Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1997-12-29
2000-03-07
Patel, Ajit
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370400, H04L 1228
Patent
active
060349611
ABSTRACT:
In an active/standby routing system for establishing an active route and the corresponding standby route in an ATM network, a node transmits, as a connection signaling message, a connection pair identifier which is unique to a combination of the active and the standby routes together with information which is indicative of either of active and standby routes. The active and the standby routes are quickly switched from one to another even when one of the routes is to be recalculated due to a trouble in the other route.
The connection signaling message is transmitted to both the active and the standby routes from the first node. A repeating node receives the message, sets the route indicated by the information indicating an active or standby route in the received message and thereafter transmits the message. An end node records information on paired active and standby routes from the connection signaling message received through the active and standby routes to maintain correspondence between active and standby routes.
REFERENCES:
patent: 5649108 (1997-07-01), Spiegel
patent: 5712854 (1998-01-01), Dieudonne
patent: 5805593 (1998-09-01), Busche
patent: 5809011 (1998-09-01), Almay
Iwata Atsushi
Masuo Hitoshi
NEC Corporation
Patel Ajit
Pizarro Ricardo M.
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