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Brief Review of Proposals End-to-End VoMPLS Header Compression (draft-ash-e2e-vompls-hdr-compress-00.txt)
steps
use RSVP to establish LSPs between CE1-CE2
use cRTP (or simple HC) to compress header at CE1, decompress at CE2
CE1 requests SCIDs from CE2
CE1 appends CE2 label to compressed header
header compression context routed from CE1 --> PE1 --> P --> PE2 --> CE2
route compressed packets with MPLS labels CE1 --> CE2
packet decompressed at CE2 using cRTP (or simple HC) algorithm
advantages
minimizes PE requirements (has to route HC context)
disadvantages
CE’s need to run RSVP, possible scalability issue
PPT Version