Qtech QSW-8200-28T-AC — dHCP Snooping Commands: User Manual Chapter 5 Overview [69/79]

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User Manual

Chapter 5. Commands for DHCP Snooping 69

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 Function: Set the suboption1 (circuit ID option) content of option 82 added by DHCP

request packets (they are received by the port). The no command sets the additive

suboption1 (circuit ID option) format of option 82 as standard.

 Parameters: standard means the standard format of VLAN name and physical port

name, such as Vlan2+Ethernet1/0/12. <circuit-id> means the circuit-id content of

option 82 specified by users, its length can not exceed 64 characters.

 Command Mode: Port Mode

 Default: Use standard format to set circuit-id.

 Usage Guide: The additive option 82 needs to associate with third-party DHCP server, it

is used to specify the circuit-id content by user when the standard circuit-id format can

not satisfy server’s request.

 Example: Set the suboption circuit-id of DHCP option82 as P2.

 Switch(config)#ip dhcp snooping information option subscriber-id P2

5.25 ip dhcp snooping information option subscriber-id format

 Command: ip dhcp snooping information option subscriber-id format {hex | acsii | vs-

hp}

 Function: This command is used to set subscriber-id format of DHCP snooping

option82.

 Parameters: hex means that subscriber-id is VLAN and port information with

hexadecimal format, acsii means that subscriber-id is VLAN and port information with

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

manufacturer.

 Command Mode: Global mode

 Default: ascii.

 Usage 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 fill 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:

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