From: Kevin Baumgartner (kbaumgar@xxxxxxxxx)
Date: Fri Jun 23 2000 - 20:54:34 GMT-3
OSPF ON-Demand Circuit will only send hellos periodically. I think it's very 30
minutes.
And also it will do a initial resync when first setup. This is unlike normal OS
PF which
sends hellos every 30 seconds or so.
This is the advantage of using OSPF ON-Demand circuit over ISDN lines. It wi
ll not
keep up the link continually. Don't need to use ACL's to prevent OSPF traffic
from bring
up the link. You might want to make sure that it's not something else that is b
ring the
ISDN link up. The easiest way I have found to do this is setup IP, ICMP, TCP, U
DP that
permit everything with "log" at the end of the ACL. Then apply this to the dial
er-list. You
should then be able to see what protocols are bring up the link.
From what I remember there might be some configuration issues to see this up.
I have setup OSPF Demand Circuit using one the cciebootcamp labs and it worked
as expected.
- Kevin
At 06:12 PM 6/23/00 -0500, you wrote:
>the ospf protocol will still send hellos and keep the link up. configure an
>ACL that denies ospf any any as interesting traffic and permit ip any any in
>the second line of the ACL. Other entries may be necessary depending on what
>you are doing.
>----- Original Message -----
>From: Mike <mineedha@cisco.com>
>To: <ccielab@groupstudy.com>
>Sent: Friday, June 23, 2000 11:37 AM
>Subject: OSPF ON-Demand Circuit...
>
>
> > I've set up OSPF On-Demand circuits over an ISDN link. The problem is
> > that is never stays down. It goes down and then comes back due to
> > 224.0.0.5... Any ideas what else is needed. More filters?????
> >
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