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Configuring ARP··························································································································································· 1
Overview············································································································································································1
ARP message format ················································································································································1
ARP operation ···························································································································································1
ARP table ···································································································································································2
Configuring a static ARP entry·········································································································································3
Configuring the maximum number of dynamic ARP entries for an interface······························································4
Setting the aging timer for dynamic ARP entries ···········································································································4
Enabling dynamic ARP entry check ································································································································4
Configuring ARP quick update ········································································································································5
Configuring multicast ARP ················································································································································5
Displaying and maintaining ARP·····································································································································6
ARP configuration examples ············································································································································7
Static ARP entry configuration example ·················································································································7
Multicast ARP configuration example·····················································································································8
Configuring gratuitous ARP ······································································································································· 10
Overview········································································································································································· 10
Gratuitous ARP packet learning ··························································································································· 10
Periodic sending of gratuitous ARP packets ······································································································· 10
Configuration guidelines ··············································································································································· 11
Configuration procedure ··············································································································································· 11
Configuring proxy ARP ·············································································································································· 12
Overview········································································································································································· 12
Common proxy ARP ·············································································································································· 12
Local proxy ARP····················································································································································· 12
Enabling common proxy ARP ······································································································································· 13
Enabling local proxy ARP·············································································································································· 13
Displaying and maintaining proxy ARP······················································································································· 13
Proxy ARP configuration examples ······························································································································ 14
Common proxy ARP configuration example ······································································································ 14
Local proxy ARP configuration example in case of port isolation ··································································· 15
Local proxy ARP configuration example in isolate-user-VLAN ·········································································· 16
Configuring ARP snooping ········································································································································ 18
Overview········································································································································································· 18
Configuration procedure ··············································································································································· 18
Displaying and maintaining ARP snooping ················································································································ 18
Configuring IP addressing ········································································································································· 19
Overview········································································································································································· 19
IP address classes ·················································································································································· 19
Special IP addresses ············································································································································· 20
Subnetting and masking ······································································································································· 20
Assigning an IP address to an interface ······················································································································ 21
Configuration guidelines ······································································································································ 21
Configuration procedure ······································································································································ 21
Configuration example ········································································································································· 21
Configuring IP unnumbered ·········································································································································· 23
Overview ································································································································································ 23