Understanding Control Link VLAN Tagging on a Chassis Cluster

For SRX Series branch devices (SRX100, SRX210, SRX220, SRX240, and SRX650), the existing virtual LAN (VLAN) tag used for control-link traffic will be replaced with the use of experimental Ether type 0x88b5. However, backward compatibility is also supported for devices that have already deployed chassis cluster with VLAN tagging in place.

• To toggle between VLAN and Ether type modes, use the following command:

  set chassis cluster control-link-vlan enable/disable

  Note: You must perform a reboot to initialize this configuration change.

• To show whether control port tagging is enabled or disabled, and to view the chassis cluster information, use the following command:

  show chassis cluster information

  user@host > show chassis cluster information

  Control tagging will get disabled whenever you execute set chassis cluster cluster-id 5 node 0 or 1 command.

  The following is a sample output of the command:

  node0
  -----------------------------------------------------
  Control link statistics:
      Control link 0:
                                     
  Fabric link statistics:
      Probes sent: 1248
                                     
      Sequence number of last probe received: 0
  Chassis cluster LED information:
      Current LED color: Green
  Control port tagging:  Disabled                 
  
  Cold Synchronization:  
  

• For users deploying chassis cluster for the first time: VLAN tagging will be disabled by default. If you want to use VLAN 4094, use the following command:

  set chassis cluster control-link-vlan enable

• For users with existing chassis cluster configurations: If you upgrade to newer releases, VLAN restriction remains enabled to make it backward compatible. If you do not want to use VLAN, use the following command:

  set chassis cluster control-link-vlan disable

  Note: You must perform a reboot to initialize this configuration change.

Table 1 shows the action that existing users need to take if they want to upgrade to newer releases.