HPE 5920 series

40
Syntax
dhcp server relay information enable
undo dhcp server relay information enable
Default
The DHCP server handles Option 82.
Views
System view
Predefined user roles
network-admin
Usage guidelines
Upon receiving a DHCP request that contains Option 82, the server copies the original Option 82 into
the response. If the server is configured to ignore Option 82, the response will not contain Option 82.
Examples
# Configure the DHCP server to ignore Option 82.
<Sysname> system-view
[Sysname] undo dhcp server relay information enable
display dhcp server conflict
Use display dhcp server conflict to display information about IP address conflicts.
Syntax
display dhcp server conflict [ ip ip-address ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
ip ip-address: Displays conflict information about the specified IP address. If you do not specify this
option, this command displays information about all IP address conflicts.
Usage guidelines
The DHCP server creates IP address conflict information in the following conditions:
•
Before assigning an IP address to a DHCP client, the DHCP server pings the IP address and
discovers that it has been used by other host.
•
The DHCP client sends a DECLINE packet to the DHCP server to inform the server of an IP
address conflict.
•
The DHCP server discovers that the only assignable address in the address pool is its own IP
address.
Examples
# Display information about all IP address conflicts.
<Sysname> display dhcp server conflict
IP address Detect time