CN101483573A - Method and network node for GVRP dynamic learning - Google Patents
Method and network node for GVRP dynamic learning Download PDFInfo
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Abstract
The present invention provides a dynamic learning method of GARP VLAN registration protocol (GVRP) and network nodes, wherein, after the network nodes on a rapid ring protect protocol (RRPP) ring receives GVPR registration messages aiming at a virtual local area network (VLAN) through a port of the enabling RRPP property, the registration messages of the VLAN are then storied in the port, and at the same time, the registration messages of the VLAN are synchronized with the enabling RRPP property and are then storied on other activated ports. Therefore, it is not necessary to perform a dynamic learning of registration messages of a VLAN after a link switch caused by link fault or by link recovery, transmission of data messages on the link after switch can be realized directly and the flow can be recovered quickly.
Description
Technical field
The present invention relates to the network communications technology, particularly the method and the network node of a kind of virtual local network log-on protocol of Generic Attribute Registration Protocol (GVRP, GARP VLAN Registration Protocol) dynamic learning.
Background technology
Quick ring protection agreement (RRPP; Rapid Ring Protection Protocol) be the link layer protocol that is specifically designed to Ethernet ring; it can prevent the broadcast storm that data loopback causes when the ether ring is complete; can recover the communication link between each node on the looped network rapidly when arbitrary link disconnects on the ether ring, the ether ring that will enable RRPP usually is called RRPP ring.
Mainly comprise on the common RRPP ring: host node and transmission node, as shown in Figure 1, host node and transmission node are to have enabled the network equipment of RRPP and had the port that inserts this RRPP ring, transmission equipment only is used for the connection between the transmission node usually, carries out data message and the work of control message forwarding.Wherein, host node is to initiate the main running node that loop prevention was surveyed and carried out to loop, and its master port sends health detection message every fixing duration on the net at RRPP ring.When the link on RRPP ring does not have fault, host node blocks its secondary port (transmission of these port block data and reception, the still transmission of retentive control message and reception), can't transmit data message, after detecting link on the RRPP ring and breaking down, remove the secondary port of this host node, carry out the forwarding of data message, thereby the transmission node on the assurance RRPP ring can both receive data message, and sends common address flush (Common_Flush_FDB) message by Primary port and secondary port.Wherein, after the link that transmission node connected breaks down, can send link failure (Link-down) message to host node, after host node receives this Link-down message, determine that the link on the RRPP ring breaks down, perhaps, the secondary port of host node does not receive health detection message in setting duration, determines that then the link on the RRPP ring breaks down.
After each transmission node receives the Common_Flush_FDB message, refresh the mac address forwarding table of self.Behind the link-recovery that breaks down, can on RRPP ring, send link-recovery (Link-up) message with this link-attached transmission node, and temporary transient obstruction recovers link-attached port with this, host node blocks its secondary port after receiving this Link-up message, and be sent completely address flush (Complete_Flush_FDB) message, after transmission node receives the Complete_Flush_FDB message, the port of unblocking.
For the Virtual Local Area Network on the RRPP ring is carried out Dynamic Maintenance, introduced GVRP.After each node on the RRPP ring enables the GVRP characteristic, VLAN log-on message that can desampler, and propagate to other node after dynamically updating the VLAN log-on message of local reception port.Have only when port possesses the log-on message of certain VLAN, just can carry out reception and transmission at this VLAN message.
As shown in Figure 1, the switch G that the switch F that PC1 connects is connected with PC2 has gone up static configuration behind the VLAN10, the GVRP logon message of VLAN10 information is carried in transmission, after transmission node C receives GVRP logon message from switch F, at receiving port is the log-on message of storage VLAN10 on the port P3, and transmits on RRPP ring; After transmission node E receives GVRP logon message from switch G, be the log-on message of storage VLAN10 on the P3 according to the VLAN10 information that wherein comprises at receiving port, and on RRPP ring, transmit.After other node on the RRPP ring receives the GVRP logon message, all on receiving port, store the log-on message of VLAN10, finally finish the dynamic learning of VLAN10.Because the secondary port of host node is in blocked state, therefore the secondary port of host node can not be learnt this VLAN10, and the port P1 of transmission node B and transmission node C, the port P2 of transmission node E can not learn VLAN10, therefore, when PC1 and PC2 communicated, data message transmitted via the link of transmission node C, transmission node D and transmission node E.
