PIM Dense mode RP issue

hi,
i am running 3 routers on Ethernet link. all the routers are in pim dense
mode but getting reports and messages for 224.0.1.40. As for as i know there
is no RP in pim dense mode.

R1
debug ip igmp
*Mar 1 00:33:06.571: IGMP(0): Received v2 Report on FastEthernet0/0 from
155.1.146.6 for 224.0.1.40
*Mar 1 00:33:06.575: IGMP(0): Received Group record for group 224.0.1.40,
mode 2 from 155.1.146.6 for 0 sources
*Mar 1 00:33:06.579: IGMP(0): Cancel report for 224.0.1.40 on
FastEthernet0/0
*Mar 1 00:33:06.583: IGMP(0): Updating EXCLUDE group timer for 224.0.1.40
*Mar 1 00:33:06.583: IGMP(0): MRT Add/Update FastEthernet0/0 for
(*,224.0.1.40) by 0

RSRack1R1#sh ip igmp interface
FastEthernet0/0 is up, line protocol is up
  Internet address is 155.1.146.1/24
  IGMP is enabled on interface
  Current IGMP host version is 2
  Current IGMP router version is 2
  IGMP query interval is 60 seconds
  IGMP querier timeout is 120 seconds
  IGMP max query response time is 10 seconds
  Last member query count is 2
  Last member query response interval is 1000 ms
  Inbound IGMP access group is not set
  IGMP activity: 1 joins, 0 leaves
  Multicast routing is enabled on interface
  Multicast TTL threshold is 0
  Multicast designated router (DR) is 155.1.146.6
  IGMP querying router is 155.1.146.1 (this system)
  Multicast groups joined by this system (number of users):
      224.0.1.40(1)

RSRack1R1#sh ip mroute
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry,
       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
       U - URD, I - Received Source Specific Host Report,
       Z - Multicast Tunnel, z - MDT-data group sender,
       Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
 Timers: Uptime/Expires
 Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 224.0.1.40), 00:17:48/00:02:47, RP 0.0.0.0, flags: DCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    FastEthernet0/0, Forward/Dense, 00:17:48/00:00:00

RSRack1R1#sh ip pim int

Address Interface Ver/ Nbr Query DR DR
                                          Mode Count Intvl Prior
155.1.146.1 FastEthernet0/0 v2/D 2 30 1
 155.1.146.6

I cannot understand this behaviour any help will be appreciated.

Best Regards,

Nadeem Rafi

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Received on Tue Dec 01 2009 - 00:46:04 ART