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vlan-prune

 

Syntax

Hierarchy Level

Release Information

Statement introduced in Junos OS Release 12.3 for EX Series switches.

Description

Prune the Virtual Chassis port (VCP) paths in a Virtual Chassis to ensure received broadcast, multicast, and unknown unicast traffic in a VLAN uses the shortest possible path through the Virtual Chassis to the egress VLAN interface.

By default, all broadcast, multicast, and unknown unicast traffic in a VLAN on an EX Series Virtual Chassis is broadcast to all member switches in the Virtual Chassis. This behavior unnecessarily consumes bandwidth within the Virtual Chassis because unneeded traffic is sent to all Virtual Chassis member switches.

Enabling this option allows you to conserve bandwidth within the Virtual Chassis. Broadcast, multicast, and unknown unicast traffic still enters and exits the Virtual Chassis within the same VLAN, without the added bandwidth consumption that results from broadcasting this traffic to all member switches.

Default

Disabled

Required Privilege Level

system—To view this statement in the configuration.

system-control—To add this statement to the configuration.