When the transmission link of above-mentioned data message breaks down, for example, link between transmission node C and transmission node D breaks down, then transmission node C and transmission node D can send the Link-down message to host node, after host node receives the Link-down message, the blocked state that can remove secondary port carries out link switchover, promptly switch to transmission node C, transmission node B, the link that host node and transmission node E constitute, but, because the part port on the link after switching does not have the log-on message of VLAN10, and has only the forwarding that when two ports are all learnt VLAN10, just can carry out at the data message of VLAN10, therefore, need just can carry out flow after the study of finishing VLAN10 on this link recovers.Behind the link failure recovery between transmission node C and the transmission node D, transmission node C and transmission node D send Link-up message and interim the obstruction and the link-attached port of fault recovery to host node, after host node receives the Link-up message, block the link that secondary port constitutes link switchover transmission back node C, transmission node D and transmission node E again, and send the Complete_Flush_FDB message.Because in the link failure process, the port P2 of transmission node C, the port P1 of transmission node D does not receive the aging incident that the GVRP logon message reaches the VLAN10 log-on message for a long time, these ports have not had the log-on message of VLAN10, therefore, after transmission node C and transmission node D receive the Complete_Flush_FDB message, though can remove blocked state immediately with fault recovery link institute connectivity port, but the port P2 that needs transmission node C, the port P1 of transmission node D finishes the dynamic learning process of VLAN10, therefore, can not recover flow immediately, cause flow interrupt a period of time.
Summary of the invention
In view of this, the invention provides a kind of method and network node of GVRP dynamic learning, so that in RRPP ring, carry out after the link switchover quick-recovery flow soon.
A kind of method of GVRP dynamic learning, this method comprises:
After network node on the RRPP receives GVRP logon message at VLAN by first port that enables the RRPP characteristic, the log-on message of this VLAN of storage on described first port, and when enabling second port UP of RRPP characteristic, the log-on message of described VLAN is synchronized to described second port stores.
A kind of network node is used to constitute RRPP ring, and this network node comprises: information memory cell and information synchronizing unit;
Described information memory cell, after being used for receiving GVRP logon message at VLAN by first port that enables the RRPP characteristic, the log-on message of this VLAN of storage on described first port, and the log-on message of this VLAN offered described information synchronizing unit;
Described information synchronizing unit is used for when enabling second port UP of RRPP characteristic, the log-on message of described VLAN is synchronized to described second port stores.
As can be seen from the above technical solutions, in method provided by the present invention and the network node, network node on the RRPP ring is behind the GVRP logon message that receives by one of them port that enables the RRPP characteristic at certain VLAN, on this port, store in the log-on message of this VLAN, the log-on message of this VLAN is synchronized on other port that enables RRPP characteristic and UP stores, no matter made before the link switchover that link failure causes still is the link switchover that causes of link-recovery, each port that enables the RRPP characteristic on each network node has all stored the log-on message of this VLAN, after link switchover, do not need the log-on message of this VLAN of dynamic learning again, directly realize the transmission of data message on link after the switching, fast quick-recovery flow.
Description of drawings
Fig. 1 is the schematic diagram of GVRP dynamic learning on the RRPP ring in the prior art;
The schematic diagram of GVRP dynamic learning on the RRPP ring that Fig. 2 provides for the embodiment of the invention;
The schematic diagram of the more preferably GVRP dynamic learning that Fig. 3 provides for the embodiment of the invention;
The schematic diagram of RRPP ring during link failure that Fig. 4 provides for the embodiment of the invention;
The structure chart of the network node that Fig. 5 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
After node on the RRPP ring receives GVRP logon message at VLAN by first port that enables the RRPP characteristic, the log-on message of this VLAN of storage on this first port, and after second port that enables the RRPP characteristic starts (UP), the log-on message of this VLAN is synchronized to this second port stores.
After described first port or second port go offline (Down), delete the log-on message of the described VLAN that stores on this first port or second port.
When first port when Down switches to UP, the log-on message of the described VLAN that stores on synchronous immediately second port; Perhaps, when described second port when Down switches to UP, the log-on message of the VLAN that stores on synchronous immediately first port.
Below in conjunction with specific embodiment said method is described in detail.Be example still with networking structure shown in Figure 1, suppose that all nodes in this RRPP networking all enable the GVRP characteristic, each time hangs and is equipped with the VLAN of configuring static as required, if promptly PC 1 and PC 2 need communicate, and configuration VLAN 10 on switch F and switch G in advance then.
