clear arp table every 5 seconds

[jjoseph01]

Hi all.  I am in need to have the arp table cleared every 5 seconds or so on a 2800 router.  I was wondering how I might be able to accomplish this.  Anyone have any ideas on how to do this?

[Vivek Ganapathi]

Not sure, why would you want to do this. Nevertheless, there is no such command to do it on a router. But you can use schedule a batch job to execute automatically every 5 seconds. You can accomplish this with some TCL script or use of Ciscoworks, HPNA or Kiwi cat tools. I have never used Kiwi Cat tools though for this.

Thanks

Vivek

[nkarpysh]

Hello,

Easiast way I guess to write EEM script. I guess it should look like this:

event manager applet CLEA_ARP

event timer watchdog time 5.0

 action 1.0 cli command "clear ip arp"    
 
 
 So you just configuring this in conf t mode. Though better to test that in a lab before applying to production.
 
 More configs can be found here:
 http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_eem_policy_cli.html
 
 Hope this helps,
 
 Nik

[Vivek Ganapathi]

Oh yes, forgot this completely. EEM's are awesome

[jjoseph01]

Thank you guys for your replies.  I dont know much about EEM, but Ill look into this and learn what I can.  Thanks again.