Enabling Dynamic Arp Entry Check; Configuring Arp Quick Update - HP A7500 Series Configuration Manual

Follow these steps to set the age timer for dynamic ARP entries:
To do...
Enter system view
Set the age timer for dynamic ARP
entries

Enabling dynamic ARP entry check

The dynamic ARP entry check function controls whether the device supports dynamic ARP entries with
multicast MAC addresses.
When dynamic ARP entry check is enabled, the device cannot learn dynamic ARP entries containing
multicast MAC addresses.
When dynamic ARP entry check is disabled, the device can learn dynamic ARP entries containing
multicast MAC addresses.
Follow these steps to enable dynamic ARP entry check:
To do...
Enter system view
Enable dynamic ARP entry
check

Configuring ARP quick update

As shown in
between its MAC address and outbound interface on the switch. If the switch does not update its ARP
table immediately after the outbound interface changes, it may 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 outbound interface to ensure nonstop data
forwarding.
Follow these steps to enable ARP quick update:
Use the command...
system-view
arp check enable
Figure 3, the laptop frequently roams between AP 1 and AP 2. This affects the mapping
Use the command...
system-view
arp timer aging aging-time
5
Remarks
—
Optional
20 minutes by default.
Remarks
—
Optional
Enabled by default.