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Old 08-09-2013, 07:47 PM   #1
Registered: Apr 2013
Posts: 39

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Flush arp cache

The networking people are replacing routers, building new leads, and placing in new locations.

As for as systems is concern I can just flush the arp cache once there job is done? I will take note of the mac address change of the gateway router. Anything else to check? We have mostly centos.

ip -s -s neigh flush all

Old 08-10-2013, 01:01 PM   #2
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Registered: Oct 2012
Location: Bristol, CT
Distribution: Debian Wheezy + LXDE
Posts: 26

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copied from the arp man pages

arp -d address will delete a ARP table entry. Root or netadmin priv‐
eledge is required to do this. The entry is found by IP address. If a
hostname is given, it will be resolved before looking up the entry in
the ARP table.

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