Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2004-04-28
2009-12-15
Pham, Chi H (Department: 2416)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S254000, C370S255000, C709S241000, C709S242000
Reexamination Certificate
active
07633874
ABSTRACT:
A soft notification technique isolates address family application based errors or events occurring within a routing protocol, such as the Border Gateway Protocol (BGP), used to exchange routing information between a router and its peer router over a BGP session operating on a reliable transport. The technique apportions the session into a plurality of logical subsets, each of which is associated with an address family application (AFI/SAFI) module of a BGP protocol executing on the routers. BGP soft notification messaging is employed to allow the router to notify its peer of an isolated error condition or event associated with an AFI/SAFI module. Isolation of the error/event enables restart (“soft reset”) of only the associated AFI/SAFI module, thereby obviating the need to reset or terminate the entire BGP session and reliable transport between the router and peer. Notably, soft reset of the module occurs without disrupting services provided by other AFI/SAFI modules of the BGP protocol.
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Nalawade Gargi
Patel Keyur P.
Scudder John Galen
Ward David D.
Cesari and McKenna LLP
Cisco Technology Inc.
Faroul Farah
Pham Chi H
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