CN100574249C - virtual router redundancy protocol message transmission method and device - Google Patents
virtual router redundancy protocol message transmission method and device Download PDFInfo
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Abstract
The invention provides a kind of Virtual Router Redundancy Protocol (VRRP) message transmitting method, this method comprises: for the total interface on the network equipment is provided with the transmitting-receiving attribute, wherein, the attribute of the interface that is connected with the VRRP router on the network equipment is set to allow transmitting-receiving VRRP message, and the attribute of other interface is set to forbid receiving the VRRP message on the network equipment; After the described network equipment is received the VRRP message from its own interfaces, the VRRP message of receiving is handled according to the interface attributes that is provided with.In addition, the present invention also provides a kind of VRRP message transmitting device.Adopt technical scheme provided by the present invention, can strengthen the fail safe of VRRP agreement, guarantee the normal forwarding of user data, avoid the generation of abnormal conditions such as customer traffic disruption.And further, the present invention can also reduce the VRRP message to the taking of Internet resources, and promotes the overall performance of network.
Description
Technical field
The present invention relates to data transmission control technology, relate in particular to Virtual Router Redundancy Protocol (VRRP, Virtual Router Redundancy Protocol) message transmitting method and device.
Background technology
Universal day by day along with the internet, people are more and more stronger to the dependence of network, and are meanwhile, also more and more higher to the demand of network reliability.In existing network system,, adopt the VRRP agreement to realize switching between the active and standby router for continuity and the reliability that guarantees communication more.The VRRP agreement guarantees can be replaced by another router that is in Status of Backups in time when the next hop router of main frame breaks down, thereby automatically recovers professional as early as possible.
Figure 1 shows that the classical group web frame schematic diagram of VRRP.The basic functional principle of VRRP agreement is described: the collaborative work of one group of VRRP router below in conjunction with Fig. 1, virtual router of common formation, this virtual router externally shows as a router logic with unique Internet protocol (IP) address and medium access control (MAC) address; In constituting one group of VRRP router of virtual router, have only one to be active router (Master), other all is backup router (Backup), at any time, have only active router be responsible for network in miscellaneous equipment carry out data interaction.
Only defined a kind of message---VRRP message among the VRRP, it is a kind of multicast message, regularly sends its existence of announcement by active router, uses these messages not only can detect the various parameters of virtual router, can also be used for the election of active router.When the active router operate as normal, it can send a VRRP message at set intervals, and to notify other backup router, active router is in normal operating conditions.If backup router does not receive the VRRP message from active router for a long time, determine that then active router breaks down, backup router switches to the main state of using with oneself state.When having a plurality of backup router in the virtual router, might produce a plurality of active routers, at this moment, can redefine an active router by the priority of each active router relatively, and by this active router that redefines be responsible for network in miscellaneous equipment carry out data interaction.
But in the real network environment, some disabled user may forge the VRRP message, and sends pseudo-VRRP message and attack active router, makes the active router can't operate as normal, can not carry out the forwarding of user data message, thereby cause the interruption of customer flow.That is to say that the fail safe of VRRP agreement can't be ensured reliably.And, after being subjected to rogue attacks, in order to recover proper communication, need the network manager in time network state to be investigated, to find out solution.But the mode of this artificial investigation operates comparatively complicated, and efficient is comparatively low, and also higher to network manager's specification requirement.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of VRRP message transmitting method and device, strengthens the fail safe of VRRP agreement by a kind of mode of simple and effective.
For achieving the above object, VRRP message transmitting method provided by the invention is as follows:
For the total interface on the network equipment is provided with the transmitting-receiving attribute, wherein, the attribute of the interface that is connected with the VRRP router on the network equipment is set to allow transmitting-receiving VRRP message, and the attribute of other interface is set to forbid receiving the VRRP message on the network equipment;
After the described network equipment is received the VRRP message from its own interfaces, the VRRP message of receiving is handled according to the interface attributes that is provided with.
When described interface attributes is received and dispatched the VRRP message for permission,
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and comprised: network equipment dependency is directly handled in this locality or the VRRP message of receiving is forwarded for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message.
When described interface attributes when forbidding receiving the VRRP message,
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and is comprised: network equipment dependency be forbid receiving receive the VRRP message on the interface of VRRP message after, directly make discard processing.
This method further comprises: the attribute of other interface is set to allow to send the VRRP message on the described network equipment;
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and is comprised:
When the described network equipment was the VRRP router, described network equipment dependency was directly handled in this locality for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message;
When the described network equipment is two forwarding units between the VRRP router, described network equipment dependency is transmitted to other described attribute the VRRP message of receiving for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message for the interface that allows to send the VRRP message.
