Cisco Nexus 7000 Series Configuration Manual page 109

Configuring PIM and PIM6
If you configure multiple Auto-RP mapping agents, only one is elected as the mapping agent for the domain.
The elected mapping agent ensures that all candidate RP messages are sent out. All mapping agents receive
the candidate RP messages and advertise the same RP cache in their RP-discovery messages.
You can configure a candidate RP with the arguments and keywords described on this Table.
Table 17: Auto-RP Candidate RP Arguments and Keywords
Argument or Keyword
interface
group-list ip-prefix
scope ttl
interval
bidir
route-map policy-name
Tip
You should choose mapping agents and candidate RPs that have good connectivity to all parts of the PIM
domain.
To configure Auto-RP mapping agents and candidate RPs, follow these steps:
1. For each router in the PIM domain, configure whether that router should listen and forward Auto-RP
messages. A router configured as either a candidate RP or an Auto-RP mapping agent will automatically
listen to and forward all Auto-RP protocol messages, unless an interface is configured with the domain
border feature. For more information, see the Configuring PIM or PIM6 Sparse Mode.
2. Select the routers to act as mapping agents and candidate RPs.
3. Configure each mapping agent and candidate RP as described in this section.
Description
Interface type and number used to derive the IP
address of the candidate RP used in Bootstrap
messages.
Multicast groups handled by this RP. It is specified
in a prefix format.
Time-To-Live (TTL) value that represents the
maximum number of hops that RP-Discovery
messages are forwarded. This value can range from
1 to 255 and has a default of 32.
Note
Number of seconds between sending RP-Announce
messages. This value can range from 1 to 65,535 and
has a default of 60.
Note
If not specified, this RP will be in ASM mode. If
specified, this RP will be in Bidir mode.
Route-map policy name that defines the group prefixes
where this feature is applied.
Cisco Nexus 7000 Series NX-OS Multicast Routing Configuration Guide
Configuring Auto-RP
See the border domain feature in the
Configuring PIM or PIM6 Sparse Mode.
We recommend that you configure the
candidate RP interval to a minimum of 15
seconds.
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