arp timeout
17-10 IP Configuration
arp timeout
Usethiscommandtosettheduration(inseconds)fordynamicallylearnedentriestoremaininthe
ARPtablebeforeexpiring.Thenoformofthiscommandrestoresthedefaultvalueof14,400
seconds.
arp timeout seconds
no arp timeout
Parameters
Defaults
14,400seconds.
Mode
Globalconfiguration:B3(su)‐>router(Config)#
Example
ThisexampleshowshowtosettheARPtimeoutto7200seconds:
B3(su)->router(Config)#arp timeout 7200
clear arp-cache
Usethiscommandtodeleteallnonstatic(dynamic)entriesfromtheARPtable.
clear arp-cache
Parameters
None.
Mode
PrivilegedEXEC:B3(su)‐>router#
Defaults
None.
Example
ThisexampleshowshowtodeletealldynamicentriesfromtheARPtable:
B3(su)->router#clear arp-cache
seconds SpecifiesthetimeinsecondsthatanentryremainsintheARPcache.Valid
valuesare0‐65535.Avalueof0specifiesthatARPentries willneverbe
agedout.