[Xorp-users] Problems with mutlicast

Ben Greear greearb at candelatech.com
Thu Dec 22 20:12:23 PST 2011


On 12/22/2011 03:30 PM, Muzinich, Mike wrote:
> We are having problems getting multicast working through a GRE tunnel. All other traffic passes through the tunnel except for multicast. Both GRE endpoints are
> multi-homed. When I generate multicast traffic, I see traffic hit the inside interface but I don't see it hit the outside or tunnel interface. PIM neighbors,
> bootstrap, mrib, and rps all look fine but every entry in the mfc table doesn't have an outgoing interface.
>
> I have tried disabling and enabling net.ipv4.conf.default.rp_filter with no change in behavior , routed all multicast traffic through tun0, enabled multicast on
> the tunnel interface and gre0, and tried this with and without the outside interface in the Xorp configuration. Most of the warning messages related to the
> tunnel are:
>
> [ 2011/12/22 15:18:07.618194 WARNING xorp_pimsm4 PIM ] JoinDesired(S,G) = true: upstream neighbor for source X.X.X.X and group 224.0.1.60: not found
>
> Any help I can get will be appreciated. We are running version 1.8.4.

Use the latest code from GIT...I think I fixed that since the last release.

Thanks,
Ben

>
> *Mike Muzinich
> Network Security Administrator
> Los Rios Community College District
> mike.muzinich at losrios.edu
> (916)568-3013*
>
>
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-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com



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