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ARP table keeps disappearing

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5 replies

by shaun.thomason

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I keep adding a static entry at a dos prompt but when the machine reboots the entry is removed?

arp -s nnn.nnn.nnn.nnn 00-00-20-b1-af-47

Has anyone else ever suffered like me and if so how was the problem cured?

Shaun

5 replies

by bohicam1

ARP is a temporary cache. In most cases ARP will hold na entry for two minutes. If that entry has been accessed in that two minute time frame, it will hold the entry for 10 minutes. By creating a static entry, it is there till a reboot. This is not a problem, this is just how ARP works.
Good luck!

Mike

by gperrie

if you have a logon script you could add the command in there to have it recreate the entry at startup.

Gavin

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