Clear arp all

[Ibrahim Jamil]

Hi Netpro

when i issue the Command "Clear arp all" on 6500 ,did i lose all connectivity tos witch for a while?

thanks

jamil

[John Blakley]

Jamil,

You shouldn't lose connection to the switch...

I don't have the "all" argument though, so do you mean "clear arp" and hit enter? If so, you'll be fine...

HTH,

John

[Ibrahim Jamil]

Hi Jblakly

i mean lose  connection to servers connected to switch

when we need to  clear the arp table?i mean the situations

thanks

[John Blakley]

Any host that needs the address again will send another arp request. The table fills very fast. I've never had a complaint from someone when I've cleared the arp table. I've cleared it during the day for when our Systems group moves a server to another port, etc. The arp table/mac address is on an old port, so clearing that out would allow the switch to rediscover the server on the correct port.

John

[Ibrahim Jamil]

thanks John

[Anup Sasikumar]

Hi ,

I have used the same "clear arp" when one of the additonal IPs from one of the Web Servers were moved to a different Web Server. It saves quite a lot of time ! Or may be you can put a ping to some other IP in the LAN and the new ARP entry will get updated on the ARP table instantly !

Anup