H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 16)

5
To do… Use the command… Remarks
Set the maximum number of
dynamic ARP entries that the
interface can learn
arp max-learning-num number
Optional
By default, an Ethernet interface can
learn up to 128 ARP entries
dynamically.
If the value of the number argument is set
to 0, the interface is disabled from
learning dynamic ARP entries.
Setting the age timer for dynamic ARP entries
Each dynamic ARP entry in the ARP table has a limited lifetime, called age timer. The age timer of a
dynamic ARP entry is reset each time the dynamic ARP entry is used. Dynamic ARP entries that are not
used before their age timers expire are deleted from the ARP table. You can adjust the age timer for
dynamic ARP entries according to the actual network condition.
Follow these steps to set the age timer for dynamic ARP entries:
To do… Use the command… Remarks
Enter system view system-view —
Set the age timer for dynamic ARP
entries
arp timer aging aging-time
Optional
20 minutes by default.
Enabling ARP entry check
The dynamic ARP entry check function controls whether the device supports static ARP entries with
multicast MAC addresses.
When ARP entry check is enabled, you cannot configure a static ARP entry with a multicast MAC address
on the device; otherwise, the system displays error messages.
When ARP entry check is disabled, you can configure a static ARP entry with a multicast MAC address
on the device.
Follow these steps to enable dynamic ARP entry check:
To do… Use the command… Remarks
Enter system view system-view —
Enable dynamic ARP entry
check
arp check enable
Optional
Enabled by default.