This method further comprises: the attribute of other interface is set to forbid sending the VRRP message on the described network equipment;
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and comprised: network equipment dependency is for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message, forbids to described attribute being to forbid that the interface that sends the VRRP message transmits the VRRP message of receiving.
The described network equipment comprises before according to the interface attributes that is provided with the VRRP message of receiving being handled:
The network equipment judges whether the message of receiving is the VRRP message, if then according to the interface attributes that is provided with the VRRP message of receiving is handled.
The described network equipment judges that whether the message received comprises for the VRRP message:
The network equipment judges according to type of message entrained in the message of receiving or purpose IP address or target MAC (Media Access Control) address whether the message of receiving is the VRRP message.
The described network equipment is another VRRP router that is connected with described VRRP router, perhaps is two forwarding units between the VRRP router.
VRRP message transmitting device provided by the invention comprises: message process unit and at least one interface, wherein,
Message process unit, be used to described interface that the transmitting-receiving attribute is set, wherein, the attribute of the interface that is connected with the VRRP router is set to allow transmitting-receiving VRRP message, the attribute of other interface is set to forbid receiving the VRRP message, and according to the interface attributes that is provided with the VRRP message of receiving from interface is handled.
Described message process unit is further used for judging whether the message of receiving is the VRRP message, and after judging the VRRP message, according to the interface attributes that is provided with the VRRP message of receiving is handled or forwarded or directly abandon in this locality.
This shows that the present invention has following beneficial effect:
1) attribute by the interface that is connected with the VRRP router on the network equipment is set to allow transmitting-receiving VRRP message, and the attribute of other interface is set to forbid receiving the VRRP message, the illegal VRRP packet filtering that can automatically the hacker be sent is fallen, and prevents the attack of illegal VRRP message.Thereby strengthened the fail safe of VRRP agreement, guaranteed the normal forwarding of user data, avoided the generation of abnormal conditions such as customer traffic disruption.And whole process need not artificial participation, implements very simple and efficiently, and the network manager is not had higher specification requirement yet.
2) for not having the interface that is connected with the VRRP router on the network equipment, when its attribute was set to forbid receiving the VRRP message, further this interface attributes was set to forbid sending the VRRP message.So just the transmission of VRRP message can be limited in the particular network scope, make the VRRP message only between the VRRP router of forming virtual router, propagate, and on other interface, do not transmit.Thereby reduced the VRRP message to the taking of Internet resources, the equipment in the network also need not all to carry out the VRRP message and handles, and has promoted the overall performance of network.
3) technical scheme provided by the present invention not only can realize that also the depended software mode realizes fully, does not need to expend very high hardware resource cost, can save maintenance cost based on the ACL hardware technology.
Description of drawings
Fig. 1 is a VRRP classical group web frame schematic diagram of the prior art.
Fig. 2 is that the VRRP message in the embodiment of the invention is transmitted schematic diagram.
Fig. 3 is the VRRP message transmitting device structural representation in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings is described in further detail the present invention.
The basic thought of the VRRP message transmitting method that provides of the present invention is: for the total interface on the network equipment is provided with the transmitting-receiving attribute, wherein, the attribute of the interface that is connected with the VRRP router on the network equipment is set to allow transmitting-receiving VRRP message, and the attribute of other interface is set to forbid receiving the VRRP message on the network equipment; After the described network equipment is received the VRRP message from its own interfaces, the VRRP message of receiving is handled according to the interface attributes that is provided with.
Wherein, the described network equipment both can be another VRRP router that is connected with the VRRP router, also can be the forwarding unit between two VRRP routers.
If the network equipment is the VRRP router, then promptly allow to send and receive the VRRP message of receiving on the interface of VRRP message for allowing transmitting-receiving VRRP message for dependency, the VRRP router is directly handled the VRRP message of receiving in this locality.If the network equipment is a forwarding unit, then for the VRRP message of dependency for receiving on the interface that allows transmitting-receiving VRRP message, forwarding unit need forward the VRRP message of receiving from the interface that other allows to send the VRRP message.
For dependency is to forbid receiving the VRRP message of receiving on the interface of VRRP message, no matter is VRRP router or forwarding unit, all directly makes discard processing, that is to say, neither transmits to miscellaneous equipment, does not also handle at local cpu.
For ease of understanding better, by an object lesson VRRP message transmitting method provided by the invention is elaborated below in conjunction with Fig. 2.
Figure 2 shows that the VRRP message forwarding schematic diagram in the embodiment of the invention.In Fig. 2, comprise that two VRRP routers are active router Master and backup router Backup, and a forwarding unit---switch, in addition, also comprise main frame, hacker (Hacker) and other network equipment.Wherein, the attribute of the interface 4 that the interface 2 that the interface 1 that Master is connected with Backup by switch, Backup are connected with Master by switch, the interface 3 that switch is connected with Master and switch are connected with Backup all is set to trust (Trust), promptly allows transmitting-receiving VRRP message; In addition, the attribute of other interface of switch, Master and Backup all is set to distrust (Untrust), promptly forbids receiving the VRRP message.For the interface of Trust attribute, it not only can carry out the transmission of VRRP message, can also carry out the reception of VRRP message.And for the interface of Untrust attribute, when it is set to forbid receiving the VRRP message, it can also be arranged to allow to send the VRRP message or forbid sending the VRRP message.
