Qtech QSW-8200-28T-POEAC- DC [44/79] Ip dhcp relay information policy

User Manual

Chapter 3. Commands for DHCP Option 82 44

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ACSII format. vs-hp means that subscriber-id is compatible with the format of HP

manufacturer.

 Command Mode: Global mode

 Default: ascii.

 User Guide: VLAN and port information with ASCII format, such as

“Vlan1+Ethernet1/0/11”, VLAN and port information with hexadecimal format defined

as below:

 VLAN field fills in VLAN ID. For chassis switch, Slot means slot number, for box switch,

Slot is 1; default Module is 0; Port means port number which begins from 1.

 The compatible subscriber-id format with HP manufacturer defined as below:

 Port means port number which begins from 1.

 Example: Set subscriber-id format of Relay Agent option82 as hexadecimal format.

 Switch(config)#ip dhcp relay information option subscriber-id format hex

3.12 ip dhcp relay information policy

 Command: ip dhcp relay information policy {drop | keep | replace}

 no ip dhcp relay information policy

 Function: This command is used to set the retransmitting policy of the system for the

received DHCP request message which contains option82. The drop mode means that if

the message has option82, then the system will drop it without processing; keep mode

means that the system will keep the original option82 segment in the message, and

forward it to the server to process; replace mode means that the system will replace

the option 82 segment in the existing message with its own option 82, and forward the

message to the server to process. The “no ip dhcp relay information policy” will set the

retransmitting policy of the option 82 DCHP message as “replace”.

 Parameters: None

 Command Mode: Interface configuration mode.

1 8 0 6 VLAN Slot Module Port

1 byte 1 byte 1 byte 1 byte 2 byte 1 byte 1 byte 2 byte

Suboption

type

Length

Circuit

ID type

Length

1 2

Port

1 byte 1 byte

2 byte

Suboption

type

Length