4-6To do… Use the command… RemarksConfigure thepadding format forOption 82dhcp-snoopinginformation format{ normal | verbose[ node-identifier { mac |sysname | user-definednode-identifier } ] }Optionalnormal by default.Configure the codetype for the circuit IDsub-optiondhcp-snoopinginformation circuit-idformat-type { ascii | hex }OptionalBy default, the code typedepends on the paddingformat of Option 82. Eachfield has its own codetype.This code typeconfiguration applies tonon-user-defined Option82 only.Configurenon-user-definedOption 82Configure the codetype for the remoteID sub-optiondhcp-snoopinginformation remote-idformat-type { ascii | hex }Optionalhex by default.The code typeconfiguration applies tonon-user-defined Option82 only.Configure thepadding content forthe circuit IDsub-optiondhcp-snoopinginformation [ vlan vlan-id ]circuit-id string circuit-idOptionalBy default, the paddingcontent depends on thepadding format of Option82.Configureuser-definedOption 82 Configure thepadding content forthe remote IDsub-optiondhcp-snoopinginformation [ vlan vlan-id ]remote-id string{ remote-id | sysname }OptionalBy default, the paddingcontent depends on thepadding format of Option82.z You can enable DHCP snooping to support Option 82 on Layer 2 Ethernet interfaces only.z To support Option 82, it is required to perform related configuration on both the DHCP server andthe device enabled with DHCP snooping.z If the handling strategy of the DHCP-snooping-enabled device is configured as replace, you needto configure a padding format for Option 82. If the handling strategy is keep or drop, you need notconfigure any padding format.z If the Option 82 is padded with the device name (sysname) of a node, the device name mustcontain no spaces. Otherwise, the DHCP-snooping-enabled device will drop the message.
