CN1848841A - Route equipment backup method - Google Patents
Route equipment backup method Download PDFInfo
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- CN1848841A CN1848841A CN 200510063191 CN200510063191A CN1848841A CN 1848841 A CN1848841 A CN 1848841A CN 200510063191 CN200510063191 CN 200510063191 CN 200510063191 A CN200510063191 A CN 200510063191A CN 1848841 A CN1848841 A CN 1848841A
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Abstract
A method for backing up route device includes setting route device two ports connected to the same local network to be main port and backup port, configuring the same parameter in influencing service on two said ports and configuring Internet protocol IP address for port providing route service, switching over IP address on main port to backup port and updating route list when fault at main port is detected out by route device.
Description
Technical field
The present invention relates to the backup method of the network equipment in Communications And Computer field, relate in particular to a kind of backup method of routing device.
Background technology
Along with the development of data communication, daily production and life are more and more stronger to the dependence of network, and this has just proposed requirement to the reliability of network.And the availability of the network equipment has played conclusive effect to the reliability of network.In order to improve the availability of the network equipment, prevent from that a certain equipment, a certain veneer from breaking down to cause the interruption of whole communication link that main at present what adopt is redundancy technique.
For route equipment, there are two kinds of technology can realize backup at present, a kind of is VRRP agreement (Virtual Router Redundancy Protocol, virtual routing device redundancy protocol), another kind is the privately owned HSRP agreement of Cisco company (Hot Standby Redundancy Protocol, a hot-standby redundancy agreement).These two kinds of agreements are moved between many routing devices, realize identical functions, and next that promptly guarantee the main frame route jumped routing device when breaking down, and main frame still can proper communication.
The VRRP agreement is to grow up on the basis of HSRP agreement, and VRRP has simplified the operating mechanism of HSRP, has reduced owing to the extra load that provides redundancy feature to bring to network as far as possible, and the realization principle of these two kinds of agreements is substantially the same.Be the realization principle that example illustrates many route equipment backups with the VRRP agreement below.
See also Fig. 1, two routing devices 121 and 122 are for main frame 111,112 and 113 is provided to the route service of external network, and main frame 111,112 and 113 belongs to same local area network (LAN), and are connected by Ethernet between two routing devices.The IP of the port that routing device 121 is connected with this local area network (LAN) (InternetProtocol, Internet protocol) address is 10.100.10.2, and the IP address of the port that routing device 122 is connected with this local area network (LAN) is 10.100.10.3.
VRRP is organized into a virtual routing device 123 with routing device 121 and 122, also is referred to as a backup group, and wherein routing device 121 is Master (main road is by equipment), and routing device 122 is Backup (standby routing equipment).Virtual routing device 123 has the IP address 10.100.10.1 of oneself, and this IP address can be identical with the interface IP address of certain routing device in the backup group.Main frame 111,112,113 its default routes in the local area network (LAN) are set to the IP address 10.100.10.1 of this virtual routing device 123, so main frame 111,112,113 just communicates with external network by virtual routing device 123.
For the backup group of virtual routing device 123, then need to carry out following work:
Provide actual route service by the Master in the backup group;
Backup monitors the state of Master at any time, when the Master operate as normal, sends an Advertisement (notice) message at set intervals, is in normal operating conditions with the Backup Master in the group of notifications.Backup in group does not receive the message from Master in the given time, then transfers oneself to Master.
VRRP agreement and HSRP agreement have well solved the backup between the routing device.But, for small-sized local area network (LAN), only can use one on the routing device usually to two ports, and vacant other ports.In this case, guarantee that with two routing devices next redirect sends out normally that not only cost is too high, and can cause the bigger waste of port resource.If only use a routing device, when employed port breaks down, but can't guarantee the availability of network.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of backup method of routing device, only adopt a routing device, when employed port breaks down, still can provide continual route service, when not increasing user cost, realize higher availability, and guarantee the port utilization ratio of routing device.
