Planet XGS3-24042 User Manual download pdf (Page 251)

31-5

ip dhcp relay information option

self-defined remote-id format [ascii |

hex]

Set self-defined format of remote-

id for

relay option82.

ip dhcp relay information option

self-defined subscriber-id {vlan | port | id

(switch-id (mac | hostname)|

remote-mac)| string WORD }

no ip dhcp relay information option

self-defined subscriber-id

Set creation method for option82, users

can define the parameters of circute-id

suboption by themselves

ip dhcp relay information option

self-defined subscriber-id format [ascii |

hex]

Set self-defined format of circuit-id for relay

option82.

7. Diagnose and maintain DHCP option 82

Command

Explanation

Admin mode

show ip dhcp relay information option

This command will display the state

information of the DHCP option 82 in the

system, including option82 enabling switch,

the interface retransmitting policy, the

circuit ID mode and the DHCP server

option82 enabling switch.

debug ip dhcp relay packet

This command is used to display the

information of data packets processing in

DHCP Relay Agent, including the “add” and

“peel” action of option 82.

31.3 DHCP option 82 Application Examples

Figure 31-1 A DHCP option 82 typical application example

Switch1

Switch2

DHCP Client PC1

DHCP Client PC2

DHCP Server

Vlan2:ethernet1/2

Vlan2:ethernet1/3

DHCP Relay Agent

Switch3

Vlan3

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