Monitoring Rp Mapping; Troubleshooting Pimv1 And Pimv2 Interoperability Problems; Configuration Examples For Pim; Example: Enabling Pim Stub Routing - Cisco Catalyst 3650 Configuration Manual

Monitoring RP Mapping

Monitoring RP Mapping
Use the privileged EXEC commands in the following table to monitor RP mapping.
Table 16: RP Mapping Monitoring Commands
Command
show ip pim bsr
show ip pim bsr-router
show ip pim rp [ hostname or IP address | mapping
[ hostname or IP address | elected [hostname or IP
address] | in-use [hostname or IP address] ] | metric
[ hostname or IP address ] ]
show ip pim rp-hash hostname or IP group address

Troubleshooting PIMv1 and PIMv2 Interoperability Problems

When debugging interoperability problems between PIMv1 and PIMv2, check these in the order shown:
1 Verify RP mapping with the show ip pim rp-hash privileged EXEC command, making sure that all
systems agree on the same RP for the same group.
2 Verify interoperability between different versions of DRs and RPs. Make sure that the RPs are interacting
with the DRs properly (by responding with register-stops and forwarding decapsulated data packets from
registers).

Configuration Examples for PIM

Example: Enabling PIM Stub Routing

In this example, IP multicast routing is enabled, Switch A PIM uplink port 25 is configured as a routed uplink
port with spare-dense-mode enabled. PIM stub routing is enabled on the VLAN 100 interfaces and on Gigabit
Ethernet port 20.
Device(config)# ip multicast-routing distributed
Device(config)# interface GigabitEthernet3/0/25
Device(config-if)# no switchport
Device(config-if)# ip address 3.1.1.2 255.255.255.0
Device(config-if)# ip pim sparse-dense-mode
Device(config-if)# exit
Device(config)# interface vlan100
Device(config-if)# ip pim passive
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
156
Purpose
Displays information about the elected BSR.
Displays information about the BSRv2.
Displays how the device learns of the RP (through
the BSR or the Auto-RP mechanism).
Displays the RP that was selected for the specified
group.
Configuring PIM
OL-29890-01