Subject: Re: Cisco HDLC

From: [email-masked]
Date: Wed, 28 Mar 2001 18:18:10 -0400

Is there a spec for this somewhere? Or does this still remain a Cisco "secret?"

Archie Cobbs <[email-masked]> on 03/28/2001 05:00:16 PM

To:   Shahram Davari <[email-masked]>
cc:   "'Sylvanus Jonnalagadda'" <[email-masked]>,
      [email-masked]

Subject:  Re: Cisco HDLC

> I have checked that. It seems that the only difference from the standard HDLC
(RFC-1662) is the value encoded in
> Address, control field.

There's more to it than that.. if you can read FreeBSD kernel source
code there is an implementation at:

http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netgraph/ng_cisco.c?rev=1.14&content-type=text/x-cvsweb-markup

> Is it still using the byte or bit stuffing?

Yes, same frame encoding (bit stuffing, flags, CRC's, etc.)

-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com