| Cluster Mode |
A member can be in either an Active or
Standby mode. All active member can adopt access points.
Standby members only adopt access points when an active member has
failed or sees an access point not adopted by a controller or service
platform. The default cluster mode is Active and
enabled for use with the profile. |
| Cluster Name |
Define a name for the cluster name unique to its configuration or
profile support requirements. The name cannot exceed 64
characters. |
| Master Priority |
Set a priority value from 1 - 255, with the higher value given
higher priority. This configuration is the device‘s priority to become
the cluster master. In a cluster environment, one device from the
cluster is elected as the cluster master. The master priority setting
is the device‘s priority to become cluster master. The active primary
controller has the higher master priority. The default value is
128. |
| Handle STP Convergence |
Select the check box to enable Spanning Tree
Protocol (STP) convergence for the controller or service
platform. In general, this protocol is enabled in layer 2 networks to
prevent network looping. Spanning Tree is a network layer protocol
that ensures a loop-free topology in a mesh network of inter-connected
layer 2 cluster members. The spanning tree protocol disables redundant
connections and uses the least costly path to maintain a connection
between any two controllers or service platforms in the network. If
enabled, the network forwards data only after STP convergence.
Enabling STP convergence delays the redundancy state machine execution
until the STP convergence is completed (the standard protocol value
for STP convergence is 50 seconds). Delaying the state machine is
important to load balance APs at startup. The default setting is
disabled. |
| Force Configured State |
Select the check box to enable this cluster member to take over
for an active member if it were to fail. A standby controller or
service platform takes over APs adopted by the failed member. If the
failed cluster member were to come available again, the active member
starts a timer based on the Auto Revert Delay interval. At the
expiration of the Auto Revert Delay, the standby member releases all
adopted APs and goes back to a monitoring mode. The Auto Revert Delay
timer is stopped and restarted if the active member goes down and
comes up during the Auto Revert Delay interval. The default value is
disabled. |
| Force Configured State Delay |
Specify a delay interval in either Seconds (1
- 1,800) or Minutes (1 - 30). This is the interval a standby cluster
member waits before releasing adopted APs and goes back to a
monitoring mode when a controller becomes active again after a
failure. The default interval is 5 seconds. |
