Multicast Replication; Hqos Correlation - Cisco ASR 9000 Series Configuration Manual

Multicast Replication

Command or Action
Step 3
vrf vrf_name
Example:
RP/0/RSP0/CPU0:router(config)# vrf vrf1
Step 4 address-family ipv4
Example:
RP/0/RSP0/CPU0:router(config)#
address-family ipv4
Step 5
Use the commit or end command.
Enabling Address Family for the VRF: An example
multicast-routing
vrf vrf1
address-family ipv4
!
!
end
Multicast Replication
BNG supports the multicast packet replication on PPPoE interfaces. It also supports multicast forwarding on
subscriber interfaces, and transmission of multicast IP video content. When the multicast replication is enabled
for a subscriber, BNG performs IGMP statistics gathering for that subscriber, and has the ability to export
them. Multicast replication is supported on subscriber interfaces, which are configured in the passive mode.

HQoS Correlation

The Hierarchical quality of service (HQoS) correlation feature monitors every subscriber's multicast bandwidth
usage through IGMP reports received on each subscriber's PPPoE session, and limits the unicast bandwidth
usage, to leave enough bandwidth for multicast traffic. This is useful when the multicast traffic and unicast
traffic share the same physical link to the subscriber in the last mile, when the multicast and unicast traffic
are forwarded onto the last mile link by different devices. This feature is configured on BNG that forwards
the unicast traffic to the subscriber. Based on the IGMP reports received, BNG informs the unicast QoS shaper
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide,
Release 4.3.x
236
Purpose
Configures the vrf name.
Enables the multicast functions in the ipv4 address family.
commit—Saves the configuration changes and remains within the
configuration session.
end—Prompts user to take one of these actions:
• Yes— Saves configuration changes and exits the
configuration session.
• No—Exits the configuration session without committing the
configuration changes.
• Cancel—Remains in the configuration mode, without
committing the configuration changes.
Configuring Subscriber Features
OL-28375-03