In this networking, switch F static configuration behind the VLAN 10, periodically send the GVRP logon message to connected transmission node C, after transmission node C receives this GVRP logon message by port P3, on port P3, store the log-on message of VLAN 10, and on RRPP ring, transmit by port P1 and port P2.Because receiving port P3 is not the port that enables the RRPP characteristic, it promptly not the port on the RRPP ring, therefore, the process of managing herein is still same as the prior art, after transmission node B receives the GVRP logon message of transmission node C forwarding by port P2, on port P2, store the log-on message of VLAN 10, and the GVRP logon message is transmitted to host node A; Because port P2 is a port on the RRPP ring, and the port P1 of transmission node B UP, therefore, transmission node B stores for synchronously the port P1 of transmission node B the log-on message of VLAN 10.After host node A receives the GVRP logon message of transmission node B forwarding by master port, the log-on message of storage VLAN 10 on master port, and store for synchronously secondary port.Because secondary port is in blocked state, therefore, though storage can not be transmitted data message by the log-on message of VLAN 10; Other transmission node carries out identical processing for the GVRP logon message from transmission node C, and promptly transmission node D and transmission node E store the log-on message of VLAN 10 on port P1 and port P2.In like manner, GVRP logon message for switch G transmission at VLAN 10, transmission node E is behind the registration message of storage VLAN 10 on the port P3, log-on message at port P3 storage VLAN10, transmit this GVRP logon message by P1 port and P2 port, after each transmission node on the RRPP ring receives this GVRP logon message, on receiving port, store in the log-on message of VLAN 10, also can store to another port on the RRPP ring synchronously, at this moment, also store the log-on message of VLAN 10 on the port P2 of transmission node C and the port P3.
If the link failure between transmission node C and the transmission node D, then host node can be removed the blocked state of secondary port, at this moment, link is switched the link that constitutes to transmission node C, transmission node B, host node A, transmission node E, and, because transmission node each port on RRPP ring has all stored the log-on message of VLAN 10 on this link, therefore, data message can transmit on this link immediately, thereby recovers flow.
In this process, the port P2 of transmission node C and the port P1 of transmission node D switch to Down, then can delete the log-on message of VLAN 10 on port P2 and port P1, and in the process of Down the log-on message of another port synchronously not.
If the link-recovery between transmission node C and the transmission node D, then transmission node C after port P2 switches to UP, the log-on message of synchronous port P1 immediately, transmission node D after port P1 switches to UP, the log-on message of synchronous port P2 immediately.Therefore, transmission node C and transmission node D send the port P2 of the simultaneously interim blocks transmission node C of Link-up message and the port P1 of transmission node D to host node A, host node blocks secondary port after receiving the Link-up message, and sends the Complete_Flush_FDB message on RRPP ring.After transmission node C and transmission node D receive the Complete_Flush_FDB message, removing the interim port that blocks is the port P2 of transmission node C and the port P1 of transmission node D, since these two ports stores synchronized the log-on message of VLAN 10, therefore, the link that data message can be immediately constitutes from transmission node C, transmission node D and transmission node E transmits, and flow can recover rapidly.
In addition, at the log off procedure of dynamic vlan the time, method provided by the invention can also comprise: after each node on the RRPP receives cancellation message at VLAN by first port on the RRPP ring, delete the log-on message of this VLAN that stores on this first port, and the synchronizing characteristics of this first port suppressed the duration set, promptly in the setting duration behind the log-on message of this VLAN that deletion is stored on this first port, the VLAN log-on message of second port on the stores synchronized RRPP ring no longer.
In addition, if if each node does not receive GVRP logon message at this VLAN on the RRPP ring in the ageing time of the log-on message of VLAN, the log-on message of this VLAN of deletion storage on the port of self then.
When the user deleted the configuration of VLAN 10 on switch F and G, switch F and switch G can nullify message to the GVRP that connected transmission node sends at VLAN 10.After transmission node C received this GVRP cancellation message, deletion port P3 went up the log-on message of the VLAN 10 of storage, and transmitted by port P1 and port P2.After transmission node B receives this GVRP cancellation message, deletion port P2 goes up VLAN 10 log-on messages of storage, and the synchronizing characteristics that suppresses port P2 is set duration, this sets duration must be greater than the ageing time of VLAN 10 log-on messages, suppose to be set to the Transmission Time Interval of 3 times GVRP logon message, and this GVRP is nullified message continue to transmit.When the port P1 of transmission node B arrives in the ageing time of the log-on message of VLAN 10, can delete the log-on message that port P1 goes up the VLAN 10 of storage.
