Chapter 51
| Multicast Routing Commands
PIM Multicast Routing
– 1195 –
Default Setting
Hash Mask Length: 10
Priority: 0
Command Mode
Global Configuration
Command Usage
â—† When the ip pim bsr-candidate command is entered, the router starts sending
bootstrap messages to all of its PIM-SM neighbors. The 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#
To Next Page
Loading...
Need help?
General