Re: HDLC Frame Format

From: Annu Roopa (annu_roopa@xxxxxxxxx)
Date: Fri Jan 11 2002 - 18:41:41 GMT-3

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I think its

FLag,address,control,Cisco Protocol,Data,FCS
Cisco protocol field is 2 bytes if i remember right...

http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/sdlcetc.htm#xtocid4

HTH,someone correct me if i am wrong.

Annu
--- Charles Huang <CharlesNY2000@yahoo.com> wrote:
> Hi,
>
> Does anybody know the "exact" Cisco HDLC frame
> format ?
> I found many HDLC frame formats and not sure which
> one Cisco uses.
> I'm trying to find out the exact overhead sending a
> TCP ACK packet across the
> serial link.
>
> Thanks
>

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