Chapter9DHCPConguration
FIGURE25DHCPSNOOPINGPREVENTSTATICIPCONFIGURATION
R1conguration:
ZXR10(config)#ipdhcpsnoopingenable
ZXR10(config)#ipdhcpsnoopingvlan100
ZXR10(config)#vlan100
ZXR10(config-vlan100)#iparpinspection
DHCPMaintenanceand
Diagnosis
1.TodisplaycongurationinformationoftheDHCPrelayprocess
module,usethefollowingcommand.
showipdhcprelay[forward|information|security|
server|snooping|user]
2.Todisplaycongurationinformationofthelocaladdresspool,
usethefollowingcommand.
showiplocalpool[<pool-name>]
3.Todisplaycongurationinformationofinterface-relatedDHCP
server/relay,usethefollowingcommand.
showipinterface
4.TodisplaytheDHCPsnoopingconguration,usethefollowing
command.
showipdhcpsnoopingconfigure
5.ToviewtheDHCPsnoopingVlan,usethefollowingcommand.
showipdhcpsnoopingvlan[<vlan-id>]
6.ToviewtheIPDHCPsnoopingtrust,usethefollowingcom-
mand.
showipdhcpsnoopingtrust
CondentialandProprietaryInformationofZTECORPORATION103