CN101951345A - Message transmitting method and equipment - Google Patents
Message transmitting method and equipment Download PDFInfo
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- CN101951345A CN101951345A CN2010105083036A CN201010508303A CN101951345A CN 101951345 A CN101951345 A CN 101951345A CN 2010105083036 A CN2010105083036 A CN 2010105083036A CN 201010508303 A CN201010508303 A CN 201010508303A CN 101951345 A CN101951345 A CN 101951345A
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Abstract
The invention discloses a message transmitting method and message transmitting equipment. The method comprises that: Backup equipment receives a first Advertisement message from Master equipment; and when determining it is necessary to transmit a second Advertisement message according to the priority of a VRRP backup operator of the Master equipment, the Backup equipment sends the second Advertisement message to an exchange board, and the exchange board learns the virtual MAC of the VRRP backup operator to a port connected with the Backup equipment according to a source MAC address of the second Advertisement message. In the invention, the constant flow rate of the VRRP backup operator in state switching is ensured.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of sending method and equipment of message.
Background technology
In actual applications, in order to realize communicating by letter of main frame and external network, usually a default route need be set on terminal, it is the gateway that is provided with on the terminal, a router is pointed in its next jumping, thereby that can realize terminal and external network communicates by letter single router networking schematic diagram as shown in Figure 1.Wherein, as Router (router) when breaking down, then all are that the terminal of next jumping of default route all will be broken and the communicating by letter of outside with Router in this network segment.
In order to address the above problem, VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) technology is arisen at the historic moment, this VRRP is applied to (as the layer-3 switch or the router of static configuration default gateway) on layer-3 switch or the router, and carries out the terminal that wide area network inserts (or visiting other local area network (LAN)) faster, more effective redundancy fault-tolerant ability is provided for relying on default gateway.In addition, in present VRRP technology, except on original router, using, also will progressively be incorporated in the large-scale switching net, to realize the 3rd layer of exchange redundancy backup function of high reliability.
Concrete, VRRP forms the VRRP group with many routers in the system, has a virtual default gateway IP address and MAC (Media Access Control, medium access control) address in this VRRP group.At any time, having only the router of control virtual gateway address in the VRRP group is active router (Master), and transmits packet by active router in the VRRP group; If active router breaks down, then need in the VRRP group, select the highest redundancy backup router (Backup) of priority to come the replacement activity router.
As can be seen, since the terminal configuration in the network virtual gateway address of VRRP group, when active router breaks down, the virtual gateway address does not change, therefore, terminal still can keep being connected with the virtual gateway address, and network can not be subjected to the influence of Single Point of Faliure (being the active router fault), thereby has solved the problem of router failure in the network preferably.
In order to guarantee the normal use of VRRP, in VRRP, defined following state:
(1) Initialize state: i.e. the initial condition of VRRP backup group, after configuring, the VRRP backup group promptly is in the Initialize state, if receive the Up incident afterwards, then the Initialize state can be moved to Master state or Backup state.
(2) Master state: i.e. the major state of VRRP backup group, the router that is in the Msater state is responsible for transmitting the flow of main frame in the local area network (LAN).
(3) Backup state: the i.e. Status of Backups of VRRP backup group, the router that is in the Backup state is converting flow not, only as the backup of Master state router, when Master state router breaks down, the router that then is in the Backup state can forward the Master state to, takes over the flow of main frame in the local area network (LAN).
In addition, in VRRP, also defined following timer:
(1) Master_Down_Timer: i.e. the timer of Backup router monitoring Master router, the timeout interval of timer is Master_Down_Interval, behind timer expiry, then the Backup router will be transformed into the Master state.
(2) Adver_Timer: promptly the Master router regularly sends the timer of Advertisement (notice) message.
Describe below in conjunction with VRRP networking schematic diagram shown in Figure 2 operation principle VRRP.In Fig. 2, Router A and Router B form a virtual router, are referred to as the VRRP backup group.Wherein, this virtual router has virtual ip address and the virtual mac address of self, and the router (Router A and Router B) in the VRRP backup group has the IP address and the MAC Address of self reality.In order to communicate with external network, the terminal in the local area network (LAN) need default gateway be set to the IP address (being virtual ip address) of this virtual router.
When router migration arrives the Master state, to in this router, issue virtual ip address and virtual mac address, and send gratuitous ARP (Address Resolution Protocol, address resolution protocol) message, can transmit by the Master router to guarantee network traffics.In addition, when router during from Master state transition to other states, this router also can be deleted virtual ip address and the virtual mac address that issues in this router.