The backup method of routing device of the present invention may further comprise the steps:
A) two ports that are connected to same local area network (LAN) on the routing device are set to master port and backup port;
B) be the identical parameters that influence routing service of described two port arrangement, for the port arrangement Internet protocol IP address of routing service wherein is provided;
C) when routing device detects master port and breaks down, the IP address switchover of master port to backup port, and is upgraded routing table.
Preferably, the described IP address switchover with master port of step c) is specially to backup port:
C1) judge whether backup port is in state working properly, if change step c2; If not, do not process;
C2) add described IP address on the backup port to the IP address of deletion master port;
C3) send the free address resolution protocol notice message of constructing with the media control protocol MAC Address of described IP address and backup port.
Preferably, after step c), also comprise:
D) after routing device detects master port and is in state working properly, the IP address switchover of former master port is returned on the master port, and upgrade routing table.
Preferably, the described IP address switchover with former master port of step d) returns on the master port and is specially:
D1) the IP address of former master port on the deletion backup port is for master port disposes described IP address;
D2) send the free address resolution protocol notice message of constructing with the MAC Address of described IP address and master port.
Preferably, comprise between step b) and the step c): routing device regularly detects master port and whether is in state working properly;
Comprise between step c) and the step d): routing device regularly detects the master port normal condition of whether resuming work.
Preferably, describedly whether port is in method that state working properly detects comprises link is detected: send the arp request message to node online in the described local area network (LAN) by detected port; Judge whether receive response message in the given time, if then described port is in state working properly; If not, then described port breaks down.
Preferably, describedly whether port is in method that state working properly detects comprises physical connection is detected: judge whether detected port is in state of activation, if then described port is in state working properly; If not, then described port breaks down.
Preferably, described two ports of the step a) mode that is set to master port and backup port comprises one of following:
One provides the port of routing service to be set to master port, and another idle port is set to backup port;
One provides the port of routing service to be set to master port, and another provides the port of routing service to be set to backup port;
Two provide the port of routing service to be set to master port and backup port each other.
Preferably, the described parameter that influences routing service of step b) comprises Access Control List (ACL), service quality and multicast group.
Preferably, described master port has identical bandwidth with backup port.
By being master port configuration backup port, when detecting master port and break down, take over the route work of master port by backup port, the present invention has realized same the backup between the routing device upper port, make the fault of port can not influence the normal operation of network, when not increasing user cost, realized higher availability, and routing device has port utilization ratio identical when not backing up.
Description of drawings
Figure 1 shows that the schematic network structure of route equipment backup in the prior art;
Figure 2 shows that the schematic network structure of backup method of the present invention;
Figure 3 shows that the flow chart of backup method of the present invention.
Embodiment
For the recovery capability of port failure is provided under the condition that does not increase routing device, the present invention has adopted the method for port backup.With the port that important routing service is provided is master port, is backup port of its configuration, and when master port broke down, backup port can be taken over the routing service of master port automatically, made important business can not interrupt because of the fault of master port.
Fig. 2 is the schematic network structure of the method for the invention.Among Fig. 2, routing device 230 has four ports, and its middle port 243,244 is connected to external network, and port 241 is connected to switch 221, and port 242 is connected to switch 222.Main frame 211 is by switch 221 access networks, and main frame 213,214 is by switch 222 access networks.The network equipment 212 is connected to switch 221, by routing device 230 visit external networks.The network equipment 212 can be other switching equipment, also can be the routing device that is connected with other subnets.Be connected to each other between the switch 221 and 222, above-mentioned various device has been formed a local area network (LAN).
Main frame 211,213 and 214 can be on same subnet, also can be on different subnets.When the local area network (LAN) among Fig. 2 included only a subnet, the port 241 of routing device 230 and 242 can be worked simultaneously, also can one in running order and another free time.When if the subnet that the port 241 and 242 of routing device 230 is respectively different provides routing service, then two ports are simultaneously in running order.Port backup method of the present invention both can have been realized the backup of idle port to service port, also can realize the backup between the service port.
Figure 3 shows that flow chart of the present invention.In step S10, two ports that are connected to same local area network (LAN) on the routing device are set to master port and backup port, constitute a backup group.
