Quick Reference Guide

482 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
PIM Sparse
19
PowerConnect(config)#router pim
PowerConnect(config-pim-router)#bsr-candidate ethernet 2 30 255
BSR address: 207.95.7.1, hash mask length: 30, priority: 255
This command configures the PIM Sparse interface on port 2 as a BSR candidate, with a hash
mask length of 30 and a priority of 255. The information shown in italics above is displayed by the
CLI after you enter the candidate BSR configuration command.
Syntax: [no] bsr-candidate ethernet [<portnum> | loopback <num> | ve <num>
<hash-mask-length> [<priority>]
The <portnum> | loopback <num> | ve <num> parameter specifies the interface. The Layer 3
Switch will advertise the specified interface IP address as a candidate BSR:
• Enter ethernet <portnum> for a physical interface (port).
• Enter ve <num> for a virtual interface.
• Enter loopback <num> for a loopback interface.
The <hash-mask-length> parameter specifies the number of bits in a group address that are
significant when calculating the group-to-RP mapping. You can specify a value from 1 – 32.
NOTE
Dell recommends you specify 30 for IP version 4 (IPv4) networks.
The <priority> specifies the BSR priority. You can specify a value from 0 – 255. When the election
process for BSR takes place, the candidate BSR with the highest priority becomes the BSR. The
default is 0.
Configuring RPs
Enter a command such as the following to configure the Layer 3 Switch as a candidate RP.
PowerConnect(config-pim-router)#rp-candidate ethernet 2
Syntax: [no] rp-candidate ethernet<portnum> | loopback <num> | ve <num>
The <portnum> | loopback <num> | ve <num> parameter specifies the interface. The Layer 3
Switch will advertise the specified interface IP address as a candidate RP:
• Enter ethernet <portnum> for a physical interface (port).
• Enter ve <num> for a virtual interface.
• Enter loopback <num> for a loopback interface.
By default, this command configures the Layer 3 Switch as a candidate RP for all group numbers
beginning with 224. As a result, the Layer 3 Switch is a candidate RP for all valid PIM Sparse group
numbers. You can change this by adding or deleting specific address ranges. The following example
narrows the group number range for which the Layer 3 Switch is a candidate RP by explicitly adding
a range.
PowerConnect(config-pim-router)#rp-candidate add 224.126.0.0 16
Syntax: [no] rp-candidate add <group-addr> <mask-bits>
The <group-addr> <mask-bits> specifies the group address and the number of significant bits in
the subnet mask. In this example, the Layer 3 Switch is a candidate RP for all groups that begin
with 224.126. When you add a range, you override the default. The Layer 3 Switch then becomes a
candidate RP only for the group address ranges you add.