Multicast Services; Multicast Coexistence; Enabling Address Family For The Vrf - Cisco ASR 9000 Series Configuration Manual

Configuring Subscriber Features

Multicast Services

Multicast services enable multiple subscribers to be recipients of a single transmission from one source. For
example, real-time audio and video conferencing makes good use of a multicast service. The multicast features
applied on the PPPoE interfaces of BNG includes:

Multicast Coexistence

On BNG, the multicast services coexist with regular unicast services. The multicast feature on BNG is the
same as the existing L3 multicast feature already supported on the Cisco ASR 9000 Series Routers. On BNG,
multicast is enabled on the trunk interfaces, and the VLANs created over physical interfaces and bundles.
Multicast co-existence works for PPPoE PTA subscriber sessions. For more details on multicast implementation
on ASR9k, see Implementing Layer-3 Multicast Routing on Cisco IOS XR Software chapter in Cisco ASR 9000
Series Aggregation Services Router Multicast Configuration Guide.
To enable multicast function on BNG, see

Enabling Address Family for the VRF

Perform this task to enable multicast functions for the required address family.
SUMMARY STEPS
1. configure
2. multicast-routing
3. vrf vrf_name
4. address-family ipv4
5. Use the commit or end command.
DETAILED STEPS
Command or Action
Step 1
configure
Example:
RP/0/RSP0/CPU0:router# configure
Step 2 multicast-routing
Example:
RP/0/RSP0/CPU0:router(config)# multicast
routing
Step 3 vrf vrf_name
Example:
RP/0/RSP0/CPU0:router(config)# vrf vrf1
OL-26148-02
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide, Release
Enabling Address Family for the VRF, on page
Purpose
Enters global configuration mode.
Configures multicast-routing.
Configures the vrf name.
Multicast Services
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