DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Enters multicast routing configuration mode.multicast-routing [address-family {ipv4 | ipv6}]
Step 2
Example:
RP/0/RP0/CPU0:router(config)#
•
The following multicast processes are started: MRIB,
MFWD, PIM, IGMP, and MLD.
•
For IPv4, IGMP version 3 is enabled by default; for IPv6,
MLD version 1 is enabled by default.
multicast-routing
Enables multicast routing and forwarding on all new and
existing interfaces.
interface all enable
Example:
RP/0/RP0/CPU0:router(config-mcast-ipv4)#
interface all enable
Step 3
Exits multicast routing configuration mode, and returns the
router to the source configuration mode.
exit
Example:
RP/0/RP0/CPU0:router(config-mcast-ipv4)# exit
Step 4
(Optional) Enters router IGMP configuration mode (for IPv4
hosts), or enters router MLD configuration mode (for IPv6
hosts).
Use router { igmp} for IPv4 hosts or use router {
mld} for IPv6
Example:
RP/0/RP0/CPU0:router(config)# router igmp
Step 5
RP/0/RP0/CPU0:router(config)# router mld
(Optional) Selects the IGMP or MLD version that the router
interface uses.
version {1 | 2 | 3} for IPv4 (IGMP) hosts or version
{1 | 2} for IPv6 (MLD) hosts.
Step 6
Example:
RP/0/RP0/CPU0:router(config-igmp)# version 3
RP/0/RP0/CPU0:router(config-mld)# version 2
•
The version range for IGMP is 1-3; the range for MLD is
1-2.
•
The default for IGMP is version 3; the default for MLD
is version 1.
•
Host receivers must support IGMPv3 for PIM-SSM
operation.
•
If this command is configured in router IGMP or router
MLD configuration mode, parameters are inherited by all
new and existing interfaces. You can override these
parameters on individual interfaces from interface
configuration mode.
commit
Step 7
Cisco IOS XR Multicast Configuration Guide for the Cisco CRS Router, Release 5.2.x
70
Implementing Multicast Routing on Cisco IOS XR Software
Configuring PIM-SM and PIM-SSM
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