Method and device for configuring router, and main and standby service routers

Abstract

The invention provides a method and a device for configuring a router and a main service router and a standby service router. The method comprises the steps as follows: configuring a main service router to transmit a first route of a user to an uplink core router; configuring a standby service router to transmit a host route of the user to the uplink core router; configuring a redundancy protocol between the main service router and the standby service router so that the standby router starts a link with a target user when the link between the main service router and the target user is failed and starts to transmit the host route of the target user to the uplink core router, wherein the bits of the first route are less than that of the main route and are more than or equal to that of a network segment route of the user; and the uplink core router carries out downlink transmission of user flow according to the longest matching principle. The method and the device for configuring the router of the solution of the invention could be used for simplifying the routing table of the core router under the premise of realizing the redundancy of the service router.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a router configuration method and device, and a master and standby service router. Background technique [0002] The current IP metropolitan area network adopts a three-layer network architecture topology, that is, each SW (switch) at the access layer is uplinked to a pair of active and standby SRs (service routers) at the aggregation layer, and the active and standby SRs at the aggregation layer are uplinked. CR (Core Router) to the core layer. In order to save public network IP, users under SW share a gateway. [0003] figure 1 It is an exemplary IP metropolitan area network, and its access layer has two SWs, that is, SW1 responsible for user IP addresses 120.197.1.0-120.197.1.10 and SW2 responsible for user IP addresses 120.197.1.11-120.197.1.20. SW1 and SW2 connect to the active SR and standby SR respectively. [0004] There are two methods for the SR to advertise loc...

AI Technical Summary

Problems solved by technology

[0007] 1. Since CR receives host routes of all users, the IP address of each user is recorded in the routing table of CR. When performing traffic distribution, it is necessary to send the traffic of users to the corresponding SR one by one, thus reducing the running performance;

[0008] 2. Both the routing tables of the active SR and the backup SR record the detailed routing of the entire network. With the expansion of the user scale, the routing table of the device also increases linearly and sharply, which not only reduces the operating performance of the device, but also because the routing table There is an upper limit for entries, which will bring hidden dangers after reaching a certain user scale

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