Cisco XR 12000 Series Configuration Guide

Implementing Multicast Routing on Cisco IOS XR Software Cisco ASR 9000 Series Routers
Information About Implementing Multicast Routing
MCC-22
Multicast Configuration Guide
OL-
The following is a listing of commands (specified under the appropriate router submode) that use the
inheritance mechanism:
router pim
dr-priority
hello-interval
join-prune-interval
multicast-routing
version
query-interval
query-max-response-time
explicit-tracking
router mld
interface all disable
version
query-interval
query-max-response-time
explicit-tracking
router msdp
connect-source
sa-filter
filter-sa-request list
remote-as
ttl-threshold
Understanding Interface Configuration Inheritance Disablement
As stated elsewhere, Cisco IOS XR software allows you to configure multiple interfaces by applying
configurations within a multicast routing submode that can be inherited by all interfaces.
To override the inheritance feature on specific interfaces or on all interfaces, you can enter the
address-family IPv4 or IPv6 submode of multicast routing configuration mode, and enter the
interface-inheritance disable command together with the interface type interface-path-id or interface
all command. This causes PIM or IGMP protocols to disallow multicast routing and to allow only
multicast forwarding on those interfaces specified. However, routing can still be explicitly enabled on
specified individual interfaces.
The following configuration disables multicast routing interface inheritance under PIM and IGMP
generally, although forwarding enablement continues. The example shows interface enablement under
IGMP of GigabitEthernet 0/6/0/3:
RP/0/0/CPU0:router# multicast-routing address-family ipv4
RP/0/0/CPU0:router(config-mcast-default-ipv4)# interface all enable
RP/0/0/CPU0:router(config-mcast-default-ipv4)# interface-inheritance disable
!
!
RP/0/0/CPU0:router(config)# router igmp
RP/0/0/CPU0:router(config-igmp)# vrf default
RP/0/0/CPU0:router(config-igmp)# interface GigabitEthernet0/6/0/0
RP/0/0/CPU0:router(config-igmp-name-if)# router enable
For related information, see “Understanding Enabling and Disabling Interfaces”

Cisco XR 12000 Series Specifications

General

Brand	Cisco
Model	XR 12000 Series
Category	Network Router
Language	English