Display And Debug Dhcp Relay - Huawei Quidway S3500 Series Operation Manual

Operation Manual - Network Protocol
Quidway S3500 Series Ethernet Switches
Table 4-4 Enable/Disable DHCP security features on VLAN interface
Enable DHCP security features
Disable DHCP security features on
VLAN interface
By default, the switch disables DHCP security features function.
4.2.5 Enable/Disable DHCP pseudo-server detection
Suppose there is a DHCP server placed on a network without permission. When there
is a user request for an IP address, the DHCP server will interact with the DHCP client,
leading the user to get a wrong IP address. In this case, the user will be unable to
access the network. Such a DHCP server is called DHCP pseudo-server.
After a DHCP pseudo-server detection-enabled, switch will record the information of
the DHCP servers such as their IP addresses so that the administrator can discover the
DHCP pseudo-servers.
Perform the following configuration in system view.
Table 4-5 Enable/Disable DHCP pseudo-server detection
Enable DHCP pseudo-server detection
Disable DHCP pseudo-server detection
By default, DHCP pseudo-server detection is disabled.

4.3 Display and debug DHCP Relay

After the above configuration, execute display command in any view to display the
running of the DHCP Relay configuration, and to verify the effect of the configuration.
Execute debugging command in user view to debug DHCP Relay configuration.
Table 4-6 Display and debug DHCP Relay
Display the information about the DHCP
Server group
Display the information about the DHCP
Server group corresponding to the VLAN
interface.
Operation
Operation
Operation
Huawei Technologies Proprietary
4-4
Chapter 4 DHCP Relay Configuration
Command
address-check enable
address-check disable
Command
dhcp-server detect
undo dhcp-server detect
Command
display dhcp-server groupNo
display dhcp-server
vlan-interface vlan-id
interface