After transmission node D receives the GVRP cancellation message of transmission node C forwarding, deletion port P1 goes up the log-on message of the VLAN 10 of storage, and suppress the synchronizing characteristics of this port P1, in the setting duration of this inhibition, transmission node D can receive switch G and nullify message via the GVRP that transmission node E sends, and the log-on message of the VLAN on the port P2 10 is deleted.Other transmission node is nullified message to the GVRP that receives and is also carried out identical operations.Finally finish the cancellation of VLAN 10 in this RRPP ring.
After having used said method, because each node all can be learnt VLAN 10 at the port on the RRPP ring (comprising the port that enables RRPP in main ring and the subring), therefore, when PC 1 when sending datagram, except broadcasting, also can be broadcast to transmission node B and host node A, even can be broadcast in other subring via transmission node C, transmission node D and transmission node E formation link, though can not produce broadcast storm, can the bandwidth in the RRPP ring be exerted an influence.At this problem, the present invention can be further be synchronized to when second port stores at the log-on message with VLAN, and second port needles is blocked this VLAN, promptly stops second port to receive and sends data message at this VLAN; Receive GVRP logon message by this second port at this VLAN, after perhaps receiving the Common_Flush_FDB message or Complete_Flush_FDB message of host node transmission, if determine to have stored the log-on message of this VLAN and be in blocked state in this second port, then remove the obstruction that second port needles is carried out this VLAN at this VLAN.
Be example still with networking shown in Figure 2, after transmission node C receives the GVRP logon message that sends via transmission node E and transmission node D, at the log-on message of port P2 storage VLAN 10, and when storing for synchronously port P1, port P1 is blocked at VLAN 10.In like manner, the port P1 of transmission node B also can block at VLAN 10.If transmission node D receives the GVRP logon message that transmission node C sends earlier,, and when giving port P2 synchronously, port P2 is blocked at VLAN 10 then at the log-on message of port P1 storage VLAN 10; Behind the GVRP logon message that receives transmission node E transmission, determine to have stored among the port P2 log-on message of VLAN 10 and be in blocked state at VLAN 10, then remove the obstruction of port P2 at VLAN 10.Therefore the secondary port of host node A can not do special processing owing to just all VLAN were in blocked state originally.Other transmission node adopts similar processing, then in this RRPP ring, as shown in Figure 3, though the secondary port of the port P1 of transmission node C, the port P1 of transmission node B, host node A, the port P2 of transmission node E go up the log-on message of having stored VLAN 10, but owing to get clogged at this VLAN 10, therefore, data message can not be broadcast to the link that these ports connect.
Work as link failure, host node A receives that Link-down message or secondary port are not received the healthprobe message in setting duration and after removing the blocked state of secondary port, can send each transmission node renewal MAC of Common_Flush_FDB message notifying transmits, after each node receives the Common_Flush_FDB message, releasing is at the blocked state of VLAN 10, as shown in Figure 4, just can guarantee this moment flow can be along with the switching of link normal transmission immediately.
Behind link-recovery, host node can block secondary port after receiving the Link-up message or receiving health detection message by secondary port, and sends the Complete_Flush_FDB message.Because transmission node C and transmission node D are with the link-attached port UP of fault recovery and after being synchronized to the log-on message of VLAN10, also VLAN 10 is blocked, when transmission node C and transmission node D receive the Complete_Flush_FDB message, can remove the interim port that blocks, also can guarantee the rapid switching of flow.
More than be the description that method provided by the present invention is carried out, below network node provided by the present invention be described in detail.The structure chart of the network node that Fig. 5 provides for the embodiment of the invention, as shown in Figure 5, this network node comprises: information memory cell 501 and information synchronizing unit 502.
Information memory cell 501, after being used for receiving GVRP logon message at VLAN by first port that enables the RRPP characteristic, the log-on message of this VLAN of storage on first port, and the log-on message of this VLAN offered information synchronizing unit 502.
Information synchronizing unit 502 is used for when enabling second port UP of RRPP characteristic, and the log-on message of the VLAN that information memory cell 501 is provided is synchronized to second port and stores.
If second port is in the state of Down, then the log-on message that information synchronizing unit 502 will VLAN is synchronized to second port.
In addition, this network node can also comprise: first information delete cells 503 is used for deleting the log-on message of the VLAN that stores on first port behind the first port Down; Perhaps, behind the second port Down, delete the log-on message of the VLAN that stores on second port.
