, in EVI system described in the present embodiment, only having two ED to a website is that example is described, in practical application, same website also can have the ED of more than three or three, and now, above-mentioned source ED can be one of them ED, object ED can be wherein another, is not particularly limited this embodiment of the present invention.In the present embodiment, unless otherwise noted, be all be described to have two ED in a website.
Fig. 4 is the schematic flow sheet of the LAV changing method that the embodiment of the present invention two provides.The present embodiment LAV changing method can be applicable to the dual-homed EVI system shown in Fig. 2, this dual-homed EVI system can comprise site-local and remote station, site-local accesses EVI system by source ED and object ED, remote station accesses described EVI system by far-end ED, when the LAV on the ED of source needs to be switched to object ED, object ED can receive according to the present embodiment method the message that source ED sends and to go forward side by side row relax, realize LAV to switch, particularly, as shown in Figure 4, the present embodiment LAV changing method can comprise the steps:
Step 201, object ED receives the first message that source ED sends, and obtain and store the Local MAC address entries corresponding with the LAV switched carried in the first message, wherein, Local MAC address entries is the MAC Address of the local device corresponding with LAV that source ED stores;
Step 202, object ED distally ED floods Local MAC address entries, with the MAC Address making far-end ED learn local device, and carries out traffic transport according to the MAC Address of local device.
The present embodiment method can process the first message that source ED sends based on above-described embodiment one method, together with above-described embodiment one method, can realize the switching of the LAV in same website.
In the present embodiment, after object ED gets source ED transmission Local MAC address entries, this Local MAC address entries can be flooded to far-end ED, make far-end ED can obtain corresponding MAC address entries fast, when study is switched to object ED to LAV, corresponding to the Local MAC address entries of LAV, thus traffic transport can be carried out based on this Local MAC address entries, effectively can improve the rapidity that whole net MAC is synchronous, avoid the existing synchronous problem causing LAV convergence data slower comparatively slowly of MAC brought according to the aging study mechanism of the MAC in EVI-ISIS agreement and far-end MAC synchronization mechanism, effectively can reduce LAV and switch the flow interrupt time caused.
The schematic flow sheet of the LAV changing method that Fig. 5 provides for the embodiment of the present invention three.In the present embodiment, when source ED needs to switch LAV, can be mutual with object ED and far-end ED, realize the switching of LAV, particularly, as shown in Figure 5, the present embodiment LAV changing method can comprise the following steps:
Step 301, source ED judges whether to need LAV to switch to object ED, when judged result is for being, performs step 302, otherwise process ends.
Preferably, source ED can judge whether to need LAV to switch to object ED according to following strategy:
(1), when source ED detects descending two layers of port that in LAV, nothing is active, source ED judges to need LAV to switch to object ED; Or
(2) source ED determines LAV re-optimization, and when being assigned to object ED, judges to need LAV to be switched to object ED.
In practical application, in EVI system, ED is provided with the priority of LAV, make ED can judge that whether self turn originator as the appointment of LAV according to priority, for the system configuration shown in Fig. 2, if ED1 is high for the priority of LAV1, priority for LAV2 is low, ED2 is low for the priority of LAV1, priority for LAV2 is high, then ED1 is that the appointment of LAV1 turns originator, and ED2 is that the appointment of LAV2 turns originator, certain priority by concrete numeric representation, can also not repeat them here.
For strategy (1), when ED1 judges that self does not exist active downlink port, the priority of LAV1 is set to low by ED1, and judge to need LAV1 to migrate to ED2, wherein, ED1 can know whether there is active downlink port according to the port status in the port list item of self maintained, same as the prior art herein, does not repeat them here.For strategy (2), the LAV caused for user behavior switches, concrete, and when the LAV accessed under ED1 is deleted (LAV1 in Fig. 2), ED1 judges to need LAV1 to migrate to ED2.When the appointment of the LAV1 under ED1 forwards (appointment of such as LAV1 turns originator and is modified to ED2 by ED1) when ED is modified, ED1 judges to need LAV1 to migrate to ED2.