Because backup port will be taken over the routing service of master port among the present invention when master port breaks down, thereby backup port should receive the packet that all need be by the master port route, and this just requires master port and backup port must be connected to same local area network (LAN).
After master port broke down, the IP message of handling on it can automatically switch on the backup port, if the bandwidth of two ports differs bigger, the flow of message just can't guarantee.For example, after switching, on 100,000,000 ports, occur congested possibly with 100,000,000 ports backup gigabit port.Therefore, suggestion master port and backup port have same bandwidth.
Backup group can be set to one of following several modes:
Mode A: with the port that routing service is provided is master port, with on the same routing device not the idle port of usefulness as backup port;
Mode B: two ports all provide routing service under normal condition, wherein provide the port of important service to be set to master port, with another port is backup port, all messages are all transmitted through backup port when the master port fault like this, but then must be through the service disconnection of its route during the backup port fault;
Pattern C: two ports all provide routing service under normal condition, and two ports are set to master port and backup port each other, and when one of them port broke down like this, all business were by another port route.
At step S20, be two port arrangement IP addresses and other parameters.Adopt at backup group under the situation of Mode B and pattern C, to be two ports configuration of IP address all, and since two ports in same local area network (LAN), unusual for fear of the forwarding of two layers of exchange, make it have different MAC (MediaAccess Control, medium access control) address.When backup group adopted Mode A, two ports can not worked simultaneously, and identical MAC Address can be arranged, simultaneously also only need be on master port configuration of IP address.
Except IP address and MAC Address, also should be two other parameters of port arrangement.The scope of these parameters and collocation method it should be noted that according to employed routing device and the routing service decision that is provided if master port provides multicast services, backup port should add same multicast group; If dispose the parameter that influences routing service on the master port, as ACL (Access Control List, Access Control List (ACL)), QoS (Quality ofService, service quality) etc., on backup port, also should have identical configuration, to guarantee professional normal operation.
At step S30, routing device regularly detects master port and whether is in normal operating conditions.Detecting the fault detection mechanism whether a port be in normal operating conditions can design according to the actual requirements, includes but not limited to following two kinds:
Detection method 1: whether the link that detects this port is normal, by detected port timed sending ARP (Address Resolution Protocol, address resolution protocol) request message is given online node in the local area network (LAN), if in the given time, this port has been received the arp reply message, thinks that then port is in normal operating conditions; If do not receive the arp reply message, think that then this port breaks down; Wherein online node can be that online main frame, switch ports themselves or other have the equipment of IP address in the local area network (LAN).
Detection method 2: in the ordinary course of things, as long as physical connection is normal, the possibility that breaks down is very little, come detection failure so also can adopt the simplest method, be whether detection port is in state of activation, if think that then port is in normal operating conditions; If not, think that then port breaks down.Whether detection port is in the standard feature that state of activation is a routing device, repeats no more herein.
If routing device detects master port and breaks down, then enter step S40, the master port business is switched on the backup port.As a kind of three-layer switching equipment, the function of routing device is the route of carrying out the IP message, under the situation of a port failure, as long as guarantee normally to transmit by the IP message of this port, just can the assurance business not interrupt.So, after master port breaks down, the IP address switchover of master port to backup port, is upgraded routing table, guarantee professional normal the forwarding.
The master port business is as follows to the concrete steps that backup port switches:
S41: detect backup port and whether be in normal operating conditions, if then carry out address switchover; If not, then do not process;
S42: the deletion master port the IP address, with this IP address switchover to backup port; If be not the backup port configuration of IP address in step S20, then directly dispose this IP address for backup port; If be furnished with the IP address on the backup port,, then this IP address is increased on the backup port, as the auxilliary IP address of backup port because of routing device all is supported in a plurality of IP of configuration address on the port usually;
S43: with the IP address of former master port and the MAC Address structure gratuitous ARP notice message of backup port, send this gratuitous ARP notice message, online node in the notice local area network (LAN) upgrades arp cache, to reduce professional influence of switching node in the local area network (LAN) as much as possible;
S44: upgrade routing table, will be with master port as the routing table entry updating of outgoing interface for being outgoing interface with the backup port; Basically all routing devices all have when the IP address of port changes, and upgrade the function of routing table automatically, so the renewal of routing table can realize automatically usually.
