3Com 5500 SI - Switch - Stackable, Configuration Manual

Page: 149 / 686

DHCP Relay Displaying 149
The group number referenced in the dhcp-server groupNo command must has
already been configured by using the dhcp-server groupNo ip ipaddress1 [
ipaddress-list ] command.
DHCP Relay Displaying
You can verify your DHCP relay-related configuration by executing the following
display commands in any view.
DHCP Relay
Configuration
Example
Network requirements
The DHCP clients on the network segment 10.110.0.0 (255.255.255.0) are
connected to a port of VLAN 2, which has been created on the switch acting as a
DHCP relay. 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 the DHCP clients can obtain IP addresses and related configuration information
from the DHCP server.
Network diagram
Figure 36 Network diagram for DHCP relay
Configuration procedure
1 Enter system view.
<S5500> system-view
2 Enable DHCP.
[S5500] dhcp enable
3 Create DHCP server group 1 and configure an IP address of 202.38.1.2 for it.
[S5500] dhcp-server 1 ip 202.38.1.2
4 Map VLAN 2 interface to DHCP server group 1.
[S5500] interface vlan-interface 2
[S5500-Vlan-interface2] dhcp-server 1
Table 136 Display DHCP relay information
Operation Command
Display information about a specified DHCP
server group display dhcp-server groupNo
Display information about the DHCP server
group to which a specified VLAN interface
is mapped display dhcp-server interface vlan-interface vlan-id
Display one or all user address entries, or a
specified type of entries in the valid user
address table of the DHCP server group display dhcp-security [ ip-address | dynamic | static |
tracker ]