It will be appreciated by those skilled in the art that, when the website of EVI system only has two ED, when source ED judges downlink failure, can determine to switch to object ED by from LAV with it, and when there is the ED of more than three or three for a website, when source ED judges downlink failure, determine which ED the object ED that LAV switches is on earth by DED.Equally, at user behavior, such as, when the priority etc. revising Vlan causes Vlan re-optimization, be also by DED to determine the ED that the Vlan of re-optimization specifies usually, now, also can carry out the switching of LAV according to the present embodiment step.
Step 302, source ED notifies that far-end ED deletes the MAC address entries corresponding with LAV, and sends the first message carrying the Local MAC address entries corresponding with LAV to object ED.
Preferably, source ED temporarily can also retain the local remote equipment MAC address entries corresponding with the LAV switched stored, to ensure that in handoff procedure uplink traffic is not interrupted.
Concrete, in embodiments of the present invention, for the system architecture shown in Fig. 2, the far-end ED MAC Address that to be ED3, Local MAC address entries be with the LAV1 counterpart terminal 1 switched and terminal 2.
It should be noted that, if there is a large amount of Local MAC address entries in the LAV that switch corresponding with source ED, then a message possibly cannot carry all Local MAC address entries, now, can by message fragment, and by the flag instruction position of fragment message in former message in message, its specific implementation will be described in detail later.
Preferably, also can be provided with ageing time in the ED of source, after transmission first message, source ED starts timer, when arriving ageing time, deletes remote equipment MAC address entries.Concrete, this ageing time can set according to the ageing time preset for source ED, or for the purpose of the ageing time of carrying in the second message of sending of ED, or be the minimum ageing time in the ageing time of carrying in the second message of sending according to the ageing time preset and object ED.
In this step, the MAC address entries corresponding with the LAV switched is deleted by notice far-end ED, far-end ED can be avoided to continue message to be sent on the ED of source, simultaneously, when source ED judges to need to switch LAV, do not delete the local remote equipment MAC address entries corresponding with the LAV switched stored immediately, but temporarily retain this remote equipment MAC address entries, to ensure that source ED can continue to forward uplink traffic, flow is avoided to interrupt, preferably, the remote equipment MAC address entries corresponding with the LAV switched can be labeled as temporary address, so that delete this temporary address afterwards.
Step 303, object ED receives the first message that source ED sends, and obtains and stores the Local MAC address entries corresponding with LAV that is that switch that be that carry in the first message.
Step 304, object ED is the Local MAC address entries that sends of ED transmission source ED distally, to notify that far-end ED is according to Local MAC address entries and the interface receiving Local MAC address entries, converting downlink data.
Concrete, far-end ED according to the EVI tunnel interface receiving Local MAC address entries, can determine that by follow-up traffic forwarding to which platform ED, its specific implementation is same as the prior art or similar, does not repeat them here.
Preferably, ageing time can be provided with in object ED, so that in ageing time then, according to the dynamic MAC list item that object ED stores, MAC Address non-existent in dynamic MAC list item is deleted from Local MAC address entries, and use the Local MAC address entries that the synchronous described far-end ED of Local MAC address entries synchronously stores, wherein, the MAC Address of all terminal equipments that object ED can reach is stored in dynamic MAC list item, MAC Address in this dynamic MAC list item can by object ED dynamic learning upgrading in the flow processs such as message interaction, this process is same as the prior art, repeat no more, wherein, ageing time can for the purpose of ED according to preset ageing time set, or be the ageing time of carrying in the first message that the ED in source sends, or the minimum ageing time in the first message sent for the ageing time preset and source ED in the ageing time of carrying.
Particularly, object ED self stores MAC address entries, wherein store in all expansion VLAN, the MAC Address of the client that object ED can reach, object ED is after determining ageing time, local timer can also be started, and after local timer arrives ageing time, according to the MAC Address in MAC address entries, synchronous Local MAC address entries, MAC Address non-existent in MAC address entries is deleted from Local MAC address entries, the Local MAC address entries after synchronous is sent to far-end ED, and deletes Local MAC address entries.
Step 305, object ED sends the 3rd message by self active downstream interface, source MAC in 3rd message is the remote equipment MAC Address corresponding with LAV that is that switch that be that learn with object ED, initiatively to refresh the MAC address entries that two layers of convergence switch store, uplink traffic user sent to make two layers of convergence switch is drawn to described object ED by described source ED.
