H3C S3600 Series User Manual

Operation Manual – DHCP
H3C S3600 Series Ethernet Switches-Release 1510 Chapter 3
DHCP Relay Configuration
3-10
 Note:
z By default, with the option 82 supporting function enabled on the DHCP relay, the
DHCP relay will adopt the replace strategy to process the request packets
containing option 82. However, if other strategies are configured before, then
enabling the 82 supporting on the DHCP relay will not change the configured
strategies.
z To enable option 82, you need to perform the corresponding configuration on the
DHCP server and the DHCP relay.
3.3 Displaying and Debugging DHCP Relay
After the preceding configurations, you can execute the display command in any view
to verify the configurations. You can also execute the reset command to clear the
statistics information about the specified DHCP server group.
Table 3-9 Display DHCP relay information
Operation Command Description
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 |
tracker ]
The display
command can
be executed
in any view
Clear the statistics information
of the specified DHCP server
group
reset dhcp-server groupNo
The reset
command
must be
executed in
user view
3.4 DHCP Relay 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, through which

H3C S3600 Series Specifications

General

Brand	H3C
Model	S3600 Series
Category	Switch
Language	English