Yes you can use multiple rp-address config commands but not for the same group as there is no way of proritizing which rp to use when there are multiple rp's for the same group.
You have to make sure the RP's are for different groups eg. from a 2621XM router
ip pim rp-address 192.168.6.10 2
ip pim rp-address 192.168.5.10 1
access-list 1 permit 188.8.131.52
access-list 2 permit 184.108.40.206
Here is what I did...
access-list 1 permit 220.127.116.11 0.255.255.255
access-list 1 permit 18.104.22.168 0.255.255.255
access-list 1 permit 22.214.171.124 0.255.255.255
access-list 1 permit 126.96.36.199 0.255.255.255
access-list 2 permit 188.8.131.52 0.0.0.255
ip pim rp-address 184.108.40.206 2
ip pim rp-address 10.33.63.1 1
I hope this will work.
Ws just about to post again to tell you that you can use wildcards but you seem have to worked that out yourself.
Let me know if it all works. Thanks for the rating.
It seems to be working at least for the old rp-address. I am no seeing mcast group from the new rp address. I am able to ping it but some troubleshooting commands are failing:
NJ00#sh ip rpf 220.127.116.11
RPF information for ? (18.104.22.168) failed, no route exists
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 22.214.171.124, timeout is 2 seconds:
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms
I suppose you wanted to configure two RP addresses for redundancy purposes, right?
If so, you might want to look at configuring anycast RP.
Refer to the following document for more information on anycast RP.
The fact that the "sh ip rpf" fails but that the ping works is most probably due to the fact that the route to 126.96.36.199 is via an interface that is not configured for PIM.