Ethernet automatic protection switching

Details Ethernet automatic protection switching Ethernet automatic protection switching

2006-02-21

2006-02-21

Ton, David (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Transmission facility testing

C370S216000, C370S222000

Reexamination Certificate

active

07003705

ABSTRACT:
A method and apparatus is provided for automatic protection switching in a ring network by creating a protection domain having a control vlan and protected data vlans and designating a master node and transit nodes connected by a primary port and a secondary port. The master node blocks the secondary port for data vlan traffic until it detects a fault either by notice from a transit node or by polling. When a fault is detected, the master node unblocks the secondary port for data vlan traffic. When the fault is restored, the transit node temporarily blocks the restored port to data vlan traffic thereby preventing a loop. Each time the secondary port is blocked and unblocked, the forwarding databases on all the nodes are flushed.

REFERENCES:
patent: 5003531 (1991-03-01), Farinholt et al.
patent: 5159595 (1992-10-01), Flanagan et al.
patent: 5781715 (1998-07-01), Sheu
patent: 5802056 (1998-09-01), Ferguson et al.
patent: 5923643 (1999-07-01), Higgins et al.
patent: 5958064 (1999-09-01), Judd et al.
patent: 6088141 (2000-07-01), Merli et al.
patent: 6163527 (2000-12-01), Ester et al.
patent: 6233619 (2001-05-01), Narisi et al.
patent: 6414958 (2002-07-01), Specht
patent: 6430150 (2002-08-01), Azuma et al.
patent: 6445715 (2002-09-01), Annaamalai et al.
patent: 6510141 (2003-01-01), Ramfelt et al.
patent: 6600719 (2003-07-01), Chaudhuri
patent: 6658015 (2003-12-01), Merchant et al.
patent: 6678241 (2004-01-01), Gai et al.
patent: 6834056 (2004-12-01), Hayes

Affiliated with

Also associated with

Rating

Ethernet automatic protection switching does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ethernet automatic protection switching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ethernet automatic protection switching will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3686071