Configures a keep-alive VLAN for the cluster.

keep-alive-vlan vlan-ID
no keep-alive-vlan vlan-ID

A keep-alive VLAN is not configured.

vlan-ID
Specifies the VLAN number. The values can be from 1 through 4089.

Cluster configuration mode

Only one VLAN can be configured as a keep-alive VLAN. The keep-alive VLAN cannot be a member VLAN of the Multi-Chassis Trunking (MCT) and this VLAN can be tagged or untagged.

When the CCP is down, the following results occur:
  • If the keep-alive VLAN is configured, CCRR messages are sent every second over that VLAN.
  • If no packets are received from the peer device for a period of three seconds, the peer is considered down.
  • If a keep-alive VLAN is not configured and both the peer devices are up, both peers continue forwarding traffic independently, when the CCP is down.
Note: Keep-alive VLAN configuration is not allowed when the client isolation mode is strict; and when the keep-alive VLAN is configured, client isolation mode cannot be configured as strict.

The no form of the command removes the keep-alive VLAN configuration.

The following example shows how to configure the keep-alive VLAN.

device(config)# cluster SX 400
device(config-cluster-SX)# keep-alive-vlan 10