Display Dhcp Server Conflict - HP MSR Series Command Reference Manual

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 ] [ vpn-instance vpn-instance-name ]
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.
vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name. The MPLS L3VPN
instance name is a case-sensitive string of 1 to 31 characters. To display conflict information about IP
addresses on the public network, do not specify this option.
Usage guidelines
The DHCP server generates IP address conflict information in the following situations:
Before assigning an IP address to a DHCP client, the DHCP server pings the IP address and
•
discovers that another host is using the address.
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.
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