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arp timeout

16-10 IP Configuration

Syntax

ip proxy-arp

no ip proxy-arp

Parameters

None.

Defaults

Disabled.

Mode

Interfaceconfiguration:C2(su)‐>router(Config‐if(Vlan1))#

Usage

ThisvariationoftheARPprotocolallowstheroutertosendanARPresponseonbehalfofanend

nodetotherequestinghost.ProxyARPcanbeusedtoresolveroutingissuesonendstationsthat

areunabletorouteinthesubnettedenvironment.TheSecureStackC2willanswertoARP

requests

onbehalfoftargetedendstationsonneighboringnetworks.Itisdisabledbydefault.

Example

ThisexampleshowshowtoenableproxyARPonVLAN1:

C2(su)->router(Config)#interface vlan 1

C2(su)->router(Config-if(Vlan 1))#ip proxy-arp

arp timeout

Usethiscommandtosettheduration(inseconds)fordynamicallylearnedentriestoremaininthe

ARPtablebeforeexpiring.Thenoformofthiscommandrestoresthedefaultvalueof14,400

seconds.

arp timeout seconds

no arp timeout

Parameters

Defaults

14,400seconds.

Mode

Globalconfiguration:C2(su)‐>router(Config)#

Example

ThisexampleshowshowtosettheARPtimeoutto7200seconds:

C2(su)->router(Config)#arp timeout 7200

seconds SpecifiesthetimeinsecondsthatanentryremainsintheARPcache.Valid

valuesare0‐65535.Avalueof0specifiesthatARPentries willneverbe

agedout.

Enterasys SecureStack C2 User Manual

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