Behind the completing steps S41 to S44, the message of transmitting by master port originally in the local area network (LAN) can be received and finish forwarding capability by backup port; After originally the external network message of transmitting by master port arrives routing device, table of query and routing, the outgoing interface of finding is a backup port, then transmits from backup port, routing service normally carries out, thereby has realized the backup between the port.
After the business switching is finished,, then bearing the traffic carrying capacity of transmitting by two ports under the normal condition this moment on the backup port if backup group adopts Mode B and pattern C.Consider problems of liquid flow, should one by the time master port recover normal operating conditions, just business is switched back master port.This process is realized by step S50 and S60.
At step S50, routing device regularly detects master port and whether recovers normal operating conditions.Identical among fault recovery testing mechanism in this step and the step S30, just the result who waits for is just in time opposite.In concrete the enforcement, the detection method of this step can with step S30 in identical, also can be different.
After routing device detects master port and recovers normal operating conditions, enter step S60, the routing service of former master port is switched back master port, promptly the military order master port regains original IP address, and the renewal routing table, and the concrete steps of this process are as follows:
S61: be the IP address of backup port interpolation among the deletion step S40, and dispose this IP address for master port;
S62: send the gratuitous ARP notice message with the MAC Address structure of this IP address and master port, online node in the notice local area network (LAN) upgrades corresponding ARP list item;
S63: upgrade routing table, the routing table list item of revising among the step S40 is recovered.
Behind the completing steps S61 to S63, the routing service that master port recovers before the fault is transmitted, and backup port also returns to the working condition before the fault.
As seen, the invention process is very convenient, is breaking down or during fault recovery, only need carry out address transfer, can guarantee that communication is normal.For a small-sized group of local area network (LAN), it is too high to guarantee that with two routing devices next jumps normal cost, use the present invention after, can use a routing device and between port configuration backup, hardware cost and reliability all are guaranteed like this.
Simultaneously, the present invention supports to backup each other between two ports, if two port arrangement different segment the IP address and work simultaneously, under normal circumstances, can independently bear the IP operation forwarding work of two different segments, when a port breaks down, also can guarantee continuously professional.And when operation VRRP agreement, two ports of two routing devices externally have only a virtual ip address, can only handle the business of a network segment.So, use the present invention after, routing device can have port utilization ratio identical when not backing up.
The above only is a preferred implementation of the present invention, does not constitute the qualification to protection range of the present invention.Any any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (10)
1. the backup method of a routing device is characterized in that, may further comprise the steps:
A) two ports that are connected to same local area network (LAN) on the routing device are set to master port and backup port;
B) be the identical parameters that influence routing service of described two port arrangement, for the port arrangement Internet protocol IP address of routing service wherein is provided;
C) when routing device detects master port and breaks down, the IP address switchover of master port to backup port, and is upgraded routing table.
2. according to the backup method of the described routing device of claim 1, it is characterized in that the described IP address switchover with master port of step c) is specially to backup port:
C1) judge whether backup port is in state working properly, if change step c2; If not, do not process;
C2) add described IP address on the backup port to the IP address of deletion master port;
C3) send the free address resolution protocol notice message of constructing with the media control protocol MAC Address of described IP address and backup port.
3. according to the backup method of the described routing device of claim 2, it is characterized in that, after step c), also comprise:
D) after routing device detects master port and is in state working properly, the IP address switchover of former master port is returned on the master port, and upgrade routing table.
4. according to the backup method of the described routing device of claim 3, it is characterized in that the described IP address switchover with former master port of step d) returns on the master port and is specially:
D1) the IP address of former master port on the deletion backup port is for master port disposes described IP address;
D2) send the free address resolution protocol notice message of constructing with the MAC Address of described IP address and master port.
5. according to the backup method of the described routing device of claim 4, it is characterized in that, comprise between step b) and the step c): routing device regularly detects master port and whether is in state working properly;
Comprise between step c) and the step d): routing device regularly detects the master port normal condition of whether resuming work.
