C
HAPTER
46
| Multicast Routing Commands
PIM Multicast Routing
– 1102 –
IP address of the designated VLAN is sent as the candidate’s BSR
address. Each neighbor receiving the bootstrap message compares the
BSR address with the address from previous messages. If the current
address is the same or a higher address, it accepts the bootstrap
message and forwards it. Otherwise, it drops the message.
â—† This router will continue to be the BSR until it receives a bootstrap
message from another candidate with a higher priority (or a higher IP
address if the priorities are the same).
â—† To improve failover recovery, it is advisable to select at least two core
routers in diverse locations, each to serve as both a candidate BSR and
candidate RP. It is also preferable to set up one of these routers as both
the primary BSR and RP.
EXAMPLE
The following example configures the router to start sending bootstrap
messages out of the interface for VLAN 1 to all of its PIM-SM neighbors.
Console(config)#ip pim bsr-candidate interface vlan 1 hash 20 priority 200
Console(config)#exit
Console#show ip pim bsr-router
PIMv2 Bootstrap information
BSR address : 192.168.0.2/32
Uptime : 00:00:08
BSR Priority : 200
Hash mask length : 20
Expire : 00:00:57
Role : Candidate BSR
State : Elected BSR
Console#
ip pim register-rate-
limit
This command configures the rate at which register messages are sent by
the Designated Router (DR) for each (source, group) entry. Use the no
form to restore the default value.
SYNTAX
ip pim register-rate-limit rate
no ip pim register-rate-limit
rate - The maximum number of register packets per second.
(Range: 1-65535: Default: 0, which means no limit)
DEFAULT SETTING
0
COMMAND MODE
Global Configuration
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