Further, because the terminal in the local area network (LAN) need default gateway be set to the IP address of this virtual router, then pass through the gratuitous ARP packet that the Master router sends, terminal in the local area network (LAN) can be known the corresponding relation of gateway IP and gateway MAC, and the terminal in the local area network (LAN) can come to communicate with other networks by this virtual router afterwards.In addition, the router that is in the Master state can start timer Adver_Timer, and timed sending VRRP Advertisement message, the source MAC of this Advertisement message is the virtual MAC of VRRP backup group, by this Advertisement message, can make down the Layer 2 switch hung with virtual mac learning to the port that connects the Master router, thereby guaranteeing that data flow that the terminal in the local area network (LAN) sends to outer net all can be forwarded on the Master router transmits.
In the prior art, after a VRRP backup group is stable, need send the Advertisement message to the Backup router, regularly the state of announcement oneself by the Master router; The Backup router does not send message, receive only the Advertisement message that the Master router sends, and determine according to this Advertisement message whether the work of Master router is normal, when the work of Master router is undesired, determine that oneself needs transition status; When the Master router is working properly, determine that oneself does not need transition status.
Wherein, the router that is in the Master state in the VRRP backup group need carry out following processing:
According to Advertisement_Interval interval timed sending Advertisement message.
If receive the Advertisement message that the opposite end sends, the priority of then checking the end-to-end router that carries in the Advertisement message if priority is 0, then needs to send an Advertisement message; If priority is not 0, then need the priority size of further relatively local and opposite end, if opposite end priority greater than the local first level, perhaps opposite end priority equate with the local first level and peer IP address bigger than local ip address, then forward the Backup state to; Otherwise, abandon the Advertisement message that receives.
If this device fails then sends a priority and is 0 Advertisement message, trigger end-to-end router and transfer new Master fast to, the Initialize state is moved in this locality simultaneously.
In addition, the router that is in the Backup state in the VRRP backup group need carry out following processing:
If Master_Down_Timer does not receive the Advertisement message that the Master router sends in the time, then think the Master router failure, and carry out following operation: send the Advertisement message, send the gratuitous ARP request with virtual IP address and virtual MAC, and start Advertisement announcement timer, and transfer the Master state to from the Backup state.
If received the Advertisement message that the opposite end sends, the priority of then checking the end-to-end router that carries in the Advertisement message, if priority is 0, Master_Down_Timer is changed to Skew_time with timer; If this locality does not enable to seize, perhaps Ben Di priority is lower than the priority of opposite end, and the Master_Down_Timer timer of then resetting recomputates Master fault time-out time; If this locality has enabled to seize and the local first level more than or equal to opposite end priority, then abandon the Advertisement message that receives, wait for the Master_Down_Timer timer expiry.
In networking shown in Figure 2, Router A is the Master router, and Port 1 is the up link of Router A, and after the Port of RouterA 1 fault, the then priority in the RouterA reduction backup group, and triggering Router B seizes and becomes new Master.Afterwards, if after Port 1 fault recovery of Router A, then the priority of Router A can return to the preceding value of fault, makes the priority of Router A be higher than the priority of Router B.At this moment, after Router A receives the Advertisement message of Master state router Router B, can compare the priority at two ends, and find self priority ratio opposite end height, then abandon the Advertisement message that receives, the Master_Down_Timer timer expiry on Router A.
After the Master_Down_Timer of Router A is overtime, then Router A will carry out following processing:
(1) Router A sends the Advertisement message;
(2) Router A sends the gratuitous ARP request with the virtual IP address and the virtual MAC of virtual router;
(3) RouterA state transition is to the Master state;
(4) RouterA is provided with virtual IP address and virtual MAC in this equipment;
(5) Router A with virtual MAC as source MAC, and according to Advertisement notification time timed sending Advertisement message.
Router B will carry out following processing:
(1) Router B receives the Advertisement message that Router A sends;
(2) Router B compares opposite end and local priority, finds that opposite end priority is higher than the local first level, arrives the Backup state with state transition;
(3) virtual IP address and the virtual MAC in the Router B deletion local device.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
Because CPU (the Central Processing Unit of Network Transmission and two ends Router, central processing unit) disposal ability difference, before the virtual IP address and virtual MAC carried out on the Router B on (3) the step deletion Router B, may receive the gratuitous ARP that RouterA sent in (2) step earlier.
