[11530] in North American Network Operators' Group
Re: [FYI] Broadcasts at NAPs
daemon@ATHENA.MIT.EDU (Glynn Stanton)
Thu Jul 31 13:58:27 1997
Date: Thu, 31 Jul 1997 17:39:23 +0000 (GMT)
From: Glynn Stanton <glynn@nildram.co.uk>
To: Lyndon Levesley <lol@xara.net>
cc: nanog@merit.edu
In-Reply-To: <Pine.LNX.3.96.970731164814.1124E-100000@chuckie.nildram.co.uk>
I knew as soon as I hit send that Id messed that up... obviously it cant
use HDLC or it wouldnt work on Ethernet/tokenring/fddi etc...
cdp is a media and protocol independnt protocol that runs athe data-link
layer, sending periodic messages to a multicast address.
yes it would use hdlc for serial lines, but not for anything else.
Sorry for any oconfusion.
Glynn
On Thu, 31 Jul 1997, Glynn Stanton wrote:
>
> > 5841 = ??? (is this CDP?)
>
> I believe cdp uses the layer 2 HDLC protocol.
> Interesting troubleshooting tool, if you connect 2 cisco's together
> youll be able to sh cdp neigh and see it up even if IP isnt working.
>
> Glynn
>
