Device-level redundancy protection method and system based on LACP

Abstract

The invention relates to a device-level redundancy protection method and system based on LACP (link aggregation control protocol); the method comprises the following steps: aggregation groups LAGP1 and LAGP2 on a first device and a second device are configured with the same parameters and transmit LACPDU messages of the parameters with same configuration to an aggregation group LAGC on the customer edge; the LAGC adds physical links connected with the LAGP1 and the LAGP2 to the same aggregator by interaction of the LACPDU message; the LAGP1 and the LAGP2 respectively add the physical link connected with the LAGC to the individual aggregator to form a virtual aggregator AGGV; and the customer edge processes the message interaction with a server by an AGGC and an AGGV. The invention implements that multiple PEs can be aggregated with CEs successfully at the same moment, thereby improving the utilization rate of the device and the service continuity when switching.

Description

technical field [0001] The invention relates to the field of data communication, in particular to an LACP-based equipment-level redundancy protection method and system. Background technique [0002] With the growth of data traffic and the improvement of service quality requirements, a single physical link in the data link layer cannot meet the usage requirements in terms of bandwidth and reliability, and LACP (Link Aggregation Control Protocol, Link Aggregation Control Protocol) is very difficult. Ok solved the problem. LACP virtualizes two or more physical links into a logical link. The logical link as a whole is transparently presented to upper-layer applications. The bandwidth of the logical link is the sum of the bandwidths of all working physical links. The physical ports bound to the same logical link should have the same Ethernet link layer characteristics, such as port speed, duplex, port status, etc. The advantage of this is that when one of the physical links goes...

AI Technical Summary

Problems solved by technology

[0010] It can be seen that the IEEE802.3AD standard’s limitation on the system ID leads to the use of the traditional LAG dual-system backup mechanism. Only one PE can successfully aggregate with the CE at the same time, and multiple PEs cannot be used for forwarding at the same time, which reduces the equipment utilization. , all traffic will be interrupted within the time difference from the abnormality of the forwarding PE to the switch to another PE and normal forwarding, and the device-level redundancy capability is poor

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