Does arp cache clear when i/f unplugged

Unanswered Question
Apr 28th, 2008
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Hi,

Does IOS automatically clear the arp cache, fast-switching cache and route cache for all IP addresses in a particular subnet if the router interface on that subnet is unplugged, or do I need to do,

clear arp interface <type> <number>

and

clear arp-cache


as is shown at,

http://www.cisco.com/en/US/docs/ios/12_4/ip_addr/configuration/guide/ipb_arp_ps6350_TSD_Products_Configuration_Guide_Chapter.html#wp1096656


Thanks, MH


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Richard Burts Tue, 04/29/2008 - 04:00
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MH


If you unplug the router interface and if the router interface then goes to line protocol down, then the ARP cache entries associated with that interface should be cleared.


HTH


Rick

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