DHCP Relay 75

By default, DHCP security features function are disabled.

Displaying and Debugging DHCP Relay

Execute display command in all views to display the current DHCP Relay configuration, and to verify the effect of the configuration. Execute the debugging command in user view to debug DHCP Relay configuration.

Table 73 Displaying and Debugging DHCP Relay

Operation

Command

 

 

Display the information about the DHCP

display dhcp-server groupNo

server group

 

Display the information about the DHCP

display dhcp-server interface

server group corresponding to the VLAN

vlan-interface vlan-id

interface.

 

Enable DHCP relay debugging

debugging dhcp-relay

Disable DHCP relay debugging

undo debugging dhcp-relay

Display address information for all the legal

display dhcp-security [

clients of the DHCP Server group.

ip_address dynamic static ]

 

 

Example: Configuring DHCP Relay

Configure the VLAN interface corresponding to the user and the related DHCP server so as to use DHCP relay.

Figure 21 Networking Diagram of Configuring DHCP Relay

 

 

1.99.255.36

 

 

Server Group 1

VLAN 2

VLAN

1.99.255.35

 

4000

 

IP Network

VLAN

1.88.255.36

3001

Server Group 2

 

VLAN 3

 

 

1.88.255.35

1Configure the DHCP Server IP addresses into DHCP Server Group 1.

[SW7750]dhcp-server 1 ip 1.99.255.36 1.99.255.35

2Associate DHCP Server Group 1 with VLAN interface 2.

[SW7750-VLAN-Interface2]dhcp-server 1

3Configure the IP address corresponding to DHCP server group 2.

[SW7750]dhcp-server 2 ip 1.88.255.36 1.88.255.35

4Associate the DHCP Server Group 2 with VLAN interface 3.

[SW7750-VLAN-Interface3]dhcp-server 2

5Configure the corresponding interface and gateway address of VLAN2.

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3Com 10014298 manual Displaying and Debugging Dhcp Relay, Example Configuring Dhcp Relay