rohc over... dvb

["mark.a.west" <maw@roke.co.uk>]

Hi all,

There wasn't really time to dive down this particular rat-hole at the BoF,
but it seems like an opportune moment to raise the issue...

[if it's already been discussed, then my apologies, but I think I'm safe!]

It seemed to be that the Ethertype was felt more appropriate than PPP for
the 'type' field, which seems entirely reasonable.  About the only
justification for the PPP type was that there is already a PPP type value
for ROHC, which is seen as being useful in the IP/MPEG-2 context.

It is clearly true that an Ethertype could be acquired for ROHC.
However, a word of caution!  This would not be the whole story...  In
terms of 'ROHC over Foo', this is only defined for Foo == PPP (in RFC
3241)!  This specifies the negotiation that is necessary to make ROHC
work.  So, you would need not only an Ethertype, but also a 'ROHC over
Ethernet' description to enable this.  Maybe not much of an issue, but...

FWIW, there was some discussion about ROHC over 802.11b (I think) a while
ago (well, at S-F).  However, I don't think that's gone anywhere, so..?!

Cheers,

Mark.


Mark A. West, Consultant Engineer
Roke Manor Research Ltd., Romsey, Hants.  SO51 0ZN
Phone +44 (0)1794 833311   Fax  +44 (0)1794 833433

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