Qtech QSW-8200-28T-POEAC- DC [68/79] Ip dhcp snooping information option self defined subscriber id format

User Manual

Chapter 5. Commands for DHCP Snooping 68

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 no ip dhcp snooping information option type self-defined subscriber-id

 Function: Set creation method for option82, users can define the parameters of circute-

id suboption by themselves.

 Parameters: WORD the defined character string of circuit-id by themselves, the

maximum length is 64.

 Command Mode: Global Mode

 Default: Using standard method.

 Usage Guide: After configure this command, if users do not configure circuit-id on port,

it will create circuit-id suboption for option82 according to self-defined method. Self-

defined format of circuit-id: if self-defined subscriber-id format is ascii, the filled format

of vlan such as “Vlan2”, the format of port such as “Ethernet1/0/1”, the format of mac

and remote-mac such as “00-02-d1-2e-3a-0d”. If self-defined format is hex, the filled

format of vlan occupies 2 bytes, port occupies 4 bytes, a byte means slot (for chassis

switch, it means slot ID, for box switch, it is 1), a byte means Module (the default is 0),

two bytes means port ID beginning from 1, mac and remote-mac occupy 6 bytes. Each

option will be filled to packets according to the configured order of the commands and

divide them with delimiter (delimiter is ip dhcp snooping information option delimiter

configuration).

 Example: Set self-defined method of circuit-id suboption as vlan, port, mac and remote-

mac for option82.

 Switch(config)#ip dhcp snooping information option self-defined subscriber-id vlan port

id remote-mac

5.23 ip dhcp snooping information option self-defined subscriber-id format

 Command: ip dhcp snooping information option self-defined subscriber-id format

[ascii | hex]

 Function: Set self-defined format of circuit-id for snooping option82.

 Parameters: None.

 Command Mode: Global Mode

 Default: ascii.

 Usage Guide: self-defined format uses ip dhcp snooping information option type self-

defined subscriber-id to create circuit-id format.

 Example: Set self-defined format of circuit-id as hex for snooping option82.

 Switch(config)#ip dhcp snooping information option self-defined subscriber-id format

hex

5.24 ip dhcp snooping information option subscriber-id

 Command: ip dhcp snooping information option subscriber-id {standard | <circuit-

id>}

 no ip dhcp snooping information option subscriber-id