Couple multicast questions

I am attempting to setup anycast RP using BSR,. The Cisco
documentation shows that the MSDP originator id should be a unique
loopback on the device, but all the solutions guides (IPexperts) all
seem to use the common address of the anycast loopback. Which way is
correct?

DOCCD example
_______________________

lo0 (anycast ip)
10.0.0.1

lo1
10.1.1.1

 ip msdp peer 10.1.1.2 connect-source loopback 1
 ip msdp originator-id loopback 1

Solutions guide example would be similar to this
___________________

lo0 (anycast ip)
10.0.0.1

lo1
10.1.1.1
ip msdp peer 10.1.1.2 connect-source loopback 1
ip msdp originator-id lo0

Also my next question. I have R6 and R7 directly connected and setup
as Anycast RP peers using BSR. Cat1 + 2 are attached to R7, and Cat 3
+ 4 are attached to R6. R6 and R7 are each joined to a group
(239.0.0.6 and 239.0.0.7). I can ping both addresses from all 4 Cats
but the ones attached to R7 won't show an RP address.

Cat4 can ping the far routers group and shows an RP.
___________________
Cat4(config-if)#do ping 239.0.0.7

Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 239.0.0.7, timeout is 2 seconds:

Reply to request 0 from 67.6.7.7, 8 ms
Cat4(config-if)#do show ip pim rp
Group: 239.0.0.7, RP: 67.67.67.67, v2, uptime 00:34:12, expires 00:02:23

Cat2 can ping the far routers group but shows no RP
_________________________________________

Cat2(config-router)#do ping 239.0.0.6

Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 239.0.0.6, timeout is 2 seconds:

Reply to request 0 from 67.6.7.6, 8 ms
Cat2(config-router)#do show ip pim rp

Cat2(config-router)#

I have checked that the router is the DR for the pim relationship.

Cat2(config-router)#do show ip pim nei
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
      P - Proxy Capable, S - State Refresh Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
67.12.7.7 Vlan712 00:53:20/00:01:33 v2 100/ DR S P
67.12.7.111 Vlan712 01:17:08/00:01:33 v2 1 / S P

R7 itself seems to see it has RPs

R7#show ip pim rp
Group: 239.0.0.6, RP: 67.67.67.67, v2, next RP-reachable in 00:01:03
Group: 239.0.0.7, RP: 67.67.67.67, v2, next RP-reachable in 00:01:03

It is configured as the BSR and RP

R7#show ip pim bsr
PIMv2 Bootstrap information
This system is the Bootstrap Router (BSR)
  BSR address: 67.67.67.67 (?)
  Uptime: 00:39:04, BSR Priority: 0, Hash mask length: 0
  Next bootstrap message in 00:00:56
  Candidate RP: 67.67.67.67(Loopback67)
    Holdtime 150 seconds
    Advertisement interval 60 seconds
    Next advertisement in 00:00:47

Now if I change it to sparse-mode instead of sparse-dense, then I do
show an RP. But the address is wrong.

Cat2(config-if)#do show ip pim rp
Group: 239.0.0.6, RP: 0.0.0.0
Group: 239.0.0.7, RP: 0.0.0.0

Any ideas?

Thank you,

Marc

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Received on Wed Sep 07 2011 - 22:29:17 ART