vsx-sync mclag-interfaces


vsx-sync mclag-interfaces

no vsx-sync mclag-interfaces


Enables the VSX synchronization of VSX LAG interface associations and attributes on the primary VSX switch to the secondary peer switch. The term MCLAG has now been replaced by VSX LAG.

The no form of this command removes VSX synchronization of global VSX LAG and attributes, but it does not remove the existing VSX LAG feature configurations from the secondary peer switch.

Command context





The VSX LAG interface associations and attributes that support VSX synchronization are:

Supported interface associations:
  • Access lists

  • Policies

  • QoS

  • Rate limits

  • VLANs

Supported attributes:
  • Description

  • LACP

  • Loop-protect

  • QoS trust

This configuration overrides the existing VSX synchronization associations created under the VSX LAG interface context. Also with this configuration, the system blocks further configuration of VSX synchronization associations under the VSX LAG context.


The first line in the following example shows the setting of a VSX LAG. The last two lines of the example show the enabling of VSX synchronization for VSX LAG interface associations and attributes.

switch(config)# interface lag 1 multi-chassis
switch(config-if)# exit
switch(config)# vsx
switch(config-vsx)# vsx-sync mclag-interfaces

Disabling the VSX synchronization of VSX LAG interface associations and attributes:

switch(config)# vsx
switch(config-vsx)# no vsx-sync mclag-interfaces