[AVT] RE: I-D ACTION:draft-ash-avt-ecrtp-over-mpls-protocol-00.txt

["Ash, Gerald R (Jerry), ALABS" <gash at att.com>]

Curtis,

> > Please review and comment on 'Protocol Extensions for ECRTP over MPLS'
> > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-protocol-00.txt 
> > The protocol extensions enable the use of MPLS to route enhanced compressed 
> > RTP (ECRTP) compressed packets over an MPLS LSP without 
> > compression/decompression cycles at each router.
> > 
> > The proposed extensions are based on the requirements documented in 
> > 'Requirements for ECRTP over MPLS' 
> > http://www.ietf.org/internet-drafts/draft-ash-avt-ecrtp-over-mpls-reqs-01.txt.
> > 
> > Thanks,
> > Jerry

> Jerry,
> 
> This looks to be a very good direction to go in.

Thanks Curtis!

> In your encapsulations you should make sure to avoid any values in the
> first byte that could be mistaken as IPv4 or IPv6 or any of the
> encapsulations being worked on by those working on VPN and PW.  See
> "The PWE3 Control Word", Jonathan Stein, 22-Oct-02,
> draft-stein-pwe3-controlword-00.txt, for some early discussion on
> that.  Note though that "Payload Type" is something that many
> providers require so that multipath can be used on IP traffic which
> constitutes the majority of traffic yet reordering is avoided for
> traffic which cannot be split based on what appears to be an IP header
> and the IP src/dst pair.
> 
> It might be best to reserve a single fixed first byte for the "Packet
> Type" (and I suggest you make up a name for this shim such as
> SCID_Packet_Type) and use the second byte for the packet types that
> you have defined.  Just as you have to get numbers for SCID_Request
> Object and Header_Compression_Reply Object from IANA, you'll have to
> coordinate with others over this number space, though it is less clear
> if IANA is the authority on this quite yet.

All good suggestions, will incorporate in the next Rev.

Thanks a lot for your careful review,
Jerry

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