Concrete, according to existing protocol regulation, after the Local MAC address entries that the LAV that object ED learns to switch is corresponding, can carry out alternately with far-end ED, with the remote equipment MAC Address that study is corresponding with the LAV switched, its specific implementation is same as the prior art or similar, does not repeat them here.In embodiments of the present invention, if the LAV switched is to there being multiple remote equipment, object ED can send multiple 3rd message, one by one the MAC Address of all remote equipments is informed two layers of convergence switch.
By to two layers of convergence switch transmission source MAC Address being the 3rd message of remote equipment MAC Address, two layers of convergence switch can be made according to the Ethernet interface receiving the 3rd message, refresh the MAC address entries self stored, and then the uplink traffic that the local device corresponding with the LAV switched sends is forwarded on ED2 by two layers of convergence switch.
By adopting the embodiment of the present invention, source ED can be made when determining that LAV is switched to object ED, initiatively the Local MAC address entries corresponding with this LAV that self stores is sent to object ED, make object ED by this Local MAC address entries that floods to far-end ED, improve the whole network MAC no-load speed, thus effectively improve LAV flow convergence rate, reduce the flow interrupt time, improve continuity and the reliability of Vlan business.
In practical application; for EVI system, an ED usually can be elected in same website as DED, to realize the distribution of Vlan; like this; LAV in website switches, and is all could determine to need to carry out LAV switching after DED distributes; and the object ED that needs are switched to; when will be non-DED with source ED below, and during downlink failure corresponding to LAV on the ED of source, how to carry out LAV and switch and be described.
The schematic flow sheet of the LAV changing method that Fig. 6 provides for the embodiment of the present invention four.In the present embodiment, the source ED in EVI system is non-DED, object ED is DED, when the downlink failure that the LAV that source ED detects on it is corresponding, can realize the switching of LAV as follows:
Step 401, source ED is that when to detect in LAV without active descending two layers of port, source ED sends request message to DED, and request message is used for source ED needing the LAV of switching to inform DED.
Step 402, DED receives the request message that source ED sends, and judges self whether to support this LAV switched, and if the determination result is YES, performs step 403, otherwise performs step 405.
Step 403, DED sends LAV assignment message to source ED, and LAV is distributed to oneself by appointment.
Step 404, source ED receives the LAV assignment message that DED sends, and determines LAV to switch to DED.
Step 405, DED sends refusal message to source ED, and to inform that source ED self does not support the LAV switched, not having can for distributing the ED specified.
Step 406, source ED receives the refusal message that DED sends, and does not perform LAV and switches.
It will be appreciated by those skilled in the art that, in practical application, multiple ED is existed for the same website in EVI system and source ED and object ED is the situation of DED, by DED, whether object ED can be supported that the LAV switched informs source ED by LAV assignment message, perform LAV by the object ED of source ED indicated by LAV assignment message and switch.Wherein the specific implementation of DED distribution ED can be same as the prior art or similar, do not repeat them here.
The schematic flow sheet of ageing time is consulted in the LAV changing method that Fig. 7 provides for the embodiment of the present invention five.On technical solutions of above embodiments basis, the ageing time of setting on the ED of source or the upper ageing time set of object ED, in the ageing time that basis self is preset separately, and the minimum value in the ageing time of carrying in the message of opposite end to determine time, its specific implementation process can with reference to following step as shown in Figure 7:
Step 501, source ED carries self default ageing time in the first message, for ease of describing, is called the first ageing time herein.
Step 502, object ED receives the first message, obtains the first ageing time, and compares with the default ageing time of self, for ease of describing.The default ageing time on object ED is claimed to be the second ageing time herein.
Step 503, object ED gets minimum time in the first ageing time and the second ageing time as ageing time, according to this ageing time, starts timer, and by the second message, this ageing time is sent to source ED.
Step 504, source ED receives the second message, obtains the ageing time of wherein carrying, and starts timer according to this ageing time.
By adopting the embodiment of the present invention, source ED and object ED can be made to consult to determine ageing time.Like this, source ED and object ED just after determining ageing time, can start timer, with in ageing time then, performs and operates accordingly, specifically can see the explanation of the invention described above embodiment of the method.
