To display active rendezvous points ( RPs) that are cached with associated multicast routing entries, use the show ip pim rp command in user EXEC or privileged EXEC mode.
show ip pim [ vrf vrf-name] rp [ mapping[ elected| in-use ] | metric] [ rp-address]
Syntax Description
vrf vrf-name
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(Optional) Specifies the multicast VPN routing and forwarding (VRF) instance.
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mapping[ elected| in-use ]
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(Optional) Displays all group-to-RP mappings of which the router is aware. (either configured or learned from Auto-RP)
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metric
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(Optional) Displays the unicast routing metric to the RPs configured statically or learned via Auto-RP or the bootstrap router
(BSR).
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rp-address
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(Optional) Specifies the RP IP address.
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Command History
Release
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Modification
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Cisco IOS XE Gibraltar 16.12.1
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This command was introduced.
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Command Default
If no RP is specified, all active RPs are displayed.
Command Modes
User EXEC (>)
Privileged EXEC (#)
Usage Guidelines
The Protocol Independent Multicast (PIM) version known for an RP influences the type of PIM register messages (Version 1
or Version 2) that the router sends when acting as the designated router (DR) for an active source. If an RP is statically
configured, the PIM version of the RP is not set and the router, if required to send register packets, tries to send PIM Version
2 register packets. If sending PIM Version 2 packets fails, the router sends PIM Version 1 register packets.
The version of the RP displayed in the show ip pim rp command output can change according to the operations of the router. When the group is created, the version shown is for
the RP in the RP mapping cache. Later, the version displayed by this command may change. If this router is acting as a DR
for an active source, the router sends PIM register messages. The PIM register messages are answered by the RP with PIM register
stop messages. The router learns from these PIM register stop messages the actual PIM version of the RP. Once the actual PIM
version of the RP is learned, this command displays only this version. If the router is not acting as a DR for active sources
on this group, then the version shown for the RP of the group does not change. In this case, the PIM version of the RP is
irrelevant to the router because the version of the RP influences only the PIM register messages that this router must send.
When you enter the show ip pim rp mapping command, the version of the RP displayed in the output is determined only by the method through which an RP is learned. If
the RP is learned from Auto-RP then the RP displayed is either “v1” or “v2, v1.” If the RP is learned from a static RP definition,
the RP version is undetermined and no RP version is displayed in the output. If the RP is learned from the BSR, the RP version
displayed is “v2.”
Examples
The following is sample output from the show ip pim rp command:
Device# show ip pim rp
Group:227.7.7.7, RP:10.10.0.2, v2, v1, next RP-reachable in 00:00:48
The following is sample output from the show ip pim rp command when the mapping keyword is specified:
Device# show ip pim rp mapping
PIM Group-to-RP Mappings
This system is an RP (Auto-RP)
This system is an RP-mapping agent
Group(s) 227.0.0.0/8
RP 10.10.0.2 (?), v2v1, bidir
Info source:10.10.0.2 (?), via Auto-RP
Uptime:00:01:42, expires:00:00:32
Group(s) 228.0.0.0/8
RP 10.10.0.3 (?), v2v1, bidir
Info source:10.10.0.3 (?), via Auto-RP
Uptime:00:01:26, expires:00:00:34
Group(s) 229.0.0.0/8
RP 10.10.0.5 (mcast1.cisco.com), v2v1, bidir
Info source:10.10.0.5 (mcast1.cisco.com), via Auto-RP
Uptime:00:00:52, expires:00:00:37
Group(s) (-)230.0.0.0/8
RP 10.10.0.5 (mcast1.cisco.com), v2v1, bidir
Info source:10.10.0.5 (mcast1.cisco.com), via Auto-RP
Uptime:00:00:52, expires:00:00:37
The following is sample output from the show ip pim rp command when the metric keyword is specified:
Device# show ip pim rp metric
RP Address Metric Pref Metric Flags RPF Type Interface
10.10.0.2 0 0 L unicast Loopback0
10.10.0.3 90 409600 L unicast Ethernet3/3
10.10.0.5 90 435200 L unicast Ethernet3/3