Cisco Systems OL-4580-01 manual Configuring ARP Timeout, Configuring ARP Wait

Chapter 4 Configuring the Address Resolution Protocol

Configuring ARP Timeout

Configuring ARP Timeout

To set the time, in seconds, to hold an ARP resolution result, use the arp timeout command. When you change the timeout value, this value affects only new ARP entries. All previous ARP entries retain the old timeout value. To remove all entries with the old timeout value, enter the clear arp cache command.

Note This timeout value affects only dynamic ARP entries. Static ARP entries are permanent and are not affected by this timeout period.

The timeout value is the number of seconds the CSS holds an ARP resolution result. To set a timeout value, enter an integer from 60 to 86400 (24 hours) seconds. The default is 14400 seconds (4 hours). If you do not want the ARP entries to time out, enter none or 86401.

For example:

(config)# arp timeout 120

To restore the default timeout value of 14400 seconds, enter:

(config)# no arp timeout

Configuring ARP Wait

To set the time, in seconds, to wait for an ARP resolution, use the arp wait command. The wait time is the number of seconds the CSS waits for an ARP resolution in response to an ARP request to the network. Enter an integer from 5 to 30 seconds. The default is 5.

For example:

(config)# arp wait 15

To restore the default wait time of 5 seconds, enter:

(config)# no arp wait

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