Redundant Multicast DEPI Pool
In DS sharing, the DS controller of the secondary line card uses the same multicast IP address as the primary line card DS controller. For a single RPD, the principal and standby Cores use different source IP addresses, but same group IP address in a multicast group. However, the NCS switch does not support one Group with multiple Sources in a multicast group. Hence, you must assign additional multicast IP addresses for standby cores.
Assign the additional multicast IP addresses to the DS controllers on the secondary line cards if the secondary line card is up.
When you enable the redundant multicast DEPI pool, the secondary line card is up in the redundancy line card group and the multicast IP addresses are assigned to secondary line card from the redundant multicast pool. All RPDs on standby cores are automatically cleared to be offline and later online again.
When you disable the redundant multicast pool, the IP addresses are removed from the redundant multicast pool, and all the RPD standby cores are cleared automatically. If you do not configure redundant pool, the secondary line card downstream controllers use the same IP as the downstream controllers in the primary line card.
You cannot use the redundant multicast pool in the downstream controller profile configuration.
Multicast IP address for the secondary line card is assigned based on the DS controller and the TenGE port. One DS controller can be assigend 8 IPv4/IPpv6 addresses from Tx/1/0 to Tex/1/7, where x is the secondary line card slot number. Hence, the redundant multicast DEPI pool needs a minimum of 266 IP addresses (32 controller for 8 ports for DOCSIS, 10 for OOB). If 266 IP addresses are not available, you can assign 4 IPv4/IPv6 addresses to the ports 0,2,4,6 on a single DS controller for multicast DEPI IP addresses on the secondary line card.
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