The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] [mpls] mpls wg review of draft-ietf-avt-hc-mpls-reqs-03.txt
Some comments on the draft "draft-ietf-avt-hc-mpls-reqs-03.txt" below: "Figure 1 illustrates an HC over MPLS session established on an LSP that crosses several routers, from R1/HC --> R2 --> R3 --> R4/HD, where R1/HC is the ingress router where HC is performed, and R4/HD is the egress router where header decompression (HD) is done. HC of the RTP/UDP/IP header is performed at R1/HC, and the compressed packets are routed using MPLS labels from R1/HC to R2, to R3, and finally to R4/HD, without further decompression/recompression cycles." The text and also the figure seems to indicate LSPs all the way to router R4. Would this work with penultimate hop popping? Do you intend to identify the compressed packet by incoming interface and SCID? This would work, but matching of SCID at the incoming interface would demand some extra implementation. When thinking about it some more, could it be a problem with multiple LSPs terminating at the same incoming interface and compression is used over them because of colliding SCIDs? Again with PHP. Regarding "Extensions to MPLS signalling", I assume that this signalling is not intended to be done along with the actual LSP setup but rater between "HC-ingress" and "HD-egress"? Thanks, Thomas At 15:08 2004-09-21, you wrote: >All, > >the avt working group has requested that >draft-ietf-avt-hc-mpls-reqs-03.txt should be >published as a proposed standard. > >Our AD's asks that we (the mpls working group) review >and comment on the draft. > >Since it is my ambition to send our response on Monday >please send any comment to me before that. > >/Loa > >-- >Loa Andersson > >Principal Networking Architect >Acreo AB phone: +46 8 632 77 14 >Isafjordsgatan 22 mobile: +46 739 81 21 64 >Kista, Sweden email: loa.andersson@acreo.se > loa@pi.se > >_______________________________________________ >mpls mailing list >mpls@lists.ietf.org >https://www1.ietf.org/mailman/listinfo/mpls _______________________________________________ mpls mailing list mpls@lists.ietf.org https://www1.ietf.org/mailman/listinfo/mpls
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