Chapter 51
| Multicast Routing Commands
PIM Multicast Routing
– 1225 –
â—† The router with the highest priority configured on an interface is elected as the
DR. If more than one router attached to this interface uses the same priority,
then the router with the highest IP address is elected to serve as the DR.
â—† If a router does not advertise a priority in its hello messages, it is assumed to
have the highest priority and is elected as the DR. If more than one router is not
advertising its priority, then the router with the highest IP address is elected to
serve as the DR.
Example
This example sets the priority used in the bidding process for the DR.
Console(config)#interface vlan 1
Console(config-if)#ipv6 pim dr-priority 20
Console(config-if)#end
Console#show ipv6 pim interface
PIM is enabled.
VLAN 1 is up.
PIM Mode : Sparse Mode
IPv6 Address : FE80::200:E8FF:FE93:82A0
Hello Interval : 30 sec
Hello HoldTime : 105 sec
Triggered Hello Delay : 5 sec
Join/Prune Holdtime : 210 sec
Lan Prune Delay : Disabled
Propagation Delay : 500 ms
Override Interval : 2500 ms
DR Priority : 20
Join/Prune Interval : 60 sec
Console#
ipv6 pim
join-prune-interval
This command sets the join/prune timer. Use the no form to restore the default
setting.
Syntax
ipv6 pim join-prune-interval seconds
no ipv6 pim join-prune-interval
seconds - The interval at which join/prune messages are sent.
(Range: 1-65535 seconds)
Default Setting
60 seconds
Command Mode
Interface Configuration (VLAN)
Command Usage
â—† By default, the switch sends join/prune messages every 210 seconds to inform
other PIM-SM routers about clients who want to join or leave a multicast group.
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