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Configuring ARP ····························································································· 1
Overview ···························································································································································· 1
ARP message format ································································································································· 1
ARP operating mechanism ························································································································ 1
ARP table ··················································································································································· 2
Configuring a static ARP entry ··························································································································· 3
Setting the maximum number of dynamic ARP entries for a device ·································································· 4
Setting the maximum number of dynamic ARP entries for an interface ···························································· 4
Setting the aging timer for dynamic ARP entries ······························································································· 5
Enabling dynamic ARP entry check ··················································································································· 5
Enabling ARP logging ········································································································································ 5
Displaying and maintaining ARP ························································································································ 6
Configuration examples ····································································································································· 7
Long static ARP entry configuration example ···························································································· 7
Short static ARP entry configuration example ···························································································· 8
Configuring gratuitous ARP ············································································ 9
Overview ···························································································································································· 9
Gratuitous ARP packet learning ················································································································· 9
Periodic sending of gratuitous ARP packets ······························································································ 9
Configuration procedure ·································································································································· 10
Enabling IP conflict notification ························································································································ 10
Configuring proxy ARP ················································································· 12
Enabling common proxy ARP ·························································································································· 12
Enabling local proxy ARP ································································································································ 12
Displaying proxy ARP ······································································································································ 13
Common proxy ARP configuration example ···································································································· 13
Network requirements ······························································································································ 13
Configuration procedure ··························································································································· 13
Verifying the configuration ························································································································ 14
Configuring ARP fast-reply ··········································································· 15
Overview ·························································································································································· 15
Configuration procedure ·································································································································· 15
ARP fast-reply configuration example ·············································································································· 15
Network requirements ······························································································································ 15
Configuration procedure ··························································································································· 16
Configuring ARP PnP ··················································································· 17
Overview ·························································································································································· 17
Configuration prerequisites ······························································································································ 17
Configuration procedure ·································································································································· 17
Displaying and maintaining ARP PnP ·············································································································· 18
ARP PnP configuration example ······················································································································ 18
Network requirements ······························································································································ 18
Configuration procedure ··························································································································· 18
Verifying the configuration ························································································································ 19
Configuring ARP suppression ······································································· 20
Overview ·························································································································································· 20
Configuration procedure ·································································································································· 20
Displaying and maintaining ARP suppression ································································································· 21
ARP suppression configuration example ········································································································· 21
Network requirements ······························································································································ 21
Configuration procedure ··························································································································· 22
Verifying the configuration ························································································································ 22
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