Configuring an EVC to Transmit Multicast Services

Usage Scenario

• Configure an EVC to transmit Layer 2 multicast services.

  After a multicast data message is received on an interface in a broadcast domain (BD), the message is broadcast to all the other interfaces in the same BD, including the interfaces not connected to multicast data receivers. Such data broadcasting wastes bandwidth resources and may result in security issues. To resolve these issues, configure an EVC to implement on-demand Layer 2 multicast service transmission in a specific BD.

• Configure an EVC to transmit Layer 3 multicast services.

  An EVC applies to Layer 2 interfaces and does not support IP address configuration. To enable an EVC-capable BD to communicate with Layer 3 interfaces, configure a logical VBDIF interface for the BD. A VBDIF interface is a network-layer interface and supports IP address configuration. By configuring a VBDIF interface for a BD, you can enable an EVC to transmit Layer 3 multicast services , which simplifies network planning and management.

Pre-configuration Tasks

Before configuring an EVC to transmit multicast services, complete the following tasks:

• Establishing the EVC Model
• Configure a routing protocol so that devices can communicate at the network layer.