Preparing For Configurations; Default Configurations Of Dhcp Option; Configuring Dhcp Option Fields - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

Raisecom
ISCOM2600G-HI (A) Series Configuration Guide

6.4.2 Preparing for configurations

Scenario
Options 18, 37, 61, and 82 in DHCP Option are relay information options in DHCP packets.
When request packets from DHCP clients reach the DHCP server, DHCP Relay or DHCP
Snooping added Option field into request packets if request packets pass the DHCP relay
device or DHCP snooping device is required.
Options 18, 37, 61, and 82 are used to record DHCP client information on the DHCP server.
By cooperating with other software, it can implement functions such as limit on IP address
distribution and accounting.
Prerequisite
N/A

6.4.3 Default configurations of DHCP Option

Default configurations of DHCP Option are as below.
attach-string in global configuration mode
remote-id in global configuration mode
circuit-id in interface configuration mode

6.4.4 Configuring DHCP Option fields

Configure DHCP Option fields for the ISCOM2600G-HI series switch as below.
All the following steps are optional and in any sequence.
Step
1
2
Function
Command
Raisecom#config
Raisecom(config)#ip dhcp information option
attach-string
attach-string
Raisecom(config)#interface
interface-number
Raisecom(config-gigaethernet1/1/port)#ip
dhcp information option circuit-id
id
[ prefix-mode ]
Raisecom(config-gigaethernet1/1/port)#ip
vlan-id
dhcp option vlan
Raisecom(config-gigaethernet1/1/port)#exit
Raisecom Proprietary and Confidential
Copyright © Raisecom Technology Co., Ltd.
interface-type
circuit-
string
description
6 DHCP
Default value
N/A
Switch-mac
N/A
Description
Enter global
configuration mode.
(Optional) configure
additional information
for Option 82 field.
(Optional) configure
circuit ID sub-option
information for Option
82 field on the interface.
(Optional) configure the
interface or VLAN
description to be padded
into Option 82 fields.
272