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Hi,the default ARP timeout is 4 hours in the cisco routers. When an ARP entry is going to expire, will the device send an ARP request to retain it's entry?for example,if the default timeout is 4 hours, at 3 hour 59 minutes, is there any ARP request w...
Hi Richard, Why the router should send unicast ARP request before it is going to expire? If it sends, definitely it will get the reply unless the destination device is down. So, irrespective of traffic from that destination, the ARP entry for that de...
Thanks for the reply markmalone But I have come across a post on this same forum with different answer, please refer the below link,https://supportforums.cisco.com/discussion/11416946/arp-cache-timeout-cisco-routers in which they mentioned "a unica...