When this situation occurring, owing to also do not have enough time to delete virtual IP address and virtual MAC, then Router B can think and has IP address conflict in the network, so to gratuitous ARP request response arp reply Router B on.The source MAC of this arp reply message is the virtual MAC of VRRP backup group, source IP is a virtual IP address, this gratuitous ARP packet will be transmitted to Router A through the Layer 2 switch of following two routers of connection of hanging this moment, and virtual mac learning mistake is moved on the Port6 in the virtual MAC address that can cause acquiring on the Layer 2 switch from Port 5.Afterwards, the uplink traffic of the PC under the Layer 2 switch can all be forwarded on the Router B that becomes Backup.
And because Router B can delete the virtual MAC and the virtual IP address of this equipment after (3) step, therefore, after Router B executed for (3) step, uplink traffic will can't be forwarded to Internet all, and cutout occurred.And this cutout situation can continue always, until Router A arrives after date in Advertisement message notification time, send the Advertisement message once more, just can trigger down hang Layer 2 switch with virtual mac learning to correct port Port 5.If the Adver_Timer timer of Router A is very long blanking time, then the terminal cutout time also can be very long in the local area network (LAN).
Summary of the invention
The invention provides a kind of sending method and equipment of message so that VRRP backup group state when switching flow do not interrupt.
In order to achieve the above object, the present invention proposes a kind of sending method of message, be applied to comprise in the system of switch and VRRP backup group, at least comprise Master equipment and Backup equipment in the described VRRP backup group, when described Master equipment from Master state transition to the Backup state, to Master state transition, this method may further comprise the steps described Backup equipment from Backup state transition:
Described Backup equipment receives the Advertisement message from described Master equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message;
When determining that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message, described Backup equipment sends the 2nd Advertisement message to described switch, and the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group; So that described switch according to the source MAC of described the 2nd Advertisement message with the virtual mac learning of described VRRP backup group to the port that connects described Backup equipment.
Described Backup equipment receives the Advertisement message from described Master equipment, also comprises before:
Described Master equipment sends a described Advertisement message as source MAC to described Backup equipment with the real mac address of self.
Determine that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message, also comprise before:
The VRRP backup group priority of the more described Backup equipment of described Backup equipment and the VRRP backup group priority of described Master equipment;
If the VRRP backup group priority of described Master equipment is higher than the VRRP backup group priority of described Backup equipment, perhaps,
The interface IP address of the VRRP backup group priority of described Master equipment and described Master equipment identical with the VRRP backup group priority of described Backup equipment is greater than the interface IP address of described Backup equipment,
Described Backup equipment is determined not need to send the 2nd Advertisement message, and stops the Advertisement message announcement timer of self, and the Backup state is arrived in state transition.
Determine that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message, specifically comprise:
If the VRRP backup group priority of described Master equipment is 0, perhaps,
The VRRP backup group priority of described Master equipment is lower than the VRRP backup group priority of described Backup equipment, perhaps,
The VRRP backup group priority of described Master equipment and interface IP address described Master equipment identical with the VRRP backup group priority of described Backup equipment is not more than the interface IP address of described Backup equipment,
Described Backup equipment determines to need to send the 2nd Advertisement message.
The invention provides a kind of transmitting apparatus of message, be applied to comprise in the VRRP backup group of Master equipment and described Backup equipment as Backup equipment, also comprise switch in the system that described VRRP backup group is used, when described Master equipment from Master state transition to the Backup state, to the Master state, this equipment comprises described Backup equipment from Backup state transition:
Receiver module is used to receive the Advertisement message from described Master equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message;
Determination module is used for determining that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message;
Sending module, be used for when determination module determines that needs send the 2nd Advertisement message, send described the 2nd Advertisement message to described switch, the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group; So that described switch according to the source MAC of described the 2nd Advertisement message with the virtual mac learning of described VRRP backup group to the port that connects described Backup equipment.
Described receiver module specifically is used to receive the described Advertisement message that described Master equipment sends to described Backup equipment as source MAC with self real mac address.
Described determination module also is used for the VRRP backup group priority of more described Backup equipment and the VRRP backup group priority of described Master equipment;
If the VRRP backup group priority of described Master equipment is higher than the VRRP backup group priority of described Backup equipment, perhaps,
The interface IP address of the VRRP backup group priority of described Master equipment and described Master equipment identical with the VRRP backup group priority of described Backup equipment is greater than the interface IP address of described Backup equipment,
Determining does not need to send the 2nd Advertisement message, and stops local Advertisement message announcement timer, and the Backup state is arrived in state transition.
