H3C Technologies H3C S7500E Series Switches - Manual (Page 75)

6-10
To do… Use the command… Remarks
Display information about bindings of
DHCP relay agents
display dhcp relay security
[ ip-address | dynamic | static ]
Available in any view
Display statistics information about
bindings of DHCP relay agents
display dhcp relay security
statistics
Available in any view
Display information about the refreshing
interval for entries of dynamic IP-to-MAC
bindings
display dhcp relay security tracker Available in any view
Display information about the configuration
of a specified or all DHCP server groups
display dhcp relay server-group
{ group-id | all }
Available in any view
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
As shown in Figure 6-3 , 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 relay agent is deployed to forward messages between DHCP clients and the DHCP server.
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 the IP address of VLAN-interface 2 is
10.1.1.2/24.
Figure 6-3 Network diagram for DHCP relay agent
Switch B
DHCP server
Switch A
DHCP relay agent
DHCP client DHCP client
DHCP client DHCP client
Vlan-int2
10.1.1.2/24 Vlan-int1
10.10.1.1/24
Vlan-int2
10.1.1.1/24