METHOD, DEVICE AND SYSTEM THEREOF FOR MIGRATING VRF

摘要

A method, a device and a system thereof for migrating a VRF are disclosed. The system comprises: a first BGP progress which is used for sending the VRF and the configuration information of a BGP Peer in the VRF to a second BGP progress and notifying a TCP to hot backup a TCP link correlative with a Peer session of the BGP Peer in the VRF to the second BGP process; and the second BGP progress which is used for creating a virtual VRF for storing the configuration information and a virtual BGP Peer, and receiving the TCP link which is correlative with the Peer session of the BGP Peer in the VRF and is hot backup to the second BGP process by the TCP and a route of Adj-RIB-IN corresponding to the BGP Peer in the VRF sent by the first BGP progress. In a process in which the VRF dynamically migrates between the BGP progresses, a BGP Peer service of the VRF is not interrupted and the conversation is not disconnected; and an opposite end device cannot perceive a migration process of a router at all, and route change information generated in the migration process is updated after the migration.