Described determination module is 0 if specifically be used for the VRRP backup group priority of described Master equipment, perhaps,
The VRRP backup group priority of described Master equipment is lower than the VRRP backup group priority of described Backup equipment, perhaps,
The VRRP backup group priority of described Master equipment and interface IP address described Master equipment identical with the VRRP backup group priority of described Backup equipment is not more than the interface IP address of described Backup equipment,
Determine to need to send the 2nd Advertisement message.
The invention provides a kind of transmitting apparatus of message, be applied to comprise in the VRRP backup group of described Master equipment and Backup equipment as Master equipment, also comprise switch in the system that described VRRP backup group is used, when described Master equipment from Master state transition to the Backup state, to the Master state, this equipment comprises described Backup equipment from Backup state transition:
Sending module is used for sending an Advertisement message to described Backup equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message; Send described two Advertisement message according to the VRRP backup group priority of described Master equipment to described switch by described Backup equipment, the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group.
Described sending module specifically is used for sending a described Advertisement message as source MAC to described Backup equipment with the real mac address of self.
Compared with prior art, the present invention has the following advantages at least:
Guarantee that VRRP backup group flow when state switches does not interrupt, thereby solved the network cutout problem that the VRRP backup group occurs when state switches, and realize the purpose of router redundancy backup; And processing after improving and VRRP agreement are compatible fully, the equipment interconnection problem can not occur.
Description of drawings
Fig. 1 is single router networking schematic diagram in the prior art;
Fig. 2 is a VRRP networking schematic diagram in the prior art;
Fig. 3 is the sending method flow chart of a kind of message provided by the invention;
Fig. 4 is the transmitting apparatus structure chart of a kind of message of proposing of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing.
The present invention proposes a kind of sending method of message, this method is applied to comprise in the system of switch, terminal and VRRP backup group, at least comprise Master equipment and Backup equipment in this VRRP backup group, wherein, this terminal is connected with switch, and this switch is connected with the VRRP backup group, when terminal need send data, at first send the data to switch, according to the virtual mac address of VRRP backup group these data are sent to the VRRP backup group by switch.For example, when virtual mac address was learnt on the port of Backup equipment, switch sent the data to the Backup equipment in the VRRP backup group; When virtual mac address was learnt on the port of Master equipment, switch sent the data to the Master equipment in the VRRP backup group.
Among the present invention, this Master equipment from Master state transition to the Backup state, this Backup equipment from Backup state transition to the Master state.
In this case, the processing procedure of Master equipment (being the Master equipment before the state transition) comprising: (1) receives the Advertisement message that Backup equipment sends; (2) compare opposite end and local priority, find that opposite end priority is higher than local terminal, arrives the Backup state with state transition; (3) virtual IP address and the virtual MAC in the deletion local device.
After the Master_Down_Timer of Backup equipment (being the Master equipment after the state transition) was overtime, corresponding processing procedure comprises: (1) Backup equipment sent the Advertisement message; (2) virtual IP address and the virtual MAC with virtual router sends the gratuitous ARP request; (3) the Master state is arrived in state transition; (4) virtual IP address and virtual MAC are set in this equipment; (5) with virtual MAC as source MAC, according to Advertisement notification time timed sending Advertisement message.
Based on the disposition of above-mentioned Master equipment and Backup equipment, when Master equipment completion status was moved, as shown in Figure 3, the sending method of this message may further comprise the steps:
The one Advertisement message with the actual MAC of interface (being the MAC Address of Master equipment) as source MAC, and the VRRP backup group priority of having carried Master equipment.It should be noted that, because Master equipment has been moved to the Backup state, need then to guarantee that switch no longer sends the data of terminal by this Master equipment, be Master equipment do not need transmission source address be virtual MAC an Advertisement message (if transmission source address is the Advertisement message of virtual MAC, then can cause switch with virtual mac learning to Master equipment).
Among the present invention, Master equipment also need send an Advertisement message of the VRRP backup group priority of having carried Master equipment with the interface real mac address (after promptly executing above-mentioned 3 kinds of processing) on the basis of above-mentioned 3 kinds of processing procedures to Backup equipment as source MAC.
Among the present invention, Backup equipment when the Advertisement message that receives from Master equipment, also needs to carry out the subsequent step among the present invention on the basis of above-mentioned 5 kinds of processing procedures.
Concrete, Backup equipment passes through to compare the VRRP backup group priority of Backup equipment and the VRRP backup group priority of Master equipment; If the VRRP backup group priority of Master equipment is higher than the VRRP backup group priority of Backup equipment, perhaps, the interface IP address of the VRRP backup group priority of Master equipment and Master equipment identical with the VRRP backup group priority of Backup equipment is greater than the interface IP address of Backup equipment, and then execution in step 305.
