R211x-HP Flexfabric 11900 Layer 3 - IP Services Command Reference

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mdc-admin
Parameters
client-ip: Specifies the IP address to be released.
vpn-instance vpn-instance-name: Specifies the MPLS L3VPN instance of the IP address. The
vpn-instance-name is a case-sensitive string of 1 to 31 characters. If you do not specify any VPN instance,
this command releases the IP address in the public network.
Usage guidelines
After you execute this command, the relay agent sends a DHCP-RELEASE packet to the DHCP server and
removes the relay entry of the IP address. Upon receiving the packet, the server removes binding
information about the specified IP address to release the IP address.
Examples
# Release the IP address 1.1.1.1.
<Sysname> system-view
[Sysname] dhcp relay release ip 1.1.1.1
dhcp relay server-address
Use dhcp relay server-address to specify DHCP servers on the DHCP relay agent.
Use undo dhcp relay server-address to remove DHCP servers.
Syntax
dhcp relay server-address ip-address
undo dhcp relay server-address [ ip-address ]
Default
No DHCP server is specified on the relay agent.
Views
Interface view
Predefined user roles
network-admin
mdc-admin
Parameters
ip-address: Specifies the IP address of a DHCP server. The DHCP relay agent forwards DHCP packets
received from DHCP clients to this DHCP server.
Usage guidelines
The specified IP address of the DHCP server must not reside on the same subnet as the IP address of the
DHCP relay agent interface. Otherwise, the DHCP clients might fail to obtain IP addresses.
You can specify a maximum of eight DHCP servers on an interface. The DHCP relay agent forwards the
packets from the clients to all the specified DHCP servers.
If you do not specify any IP address, the undo dhcp relay server-address command removes all DHCP
servers on the interface.