R21xx-HP FlexFabric 11900 Layer 3 IP Services Command Reference

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• Add all option values if the actual requirement exceeds the limit for a dedicated option
configuration command. For example, the dns-list command can specify up to eight DNS servers.
To specify more than eight DNS server, you must use the option 6 command to define all DNS
servers.
If a DHCP option is specified by both the dedicated command and the option command, the DHCP
server preferentially assigns the content specified by the dedicated command. For example, if a DNS
server address is specified by the dns-list command and the option 6 command, the server uses the
address specified by dns-list command.
Examples
# Configure Option 7 to specify the log server address 2.2.2.2 in address pool 0.
<Sysname> system-view
[Sysname] dhcp server ip-pool 0
[Sysname-dhcp-pool-0] option 7 ip-address 2.2.2.2
Related commands
display dhcp server pool
reset dhcp server conflict
Use reset dhcp server conflict to clear IP address conflict information.
Syntax
reset dhcp server conflict [ ip ip-address ]
Views
User view
Predefined user roles
network-admin
Parameters
ip ip-address: Clears the conflict information for the specified IP address. If no IP address is specified, this
command clears all address conflict information.
Usage guidelines
Address conflicts occur when dynamically assigned IP addresses have been statically configured for
other hosts. After the conflicts are resolved, you can use the reset dhcp server conflict command to clear
conflict information so that the conflicted addresses can be assigned to clients.
Examples
# Clear all IP address conflict information.
<Sysname> reset dhcp server conflict
Related commands
display dhcp server conflict
reset dhcp server expired
Use reset dhcp server expired to clear the binding information for expired IP addresses.