Web Management Guide

Table Of Contents
Chapter 11
| Security Measures
DHCP Snooping
– 324
Circuit ID
– Specifies DHCP Option 82 circuit ID suboption information.
Mode
– Specifies the default string “VLAN-Unit-Port” or an arbitrary string.
(Default: VLAN-Unit-Port)
Value
– An arbitrary string inserted into the circuit identifier field.
(Range: 1-32 characters)
Web Interface
To configure global settings for DHCP Snooping:
1.
Click IP Service, DHCP, Snooping.
2.
Select Configure Interface from the Step list.
3.
Set any ports within the local network or firewall to trusted.
4.
Specify the mode used for sending circuit ID information, and an arbitrary
string if required.
5.
Click Apply
Figure 190: Configuring the Port Mode for DHCP Snooping
Displaying DHCP
Snooping Binding
Information
Use the IP Service > DHCP > Snooping (Show Information) page to display entries
in the binding table.
Parameters
These parameters are displayed:
MAC Address
– Physical address associated with the entry.
IP Address
– IP address corresponding to the client.
Lease Time
– The time for which this IP address is leased to the client.