By VRRP message forwarding path shown in Figure 2 as seen, Master will arrive switch through interface 3 from the VRRP message that interface 1 sends out, switch receives that the back is transmitted to Backup by interface 4 with the VRRP message of receiving, thereby has realized the propagation of VRRP message between each VRRP router of forming virtual router.And for the interface of other Untrust attribute, can be chosen in according to the difference that is provided with and to transmit or not transmit the VRRP message on these interfaces.Such as, if the interface of all Untrust attributes all is set to allow to send the VRRP message, then Master also needs the VRRP message is sent to the hacker who is connected with self, and the VRRP message that switch also needs to receive is transmitted to connected hacker, main frame and other network equipment.
If the interface of all Untrust attributes all is set to forbid sending the VRRP message, then Master only needs to send the VRRP message to switch, switch also only needs to transmit the VRRP message to Backup and gets final product, and need not to transmit the VRRP message to hacker, main frame and other network equipment.So just the transmission of VRRP message can be limited in the particular network scope, make the VRRP message only between the VRRP router of forming virtual router, propagate, and on other interface, do not transmit.Thereby reduced the VRRP message to the taking of Internet resources, the situation of having avoided each equipment in the network all to need to handle the VRRP message takes place, and has promoted the overall performance of network.
And for the interface of Untrust attribute, because they have been arranged to forbid receiving the VRRP message, therefore, all will directly be abandoned from the VRRP message that these interfaces come.Can prevent that like this hacker from constructing illegal VRRP message and attacking the VRRP router device, thereby strengthen the fail safe of VRRP agreement, guarantee the normal forwarding of user data, avoid the generation of abnormal conditions such as customer traffic disruption.
In addition, because the type of message that transmits in the network is more, it is a kind of to be not limited to the VRRP message, therefore, before the network equipment is carried out respective handling according to the interface attributes that sets in advance to the VRRP message, need at first to judge whether the message of receiving is the VRRP message, if just the VRRP message of receiving is handled according to the interface attributes that is provided with; Otherwise, transmit by the normal message flow process.Wherein, the network equipment can judge directly whether this message is the VRRP message according to type of message entrained in the message of receiving, perhaps waits according to the purpose IP address of carrying in the message or target MAC (Media Access Control) address and judges whether the message of receiving is the VRRP message.
About the setting of interface attributes, can realize by some technological means commonly used.Such as, be the basis with Access Control List (ACL) (ACL, Acess Control List) technology, by network device interface configuration acl rule being limited the transmission of VRRP message; Perhaps, complete depended software implementation, configuration is in order to the interface attributes list item of each interface transmitting-receiving attribute of the record network equipment on the network equipment, after the network equipment is received the VRRP message from interface, the VRRP message of receiving is handled by the transmitting-receiving attribute of consulting the corresponding interface that writes down in the interface attributes list item.
Correspondingly, the present invention also provides a kind of VRRP message transmitting device, and its concrete structure mainly comprises referring to shown in Figure 3: message process unit and at least one interface.Wherein, message process unit, be used to described interface that the transmitting-receiving attribute is set, wherein, the attribute of the interface that is connected with the VRRP router is set to allow transmitting-receiving VRRP message, the attribute of other interface is set to forbid receiving the VRRP message, and according to the interface attributes that is provided with the VRRP message of receiving from interface is handled.
Described message process unit can be further used for also judging whether the message of receiving is the VRRP message, and after judging the VRRP message, according to the interface attributes that is provided with the VRRP message of receiving is handled or forwarded or directly abandon in this locality.
The above has carried out further detailed description to purpose of the present invention, technical scheme and beneficial effect; institute is understood that; the above is not in order to restriction the present invention; within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of Virtual Router Redundancy Protocol VRRP message transmitting method is characterized in that, comprising:
For the total interface on the network equipment is provided with the transmitting-receiving attribute, wherein, the attribute of the interface that is connected with the VRRP router on the network equipment is set to allow transmitting-receiving VRRP message, and the attribute of other interface is set to forbid receiving the VRRP message on the network equipment;
After the described network equipment is received the VRRP message from its own interfaces, the VRRP message of receiving is handled according to the interface attributes that is provided with.
2, method according to claim 1 is characterized in that, when described interface attributes is received and dispatched the VRRP message for permission,
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and comprised: network equipment dependency is directly handled in this locality or the VRRP message of receiving is forwarded for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message.
