RE: External LSAs keeping ISDN line up!!!

From: Jay Hennigan (jay@xxxxxxxx)
Date: Sun Apr 15 2001 - 14:49:42 GMT-3


   
On Sun, 15 Apr 2001, Chris Mott wrote:

> I've never understood the reasoning behind a dialer-list that has "deny ospf
> any any", as I thought the whole reason for an OSPF demand-circuit was that
> OSPF could bring up the link if a routing decision deemed it necessary ...
> please correct me if I'm wrong ...

The dialer-list keeps the OSPF multicast traffic from bringing up the link,
but doesn't deny it from traversing the link. Once the link has been
established once (like by a ping), then the OSPF routes will be learned
and retained.

Normal IP traffic destined for that link (if not denied by an access
list) will then bring up the dialer.

--
Jay Hennigan  -  Network Administration  -  jay@west.net
NetLojix Communications, Inc.  NASDAQ: NETX  -  http://www.netlojix.com/
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