HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual page 587

ProCurve# show ip mroute
IP Multicast Routing Table
Flags:
bit Set,
F - Register, R - RP-bit Set
Timers: Uptime/Expires
(*, G) entry for the
(*, 239.255.255.1), 00:41:58/00:03:22, RP 10.1.1.1, Flags: SCJ
RP tree
Downstream
interfaces in the
RP tree.
Figure 11-24. Multicast Route for a Group for Which the Local Router is RP
ProCurve# show ip mroute
IP Multicast Routing Table
Flags:
bit Set,
F - Register, R - RP-bit Set
Timers: Uptime/Expires
(*, 239.255.1.1), 00:00:48/00:03:08, RP 10.1.1.2, Flags: SC
Figure 11-25. Null Incoming Interface List
S - Sparse, C - Connected, P - Pruned, J - Join SPT, T - SPT-
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
eth 0/1, Forward, 00:41:58/00:02:46
fr 1.2, Forward, 00:00:08/00:03:22
fr 1.3, Forward, 00:02:15/00:02:05
The incoming interface is also null when the router cannot determine the
upstream neighbor for the RP or source. Figure 11-25 illustrates an
example of this problem.
S - Sparse, C - Connected, P - Pruned, J - Join SPT, T - SPT-
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
eth 0/1, Forward, 00:00:48/00:03:08
Downstream
interface list is
correct.
View the router's unicast routing table as shown in Figure 11-26:
ProCurve# show ip route
Configuring Multicast Support with PIM-SM
The local router is RP, so it
does not have an upstream
RP neighbor.
The incoming interface list is null,
so the router does not send
joins for the tree.
The router also drops traffic
that it receives for this group.
Troubleshooting PIM-SM
The RP will join an
SP tree when it
receives traffic
from a source.
The local router,
10.3.3.2, is not
RP.
11-59