Flags SF with Dense Mode

From: gladston@br.ibm.com
Date: Thu Sep 30 2004 - 10:26:11 GMT-3

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Even in dense-mode, if there is a RP configured, the flag appear as SF on (*,G).
I was expecting the flag to be D.

Any comments?

Without RP configured:

r1#sh ip mroute
(*, 239.1.1.1), 00:00:33/00:02:59, RP 0.0.0.0, flags: D
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Serial0/0.12, Forward/Dense, 00:00:33/00:00:00

(172.16.16.6, 239.1.1.1), 00:00:33/00:03:29, flags: TA
  Incoming interface: FastEthernet0/0.16, RPF nbr 0.0.0.0
  Outgoing interface list:
    Serial0/0.12, Forward/Dense, 00:00:34/00:00:00

With RP configured:

r1#c
Enter configuration commands, one per line. End with CNTL/Z.
r1(config)# ip pim rp-address 172.16.3.1
r1(config)#
r1#sh ip mroute
(*, 224.0.1.40), 00:00:02/00:00:00, RP 0.0.0.0, flags: SJCL
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Serial0/0.12, Forward/Dense, 00:00:02/00:00:00
    FastEthernet0/0.16, Forward/Dense, 00:00:02/00:00:00

(*, 239.1.1.1), 00:00:01/00:02:59, RP 172.16.3.1, flags: SF
  Incoming interface: Null, RPF nbr 0.0.0.0
  Outgoing interface list:
    Serial0/0.12, Forward/Dense, 00:00:01/00:00:00

(172.16.16.6, 239.1.1.1), 00:00:01/00:02:58, flags: FTA
  Incoming interface: FastEthernet0/0.16, RPF nbr 0.0.0.0
  Outgoing interface list:
    Serial0/0.12, Forward/Dense, 00:00:03/00:00:00

r1#

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