VRRP (virtual router redundancy protocol) based data transmission method and device

Abstract

The invention provides a VRRP (virtual router redundancy protocol) based data transmission method and device. According to the method, when node equipment in two private networks are communicated through a common network, each edge node equipment in the two private networks establish a corresponding tunnel penetrating the common network, primary node equipment is elected, the elected primary node equipment notifies the edge node equipment at the opposite end through the tunnel to be updated to primary node equipment, and primary nodes of the two private networks transmit data through the established tunnels. The tunnels are established between two sets of edge node equipment in the private networks, the primary node equipment is elected in the two private networks, and the elected primary node equipment notifies the edge node equipment at the opposite end through the tunnel to be updated to the primary node equipment, so that data transmission is realized, the packet loss probability is reduced, and the data transmission accuracy is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of network communication, in particular to a VRRP-based data transmission method and device. Background technique [0002] Virtual Router Redundancy Protocol (VRRP) is a selection protocol, which can dynamically assign the responsibility of a virtual router to one of the VRRP routers on the LAN. The VRRP router that controls the IP addresses of the virtual routers is called the master router, and it is responsible for forwarding packets to these virtual IP addresses. All hosts in a local area network are set with default routes. When the destination address sent by the hosts in the network is not in the local network segment, the message will be sent to the external router through the default route, thus realizing the communication between the host and the external network. When the default router fails, the internal host will not be able to communicate with the outside. If the router is set with VR...

AI Technical Summary

Problems solved by technology

With the continuous strengthening of network interoperability, the intercommunication between private networks and public networks has become more and more frequent. figure 1 It is a network structure diagram of VRRP transmission on a private network across a public network. As shown in the figure, switches A and B belong to different private networks and communicate across the MPLS L3VPN network through edge node devices PE1, PE2, PE3, and PE4. According to the VRRP protocol, the private network where switch A resides selects PE2 as the primary node device for communication, and the private network where switch B resides selects PE3 as the primary node device for communication. Inconsistent with the receiving path, even if the private network where switches A and B are located selects PE1 and PE3 as the active node devices respectively, the data sending and receiving paths between switches A and B are consistent, but when the link between PE1 and PE3 When a failure occurs, because PE1 and PE3 cannot detect the link failure in the public network, PE1 and PE3 cannot switch to the standby node device, resulting in data packet loss

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