Case Study: In a Dual-Link Scenario, an AP Does Not Select an AC with a Higher Priority to Go Online
Symptom
In a dual-link scenario, the priority of AC1 is higher than that of AC2, but the AP does not select AC1 as the active AC to go online.
Relevant Alarms and Logs
None
Cause Analysis
Dual-link backup is enabled on AC1 and AC2, but AC1 is not configured with the IP address of the standby AC. When an AP is going online, AC1 does not deliver the dual-link backup configuration to the AP. AC2 is configured with the IP address of the standby AC. When an AP goes online, AC2 delivers the dual-link configuration to the AP. Therefore, the AP preferentially selects AC2 with dual-link backup enabled and goes online.
Procedure
- Check whether the dual-link backup function is enabled on the active AC.
The check result shows that the dual-link backup function is enabled.
- Check whether the IP address of the standby AC is configured on the active AC.
The IP address of the standby AC is not configured, but the dual-link backup function is enabled on AC2 and the IP address of the standby AC is configured. Therefore, the AP selects AC2 to go online.
Suggestion and Summary
None