Enabling The Dhcp Server On An Interface; Applying A Dhcp Address Pool To A Vpn Instance; Applying An Address Pool On An Interface - H3C SR8800-F Configuration Manual

Enabling the DHCP server on an interface

Perform this task to enable the DHCP server on an interface. Upon receiving a DHCP request on the
interface, the DHCP server assigns the client an IP address and other configuration parameters from
a DHCP address pool.
To enable the DHCP server on an interface:
Step
1. Enter system view.
2. Enter interface view.
3. Enable the DHCP server on
the interface.

Applying a DHCP address pool to a VPN instance

If a DHCP address pool is applied to a VPN instance, the DHCP server assigns IP addresses in this
address pool to clients in the VPN instance. Addresses in this address pool will not be assigned to
clients on the public network.
The DHCP server can obtain the VPN instance to which a DHCP client belongs from the following
information:
•
The client's VPN information stored in authentication modules, such as IPoE.
•
The VPN information of the DHCP server's interface that receives DHCP packets from the
client.
If both VPN instances can be obtained, the VPN information from authentication modules takes
priority over the VPN information of the receiving interface.
An MCE acting as the DHCP server can assign IP addresses not only to clients on public networks,
but also to clients on private networks. The IP address ranges of public and private networks or those
of private networks on the DHCP server cannot overlap. For more information about MCE, see
MPLS Configuration Guide.
To apply a DHCP address pool to a VPN instance:
Step
1. Enter system view.
2. Enter DHCP address pool
view.
3. Apply the address pool to a
VPN instance.

Applying an address pool on an interface

Perform this task to apply a DHCP address pool on an interface.
Upon receiving a DHCP request from the interface, the DHCP server performs address allocation in
the following ways:
Command
system-view
interface interface-type interface-number
dhcp select server
Command
system-view
dhcp server ip-pool pool-name
vpn-instance vpn-instance-name
108
Remarks
N/A
N/A
By default, the DHCP
server on the interface
is enabled.
Remarks
N/A
By default, no DHCP address
pool exists.
By default, the address pool is
not applied to any VPN
instance.