6. according to the backup method of the described routing device of claim 5, it is characterized in that describedly whether port is in method that state working properly detects comprises link is detected: send the arp request message to node online in the described local area network (LAN) by detected port; Judge whether receive response message in the given time, if then described port is in state working properly; If not, then described port breaks down.
7. according to the backup method of the described routing device of claim 5, it is characterized in that, describedly whether port is in method that state working properly detects comprises physical connection is detected: judge whether detected port is in state of activation, if then described port is in state working properly; If not, then described port breaks down.
8. according to the backup method of any described routing device of claim 1 to 7, it is characterized in that it is one of following that the mode that described two ports of step a) are set to master port and backup port comprises:
One provides the port of routing service to be set to master port, and another idle port is set to backup port; Or
One provides the port of routing service to be set to master port, and another provides the port of routing service to be set to backup port; Or
Two provide the port of routing service to be set to master port and backup port each other.
9. according to the backup method of any described routing device of claim 8, it is characterized in that: the described parameter that influences routing service of step b) comprises Access Control List (ACL), service quality and multicast group.
10. according to the backup method of any described routing device of claim 8, it is characterized in that: described master port has identical bandwidth with backup port.
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| CN 200510063191 CN1848841A (en) | 2005-04-05 | 2005-04-05 | Route equipment backup method |
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| CN101753244A (en) * | 2008-12-05 | 2010-06-23 | 大唐移动通信设备有限公司 | Method and system for transporting service in RRU loop network |
| WO2011035599A1 (en) * | 2009-09-22 | 2011-03-31 | 中兴通讯股份有限公司 | Method and inquiring device for implementing switching in network fault |
| CN101540718B (en) * | 2008-03-18 | 2011-04-27 | 中国移动通信集团公司 | Method and device for realizing intercommunication of port service in local area network and local area network |
| CN102281158A (en) * | 2011-08-23 | 2011-12-14 | 大唐移动通信设备有限公司 | Line fault processing method and device |
| CN102420767A (en) * | 2011-12-15 | 2012-04-18 | 北京星网锐捷网络技术有限公司 | Method and device for switching forwarding paths, and network equipment |
| CN101414972B (en) * | 2008-11-18 | 2013-01-02 | 福建星网锐捷网络有限公司 | Method and apparatus for updating information |
| CN104040967A (en) * | 2012-12-07 | 2014-09-10 | 华为技术有限公司 | Stream forwarding method for message, and message forwarding device |
| CN105743779A (en) * | 2016-02-19 | 2016-07-06 | 杭州华三通信技术有限公司 | Route restoring method and device |
| CN106341249A (en) * | 2015-07-10 | 2017-01-18 | 中兴通讯股份有限公司 | Redundant port switching method and device |
| CN108055163A (en) * | 2018-01-06 | 2018-05-18 | 北京特立信电子技术股份有限公司 | A kind of dual-homed equipment and its protection switching method |
| CN108768699A (en) * | 2018-05-08 | 2018-11-06 | 国网天津市电力公司 | A kind of channel configuration method of quick positioning telemechanical supervisor failure |
| CN109165506A (en) * | 2018-07-05 | 2019-01-08 | 河南中烟工业有限责任公司 | A kind of method of industry control fault-tolerant server online checking and killing virus and antivirus protection |
| CN109218187A (en) * | 2018-09-30 | 2019-01-15 | 中国船舶重工集团公司第七0九研究所 | A kind of second-layer multicast forwarding table updating method and device |
| CN112202668A (en) * | 2020-11-02 | 2021-01-08 | 儒安物联科技集团有限公司 | Local area network, wide area network fault transfer backup system and method thereof |
