The MPLS WG Archive

[James Carlson <james.d.carlson@east.sun.com>]

Alex Zinin writes:
>  A number of companies working in the SONET area already use or are
>  planning to use DCC for IP control plane [I put MPLS list back ;),
>  since this question is related to GMPLS and OTN-related work].
> 
>  There are two types of IP encapsulation on DCC that I know of:
>  LAP-D and PPP/HDLC. We use the second one in our SONET products.
> 
>  I think writing up an IETF document describing this would make sense.

Describing which part?  I think there are at least three separate
issues here.  One is the control plane issue (specifying the use of IP
over DCC for carrying control messages), another is the encapsulation
(for which RFCs 1332, 1661, and 1662 should do fine), and a third is
having ITU-T specify that PPP is a "legal" option for DCC.

For the first two issues, I think those are already handled.  It's
just that third one that might be an issue for some users, and I don't
think that can be done within an IETF working group.

If you're suggesting a BCP saying that IP/PPP/HDLC/DCC is a good
thing, I suppose that's possible, but I don't see what it
accomplishes.

-- 
James Carlson, Internet Engineering       <james.d.carlson@east.sun.com>
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