From: ccie2be (ccie2be@nyc.rr.com)
Date: Tue Mar 29 2005 - 12:17:17 GMT-3
Dillon,
The passive command is very funky. It works in different ways depending on
the IGP.
With eigrp:
It stops hello packets so no adjacency can be formed with any neighbors out
that interface. The neighbor command doesn't override this behavior. (So,
even if unicast update packets were sent by using the neighbor (and I don't
know if they are), it wouldn't matter because there won't be any adjacency.)
With rip:
It stops broadcast and multicast updates but doesn't stop unicast updates.
So, to send only unicast updates use both the passive and neighbor command.
With ISIS:
It injects the ip addr of that interface into the isis routing process but
also stops adjacencies out the specified interface.
HTH, Tim
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Dillon Yang
Sent: Tuesday, March 29, 2005 1:10 AM
To: mani poopal
Cc: Group Study
Subject: Re: no sending eigrp update
Hi, mani:
I remember scott said that " passive" and " neighbor" are mutually bad for
neighborhood, but are they also, "passive" and "network"?
TIA
dillon
----- Original Message -----
From: "mani poopal" <mani_ccie@yahoo.com>
To: "Dillon Yang" <gzdillon@hotmail.com>; "Group Study"
<ccielab@groupstudy.com>
Sent: Tuesday, March 29, 2005 1:45 PM
Subject: Re: no sending eigrp update
> Hi Dillon,
>
> In eigrp, you cannot use passive interface command, this command will
prevent adjacency formation with the neighbor. Only 2 solutions exists
> 1.distribute-list 101 out s 0
> access-list 101 deny ip any any
>
> 2.eigrp stub receive-only
>
> Mani
>
> Dillon Yang <gzdillon@hotmail.com> wrote:
> Hi, group:
>
> At 911network, a Task: not to send eigrp updates from your pod (Rx) to the
backbone but you must be able to recieve routes from the bb:
>
> router eigrp 10
> distribute-list 10 out e0/0
> access-list 10 deny any
>
> I think the following config is ok, too:
>
> router eigrp 10
> passsive default
> network 0.0.0.0 255.255.255.255
>
> Any advice?
>
> TIA
> dillon
>
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