From: Troy (troylevin@hotmail.com)
Date: Thu Apr 14 2005 - 15:08:12 GMT-3
JP,
The source of the Multicast traffic from your Routing Table's perspective
should be reached out the same interface that the Multicast traffic was
received on. In addition make sure that the route to the "RP" also is seen
by the Routing table as reachable out the same interface which makes it an
incoming interface in the mroute table. If not try adding the mroute for
the RP and the Source pointing out the correct interface.
Posting configs will help as well
HTH,
Troy
On 4/14/05 12:33 PM, "Jean Baaklini" <JEAN@se.ibm.com> wrote:
> Hi Lee,
>
> let's say the layout looks like that:
>
> Src
> |
> R1----------------R2
> | |
> | |
> R3---------------R4
> | (RP) |
> |___________R5(mapping)
>
> the RPF faillure happens on R4 (it sees R5 as the rpf nbr instead of R2)
>
> My mroute looks like: ip mroute src-IP mask R2'sIPaddress
>
> Any idea?
>
> Cheers,
> JP
>
>
>
>
> Lee Donald <Lee.Donald@t-systems.co.uk>
> Sent by: nobody@groupstudy.com
> 2005-04-14 18:08
> Please respond to
> Lee Donald
>
>
> To
> Jean Baaklini/Sweden/Contr/IBM@IBMSE, ccielab@groupstudy.com
> cc
>
> Subject
> RE: RPF failure
>
>
>
>
>
>
> It's sounds like your ip mroute statement is wrong, what's your config?
>
> This static route will override any other dynamically learnt routes.
>
>
>
> -----Original Message-----
> From: Jean Baaklini [mailto:JEAN@se.ibm.com]
> Sent: 14 April 2005 16:56
> To: ccielab@groupstudy.com
> Subject: RPF failure
>
> Hi All,
>
> I'm currently working on a multicast routing scenario on which I'd
> appreciate your comments.
>
> One of my routers is dropping the multicast feed because of a multicast
> faillure : Its rpf nbr is the mapping agent (I'm using auto-rp) instead of
>
> being the correct rpf (to the source).
> I tried to add a multicast static route (even played with the admin
> distances, ...) but I doesn't seem to change anything: the static route is
>
> added to the config but when I type sh ip mroute <group> , the rpf nbr is
> still the mapping agent.
>
> I really don't get it... Does anyone have an idea?
>
> Thank you
>
> JP
>
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