Further, information synchronizing unit 502 can also be used for after first port switches to UP from Down the log-on message of the VLAN that stores on synchronous immediately second port; Perhaps, after second port switches to UP from Down, the log-on message of the VLAN that stores on synchronous immediately first port.
That is to say,, then be synchronized to other immediately and enable the VLAN log-on message stored in the port of RRPP characteristic in case enable the port UP of RRPP characteristic in the network node.
This network node can also comprise: the second information deletion unit 504, be used for by first port receive nullify message at the GVRP of VLAN after, delete the log-on message of the VLAN that stores on first port.
Correspondingly, information synchronizing unit 502 can also be used for behind the log-on message of the VLAN that stores on the second information deletion unit 504 deletion, first port, and the log-on message that stops the VLAN will to store on second port in setting-up time is synchronized to first port.
Wherein, this setting-up time is set to the ageing time greater than log-on message usually, and makes second port receive in the time of GVRP cancellation message, and the VLAN log-on message on second port is not synchronized on first port again.
More preferably, this network node can also comprise: the 3rd information deletion unit 505, be used for receiving time interval at the GVRP logon message of VLAN when surpassing the ageing time of log-on message at this network node, the log-on message of the VLAN of deletion storage on first port and second port.
The bandwidth waste that each port causes because of the log-on message with VLAN on the inessential conversion link, this network node can further include: port block unit 506, be used for the log-on message of VLAN being synchronized to second port when storing, second port needles is blocked VLAN in information synchronizing unit 502; When this network node receives the common address flush Common_Flush_FDB message of host node transmission or finishes address flush Complete_Flush_FDB message, after perhaps receiving GVRP logon message at VLAN by second interface, if determine to have stored the log-on message of VLAN in second port and got clogged, then remove the obstruction that second port needles is carried out this VLAN at VLAN.
The network node of said structure can be applied to the host node on the RRPP ring, also can be applied to the transmission node on the RRPP ring, and original functional module in host node or the transmission node is not impacted.And network node only can be by having stored VLAN the port of log-on message receive data message at this VLAN.
By above description as can be seen, method provided by the invention and network node have the following advantages:
1) network node on the RRPP ring is behind the GVRP logon message that receives by one of them port that enables the RRPP characteristic at certain VLAN, on this port, store in the log-on message of this VLAN, the log-on message of this VLAN is synchronized on other port that enables RRPP characteristic and UP stores, no matter made before the link switchover that link failure causes still is the link switchover that causes of link-recovery, each port that enables the RRPP characteristic on each network node has all stored the log-on message of this VLAN, after link switchover, do not need the log-on message of this VLAN of dynamic learning again, directly realize the transmission of data message on link after the switching, fast quick-recovery flow.
2) the present invention can also be when the log-on message of the synchronous VLAN of port that other has been enabled the RRPP characteristic, further will be somebody's turn to do this VLAN will be blocked by synchronous port needles, receive the common address flush Common_Flush_FDB message of host node transmission or finish address flush Complete_Flush_FDB message until this network node, after perhaps being received GVRP logon message by synchronous port at this VLAN by this, remove the obstruction of this port needles again, thereby avoid the bandwidth waste that each port is caused because of the same broadcasting data messages of the log-on message with VLAN on the inessential conversion link this VLAN.
3) method provided by the present invention and network node can be suitable for for single RRPP ring, crossing RRPP ring or tangent RRPP ring.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (13)
1, a kind of method of virtual local network log-on protocol GVRP dynamic learning of Generic Attribute Registration Protocol is characterized in that this method comprises:
After fast the network node on the ring protection agreement RRPP receives GVRP logon message at virtual LAN VLAN by first port that enables the RRPP characteristic; the log-on message of this VLAN of storage on described first port; and when second port that enables the RRPP characteristic starts UP, the log-on message of described VLAN is synchronized to described second port stores.
2, method according to claim 1 is characterized in that, this method also comprises: after described first port goes offline Down, delete the log-on message of the described VLAN that stores on described first port; Perhaps, behind the described second port Down, delete the log-on message of the described VLAN that stores on described second port.
3, method according to claim 2 is characterized in that, after described first port switches to UP from Down, and the log-on message of the described VLAN that stores on synchronous immediately described second port; Perhaps, after described second port switches to UP from Down, the log-on message of the described VLAN that stores on synchronous immediately described first port.
