Users Guide

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Candidate BSR address: 10.1.1.8, priority: 255, hash mask length: 31
Next Cand_RP_advertisement in 00:00:50
RP: 10.1.2.8(loopback10)
To view RP-mapping details:
OS10# show ip pim rp mapping
Group(s) : 225.1.1.0/24
RP : 10.1.2.8, v2
Info source: 10.1.1.8, via bootstrap, priority 0
expires: 00:00:00
4. (Optional) Configure the RP timers.
OS10(config)# ip pim rp-candidate-timers loopback 10 advt-interval 10 hold-time 25
To view candidate RP details:
OS10# show ip pim bsr-router
This system is the Bootstrap Router (v2)
BSR address: 10.1.1.8
BSR Priority: 255, Hash mask length: 31
Next bootstrap message in 00:00:00
This system is a candidate BSR
Candidate BSR address: 10.1.1.8, priority: 255, hash mask length: 31
Next Cand_RP_advertisement in 00:00:09
RP: 10.1.2.8(loopback10)
To view RP-mapping details:
OS10# show ip pim rp mapping
Group(s) : 225.1.1.0/24
RP : 10.1.2.8, v2
Info source: 10.1.1.8, via bootstrap, priority 23
expires: 00:01:04
Configure designated router priority
Multiple PIM-SM routers can connect to a single local area network (LAN) segment. One of these routers is elected as the
designated router (DR).
The DR is elected using hello messages. Each PIM router learns about its neighbors by periodically sending a hello message from
each PIM-enabled interface. Hello messages contain the interface IP address from where it is sent and a DR priority value. The
router with the highest priority value becomes the DR. If the priority value is the same for two routers, the router with the
highest IP address is the DR. By default, the DR priority value is 1, so the IP address determines the DR.
To configure DR priority, use the following command:
OS10# configure terminal
OS10(config)# interface vlan 100
OS10(conf-if-vl-100)# ip pim dr-priority 200
Update RP mapping cache with new RP configuration
If you make changes to the RP configuration, the system continues to use the old RP until the next BSR advertisement arrives.
To clear the group-to-RP mapping entries from the RP mapping cache, use the clear ip pim rp-mapping command.
This command removes only the group-to-RP mapping entries learned through the BSR updates. The system downloads the
group-to-RP mapping entries at the next BSR update.
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