Restoration management system and method in a MPLS network

Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network

Reexamination Certificate

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C370S389000, C370S390000, C370S392000, C370S395500, C370S216000, C370S254000, C370S400000, C370S401000, C370S469000, C709S238000, C709S239000, C709S242000, C709S245000, C709S250000

Reexamination Certificate

active

06956822

ABSTRACT:
In a novel restoration management method and system, the restoration messages are treated in two ways simultaneously so as to avoid delay in transmitting to a next node. In particular, a router alert bit is attached to each restoration message at an edge of the restoration network, which is read by a Label Switched Router so as to identify the restoration message as such. Then the restoration message is duplicated. The original one is directly forwarded to the next node through the shim player so as to avoid any delay. The duplicated one is sent to the application layer at the node for being processed there.

REFERENCES:
patent: 5991300 (1999-11-01), Tappan
patent: 6751746 (2004-06-01), Jain et al.
patent: 2002/0093954 (2002-07-01), Weil et al.
patent: 2002/0126653 (2002-09-01), Vasarainen
MPLS Label Stack Encoding (Network Working Group; Internet Engineering Task Force; RFC 3032): Rosen et al..; Jan. 2001, work in progress Jul. 2000.
IETF Multiprotocol Label Switching Architecture: Le Faucheur, Francois: Jun. 1998.
IP Router Alert Option (Network Working Group; Internet Engineering Task Force; RFC 2113): Katz, Dave: Feb. 1997.

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