Further, Backup equipment is according to the VRRP backup group priority of Master equipment, if the VRRP backup group priority of Master equipment is 0, perhaps, the VRRP backup group priority of Master equipment is lower than the VRRP backup group priority of Backup equipment, perhaps, the VRRP backup group priority of Master equipment and interface IP address Master equipment identical with the VRRP backup group priority of Backup equipment is not more than the interface IP address of Backup equipment, and then execution in step 304.
Wherein, the source MAC of the 2nd Advertisement message is the virtual MAC of this VRRP backup group.
Concrete, the Layer 2 switch that Backup equipment needs to hang downwards sends the 2nd Advertisement message, after Layer 2 switch receives the 2nd Advertisement message, then Layer 2 switch can according to the source MAC of the 2nd Advertisement message with the virtual mac learning of VRRP backup group to the port that connects Backup equipment, guaranteeing that Layer 2 switch sends corresponding message (being the message that terminal need send to network) from the port of correct Backup equipment, and can not cause the interruption of flow.
After this step, Backup equipment also needs the Advertisement message announcement timer of local terminal of resetting, and restarts new timing.
Further, Backup equipment also needs to stop local Advertisement message announcement timer, the Backup state is arrived in state transition, and send three Advertisement message as source MAC to Master equipment with the interface real mac address.
Based on the inventive concept same with said method, the invention allows for a kind of transmitting apparatus of message, be applied to comprise in the VRRP backup group of Master equipment and described Backup equipment as Backup equipment, also comprise switch in the system that described VRRP backup group is used, when described Master equipment from Master state transition to the Backup state, to the Master state, as shown in Figure 4, this equipment comprises described Backup equipment from Backup state transition:
Receiver module 41 is used to receive the Advertisement message from described Master equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message;
Determination module 42 is used for determining that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message;
Sending module 43, be used for when determination module 42 determines that needs send the 2nd Advertisement message, described switch sends described the 2nd Advertisement message, and the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group; So that described switch according to the source MAC of described the 2nd Advertisement message with the virtual mac learning of described VRRP backup group to the port that connects described Backup equipment.
Described receiver module 41 specifically is used to receive the described Advertisement message that described Master equipment sends to described Backup equipment as source MAC with self real mac address.
Described determination module 42 also is used for the VRRP backup group priority of more described Backup equipment and the VRRP backup group priority of described Master equipment;
If the VRRP backup group priority of described Master equipment is higher than the VRRP backup group priority of described Backup equipment, perhaps,
The interface IP address of the VRRP backup group priority of described Master equipment and described Master equipment identical with the VRRP backup group priority of described Backup equipment is greater than the interface IP address of described Backup equipment,
Determining does not need to send the 2nd Advertisement message, and stops local Advertisement message announcement timer, and the Backup state is arrived in state transition.
Described determination module 42 is 0 if specifically be used for the VRRP backup group priority of described Master equipment, perhaps,
The VRRP backup group priority of described Master equipment is lower than the VRRP backup group priority of described Backup equipment, perhaps,
The VRRP backup group priority of described Master equipment and interface IP address described Master equipment identical with the VRRP backup group priority of described Backup equipment is not more than the interface IP address of described Backup equipment,
Determine to need to send the 2nd Advertisement message.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Based on the inventive concept same with said method, the invention allows for a kind of transmitting apparatus of message, be applied to comprise in the VRRP backup group of described Master equipment and Backup equipment as Master equipment, also comprise switch in the system that described VRRP backup group is used, when described Master equipment from Master state transition to the Backup state, to the Master state, this equipment comprises described Backup equipment from Backup state transition:
Sending module is used for sending an Advertisement message to described Backup equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message; Send described two Advertisement message according to the VRRP backup group priority of described Master equipment to described switch by described Backup equipment, the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group.
Described sending module specifically is used for sending a described Advertisement message as source MAC to described Backup equipment with the real mac address of self.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of 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, module in the 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 among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (10)
1. the sending method of a message, be applied to comprise in the system of switch and VRRP backup group, at least comprise Master equipment and Backup equipment in the described VRRP backup group, it is characterized in that, when described Master equipment from Master state transition to the Backup state, to the Master state, this method may further comprise the steps described Backup equipment from Backup state transition:
Described Backup equipment receives the Advertisement message from described Master equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message;
When determining that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message, described Backup equipment sends the 2nd Advertisement message to described switch, and the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group; So that described switch according to the source MAC of described the 2nd Advertisement message with the virtual mac learning of described VRRP backup group to the port that connects described Backup equipment.
