Dhcp Relay Configuration Example One - 3Com 5500-SI Configuration Manual

DHCP Relay
Configuration Example
One
DHCP Relay Displaying
You can verify your DHCP relay-related configuration by executing the following
display commands in any view.
Table 291 Display DHCP relay information
Operation
Display information about a specified DHCP
server group
Display information about the DHCP server
group to which a specified VLAN interface
is mapped
Display one or all user address entries, or a
specified type of entries in the valid user
address table of the DHCP server group
DHCP Snooping Displaying
After the above configuration, you can display IP addresses and the corresponding
MAC addresses tracked by the DHCP snooping function by executing the display
command in any view.
Table 292 Display DHCP snooping
Operation
Display the user IP-MAC address
mapping entries recorded by the
DHCP snooping function
Display the (enabled/disabled)
state of the DHCP snooping
function and the trusted ports
Networking Requirements
There are two VLANs (1 and 10) and they both need to use the same DHCP server.
Networking Diagram
Figure 74 Configuring DHCP Relay
D H C P clie n t
D H C P clie n t
1 0 .1 1 0 .0 .0
E th e rn e t
1 0 .1 1 0 .1 .1
S w itch ( D H C P R e la y )
Introduction to DHCP Accounting 297
Command
display dhcp-server groupNo
display dhcp-server interface vlan-interface vlan-id
display dhcp-security [ ip-address | dynamic | static |
tracker ]
Command
display dhcp-snooping
[unit unit-id]
display dhcp-snooping
trust
2 0 2 .3 8 .1 .1
In te rn e t E th e rn e t
2 0 2 .3 8 .0 .0
Description
You can execute the display
commands in any view.
D H C P S e rve r
2 0 2 .3 8 .1 .2