Displaying And Maintaining Dhcp Relay Agent Configuration; Dhcp Relay Agent Configuration Examples; Dhcp Relay Agent Configuration Example - H3C S5120-SI Series Configuration Manual

To support Option 82, related configuration is required on both the DHCP server and relay agent.
•
If the handling strategy of the DHCP relay agent is configured as replace, you need to configure a padding
•
format for Option 82. If the handling strategy is keep or drop, you need not configure any padding format.
If sub-option 1 (node identifier) of Option 82 is padded with the device name (sysname) of a node, 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...
Display information about DHCP server groups
correlated to a specified or all interfaces
Display Option 82 configuration information
on the DHCP relay agent
Display information about bindings of DHCP
relay agents
Display statistics information about bindings of
DHCP relay agents
Display information about the refreshing
interval for entries of dynamic IP-to-MAC
bindings
Display information about the configuration of
a specified or all DHCP server groups
Display packet statistics on relay agent
Clear packet statistics from relay agent

DHCP relay agent configuration examples

DHCP relay agent configuration example

Network requirements
As shown in Figure 1 1, DHCP clients reside on network 10.10.1.0/24. The IP address of the DHCP server
is 10.1.1.1/24. Because the DHCP clients reside on a different network with the DHCP server, a DHCP
Use the command...
display dhcp relay { all |
interface interface-type interface-
number }
display dhcp relay information
{ all | interface interface-type
interface-number }
display dhcp relay security [ ip-
address | dynamic | static ]
display dhcp relay security
statistics
display dhcp relay security
tracker
display dhcp relay server-
group { group-id | all }
display dhcp relay statistics [
server-group { group-id | all } ]
reset dhcp relay statistics [
server-group group-id ]
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Remarks
Available in any view
Available in user
view