It will be understood by those skilled in the art that in the present embodiment it is the ageing time directly determining to need setting on object ED, and by the second message, the ageing time that the needs determined set is sent to source ED, by source ED in this, as ageing time; And in practical application, object ED also directly can carry the ageing time that it is preset in the second message, and according to the ageing time of setting themselves, minimum ageing time is defined as the ageing time needing setting.
Below by for the practical application of technical solution of the present invention under a kind of concrete scene, the specific implementation process of embodiment of the present invention technical scheme is described.
The schematic flow sheet of the LAV changing method that Fig. 8 provides for the embodiment of the present invention six.In the present embodiment, with the ED1 in the system of EVI shown in Fig. 2 for source ED, ED for the purpose of ED2, ED3 is far-end ED is that example is described, wherein, LAV1 switches ED2 by ED1, ageing time is consulted to obtain by source ED and object ED, wherein ED1, ED2, for Ethernet connects between convergence switch, ED1 and ED3, for EVI connects between ED2 and ED3, ED1, ED2, ED3 and convergence switch can according to the interfaces receiving uplink traffic, determine to forward the downlink traffic corresponding with this uplink traffic by same-interface, study mechanism is herein same as the prior art, do not repeat them here.In the present embodiment, realize the mutual of message between ED1 and ED2 by hello packet, particularly, as shown in Figure 8, the present embodiment LAV changing method can comprise the steps:
Step 601, when ED1 judges to need the LAV of self to switch to object ED, enters LAV and moves flow process, send hello packet to ED2, initiate LAV migration request.
Wherein, described hello packet is the hello packet carrying TYPE254 class TLV, namely carries the hello packet that type is the TLV of 254.The form of the TLV that the type is 254 is as shown in Fig. 9, Figure 10 and Figure 11:
Wherein, the type field is the types value of 1 byte, and definition value is 254; Length field is the length mark of 1 byte, mark TLV length; Flags field, takies 1 byte; Sequence Number field is the identification message sequence number of 2 bytes, for the confirmation to message; Transfer Timer field is 1 byte, for defining transition process total time; Transfer Neighbor id field is 6 bytes, for identifying the system identifier of migration initiating equipment; Transfer VLAN id field is 2 bytes, for identifying the LAV of migration; Transfer MAC field is 6 bytes, and record sends the Local MAC address entries in the LAV of migration, can carry multiple.
The detailed flag bit of Flags field as shown in Figure 10, comprising: Reserved field, reservation position, 0-3 position; TR(Transfer Request, migration request) field is the migration flag of 1bit; TA(Transfer Accept, migration confirms) be the migration acknowledgement bit of 1bit; F(First) be the start of message (SOM) packet labeling position of 1bit; L(Last) be the ENMES packet labeling position of 1bit.As shown in figure 11, wherein Reserved is reservation position, 0-3 position to the detailed flag bit of Transfer VLAN id field, and all the other 12bit are VLAN-ID.
The type is the TLV of 254, is the new TLV expanded on existing hello packet basis, for carrying the information such as relevant mac list item, thus making source ED and object ED, namely completing the transition process of LAV between ED1 and ED2 by hello packet.
In the present embodiment, ED1 can carry Local MAC address entries and the first ageing time in the hello packet sent, particularly, ED1 can by the TR position 1 of TLV in hello packet, mark migration request, TA position 0, when not relating to hello burst, F and L all puts 1 in position, fill Sequence Number identification message sequence (initial value is 1), filling its own system ID is Transfer Neighbor ID, mark initiates the system identifier of migration request, fill Transfer Timer value, acquiescence 30s(i.e. the first ageing time), fill Transfer VLAN ID value, the LAV ID of mark migration, fill Transfer MAC, the Local MAC address entries of mark migration LAV1.
In this step, if the size that the size of the Local MAC address entries of LAV1 can be carried more than a hello packet, now burst process can be carried out by the F position in Flags field and L position, concrete, can by F position 1 in first message, L position 0, by position, F position 0, L 0 in middle burst, Sequence Number is filled to front 1 slicing sequence+1, in the burst of position, end, position 1, Sequence, F position 0, L Number is filled to front 1 slicing sequence+1.
It should be noted that, after ED1 enters migration flow process, ED1 can not delete remote equipment MAC address entries corresponding to its LAV1 stored at once, still can be used for after carrying out specific identifier forwarding, and delete after local timer arrives ageing time, ensure still to carry out forwarded upstream to the not instant flow switched in transit time, but for Local MAC address entries, then must notice to ED3 and delete, to make ED3, downlink traffic be changed into be forwarded to ED2 by being forwarded to ED1.
