Cisco ASR 9000 Series System Configuration Manual page 115

Configuring Multicast Offload on the Satellite nV System
Note
• Transport types:
• Hardware:
Prerequisites:
All existing hardware and software prerequisites for multicast support on the Host are applicable. Similarly,
all existing hardware and software prerequisites for the simple ring and dual host topologies are applicable.
In addition, the offload feature is not backward image or device compatible. Hence, before enabling offload,
all devices in the system need to be upgraded to Cisco IOS XR Software Release 5.2.2 and compatible satellite
image binaries. Also, only the supported hardware needs to be included in the ring as a mixed mode is not
supported.
For better convergence and redundancy for connectivity failures to the Satellite Hosts or the core, the IGMP
snoop sync feature needs to be mandatorily turned on for the redundancy group of the Dual Host System.
Otherwise, there can be traffic drops when the Designated multicast forwarder picked by satellite does not
align to the Unicast Active Host.
For information on bidirectional sync on dual-homed satellites using IGMP Snooping, see the Bidirectional
Note
Internet Group Management Protocol Snoop Synchronization for Satellite Dual-Homed System section
in Cisco ASR 9000 Series Aggregation Services Router Multicast Configuration Guide
Only these two core topology variants are supported:
• L2 access and L2 core with Satellite Host providing only Layer 2 bridging
functionality.
• L2 access and L3 core connected over BVI on the Satellite Host.
There is no support for Hub and Spoke (non-network Satellite nV) mode or L2 fabric
links.
• MVPN-MLDP Inband
• MVPN-GRE
• MVPN-P2MP-TE
• L2 bridging, VPLS
• VPLS LSM
• Native multicast under BVI for PIM, MLDP, and P2MP-TE
• MVPN IRB with PIM, MLDP, and P2MP-TE core tree type
◦ Only Cisco ASR9000v and Cisco ASR9000v-V2 satellite hardware support this functionality in
Cisco IOS XR Software Release 5.2.2.
Cisco ASR 9000 Series Aggregation Services Router nV System Configuration Guide, Release 5.3.x
Scope and Prerequisites
105