tcpdump mailing list archives

Re: Linux Frame-Relay and misc


From: Guy Harris <guy () alum mit edu>
Date: Fri, 17 Oct 2003 16:26:37 -0700

On Thu, Oct 16, 2003 at 08:19:45PM +0200, Krzysztof Halasa wrote:
OTOH 0x08 can also be, at least in theory, some other thing, something
different than LMI - according to std55/rfc2427:
   For those protocols which do not have a NLPID assigned or do not have
   a SNAP encapsulation, the NLPID value of 0x08, indicating ITU
   Recommendation Q.933 should be used.

I've never seen it in practice, and it is not supported by print-fr
(neither previous one or my patch).

It can also be Q.933 call control, which is what I was really asking
about - i.e., it's more than just LMI (Q.933 annex A), it's Q.933 in its
entirety.

I think the 0x08 stuff from RFC 2427 is for stuff other than DLCI 0 (or
the D-channel, if you have one).
-
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