Step 602, ED2 receives ED1 and sends hello packet, processes hello packet.
After ED2 receives hello packet, can determine to need the LAV of migration whether effective in this locality, only at LAV when this locality is effective, just can process hello packet, return the hello packet of response to ED1.
Step 603, ED2 returns hello packet to ED1.
Particularly, after ED2 receives the migration request of ED1, determine that moved LAV is after this locality is effective, can process this hello packet, and respond, return the hello packet carrying the TYPE254 class TLV that the present invention defines, wherein:
TR set 0, response message not set;
TA position 1, mark accepts migration request;
Sequence Number: identify and request message is confirmed, 1 is added to the sequence number of request message;
Transfer Neighbor ID: fill migration person (i.e. ED1) system identifier, consistent with request message;
Transfer Timer: compare with local Configuration Values after receiving the value of neighbours (i.e. ED1), gets two ends minimum value and fills, and ED2 end starts Helper Timer timer simultaneously.
ED1, after receiving this response message, starts Transfer Timer timer according to last negotiation value.
Wherein, time value in Transfer Timer is exactly the minimum value of the ageing time pre-set in ED1 and ED2, like this, the time that ED1 and ED2 will carry according to Transfer Timer in this response hello packet as ageing time, and starts corresponding timer.
Step 604, ED1 receives the hello packet that ED2 returns.
The time that ED1 can carry according to the Transfer Timer in the TLV in this hello packet as ageing time, and starts corresponding timer
Step 605, ED2 stores the Local MAC address entries carried in the hello packet of ED1 transmission, and notices this Local MAC address entries to ED3, carries out flow switch to make ED3 according to Local MAC address entries.
Preferably, the Local MAC address entries that this locality stores can also be labeled as temporary address, to be deleted this temporary address afterwards by ED2.
It should be noted that, after LAV1 is switched to ED2 by ED1, ED2 this locality may not have two layers of list item of equipment in LAV1, and now, ED2, after receiving the flow that ED3 beams back, needs this flow to forward as all downlink ports of unknown unicast at this LAV1.
Step 606, all active two layer interface transmission source MAC Address that ED2 is corresponding with LAV1 on convergence switch are the broadcasting packet of remote equipment MAC Address.
Wherein, the MAC Address of the equipment that the LAV1 of remote equipment MAC Address corresponding to ED3 comprises, by sending broadcasting packet to ED3, the MAC address entries that convergence switch stores can be refreshed, making convergence switch uplink traffic be changed to be forwarded to ED2 by being forwarded to ED1.
Step 607, when the timer of ED1 arrives ageing time, ED1 deletes the local remote equipment MAC address entries stored.
Step 608, when the timer of ED2 arrives ageing time, MAC Address non-existent in dynamic MAC list item, according to dynamic MAC list item, is deleted by ED2 from Local MAC address entries, and the Local MAC address entries after upgrading is sent to ED3, and delete this Local MAC address entries.
Concrete, in the dynamic MAC list item of ED2, store the MAC Address of all devices that it can reach, when arriving ageing time, the MAC Address that ED2 can reach according to it, by local device MAC Address, self inaccessible MAC Address is deleted.
In above-mentioned steps, step 605 and step 606 can adjust execution sequence according to reality, and step 607 and step 608 can adjust execution sequence according to reality.
It should be noted that, if at the end of current LAV re-optimization flow process is not, this LAV is again by re-optimization, now need to make at once local timer that source ED and object ED is arranged then, to terminate current process, and perform respective handling, and restart LAV re-optimization flow process according to step 601-608.
By adopting the embodiment of the present invention, source ED can be made when determining that LAV is switched to object ED, initiatively the Local MAC address entries corresponding with this LAV that self stores is sent to object ED, make object ED by this Local MAC address entries that floods to far-end ED, improve the whole network MAC no-load speed, thus effectively improve LAV flow convergence rate, reduce the flow interrupt time, improve continuity and the reliability of Vlan business.
