RE: Multicast (*,G) question

From: Vincent Mashburn (vmashburn@fedex.com)
Date: Fri Sep 29 2006 - 10:05:32 ART


From looking at the flags "LJT", it looks like it is switching to the
SPT. The SPT does not necessarily take the same path as the shared
tree. Therefore, if all traffic is taking the shortest path, no traffic
will take the shared path. You can test this by changing the
spt-threshhold to infinity.

Vince Mashburn
Voice / Data Engineer
901-263-5072
CCVP, CCNP, CCDA,Network +
Cisco IP Telephony Support Specialist
Cisco IP Telephony Operations Specialist
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ccielab@cox.net
Sent: Friday, September 29, 2006 4:23 AM
To: ccielab@groupstudy.com
Subject: Multicast (*,G) question

Can someone explain to me why the (*,G) entry below, displays the
"stopped"
indication,
after a source (S,G) entry is obtained?
Is this correct behavior?

Thanks

(*, 225.1.1.1), 00:23:27/stopped, RP 1.1.1.1, flags: SJCL
  Incoming interface: Tunnel0, RPF nbr 192.168.1.1, Mroute
  Outgoing interface list:
    Loopback222, Forward/Sparse-Dense, 00:23:27/00:02:25

(1.1.1.1, 225.1.1.1), 00:01:13/00:02:04, flags: LJT
  Incoming interface: Tunnel0, RPF nbr 192.168.1.1, Mroute
  Outgoing interface list:
    Loopback222, Forward/Sparse-Dense, 00:01:13/00:02:25

(*, 224.0.1.40), 00:23:27/00:02:21, RP 1.1.1.1, flags: SJCL
  Incoming interface: Tunnel0, RPF nbr 192.168.1.1, Mroute
  Outgoing interface list:
    Loopback222, Forward/Sparse-Dense, 00:23:27/00:02:21



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