Processing method for loop network protection

Abstract

The invention provides a ring protection processing method, comprising the steps of: starting a timer for each node and regularly inquiring about address updating state of each port; when node processing link is switched, setting the address updating state of an to-be-updated port as an address updating preparing state; and the timer finds the address updating state of the port is an updating preparing state and then makes port updating processing, according to the link type and the comparative result of the difference between the current time and last updating time of the to-be-updated port and the address updating protection time. And the invention quickly updates MAC address table of a port when making link switching, reducing number of hardware operating times and raising hardware efficiency, and fully using link resources, thus meeting the requirements of highly real-time services for ring protection systems.

Description

technical field [0001] The invention relates to a processing method for ring network protection in the Ethernet automatic protection technology. Background technique [0002] The Ethernet ring network automatic protection system is composed of multiple nodes connected to form a ring, in which multiple domains can be defined on the ring, a domain includes master nodes and transmission nodes, and a group of business virtual local area networks for user data forwarding protected by this domain (Virtual Local Area Network, referred to as VLAN) and the control VLAN used for forwarding protocol packets. For a specific domain, the protected service VLAN is called the protected service VLAN, and the ports on the two rings of the master node are respectively defined as the master port and the slave port. The master node sends a link health detection frame from the master port, and if the link is intact, it receives a link health detection frame from the slave port. When the link is...

AI Technical Summary

Problems solved by technology

[0009] In addition, in a single-domain multi-ring network, a link switchover will generate multiple link status notification frames. Each time a node on the ring receives a link status notification frame, it needs to update the port MAC address table. A link switchover will Causes the nodes on the ring to repeatedly update the port MAC address table for hardware operations

[0010] Due to the limitation of hardware processing capability, it is time-consuming to update the MAC address table of a port, and it is not time-saving to update only the MAC addresses of some VLANs on the port than to update all the address tables on the port.

When the Ethernet ring network protection system performs link switching, the nodes on the ring repeatedly update the MAC address table of the port through hardware operations, which takes a long time, sometimes even hundreds of milliseconds, which is not conducive to the rapid operation of the ring network protection system. to switch

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