Figure 12 is the structural representation of a kind of ED that the embodiment of the present invention seven provides.The present embodiment ED can be specifically the source ED described in above-described embodiment one, can perform each step of said method embodiment one, and particularly, as shown in figure 12, the present embodiment ED can comprise as lower module:
Judge module 11, needs LAV to switch to object ED for judging whether;
Transceiver module 12, for when the judged result of judge module 11 is for being, notice far-end ED deletes the MAC address entries corresponding with LAV, and sends the first message carrying the Local MAC address entries corresponding with LAV to object ED, to make object ED distally ED transmission Local MAC address entries; Wherein, Local MAC address entries is the MAC Address of the local device corresponding with LAV that source ED stores.
The present embodiment ED can need to be switched to other ED from LAV with it, and namely during object ED, can send the Local MAC address entries corresponding with LAV to object ED, its specific implementation process see each step of the invention described above embodiment of the method, can not repeat them here.
The structural representation of a kind of ED that Figure 13 provides for the embodiment of the present invention eight.On above-mentioned technical scheme basis embodiment illustrated in fig. 12, as shown in figure 12, the present embodiment ED also can comprise as lower module:
Processing module 13, for after transceiver module 12 carries the first message of the Local MAC address entries corresponding with LAV to object ED transmission, retain the local remote equipment MAC address entries corresponding with LAV stored, to ensure that uplink traffic is not interrupted in the process being switched to object ED at LAV.
As shown in figure 13, the present embodiment ED also can comprise:
Timing processing module 14, for setting ageing time, so that in ageing time then, deletes remote equipment MAC address entries; Wherein, this ageing time is that source ED sets according to the ageing time preset, or for the purpose of the ageing time of carrying in the second message of sending of ED, or the minimum ageing time in the ageing time of carrying in the second message sent for the ageing time preset and object ED.
In the present embodiment, ED as source ED can in switching LAV process, the remote equipment MAC address entries that temporary transient reservation is corresponding with LAV, with in LAV handoff procedure, ED still can utilize this remote equipment MAC address entries to carry out the forwarding of uplink traffic, its specific implementation see the explanation of the invention described above corresponding method embodiment, can not repeat them here.
In embodiment shown in above-mentioned Figure 12 or Figure 13, described judge module 11, specifically can be used for when descending two layers of port that in LAV, nothing is active being detected, judges to need LAV to switch to object ED; Or determine LAV re-optimization specifically for working as, and when being assigned to object ED, judge to need LAV to be switched to object ED.Particularly, when ED is the ED of non-designated edge device DED, above-mentioned transceiver module 12, also can be used for sending request message to DED, and this request message is for will source ED need the LAV switched inform DED; And also for receiving the LAV assignment message that DED sends; Correspondingly, above-mentioned judge module 11, specifically can be used for working as the LAV assignment message that transceiver module 12 receives DED transmission, and when LAV is distributed to object ED, according to LAV assignment message, LAV is switched to object ED.
Figure 14 is the structural representation of a kind of ED that the embodiment of the present invention nine provides.The present embodiment ED can be specifically the object ED described in above-described embodiment three, can perform each step of said method embodiment three, and particularly, as shown in figure 14, the present embodiment ED can comprise as lower module:
Receiving processing module 21, for receiving the first message that source ED sends, obtain and store the Local MAC address entries corresponding with the LAV switched carried in the first message, wherein, Local MAC address entries is the MAC Address of the local device corresponding with LAV that source ED stores;
Flood module 22, to flood Local MAC address entries, with the MAC Address making far-end ED learn local device, and carry out traffic transport according to the MAC Address of local device for distally ED.
The present embodiment ED can be provided as the ED of source ED to realize the switching of LAV in website with above-described embodiment two, and its specific implementation process see each step of the invention described above embodiment of the method, can not repeat them here.
The structural representation of a kind of ED that Figure 15 provides for the embodiment of the present invention ten.On above-mentioned technical scheme basis embodiment illustrated in fig. 14, as shown in figure 15, the present embodiment ED also can comprise as lower module:
Timing processing module 23, for setting ageing time, so that in ageing time then, according to the dynamic MAC list item that object ED stores, MAC Address non-existent in dynamic MAC list item is deleted from Local MAC address entries, and use the Local MAC address entries that the synchronous far-end ED of Local MAC address entries synchronously stores, wherein, in dynamic MAC list item, store the MAC Address of all terminal equipments that object ED can reach;
Wherein, for the purpose of described ageing time, ED sets according to the ageing time preset, or be the ageing time of carrying in the first message that the ED in source sends, or the minimum ageing time in the first message sent for the ageing time preset and source ED in the ageing time of carrying.