3, method according to claim 1 is characterized in that, when described interface attributes when forbidding receiving the VRRP message,
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and is comprised: network equipment dependency be forbid receiving receive the VRRP message on the interface of VRRP message after, directly make discard processing.
4, method according to claim 1 is characterized in that, this method further comprises: the attribute of other interface is set to allow to send the VRRP message on the described network equipment;
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and is comprised:
When the described network equipment was the VRRP router, described network equipment dependency was directly handled in this locality for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message;
When the described network equipment is two forwarding units between the VRRP router, described network equipment dependency is transmitted to other described attribute the VRRP message of receiving for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message for the interface that allows to send the VRRP message.
5, method according to claim 1 is characterized in that, this method further comprises: the attribute of other interface is set to forbid sending the VRRP message on the described network equipment;
The described network equipment is handled the VRRP message of receiving according to the interface attributes that is provided with and comprised: network equipment dependency is for after receiving the VRRP message on the interface that allows transmitting-receiving VRRP message, forbids to described attribute being to forbid that the interface that sends the VRRP message transmits the VRRP message of receiving.
According to each described method of claim 1 to 5, it is characterized in that 6, the described network equipment comprises before according to the interface attributes that is provided with the VRRP message of receiving being handled:
The network equipment judges whether the message of receiving is the VRRP message, if then according to the interface attributes that is provided with the VRRP message of receiving is handled.
7, method according to claim 6 is characterized in that, the described network equipment judges that whether the message received comprises for the VRRP message:
The network equipment judges according to type of message entrained in the message of receiving or purpose IP address or target MAC (Media Access Control) address whether the message of receiving is the VRRP message.
8, method according to claim 1 is characterized in that, the described network equipment is another VRRP router that is connected with described VRRP router, perhaps is two forwarding units between the VRRP router.
9, a kind of VRRP message transmitting device is characterized in that, comprising: message process unit and at least one interface, wherein,
Message process unit, be used to described interface that the transmitting-receiving attribute is set, wherein, the attribute of the interface that is connected with the VRRP router is set to allow transmitting-receiving VRRP message, the attribute of other interface is set to forbid receiving the VRRP message, and according to the interface attributes that is provided with the VRRP message of receiving from interface is handled.
10, device according to claim 9, it is characterized in that, described message process unit is further used for judging whether the message of receiving is the VRRP message, and after judging the VRRP message, the VRRP message of receiving is handled or forwarded or directly abandon in this locality according to the interface attributes that is provided with.
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| CNB200710097247XA CN100574249C (en) | 2007-04-28 | 2007-04-28 | virtual router redundancy protocol message transmission method and device |
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| CNB200710097247XA CN100574249C (en) | 2007-04-28 | 2007-04-28 | virtual router redundancy protocol message transmission method and device |
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| CN100574249C true CN100574249C (en) | 2009-12-23 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242254B (en) * | 2008-02-26 | 2011-03-16 | 中兴通讯股份有限公司 | Virtual redundant router system and method for transmitting virtual redundant routing protocol packet |
| CN101572675B (en) * | 2009-06-23 | 2012-01-04 | 杭州华三通信技术有限公司 | Method for finding operating VRRP network equipment in directly connected network segment and device thereof |
| CN101741742B (en) * | 2009-12-18 | 2012-01-04 | 华为技术有限公司 | Message processing method, access equipment and communication system |
| CN101951345B (en) * | 2010-10-15 | 2013-06-05 | 杭州华三通信技术有限公司 | Message transmitting method and equipment |
| CN102546430A (en) * | 2012-02-05 | 2012-07-04 | 华为技术有限公司 | Method for redundant backup of network equipment, and routing equipment and system |
| CN102868606B (en) * | 2012-09-27 | 2016-06-29 | 华为技术有限公司 | Method, primary route device and the system that VRRP heartbeat message sends |
| CN102891798B (en) * | 2012-09-28 | 2016-06-22 | 华为技术有限公司 | heartbeat message transmission method and device |
| US9749220B2 (en) * | 2014-09-19 | 2017-08-29 | Telefonaktiebolaget L M Ericsson (Publ) | Automated determination of tree attributes and assignment of receiver identifiers by distributed election in multicast architectures relying on packets identifying intended receivers |
| CN104601465B (en) * | 2015-01-05 | 2018-05-08 | 新华三技术有限公司 | A kind of processing method and equipment of VRRP messages |
| CN110475272A (en) * | 2019-07-31 | 2019-11-19 | 苏州星际靶战网络信息技术有限公司 | A kind of virtualization network equipment library information transferring method and system |
| CN112511419B (en) * | 2020-11-06 | 2023-06-13 | 北京东土军悦科技有限公司 | Distributed forwarding system |
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