Spanning tree protocol synchronization within virtual...

Multiplex communications – Network configuration determination – Using a particular learning algorithm or technique

Reexamination Certificate

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C370S389000, C370S392000, C709S242000

Reexamination Certificate

active

07463597

ABSTRACT:
Loop detection information, such as information associated with the Spanning Tree Protocol (STP), is synchronized within virtual private networks. A routing protocol, such as the Border Gateway Protocol (BGP), is extended in a manner that allows STP information or other loop detection information to be opaquely communicated between routing devices across an intermediate network. These techniques may, for example, be useful in environments where Virtual Private LAN Service (VPLS) is run through one or more intermediate networks.

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