From: ccie2be (ccie2be@nyc.rr.com)
Date: Wed Apr 28 2004 - 16:16:57 GMT-3
The short answer is because this prevents the bri circuit from flapping. Of
course, to understand why the bri circuit wold flap without this command,
you need to understand what's going on with ppp and the routing protocols
being used. A good explanation can be found in the Cisco Press book,
Troubleshooting IP Routing Protocols, on page 511.
In brief, assuming ppp encap is used over the bri circuit, it generates a
new /32 route. With ospf, when it learns of a new route, that constitues a
change to the link state db that has to be announced. When the circuit
goes, the db changes again - that /32 route is no more. Of course, ospf
needs to announce this new change and brings up the bri circuit again. Once
the circuit is established again, well, guess what, a /32 route appears once
more. And, so it goes.
So, if you enter the no peer neighbor-route, you break the cycle.
HTH
----- Original Message -----
From: "Charles T. Alexander" <charles.t.alexander@verizon.net>
To: <ccielab@groupstudy.com>
Sent: Wednesday, April 28, 2004 2:51 PM
Subject: No Peer Neighbor-route
> Why is the no peer neighbor-route often used with a bri circuit?
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Mon May 03 2004 - 19:48:57 GMT-3