From: marc fernandez (mag08036@yahoo.com)
Date: Mon May 15 2006 - 23:21:12 ART
So if I am doing ip unnumbered f0/1 on the tunnels
respectively, filter the addresses on th f0/1
interfaces via the tunnel and everythung should
work.Correct?. Or should it be tunnel destination?
--- Robert Watson <watson.robert@gmail.com> wrote:
> In most cases your tunnel will flap as a result of
> recursive routing
> meaning that it learns of your tunnel endpoint
> through the tunnel. Making
> the interfaces passive simply gets rid of the
> problem by ensuring that you
> are not getting a better metric for the endpoint
> through the tunnel but will
> often defeat the purpose of the tunnel. You can
> simply filter off the
> endpoint network from being advertised out the
> tunnel in both directions
> which will stabilize your tunnel and allow routing
> through the tunnel as
> well, which will often preserve your rpf check if
> troubleshooting MCAST.
>
> bob
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of marc
> fernandez
> Sent: Monday, May 15, 2006 8:04 PM
> To: ccielab@groupstudy.com
> Subject: multicast question with tunneling
>
> I have the following scenario. The IGP running is
> OSPF
> on r1 thru r6. On r5 I am doing multicast pim
> sparse-mode. r5 is the RP, r6 is joining group
> 239.1.1.1. There is a tunnel between r1 and r5 with
> with pim sparse-mode and the appropriate ip mroutes
> on
> r1 and r5. The issue I am having is that it will
> originally work but then the tunnel will flap and go
> down. Do I need to make the tunnel interfaces
> passive
> so OSPF does not send advertisements via the Tunnel?
> Making the interfaces passive seems to keep them up
> and not mess up OSPF. So I am basically trying to
> confirm if this is a must whem doing tunneling in
> multicast.
>
> Comments and Advice is greatly appreciated
>
>
> r2----------r3---------r4---------r5------r6
> |
> |
> |
> |
> r1
>
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This archive was generated by hypermail 2.1.4 : Thu Jun 01 2006 - 06:33:21 ART