Configuring ARP quick update
HP recommends you enable ARP quick update in WLAN networks only.
As shown in Figure 3, the laptop frequently roams between AP 1 and AP 2. This affects the mapping between its MAC address and output interface on the switch. If the switch does not update its ARP table immediately after the output interface changes, it might fail to communicate with the laptop.
Figure 3: ARP quick update application scenario
With ARP quick update enabled, the switch updates the corresponding ARP entry immediately after the change of the mapping between a MAC address and an output interface to ensure nonstop data forwarding.
To enable ARP quick update:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enable ARP quick update. | mac-address station-move quick-notify enable | Optional. Disabled by default. |