In addition, as shown in figure 15, the present embodiment ED also can comprise:
Message sending module 24, for after the first message receiving source ED transmission, the downstream interface active by object ED sends the 3rd message to two layers of convergence switch, the remote equipment MAC Address corresponding with the LAV switched that for the purpose of the source MAC of the 3rd message, ED learns, initiatively to refresh the MAC address entries that two layers of convergence switch store, uplink traffic user sent to make two layers of convergence switch is drawn to object ED by source ED.
The present embodiment ED can realize with website in need to switch the ED of LAV, namely source ED carries out alternately, realizing ED LAV being switched to the present embodiment, i.e. object ED, and specific implementation process see the explanation of the invention described above correlation method embodiment, can not repeat them here.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (16)
1. a LAV changing method, be applied in the virtual interconnected EVI system of Ethernet, described EVI system comprises site-local and remote station, described site-local accesses described EVI system by source edge device ED and object ED, described remote station accesses described EVI system by far-end ED, it is characterized in that, described method comprises:
Described source ED judges whether to need local activation VLAN LAV to switch to described object ED;
When judged result is for being, described source ED notifies that described far-end ED deletes the media corresponding with described LAV and gets involved key-course MAC address entries, and the first message carrying the local Local MAC address entries corresponding with described LAV is sent to described object ED, send described Local MAC address entries to make described object ED to described far-end ED;
Wherein, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores.
2. the method for claim 1, is characterized in that, described source ED judges whether to need LAV to switch to described object ED, specifically comprises:
When described source ED detects descending two layers of port that in described LAV, nothing is active, described source ED judges to need described LAV to switch to described object ED; Or
Described source ED determines described LAV re-optimization, and when being assigned to described object ED, judges to need described LAV to be switched to described object ED.
3. method as claimed in claim 2, it is characterized in that, when described source ED is the ED of non-designated edge device DED, when described source ED detects descending two layers of port that in described LAV, nothing is active, described ED judges to need described LAV to switch to described object ED, specifically comprises:
Described source ED sends request message to described DED, and described request message is for will described source ED need the LAV switched inform described DED;
When described source ED receives the LAV assignment message of described DED transmission, and when described LAV is distributed to described object ED, described LAV is switched to described object ED according to described LAV assignment message by described source ED.
4. the method as described in claim 1,2 or 3, is characterized in that, described to after described object ED sends and carries the first message of the Local MAC address entries corresponding with described LAV, also comprises:
Retain the local remote equipment MAC address entries corresponding with described LAV stored, to ensure that uplink traffic is not interrupted in the process being switched to described object ED at described LAV.
5. method as claimed in claim 4, is characterized in that, also comprise:
Setting ageing time, so that in described ageing time then, deletes described remote equipment MAC address entries;
Wherein, described ageing time is that described source ED sets according to the ageing time preset, or be the ageing time of carrying in the second message that described object ED sends, or the minimum ageing time in the ageing time of carrying in the second message sent for the ageing time preset and described object ED.
6. a LAV changing method, be applied in the virtual interconnected EVI system of Ethernet, described EVI system comprises site-local and remote station, described site-local accesses described EVI system by source ED and object ED, described remote station accesses described EVI system by far-end ED, it is characterized in that, described method comprises:
Described object ED receives the first message that described source ED sends, obtain and store the Local MAC address entries corresponding with the LAV switched carried in described first message, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores;
Described object ED to flood described Local MAC address entries to described far-end ED, to make described far-end ED learn the MAC Address of described local device, and carries out traffic transport according to the MAC Address of described local device.
7. method as claimed in claim 6, is characterized in that, also comprise:
Setting ageing time, so that in described ageing time then, according to the dynamic MAC list item that described object ED stores, non-existent MAC Address in described dynamic MAC list item is deleted from described Local MAC address entries, and use the Local MAC address entries that the synchronous described far-end ED of Local MAC address entries synchronously stores, wherein, the MAC Address of all terminal equipments that described object ED can reach is stored in described dynamic MAC list item;
Wherein, described ageing time is that described object ED sets according to the ageing time preset, or be the ageing time of carrying in the first message that the ED in described source sends, or the minimum ageing time in the ageing time of carrying in the first message sent for described default ageing time and described source ED.
