3Com WX2200 3CRWX220095A, WXR100 3CRWXR10095A Set arp permanent static dynamic ip-addrmac-addr

Managing the ARP Table 131

Adding an ARP Entry MSS automatically adds a local entry for a WX switch and dynamic entries for addresses learned from traffic received by the switch. You can add the following types of entries:

„Dynamic — Ages out based on the aging timeout.

„Static — Does not age out but is removed by a software reboot.

„Permanent — Does not age out and remains in the ARP table following a software reboot.

To add an ARP entry, use the following command:

set arp {permanent static dynamic} ip-addrmac-addr

To add a static ARP entry that maps IP address 10.10.10.1 to MAC address 00:bb:cc:dd:ee:ff, type the following command:

WX1200# set arp static 10.10.10.1 00:bb:cc:dd:ee:ff success: added arp 10.10.10.1 at 00:bb:cc:dd:ee:ff on VLAN 1

Changing the Aging The aging timeout specifies how long a dynamic entry can remain unused Timeout before the software removes the entry from the ARP table. The default

aging timeout is 1200 seconds (20 minutes). The aging timeout does not affect the local entry, static entries, or permanent entries.

To change the aging timeout, use the following command:

set arp agingtime seconds

You can specify from 0 to 1,000,000 seconds. To disable aging, specify 0.

For example, to disable aging of dynamic ARP entries, type the following command:

WX1200# set arp agingtime 0

success: set arp aging time to 0 seconds

To reset the ARP aging timeout to its default value, use the set arp agingtime 1200 command.