From: Venkataramanaiah.R (vramanaiah@gmail.com)
Date: Mon Sep 12 2005 - 04:40:56 GMT-3
Exactly, the neighbor command must be configured on both the guys. The
behaviour is different in Eigrp actually due to an IOS bug. When the
Neighbor statement is added in eigrp, it disables all multicast processing
on the i/f (incoming) and also prevent eigrp multicast updates (outbound).
So if neighbor statements are used, then use them on both peers, else eigrp
adjancies will fail to come up. When I say it disables incoming multicast, i
guess it literally stops listening to all multicast. I assume, (need to test
though), If you had OSPF on the same segment, then that would fail too.. So
configuring a neighbor statment in Eigrp is not a recommended by TAC.
http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a008012da
c4.shtml#ten
I am not sure, what you are trying to achieve, but if the requirement is
some sort of filtering, then do it with distribution list. This is the TAC
recommended method. See
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f0a.
shtml
-Venkat
On 9/12/05, Godswill Oletu <oletu@inbox.lv> wrote:
>
> the neighbor command ask the router to start using unicast instead of
> multicast for the configured neighbor. both neighbors must be configured
> to
> use unicast or multicast , else one neighbor will be sending and listening
> on
> the multicast address while the other is doing so on the unicast address.
> this is the behaviour in eigrp, note that other protocols handles the
> 'neighbor'
> command differently.
>
> HTH
> Godswill Oletu
>
>
> ----- Original Message -----
> From: "Quetta Walla" <quetta_1@lycos.com>
> To: <ccielab@groupstudy.com>
> Sent: Sunday, September 11, 2005 4:28 PM
> Subject: EIGRP neigbor command
>
>
> > Hello,
> >
> > How does neighbor x.x.x.x command work in EIGRP? Would it work if I want
> > to unicast EIGRP packets to a single neighbor?
> > Here is how I am trying to do it:
> > router eigrp 100
> > neighbor 204.12.1.254 <http://204.12.1.254> e1
> > netw 204.12.1.6 <http://204.12.1.6> 0.0.0.0 <http://0.0.0.0>
> > no auto
> >
> > But I get this messege:
> >
> > 06:16:58: %DUAL-5-NBRCHANGE: IP-EIGRP 100: Neighbor
192.4.1.254<http://192.4.1.254>
> > (Ethernet1) is down: Static peer configured
> >
> > And the neighbor never comes up. It does come up after removing neighbor
> > 204.12.1.254 <http://204.12.1.254> e1 command. Any ideas?
> >
> > --
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