8. method as claimed in claim 6, is characterized in that, described object ED also comprises after receiving the first message of source ED transmission:
Described object ED sends the 3rd message by self active downstream interface to two layers of convergence switch, the source MAC of described 3rd message is the remote equipment MAC Address corresponding with the LAV of described switching that described object ED learns, initiatively to refresh the MAC address entries that described two layers of convergence switch store, uplink traffic user sent to make described two layers of convergence switch is drawn to described object ED by described source ED.
9. an ED, is characterized in that, comprising:
Judge module, needs LAV to switch to object ED for judging whether;
Transceiver module, for when the judged result of described judge module is for being, notice far-end ED deletes the MAC address entries corresponding with described LAV, and the first message carrying the Local MAC address entries corresponding with described LAV is sent to described object ED, send described Local MAC address entries to make described object ED to described far-end ED; Wherein, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores.
10. ED as claimed in claim 9, is characterized in that, described judge module, specifically for when descending two layers of port that in described LAV, nothing is active being detected, judges to need described LAV to switch to described object ED; Or determine described LAV re-optimization specifically for working as, and when being assigned to described object ED, judge to need described LAV to be switched to described object ED.
11. ED as claimed in claim 10, it is characterized in that, when described ED is the ED of non-designated edge device DED, described transceiver module, also for sending request message to described DED, described request message is for will described source ED need the LAV switched inform described DED; And also for receiving the LAV assignment message that described DED sends;
Described judge module, specifically for receiving the LAV assignment message that described DED sends when described transceiver module, and when described LAV is distributed to described object ED, switches to described object ED according to described LAV assignment message by described LAV.
12. ED as described in claim 9,10 or 11, is characterized in that, also comprise:
Processing module, for after described transceiver module carries the first message of the Local MAC address entries corresponding with described LAV to described object ED transmission, retain the local remote equipment MAC address entries corresponding with described LAV stored, to ensure that uplink traffic is not interrupted in the process being switched to described object ED at described LAV.
13. ED as claimed in claim 12, is characterized in that, also comprise:
Timing processing module, for setting ageing time, so that in described ageing time then, deletes described remote equipment MAC address entries;
Wherein, described ageing time is that described source ED sets according to the ageing time preset, or be the ageing time of carrying in the second message that described object ED sends, or the minimum ageing time in the ageing time of carrying in the second message sent for the ageing time preset and described object ED.
14. 1 kinds of ED, is characterized in that, comprising:
Receiving processing module, for receiving the first message that source ED sends, obtain and store the Local MAC address entries corresponding with the LAV switched carried in described first message, described Local MAC address entries is the MAC Address of the local device corresponding with described LAV that described source ED stores;
Flood module, to flood described Local MAC address entries, to make described far-end ED learn the MAC Address of described local device, and carry out traffic transport according to the MAC Address of described local device for distally ED.
15. ED as claimed in claim 14, is characterized in that, also comprise:
Timing processing module, for setting ageing time, so that in described ageing time then, according to the dynamic MAC list item that described object ED stores, non-existent MAC Address in described dynamic MAC list item is deleted from described Local MAC address entries, and use the Local MAC address entries that the synchronous described far-end ED of Local MAC address entries synchronously stores, wherein, in described dynamic MAC list item, store the MAC Address of all terminal equipments that described object ED can reach;
Wherein, described ageing time is that described object ED sets according to the ageing time preset, or be the ageing time of carrying in the first message that the ED in described source sends, or the minimum ageing time in the ageing time of carrying in the first message sent for described default ageing time and described source ED.
16. ED as claimed in claim 14, is characterized in that, also comprise:
Message sending module, for after the first message receiving described source ED transmission, the downstream interface active by described object ED sends the 3rd message to two layers of convergence switch, the source MAC of described 3rd message is the remote equipment MAC Address corresponding with the LAV of described switching that described object ED learns, initiatively to refresh the MAC address entries that described two layers of convergence switch store, uplink traffic user sent to make described two layers of convergence switch is drawn to described object ED by described source ED.
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