4, method according to claim 1, it is characterized in that, this method also comprises: when described network node receive by first port nullify message at the GVRP of described VLAN after, delete the log-on message of the described VLAN that stores on first port, and the log-on message that stops the described VLAN will to store on second port in setting-up time is synchronized to described first port.
5, method according to claim 1, it is characterized in that, if described network node receives the ageing time that surpasses log-on message at the time interval of the GVRP logon message of described VLAN, the then log-on message of the described VLAN that deletion is stored on described first port and second port.
6, method according to claim 1 is characterized in that, is synchronized to described second port when storing at the log-on message with described VLAN, further comprises: described second port needles is blocked described VLAN;
Receive the common address flush Common_Flush_FDB message of host node transmission or finish address flush Complete_Flush_FDB message, after perhaps receiving GVRP logon message at described VLAN by described second interface, if determine to have stored the log-on message of described VLAN in described second port and got clogged, then remove the obstruction that described second port needles is carried out this VLAN at described VLAN.
According to the described method of the arbitrary claim of claim 1 to 6, it is characterized in that 7, the port of the log-on message of described network node by having stored described VLAN receives or send the data message at described VLAN.
8, a kind of network node is used to constitute RRPP ring, it is characterized in that, this network node comprises: information memory cell and information synchronizing unit;
Described information memory cell, after being used for receiving GVRP logon message at VLAN by first port that enables the RRPP characteristic, the log-on message of this VLAN of storage on described first port, and the log-on message of this VLAN offered described information synchronizing unit;
Described information synchronizing unit is used for when enabling second port UP of RRPP characteristic, the log-on message of described VLAN is synchronized to described second port stores.
9, network node according to claim 8 is characterized in that, this network node also comprises: first information delete cells is used for deleting the log-on message of the described VLAN that stores on described first port behind the described first port Down; Perhaps, behind the described second port Down, delete the log-on message of the described VLAN that stores on described second port.
10, network node according to claim 9 is characterized in that, described information synchronizing unit also is used for after described first port switches to UP from Down, the log-on message of the described VLAN that stores on synchronous immediately described second port; Perhaps, after described second port switches to UP from Down, the log-on message of the described VLAN that stores on synchronous immediately described first port.
11, network node according to claim 8, it is characterized in that, this network node also comprises: the second information deletion unit, be used for by first port receive nullify message at the GVRP of described VLAN after, delete the log-on message of the described VLAN that stores on first port;
Described information synchronizing unit also is used for behind the log-on message of the described VLAN that stores on the described second information deletion element deletion, first port, and the log-on message that stops the described VLAN will to store on second port in setting-up time is synchronized to described first port.
12, network node according to claim 8, it is characterized in that, this network node also comprises: the 3rd information deletion unit, be used for receiving time interval at the GVRP logon message of described VLAN when surpassing the ageing time of log-on message at this network node, the log-on message of the described VLAN of deletion storage on described first port and second port.
13, according to Claim 8 to the described network node of 12 arbitrary claims, it is characterized in that, this network node also comprises: the port block unit, be used for the log-on message of described VLAN being synchronized to described second port when storing, described second port needles is blocked described VLAN in described information synchronizing unit; When this network node receives Common_Flush_FDB message or the Complete_Flush_FDB message that host node sends, after perhaps receiving GVRP logon message at described VLAN by described second interface, if determine to have stored the log-on message of described VLAN in described second port and got clogged, then remove the obstruction that described second port needles is carried out this VLAN at described VLAN.
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| CN102130912A (en) * | 2011-03-09 | 2011-07-20 | 杭州华三通信技术有限公司 | Rapid ring protection protocol (RRPP)-based multiple virtual local area network (VLAN) register protocol (MVRP) realization method and equipment |
| CN102137019A (en) * | 2011-03-29 | 2011-07-27 | 华为技术有限公司 | Method for registering and ageing VLAN (Virtual Local Domain Network) and device thereof |
| CN102664745A (en) * | 2012-04-09 | 2012-09-12 | 北京东土科技股份有限公司 | Method and device for registering and deleting multicast list item based on ring network |
| CN101815107B (en) * | 2010-05-13 | 2013-10-09 | 华为技术有限公司 | Method, system and equipment for managing address in Ethernet ring |
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| CN101064632A (en) * | 2006-04-28 | 2007-10-31 | 西门子通信技术（北京）有限公司 | Method and system for protecting Ethernet network loop |
| CN101252539B (en) * | 2008-04-03 | 2011-08-10 | 杭州华三通信技术有限公司 | General-purpose attribute logging method and node |
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