Loop fast switching method not affected by the deletion efficiency of the MAC address

Abstract

The invention is a quick ring switching method not influenced by MAC deleting efficiency, comprising: detecting ring state: if the ring turn bad, prohibiting each port on ring from learning MAC address and deleting the MAC address and setting broadcasting flag bits for common ports; detecting whether all the MAC addresses of the ports on ring have been deleted: if yes, clearing the broadcasting flag bits on the common ports and setting MAC address learning bits of ports on ring; when transmitting a message, it also comprises: 1. finding entrance port and target MAC address and judging whetherthe exit port is a port on ring: if yes, executing 2 and otherwise executing 4; 2. judging whether the entrance port is set with broadcasting flag: if yes, executing 3 and otherwise executing 4; 3. if the message is broadcasted in VLAN, then executing 5; 4. according to the target MAC address, directly transmitting the message; and 5. ending the message transmission. And the invention solves the problem that the ring switching rate is relatively low because the MAC deleting efficiency is low in the ring protection, and extremely reduces packet loss rate.

Description

technical field [0001] The invention relates to a ring network protection technology in an IP network, in particular to a ring fast switching technology, in particular to a ring fast switching method which is not affected by MAC address deletion efficiency. Background technique [0002] In the field of data switching devices such as switches, Ethernet Automatic Protection Switching (EAPS) is a commonly used technology for preventing links from forming loops. In, RFC (Request for Comments) 3619 describes the implementation method of EAPS technology in detail. In the EAPS domain, one device is selected as the master device, and the other devices are slave devices. The master device has two ports on the ring, one is One is the master port and one is the slave port. The basic principle of this method to prevent the link from forming a loop is: when the loop exists, the slave port on the master device is set to a BLOCK (blocking) state, thereby avoiding the formation of the loop...

AI Technical Summary

Problems solved by technology

[0004] Due to the limitation of chip functions, the speed of deleting MAC addresses of different chips is different. Some chips may have low efficiency of MAC address deletion, and it takes a long time to delete a large number of MAC addresses. This shortcoming becomes a disadvantage in loop switching. bottleneck

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