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Reservation based on client MAC addresses—The DHCP server records the IP-to-MAC
bindings for online clients. When these clients come online again, the server assigns them the
IP addresses in the bindings based on their MAC addresses.
When you change the IP address reservation mode, the device deletes all expired leases that are
saved in the old reservation mode.
If you execute this command multiple times, the most recent configuration takes effect.
Examples
# Configure the DHCP server to reserve IP addresses based on client IDs in DHCP address pool 0.
<Sysname> system-view
[Sysname] dhcp server ip-pool 0
[Sysname-dhcp-pool-0] reserve expired-ip enable
[Sysname-dhcp-pool-0] reserve expired-ip mode client-id
reset dhcp server conflict
Use
reset dhcp server conflict
Syntax
reset
dhcp
vpn-instance-name ]
Views
User view
Predefined user roles
network-admin
Parameters
ip ip-address
this option, this command clears all address conflict information.
vpn-instance vpn-instance-name
case-sensitive string of 1 to 31 characters. If you do not specify a VPN instance, this command
clears conflict information about IP addresses for the public network.
Usage guidelines
Address conflicts occur when dynamically assigned IP addresses have been statically configured for
other hosts. After you modify the address pool configuration, the conflicted addresses might become
assignable. To assign these addresses, use the
clear the conflict information first.
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
server
conflict
: Clears conflict information about the specified IP address. If you do not specify
to clear IP address conflict information.
[
ip
ip-address
: Specifies an MPLS L3VPN instance by its name, a
reset dhcp server conflict
to clear binding information about expired IP addresses.
51
]
[
vpn-instance
command to
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