Setting The Aging Timer For Dynamic Arp Entries; Enabling Dynamic Arp Entry Check; Enabling Arp Log Output - H3C MSR 2600 Configuration Manual

Step
5. Set the maximum number of
dynamic ARP entries for the
interface.

Setting the aging timer for dynamic ARP entries

Each dynamic ARP entry in the ARP table has a limited lifetime, called an aging timer. The aging timer
of a dynamic ARP entry is reset each time the dynamic ARP entry is updated. A dynamic ARP entry that
is not updated before its aging timer expires is deleted from the ARP table.
To set the aging timer for dynamic ARP entries:
Step
1. Enter system view.
2. Set the aging timer for dynamic ARP
entries.

Enabling dynamic ARP entry check

The dynamic ARP entry check function controls whether the device supports dynamic ARP entries
containing multicast MAC addresses.
When dynamic ARP entry check is enabled, the device cannot learn dynamic ARP entries containing
multicast MAC addresses, and you cannot manually add static ARP entries containing multicast MAC
addresses.
When dynamic ARP entry check is disabled, the device can learn dynamic ARP entries containing
multicast MAC addresses obtained from the ARP packets sourced from a unicast MAC address. You can
also manually add static ARP entries containing multicast MAC addresses.
To enable dynamic ARP entry check:
Step
1. Enter system view.
2. Enable dynamic ARP entry check.

Enabling ARP log output

This function enables a device to output ARP logs generated in ARP resolution.
To enable ARP log output:
Command
arp max-learning-num number
Command
system-view
arp timer aging aging-time
Command
system-view
arp check enable
5
Remarks
If the value of the number argument is set
to 0, the interface is disabled from
learning dynamic ARP entries.
Remarks
N/A
By default, the aging time for
dynamic ARP entries is 20 minutes.
Remarks
N/A
By default, dynamic ARP entry check is
enabled.