Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2003-12-18
2010-12-28
Sheikh, Ayaz R (Department: 2476)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S229000, C370S235000, C370S352000, C370S389000, C370S392000, C709S238000, C709S239000, C709S242000, C709S243000, C709S244000
Reexamination Certificate
active
07860115
ABSTRACT:
Disclosed are, inter alia, methods, apparatus, data structures, computer-readable medium, mechanisms, and means for withdrawing routes based on a tag. One implementation receives one or more messages identifying multiple routes and a tag associated with the multiple routes. A routing database is updated to include the routes. A particular message associated with a route withdraw operation is received, with the particular message including an indication of the tag. The multiple routes are removed from the routing database in response to receiving the tag. For example, the tag may be a Border Gateway Protocol attribute, a Border Gateway Protocol communities attribute, or some other indication. When some devices do not support this feature, before other nodes will typically send to a particular device a message to withdraw multiple routes based on a tag, the particular device must first advertise that it has this capability and/or it will withdraw multiple routes based on a tag.
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Scudder John Galen
Ward David Delano
Cisco Technology Inc.
Haliyur Venkatesh
Sheikh Ayaz R
The Law Office of Kirk D. Williams
LandOfFree
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