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Title : Multi-Segment Pseudo Wire Signaling
Author(s) : H. Shah, et al.
Filename : draft-shah-bocci-pwe3-ms-pw-signaling-01.txt
Pages : 27
Date : 2005-7-19
The pseudowire switching [6] draft describes how a Pseudowire can
span across multiple PSN domains. This multi-segment PW (MS-PW)
threads through one or more PEs that are not the endpoints of the PW
and are called switching PE (S-PE). The switching PE at each hop is
configured a-priori with two single hops PW information that enables
it to conduct splicing between the two. The configuration of such
information at each S-PE for possibly thousands of MS-PWs is
cumbersome. We describe a mechanism whereby a S-PE can identify and
process the PW control signaling with the information present in the
signaling message in a manner that eliminates the requirement to
configure PW splicing information. In this mechanism source PE
inserts information about the destination PE and the PW endpoint that
is recognized by the receiving PE to identify his role as a switching
PE and engage in propagating the PW signal towards the destination
PE.
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