3Com 4210G Series, Configuration Manual, Page: 254 / 1133

6-9
the device name must contain no spaces. Otherwise, the DHCP relay agent will drop the
message.
Displaying and Maintaining DHCP Relay Agent Configuration
To do… Use the command… Remarks
Display information about DHCP
server groups correlated to a specified
or all interfaces
display dhcp relay
{
all
|
interface interface-type
interface-number
}
Display Option 82 configuration
information on the DHCP relay agent
display dhcp relay information
{
all
|
interface interface-type
interface-number
}
Display information about bindings of
DHCP relay agents
display dhcp relay security
[
ip-address
|
dynamic
|
static
]
Display statistics information about
bindings of DHCP relay agents
display dhcp relay security
statistics
Display information about the
refreshing interval for entries of
dynamic IP-to-MAC bindings
display dhcp relay security
tracker
Display information about the
configuration of a specified or all
DHCP server groups
display dhcp relay
server-group
{
group-id
|
all
}
Display packet statistics on relay
agent
display dhcp relay statistics
[
server-group
{
group-id
|
all
} ]
Available in any view
Clear packet statistics from relay
agent
reset dhcp relay statistics
[
server-group group-id
]
Available in user
view
DHCP Relay Agent Configuration Examples
DHCP Relay Agent Configuration Example
Network requirements
VLAN-interface 1 on the DHCP relay agent (Switch A) connects to the network where DHCP clients
reside. The IP address of VLAN-interface 1 is 10.10.1.1/24 and IP address of VLAN-interface 2 is
10.1.1.2/24 that communicates with the DHCP server 10.1.1.1/24. As shown in
Figure 6-3 , Switch A
forwards messages between DHCP clients and the DHCP server.