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Configuring ARP ··························································································································································· 1
Overview ············································································································································································ 1
ARP message format ················································································································································ 1
ARP address resolution process ······························································································································ 1
ARP table ··································································································································································· 2
Configuring a static ARP entry ········································································································································· 3
Configuring a multiport ARP entry ··································································································································· 4
Configuration guidelines ········································································································································· 4
Configuration procedure ········································································································································· 4
Configuring the maximum number of dynamic ARP entries for an interface ······························································ 5
Setting the age timer for dynamic ARP entries ··············································································································· 5
Enabling dynamic ARP entry check ································································································································ 6
Enabling natural mask support for ARP requests ··········································································································· 6
Displaying and maintaining ARP ····································································································································· 7
ARP configuration examples ············································································································································ 8
Static ARP entry configuration example ················································································································· 8
Multiport ARP entry configuration example ··········································································································· 9
Configuring gratuitous ARP ······································································································································· 11
Overview ········································································································································································· 11
Enabling learning of gratuitous ARP packets ····································································································· 11
Configuring periodic sending of gratuitous ARP packets ················································································· 11
Configuration procedure ··············································································································································· 12
Configuring proxy ARP ·············································································································································· 13
Overview ········································································································································································· 13
Common proxy ARP ·············································································································································· 13
Local proxy ARP ····················································································································································· 13
Enabling common proxy ARP ······································································································································· 14
Enabling local proxy ARP·············································································································································· 14
Displaying and maintaining proxy ARP ······················································································································· 15
Proxy ARP configuration examples ······························································································································ 15
Common proxy ARP configuration example ······································································································ 15
Local proxy ARP configuration example in case of port isolation ··································································· 16
Local proxy ARP configuration example in super VLAN ··················································································· 18
Configuring IP addressing ········································································································································· 20
Overview ········································································································································································· 20
IP address classes ·················································································································································· 20
Special IP addresses ············································································································································· 21
Subnetting and masking ······································································································································· 21
Assigning an IP address to an interface ······················································································································ 21
Displaying and maintaining IP addressing ················································································································· 22
IP addressing configuration example ··························································································································· 22
Network requirements ··········································································································································· 22
Configuration procedure ······································································································································ 23
DHCP overview ·························································································································································· 25
DHCP address allocation ·············································································································································· 25
Allocation mechanisms ········································································································································· 25
Dynamic IP address allocation process··············································································································· 26
