multicast-ecmp enable

Use multicast-ecmp enable to enable multicast Equal Cost Multiple Path (ECMP).

Use undo multicast-ecmp enable to disable multicast ECMP.

Syntax

multicast-ecmp enable

undo multicast-ecmp enable

Default

Multicast ECMP is disabled.

Views

TRILL view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

TRILL distribution trees support ECMP, also known as multicast ECMP. When multicast ECMP is disabled, because the topologies of TRILL distribution trees are different, traffic can be load shared. However, equal-cost links are not used for load sharing. When multicast ECMP is enabled, TRILL can assign equal-cost links to different TRILL distribution trees. This improves the load sharing performance.

Make sure the multicast ECMP status is the same on all RBs in the TRILL network. Otherwise, multicast, broadcast, and unknown unicast frames might fail to be forwarded.

Examples

# Enable multicast ECMP.

<Sysname> system-view
[Sysname] trill
[Sysname-trill] multicast-ecmp enable