From: Joseph Rinehart (jjrinehart@hotmail.com)
Date: Fri Sep 13 2002 - 20:48:50 GMT-3
The net of this is that I am trying to see if there is a way to force EIGRP
to use unicast rather than multicast for the hello messages. Any ideas?
----- Original Message -----
From: "Edward Monk" <edmonk@attbi.com>
To: "'Joseph Rinehart'" <jjrinehart@hotmail.com>; <ccielab@groupstudy.com>
Sent: Friday, September 13, 2002 3:56 PM
Subject: RE: EIGRP Manual Neighbor Configuration/Unicast
> Joseph,
>
> It supposedly should work but Cisco reports there is a bug and
> recommends not using it. I tried to search on the bug but it gives me a
> message about it not being able to be displayed. Not sure why. Maybe a
> there is Cisco employee who could pull it for us to see what it is?
>
> Look under "EIGRP frequently asked questions" on the Cisco site and you
> will see a document called. "What does the neighbor statement in the
> EIGRP configuration section do?"
>
> http://www.cisco.com/warp/public/103/eigrpfaq.shtml#Q9
>
> Basically it says don't use it because it does very bad things. Hmmmm...
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Joseph Rinehart
> Sent: Friday, September 13, 2002 4:08 PM
> To: ccielab@groupstudy.com
> Subject: EIGRP Manual Neighbor Configuration/Unicast
>
> Weird question, but I can't find any trace of this on CCO.
>
> EIGRP uses multicasts to send out hellos for neighbor discovery as does
> other routing protocols. In certain environments where you cannot
> broadcast
> or multicast that can be a problem. I tried programming in neighbors
> manually and the hellos seems to be sent out in non broadcast mode.
>
> The thing is that there is NO neighbor command documented for EIGRP,
> though
> I looked. I tried this on 11.2 as well as 12.0 code so I know it works.
>
> First, does anyone know the details about the function of the
> undocumented
> neighbor command in EIGRP? Does it indeed use unicast rather than
> multicast
> for hellos?
>
> Second, if this is not the case is there a way to force unicast in EIGRP
> for
> hellos?
>
> Looking forward to the responses.
>
> Joe
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:51 GMT-3