multicast replicate-mode

Use multicast replicate-mode to configure the multicast replication mode.

Use undo multicast replicate-mode to restore the default.

Syntax

multicast replicate-mode { head-end | tandem }

undo multicast replicate-mode

Default

Head-end replication is used.

Views

SPB I-SID view

Predefined user roles

network-admin

Parameters

head-end: Enables head-end replication mode.

tandem: Enables tandem replication mode.

Usage guidelines

SPBM supports head-end replication and tandem replication for broadcast, unknown unicast, and multicast traffic.

• Head-end replication—Replicates frames at the ingress BEB for frames to enter the SPBM network. This method is suitable for SPBM VSIs that have sparse multicast traffic. It does not require BCBs to maintain multicast FDB entries.

• Tandem replication—Replicates frames only at the node where the shortest path tree forks. This method is suitable for SPBM VSIs that have dense multicast traffic. It requires BCBs to maintain multicast FDB entries.

Examples

# Enables tandem replication.

<Sysname> system-view
[Sysname] vsi vpn1
[Sysname-vsi-vpn1] spb i-sid 256
[Sysname-vsi-vpn1-256] multicast replicate-mode tandem