[j-nsp] PIM join Upstream Unknown

Dan Evans pzdevans at gmail.com
Wed Apr 8 13:49:56 EDT 2009


That message typically means that the router doesn't know where to send
joins upstream. Your outputs suggest that connectivity exists, but I'd check
the following:

1. Verify that a unicast route to the RP exists.
2. Verify that it exists in the same routing table PIM is using (inet.0 or
inet.2)
3. Verify that the upstream router is a PIM neighbor.

-Dan



On Wed, Apr 8, 2009 at 10:54 AM, Andrew Jimmy <good1 at live.com> wrote:

> When will you get Upstream interface: uknown? PIM-dense-sparse  mode has
> already been enabled on all interfaces. All the IPs are accessible from
> each
> router and end clients. There is no connectivity or route reach-ability
> issues between routers or multicast source/receiver.
>
>
>
> Multicast source is: 192.168.0.1
>
>
>
> I don't know why the heck I'm getting Upstream interface Unknown on PIM
> join..
>
>
>
> Here is show multicast rpf on receiver end router:
>
>
>
> 1.1.1.1/32
>
>    Protocol: OSPF
>
>    Interface: lsq-1/3/0.1
>
>    Neighbor: (null)
>
>
>
> 192.168.0.1/24
>
>    Protocol: OSPF
>
>    Interface: lsq-1/3/0.1
>
>    Neighbor: (null)
>
>
>
> Here is show pim join:
>
>
>
> Group: 227.12.22.33
>
>    Source: *
>
>    RP: 1.1.1.1
>
>    Flags: sparse,rptree,wildcard
>
>    Upstream interface: unknown (no nexthop)
>
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