Method, apparatus and system for ring protection

Details Method, apparatus and system for ring protection Method, apparatus and system for ring protection

2009-03-13

2011-10-04

Ngo, Ricky (Department: 2464)

Multiplex communications

Fault recovery

Bypass an inoperative channel

C370S258000

Reexamination Certificate

active

08031590

ABSTRACT:
A method, apparatus and system for Ethernet Ring Protection (ERP) are disclosed. The system includes: a node which detects a link fault blocks the port connected with the faulty link after the link on the ring is faulty, and sends a fault alarm message to adjacent nodes; and the adjacent nodes judge whether the state of the node changes from the normal state to the faulty state according to the received fault alarm message, and clear the forwarding table of the node if such is the case.

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