NEC IP8800/S2400 Series Troubleshooting Manual page 127

Table 3-23: BSR Check Items
No. Troubleshooting Steps and Command
1 Confirm that this system is a candidate for BSR.
show ip pim bsr
2 Confirm that this system is BSR.
show ip pim bsr
(3) Rendezvous point router check items
The table below shows the items to be checked when this system is the rendezvous point router in the IPv4 PIM-SM
network configuration.
Table 3-24: Rendezvous Point Router Check Items
No. Troubleshooting Steps and Command
1 Confirm that this system is a candidate of rendezvous point for
the relay target group address.
show ip pim rp-mapping
2 Confirm that this system is the rendezvous point for the relay
target group address.
show ip pim rp-hash <Group Address>
(4) last-hop-router check items
The table below shows the items to be checked when this system is the last-hop-router in the IPv4 PIM-SM network
configuration.
Table 3-25: last-hop-router Check Items
No. Troubleshooting Steps and Command
1 Confirm that IGMP is running on the interface connected to
the multicast receiver.
show ip igmp interface
2 Confirm that the multicast receiver participates in the relay
target group via IGMP.
show ip igmp group
3 If there is an interface in which the relay target group
participates, confirm that this system is DR.
show ip pim interface
3.
Troubleshooting Functional Failures in Operation
Action
If this system is not a candidate for BSR, check the
configuration and set the configuration to run this system as a
candidate for BSR. Since this system does not run as a
candidate for BSR if no address is set for the loopback
interface, confirm that an address is set for the loopback
interface.
If this system is not BSR, check the priority of other BSR
candidates. The larger the value, the higher the priority. If the
same priority is provided, the BSR candidate with the largest
BSR address becomes BSR.
Action
If this system is not a candidate of rendezvous point for the
relay target group address, check the configuration and set the
configuration to run this system as a candidate of rendezvous
point for the relay target group address. Since this system does
not run as a candidate of rendezvous point if no address is set
for the loopback interface, confirm that an address is set for
the loopback interface.
If this system is not the rendezvous point, check the priority of
other candidates of rendezvous point. The smaller the value,
the higher the priority. If the priority of another candidate of
rendezvous point is higher, this system does not run as the
rendezvous point. If the same priority is provided, the
rendezvous point is distributed for each group address
according to the protocol specifications and this system may
not run as the rendezvous point. To run this system
preferentially as the rendezvous point, set the priority higher
than those of other rendezvous point candidates.
Action
If IGMP is not running, check the configuration and set the
configuration to run IGMP.
If the multicast receiver does not participate in the relay target
group, check the setting of the multicast receiver.
If this system is not DR, check DR of the relay target interface.
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