From: Nate Cielieska (ncielieska@gmail.com)
Date: Tue Jul 15 2008 - 13:24:26 ART
Igor,
When you turn on unicast updates with the "neighbor x.x.x.x" command, this
does not disable the multicast updates out of that interface. It merely
sends that particular neighbor a unicast update and sends out a
224.0.0.9multicast update as well.. to stop the multicast updates you
used the
passive-interface command. The passive-interface command has no bearing on
your unicast updates so your updates will be seen on your router.. meeting
your requirements.
Regards,
Nate
On Tue, Jul 15, 2008 at 10:58 AM, Igor Manassypov <imanassypov@rogers.com>
wrote:
> if I configure that interface on which my neighbor sits as passive, and I
> also configure a neighbor command explicitly, are routes going to be
> exchanged?
>
> Jonathan Greenwood II <gwood83@gmail.com> wrote: Igor when you use the
> neighbor command you are sending RIP updates via
> unicast by specifiying the IP Address of the neighboring router as opposed
> to the multicast address 224.0.0.9 which all rip enabled interfaces listen
> on. Passive interface with RIP doesn't allow updates to be sent out the
> interface but an interface can still receive updates from my understanding.
> To actually form the neighbor relationship the interface should not be
> configured for passive interface. You could also peform RIP authentication
> on both sides depending on the requirements/restrictions of the question.
>
> HTH
>
> Jonathan
>
> On Tue, Jul 15, 2008 at 9:44 AM, Igor Manassypov
> wrote:
>
> > Could someone please clarify rip's neighbor command mixed with a
> > passive-interface? For example, if you are asked to make sure that
> routing
> > updates are only sent to a particular router, I will configure a
> > corresponding 'neighbor' entry under my rip process, but to satisfy the
> > requirement that only that particular router gets updates I would also
> need
> > to enable the passive interface. As soon as I do that, there are no more
> > routing updates coming from that interface even though I have an explicit
> > neighbor configured... If I do not use the passive interface, then other
> > routers will get updates breaking the requirement...
> >
> >
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