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New Member

3925 pim ios 15

hi - i have enabled pim on a 3925 router and it creates a tunnel interface.

this appears to route traffic to the rp over the tunnel interface

if i enable pim on its neighbour router i lose connectivity to the 3925

so basically i have 2 directly connected routers - a 3925 and a 3845

when i apply the following command to the 3845 i lose connectivity to the 3925

ip pim rp-address 1
ip pim spt-threshold infinity group-list 1

can anyone help ?



  • LAN Switching and Routing
VIP Super Bronze

Re: 3925 pim ios 15

Hi Paul,

When you say you loose connectivity, do you mean when you do a "sh ip pim nei" there is no neighbor?


New Member

Re: 3925 pim ios 15

Hi all,

I have a 2911 with IOS 15.0. It looks like you affirm: it creates a tunnel for every rp-mapping address using as the destination address for every tunnel. But, in my case, don´t lose connectivity. Of course, the statistics of these tunnels have 0 packets in & out.

I would appreciate if someone can tell me if this behaviour can be override. We have automatic tools that take statistics form interfaces and these tunnels make some noise.


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