From: Matt Wagner (miguknom@xxxxxxxxxxx)
Date: Thu Sep 06 2001 - 20:27:21 GMT-3
All I did was add the no peer neighbor-route command to both routers' BRI
interfaces and it fixed the flapping problem. A lot of people emailed me
and told me to filter a Type 5 LSA, but I didn't need to do it in this case.
I'm sure there must be a scenario that calls for it since so many people
are aware of it, but Peter Whittle's explanation and solution were perfect
for my problem. I am curious to find out whether or not it would work the
same with dialer interfaces. I suppose it would...
Matt
----Original Message Follows----
From: Jerry Toomey <jetoomey@yahoo.com>
Reply-To: jtoomey@wansend.com
To: Matt Wagner <miguknom@hotmail.com>, peter@whittle-systems.demon.co.uk,
ccielab@groupstudy.com
Subject: Re: one more question from the OSPF Demand Circuit thread
Date: Thu, 6 Sep 2001 15:15:46 -0700 (PDT)
That's a great trick. It would have saved me a couple thousand dollars to
have known. Is it used in conjunction with the distribute-list filters or
is it a replacement for those filters?
Jerry
--- Matt Wagner <miguknom@hotmail.com> wrote:
> Thanks Peter. That did it. I had to add it to both sides, in case
> anyone
> else is wondering...
>
> Matt
>
>
>
> ----Original Message Follows----
> From: Peter Whittle <peter@whittle-systems.demon.co.uk>
> To: Matt Wagner <miguknom@hotmail.com>
> Subject: Re: one more question from the OSPF Demand Circuit thread
> Date: Thu, 6 Sep 2001 13:14:46 +0100
>
> Matt,
>
> If you are using PPP encapsulation then PPP inserts a /32 route to the
> other end when the IPCP is established, - not a problem! But when the
> IPCP is closed (as the ISDN call is being dropped) is causes the route
> to be deleted, Major issue! OSPF then says 'hey' a route has changed so
> it is time to demand that the ISDN comes up again....
>
> Issue a 'no peer neighbor-route' This stops PPP creating / deleting the
> /32 route to the other end.
>
> Peter
>
> In message <F233A1D4V0b5wx0E5JL00008906@hotmail.com>, Matt Wagner
> <miguknom@hotmail.com> writes
> >Hey, I accedentally deleted the solution to the problem of OSPF making
> the
> >BRI interface flap when ospf demand circuit is configured. It hasn't
> posted
> >to the archive yet. Does anyone still have it? (As you may have
> guessed,
> I
> >have a flapping ISDN link right now.)
> >
> >Matt
> >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:32:15 GMT-3