Patent · US Active

Ethernet switch ring (ESR) protection method and transit node

US8670305B2 · kind B2 · utility

3Cited by

6References

9Claims

0Family size

Assignee

ZTE CORPORATION · CN

Inventors

Yuanyuan Peng · Nanjing, CN
Tao Zhang · Beijing, CN
Liming Hong · Nanhu, CN

Key dates

Filing date	May 19, 2010
Grant date	Mar 11, 2014
Priority date	—
Expiry date	Aug 3, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L12/403
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

An Ethernet Switch Ring (ESR) protection method for introducing the pre-up state for the transit node, includes, after a loop failure is recovered, the transit node on the loop entering the pre-up state if not receiving the loop failure protocol message within a set time. And when the transit node is in the pre-up state and the loop fails again, i.e., the transit node receives the loop failure protocol message in the pre-up state, the transit node opens the master and slave ports and refreshes the MAC address. Effectively, the transit node is an ESR transit node.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.