Configuring Auto-Rp - Cisco WS-C3750-48PS-S Software Configuration Manual

Configuring IP Multicast Routing

Configuring Auto-RP

Auto-RP uses IP multicast to automate the distribution of group-to-RP mappings to all Cisco routers and
multilayer switches in a PIM network. It has these benefits:
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If you configure PIM in sparse mode or sparse-dense mode and do not configure Auto-RP, you must
Note
manually configure an RP as described in the
on page
If routed interfaces are configured in sparse mode, Auto-RP can still be used if all devices are configured
Note
with a manual RP address for the Auto-RP groups.
These sections describe how to configure Auto-RP:
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For overview information, see the
Setting up Auto-RP in a New Internetwork
If you are setting up Auto-RP in a new internetwork, you do not need a default RP because you configure
all the interfaces for sparse-dense mode. Follow the process described in the
Existing Sparse-Mode Cloud" section on page
PIM router as the RP for the local group.
Adding Auto-RP to an Existing Sparse-Mode Cloud
This section contains some suggestions for the initial deployment of Auto-RP into an existing
sparse-mode cloud to minimize disruption of the existing multicast infrastructure.
Catalyst 3750 Switch Software Configuration Guide
36-14
It is easy to use multiple RPs within a network to serve different group ranges.
It provides load splitting among different RPs and arrangement of RPs according to the location of
group participants.
It avoids inconsistent, manual RP configurations on every router and multilayer switch in a PIM
network, which can cause connectivity problems.
36-12.
Setting up Auto-RP in a New Internetwork, page 36-14
Adding Auto-RP to an Existing Sparse-Mode Cloud, page 36-14
Preventing Join Messages to False RPs, page 36-16
Filtering Incoming RP Announcement Messages, page 36-17
"Manually Assigning an RP to Multicast Groups" section
(optional)
(optional)
"Auto-RP" section on page
36-14. However, omit Step 3 if you want to configure a
Chapter 36 Configuring IP Multicast Routing
(optional)
(optional)
36-5.
"Adding Auto-RP to an
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