Hold Time | Define the Hold Time for a redundancy group. If there are no heartbeats received from a |
| peer during the hold time, the peer is considered to be down. In general, the hold period is |
| configured for three times the heartbeat period. Meaning, if three consecutive heartbeats |
| are not received from the peer, the peer is assumed down and unreachable. The hold time is |
| required to be greater than the heartbeat interval. |
Handle STP | Select the Handle STP convergence checkbox to enable STP convergence for the switch. |
convergence | STP stands for Spanning Tree Protocol. In general, this protocol is enabled in layer 2 |
| networks to prevent network looping. If the network is enabled for STP to prevent looping, |
| the network forward is 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 |
| execution is important to load balance Access Ports at startup. |
Revert Now | Click the Revert Now button to immediately revert back to the previous version of the |
| redundancy configuration. Clicking this button disregards any interval that may have been |
| set using the Auto Revert In feature. If you have made extensive changes, and then change |
| your mind about them, you can get rid of them by reading in the previous version of the file. |
3. Refer to the History field to view the current state of the redundancy group.
State | Displays the new state (status) of the redundancy group after a Trigger event has occurred. |
Time | Displays the Timestamp (time zone specific) when the state change occurred. |
Trigger | Displays the event causing the redundancy group state change on the switch. |
Description | Displays a redundancy event description defining the redundancy group state change on the |
| switch. Typical states include Redundancy Disabled or Redundancy Enabled. |
4.Click Apply to save any changes to the screen. Navigating away from the screen without clicking the Apply button results in all the changes on the screen being discarded.
5.Click the Revert button to undo the changes to the screen and revert to the last saved configuration.
5.4.1Reviewing Redundancy Status
The switch is capable of displaying the status of the collective membership of the cluster. Use this information to assess the overall health and performance of the group.
NOTE: When ETH2 of one of the group members is unplugged, the other members report that this member as gone, but an AP will continue to be adopted by the switch with no ETH2 connectivity.
To configure switch redundancy memberships:
1.Select Services > Redundancy from the main menu tree.
The Redundancy screen displays with the Configuration tab selected.
