configure forwarding vpex vlan-port-filter

configure forwarding vpex vlan-port-filter [hash-table | port-group]


Selects the way VLAN membership is implemented for Extended Edge Switching extended ports.

Syntax Description


Specifies Extended Edge Switching.

vlan-port-filter Select hardware mechanism to enforce VLAN port membership.
hash-table Use hash table for VLAN port membership when different VLANs do not share many ports (default).
port-group Use port group for VLAN port membership when different VLANs share many ports and there is a requirement for large VLAN scale.


Hash table is the default behavior.

Usage Guidelines

In Extended Edge Switching hardware, the extended ports are represented as virtual ports. The VLAN membership of extended ports can be implemented in two ways:
  • Hash table with VLAN and virtual port as key. Note that hash tables can lead to hash collisions at higher scale. (Default)
  • Virtual port group. Programming the same group number in the VLAN table and virtual port table indicates membership. The hardware has 64 virtual port groups. You should select this option if many VLANs share the same extended ports.
Note that changing this configuration at run time could result in temporary loss of traffic while the tables are reprogrammed. It is preferable to identify which option works best for the particular topology and leave the setting unchanged during runt ime or schedule the change during a maintenance window.

To see what setting you have selected with this command, see show forwarding configuration.


The following example selects a virtual port group to define VLAN membership:
# configure forwarding vpex vlan-port-filter port-group


This command was first available in ExtremeXOS 22.6.

Platform Availability

This command is available on the ExtremeSwitching X670-G2 , X465 , X690, X590, 5420, 5520 series switches.