| CN112543143A (en) * | 2020-11-30 | 2021-03-23 | 盛科网络（苏州）有限公司 | Method, chip, equipment and storage medium for multicast service fast protection switching |
| CN112968839A (en) * | 2021-03-29 | 2021-06-15 | 新华三信息安全技术有限公司 | Message processing method and device |
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| CN101540718B (en) * | 2008-03-18 | 2011-04-27 | 中国移动通信集团公司 | Method and device for realizing intercommunication of port service in local area network and local area network |
| CN101414972B (en) * | 2008-11-18 | 2013-01-02 | 福建星网锐捷网络有限公司 | Method and apparatus for updating information |
| CN101753244A (en) * | 2008-12-05 | 2010-06-23 | 大唐移动通信设备有限公司 | Method and system for transporting service in RRU loop network |
| CN101753244B (en) * | 2008-12-05 | 2013-08-21 | 大唐移动通信设备有限公司 | Method and system for transporting service in RRU loop network |
| WO2011035599A1 (en) * | 2009-09-22 | 2011-03-31 | 中兴通讯股份有限公司 | Method and inquiring device for implementing switching in network fault |
| US8699325B2 (en) | 2009-09-22 | 2014-04-15 | Zte Corporation | Method and inquiring device for implementing switching in network fault |
| CN102281158A (en) * | 2011-08-23 | 2011-12-14 | 大唐移动通信设备有限公司 | Line fault processing method and device |
| CN102420767A (en) * | 2011-12-15 | 2012-04-18 | 北京星网锐捷网络技术有限公司 | Method and device for switching forwarding paths, and network equipment |
| CN102420767B (en) * | 2011-12-15 | 2014-07-02 | 北京星网锐捷网络技术有限公司 | Method and device for switching forwarding paths, and network equipment |
| CN104040967A (en) * | 2012-12-07 | 2014-09-10 | 华为技术有限公司 | Stream forwarding method for message, and message forwarding device |
| CN106341249A (en) * | 2015-07-10 | 2017-01-18 | 中兴通讯股份有限公司 | Redundant port switching method and device |
| CN105743779A (en) * | 2016-02-19 | 2016-07-06 | 杭州华三通信技术有限公司 | Route restoring method and device |
| CN108055163A (en) * | 2018-01-06 | 2018-05-18 | 北京特立信电子技术股份有限公司 | A kind of dual-homed equipment and its protection switching method |
| CN108768699A (en) * | 2018-05-08 | 2018-11-06 | 国网天津市电力公司 | A kind of channel configuration method of quick positioning telemechanical supervisor failure |
| CN108768699B (en) * | 2018-05-08 | 2020-11-10 | 国网天津市电力公司 | Channel configuration method for rapidly positioning faults of telemechanical supervisor |
| CN109165506A (en) * | 2018-07-05 | 2019-01-08 | 河南中烟工业有限责任公司 | A kind of method of industry control fault-tolerant server online checking and killing virus and antivirus protection |
| CN109165506B (en) * | 2018-07-05 | 2021-07-20 | 河南中烟工业有限责任公司 | Online virus searching and killing and virus protecting method for industrial control fault-tolerant server |
| CN109218187A (en) * | 2018-09-30 | 2019-01-15 | 中国船舶重工集团公司第七0九研究所 | A kind of second-layer multicast forwarding table updating method and device |
| CN109218187B (en) * | 2018-09-30 | 2020-12-01 | 中国船舶重工集团公司第七0九研究所 | Method and device for updating two-layer multicast forwarding table |
| CN112202668A (en) * | 2020-11-02 | 2021-01-08 | 儒安物联科技集团有限公司 | Local area network, wide area network fault transfer backup system and method thereof |
| CN112202668B (en) * | 2020-11-02 | 2022-08-05 | 儒安物联科技集团有限公司 | Local area network, wide area network fault transfer backup system and method thereof |
| CN112543143A (en) * | 2020-11-30 | 2021-03-23 | 盛科网络（苏州）有限公司 | Method, chip, equipment and storage medium for multicast service fast protection switching |
| CN112543143B (en) * | 2020-11-30 | 2022-08-26 | 苏州盛科通信股份有限公司 | Method, chip, equipment and storage medium for multicast service fast protection switching |
| CN112968839A (en) * | 2021-03-29 | 2021-06-15 | 新华三信息安全技术有限公司 | Message processing method and device |
| CN112968839B (en) * | 2021-03-29 | 2022-02-22 | 新华三信息安全技术有限公司 | Message processing method and device |
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