configure forwarding vpex
vlan-port-filter
configure forwarding vpex
vlan-port-filter [hash-table | port-group]
Description
Selects the way VLAN membership is implemented for Extended Edge
Switching
extended ports.
Syntax Description
| vpex |
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. |
Default
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.
Example
The following example selects a virtual port group to define VLAN
membership:
# configure forwarding vpex vlan-port-filter port-group
History
This command was first available in ExtremeXOS 22.6.
Platform Availability
This command is available on ExtremeSwitching 5420 and 5520
series switches, and Extreme 7520-48Y switches.
