Dhcp Snooping Option 82 Support Configuration Example - 3Com 4210G Series Configuration Manual

24-port/48-port
Hide thumbs Also See for 4210G Series:
Table of Contents

Advertisement

[SwitchB-GigabitEthernet1/0/1] dhcp-snooping trust
[SwitchB-GigabitEthernet1/0/1] quit

DHCP Snooping Option 82 Support Configuration Example

Network requirements
As shown in
Configure the handling strategy for DHCP requests containing Option 82 as replace.
On GigabitEthernet 1/0/2, configure the padding content for the circuit ID sub-option as
company001 and for the remote ID sub-option as device001.
On GigabitEthernet 1/0/3, configure the padding format as verbose, access node identifier as
sysname, and code type as ascii for Option 82.
Switch B forwards DHCP requests to the DHCP server after replacing Option 82 in the requests,
so that the DHCP clients can obtain IP addresses.
Configuration procedure
# Enable DHCP snooping.
<SwitchB> system-view
[SwitchB] dhcp-snooping
# Specify GigabitEthernet 1/0/1 as trusted.
[SwitchB] interface gigabitethernet 1/0/1
[SwitchB-GigabitEthernet1/0/1] dhcp-snooping trust
[SwitchB-GigabitEthernet1/0/1] quit
# Configure GigabitEthernet 1/0/2 to support Option 82.
[SwitchB] interface gigabitethernet 1/0/2
[SwitchB-GigabitEthernet1/0/2] dhcp-snooping information enable
[SwitchB-GigabitEthernet1/0/2] dhcp-snooping information strategy replace
[SwitchB-GigabitEthernet1/0/2] dhcp-snooping information circuit-id string company001
[SwitchB-GigabitEthernet1/0/2] dhcp-snooping information remote-id string device001
[SwitchB-GigabitEthernet1/0/2] quit
# Configure GigabitEthernet 1/0/3 to support Option 82.
[SwitchB] interface gigabitethernet 1/0/3
[SwitchB-GigabitEthernet1/0/3] dhcp-snooping information enable
[SwitchB-GigabitEthernet1/0/3] dhcp-snooping information strategy replace
[SwitchB-GigabitEthernet1/0/3] dhcp-snooping information format verbose node-identifier
sysname
[SwitchB-GigabitEthernet1/0/3] dhcp-snooping information circuit-id format-type ascii
[SwitchB-GigabitEthernet1/0/3] dhcp-snooping information remote-id format-type ascii
Figure
8-3, enable DHCP snooping and Option 82 support on Switch B.
8-8

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

4210g nt4210g pwr

Table of Contents