2. the method for claim 1 is characterized in that, described Backup equipment receives the Advertisement message from described Master equipment, also comprises before:
Described Master equipment sends a described Advertisement message as source MAC to described Backup equipment with the real mac address of self.
3. the method for claim 1 is characterized in that, determines that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message, also comprise before:
The VRRP backup group priority of the more described Backup equipment of described Backup equipment and the VRRP backup group priority of described Master equipment;
If the VRRP backup group priority of described Master equipment is higher than the VRRP backup group priority of described Backup equipment, perhaps,
The interface IP address of the VRRP backup group priority of described Master equipment and described Master equipment identical with the VRRP backup group priority of described Backup equipment is greater than the interface IP address of described Backup equipment,
Described Backup equipment is determined not need to send the 2nd Advertisement message, and stops the Advertisement message announcement timer of self, and the Backup state is arrived in state transition.
4. the method for claim 1 is characterized in that, determines that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message, specifically comprise:
If the VRRP backup group priority of described Master equipment is 0, perhaps,
The VRRP backup group priority of described Master equipment is lower than the VRRP backup group priority of described Backup equipment, perhaps,
The VRRP backup group priority of described Master equipment and interface IP address described Master equipment identical with the VRRP backup group priority of described Backup equipment is not more than the interface IP address of described Backup equipment,
Described Backup equipment determines to need to send the 2nd Advertisement message.
5. the transmitting apparatus of a message, be applied to comprise in the VRRP backup group of Master equipment and described Backup equipment as Backup equipment, also comprise switch in the system that described VRRP backup group is used, it is characterized in that, when described Master equipment from Master state transition to the Backup state, to the Master state, this equipment comprises described Backup equipment from Backup state transition:
Receiver module is used to receive the Advertisement message from described Master equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message;
Determination module is used for determining that according to the VRRP backup group priority of described Master equipment needs send the 2nd Advertisement message;
Sending module, be used for when determination module determines that needs send the 2nd Advertisement message, send described the 2nd Advertisement message to described switch, the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group; So that described switch according to the source MAC of described the 2nd Advertisement message with the virtual mac learning of described VRRP backup group to the port that connects described Backup equipment.
6. equipment as claimed in claim 5 is characterized in that,
Described receiver module specifically is used to receive the described Advertisement message that described Master equipment sends to described Backup equipment as source MAC with self real mac address.
7. equipment as claimed in claim 5 is characterized in that,
Described determination module also is used for the VRRP backup group priority of more described Backup equipment and the VRRP backup group priority of described Master equipment;
If the VRRP backup group priority of described Master equipment is higher than the VRRP backup group priority of described Backup equipment, perhaps,
The interface IP address of the VRRP backup group priority of described Master equipment and described Master equipment identical with the VRRP backup group priority of described Backup equipment is greater than the interface IP address of described Backup equipment,
Determining does not need to send the 2nd Advertisement message, and stops local Advertisement message announcement timer, and the Backup state is arrived in state transition.
8. equipment as claimed in claim 5 is characterized in that,
Described determination module is 0 if specifically be used for the VRRP backup group priority of described Master equipment, perhaps,
The VRRP backup group priority of described Master equipment is lower than the VRRP backup group priority of described Backup equipment, perhaps,
The VRRP backup group priority of described Master equipment and interface IP address described Master equipment identical with the VRRP backup group priority of described Backup equipment is not more than the interface IP address of described Backup equipment,
Determine to need to send the 2nd Advertisement message.
9. the transmitting apparatus of a message, be applied to comprise in the VRRP backup group of described Master equipment and Backup equipment as Master equipment, also comprise switch in the system that described VRRP backup group is used, it is characterized in that, when described Master equipment from Master state transition to the Backup state, to the Master state, this equipment comprises described Backup equipment from Backup state transition:
Sending module is used for sending an Advertisement message to described Backup equipment; Carried the VRRP backup group priority of described Master equipment in the described Advertisement message; Send described two Advertisement message according to the VRRP backup group priority of described Master equipment to described switch by described Backup equipment, the source MAC of described the 2nd Advertisement message is the virtual MAC of described VRRP backup group.
10. equipment as claimed in claim 9 is characterized in that,
Described sending module specifically is used for sending a described Advertisement message as source MAC to described Backup equipment with the real mac address of self.
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