Configuring Multicast Virtual Scheduling

Multicast virtual scheduling is user-level scheduling. When the total bandwidth of a user is limited, you can configure multicast virtual scheduling to adjust the bandwidth for unicast and multicast traffic, thus ensuring BTV service quality.

Usage Scenario

When the total bandwidth of a user is limited, you can configure multicast virtual scheduling to ensure the normal playback of a multicast program by adjusting the bandwidth for unicast traffic.

If multicast virtual scheduling is required in the MPLS multicast networking, the lower-layer devices must support IGMP FORK. For single-edge networking, configure the devices to forward the multicast data.

Pre-configuration Tasks

Before configuring the multicast virtual scheduling, complete the following tasks:

Configure users to access the network normally.
Allocate unicast bandwidth and multicast bandwidth for users through the device or the RADIUS server.
Configure users to subscribe to multicast programs.

Configuring a Multicast Program List: A multicast program list contains one or more multicast addresses for identifying one or more IPTV channels or programs.

Configuring Multicast Program Bandwidth: Configuring static bandwidth for multicast programs allows fixed bandwidth to be allocated to the multicast programs. Dynamic bandwidth adjustment ensures sufficient bandwidth resources for multicast programs when unicast service bandwidth exceeds the assured bandwidth.

Disabling Multicast Data Replication and Forwarding: On a dual-edge network where one edge only performs virtual scheduling of multicast traffic, and the received data is only used for bandwidth statistics collection rather than data replication and forwarding, you can disable the NetEngine 8000 F from replicating and forwarding multicast data. Then the other edge is responsible for forwarding multicast data.

Configuring Reserved Bandwidth for Unicast Services: The minimum reserved bandwidth for unicast services can be configured when the unicast bandwidth that exceeds the assured bandwidth is adjusted.

(Optional) Setting the Maximum Number of Multicast Programs that a User Is Allowed to Watch: A multicast program list records one or multiple multicast addresses that identify multicast programs. You can set the maximum number of multicast programs that a user is allowed to watch.

(Optional) Configuring Inter-VPN Multicast Virtual Scheduling: This section describes how to configure inter-VPN multicast virtual scheduling.

(Optional) Adjusting the Unicast CAR for Family Users: This section describes how to enable multicast virtual scheduling to adjust the unicast CAR for family users.

Verifying the Configuration: After multicast virtual scheduling is configured, you can view information about the multicast bandwidth and multicast program list.