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Chapter 45
Configuring IP Multicast Routing
Monitoring the RP Mapping Information
To monitor the RP mapping information, use these commands in privileged EXEC mode:
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Troubleshooting PIMv1 and PIMv2 Interoperability Problems
When debugging interoperability problems between PIMv1 and PIMv2, check these in the order shown:
1.
2.
Configuring Advanced PIM Features
These sections describe the optional advanced PIM features:
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Understanding PIM Shared Tree and Source Tree
By default, members of a group receive data from senders to the group across a single data-distribution
tree rooted at the RP.
delivered to the RP for distribution to group members joined to the shared tree.
OL-13270-06
show ip pim bsr displays information about the elected BSR.
show ip pim rp-hash group displays the RP that was selected for the specified group.
show ip pim rp [group-name | group-address | mapping] displays how the switch learns of the RP
(through the BSR or the Auto-RP mechanism).
Verify RP mapping with the show ip pim rp-hash privileged EXEC command, making sure that all
systems agree on the same RP for the same group.
Verify interoperability between different versions of DRs and RPs. Make sure the RPs are
interacting with the DRs properly (by responding with register-stops and forwarding decapsulated
data packets from registers).
Understanding PIM Shared Tree and Source Tree, page 45-39
Delaying the Use of PIM Shortest-Path Tree, page 45-41
Modifying the PIM Router-Query Message Interval, page 45-42
Figure 45-6
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
shows this type of shared-distribution tree. Data from senders is
Configuring Advanced PIM Features
(optional)
(optional)
45-39
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