Enhancements

Release M.10.39 Enhancements

■Enhancement (PR_1000415155) — The ARP age timer was enhanced from the previous limit of 240 minutes to allow for configuration of values up to 1440 minutes (24 hours) or "infinite" (99,999,999 seconds or 3.2 years).

ARP Age Timer Increase

The ARP age is the amount of time the switch keeps a MAC address learned through ARP in the ARP cache. The switch resets the timer to zero each time the ARP entry is refreshed and removes the entry if the timer reaches the ARP age.

You can increase the ARP age timeout maximum to 24 hours or more with this command:

Syntax: [no] ip arp-age <[1...1440] infinite>

Allows the ARP age to be set from 1 to 1440 minutes (24 hours). If the option “infinite” is configured, the internal ARP age timeout is set to 99,999,999 seconds (approximately 3.2 years). An arp-agevalue of 0 (zero) is stored in the configuration file to indicate that “infinite” has been configured. This value also displays with the show commands and in the menu display (Menu > Switch Configuration > IP Config).

Default: 20 minutes.

ProCurve(config)# ip arp-age 1000

Figure 13. Example of Setting the ARP Age Timeout to 1000 Minutes

To view the value of Arp Age timer, enter the show ip command as shown in Figure 14.

ProCurve(config)# show ip

Internet (IP) Service

IP Routing : Disabled

Default Gateway :

15.255.120.1

Default TTL

:

64

Arp Age

:

1000

Domain Suffix

:

 

DNS server

:

 

VLAN

IP Config

IP Address

Subnet Mask

Proxy ARP

DEFAULT--------------------_VLAN

+ ----------

---------------

---------------

---------

Manual

15.255.111.13

255.255.248.0

No

Figure 14. Example of show ip Command Displaying Arp Age

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