H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – DHCP
H3C S7500 Series Ethernet Switches Chapter 3
DHCP Relay Agent Configuration
3-8
To do… Use the command… Remarks
Configure the strategy for
the DHCP relay agent to
process request packets
containing option 82
dhcp relay information
strategy { drop | keep |
replace }
Optional
By default, the replace
policy is adopted
 Note:
To enable option 82, you need to perform the corresponding configuration on the
DHCP server and the DHCP relay agent.
3.3 Displaying and Maintaining DHCP Relay Agent
To do… Use the command… Remarks
Display the information about a
specified DHCP server group
display dhcp-server groupNo
Display the information about the
DHCP server group to which a
specified VLAN interface is
mapped
display dhcp-server interface
vlan-interface vlan-id
Display the address information
of all the users in the valid user
address table of the DHCP
server group
display dhcp-security
[ ip-address | dynamic | static ]
Available in
any view
Clear the statistics information of
the specified DHCP server group
reset dhcp-server groupNo
Available in
user view
3.4 DHCP Relay Agent Configuration Example
I. Network requirements
The DHCP clients on the network segment 10.110.0.0/16 are connected to a port of
VLAN 2. The IP address of the DHCP server is 202.38.1.2. DHCP packets between
the DHCP clients and the DHCP server are forwarded by the DHCP relay agent,
through which the DHCP clients can obtain IP addresses and related configuration
information from the DHCP server.