Operation Manual - Network Protocol
Quidway S3500 Series Ethernet Switches Chapter 5 DHCP Configuration
Huawei Technologies Proprietary
5-10
By default, no IP address range is configured for dynamic allocation.
Each DHCP address pool can have only one network segment. If an address pool has
already had a segment, the new one configured using the network command replaces
the old one.
 Note:
When configuring the IP address range for dynamic assignment in the IP address pool,
make sure the configured mask is consistent with that of the VLAN interface which
functions as the user gateway on DHCP server. If not consistent, the client may fail to
obtain the IP address or fail to use the obtained IP address.
5.3.3 Configure IP Addresses Forbidden in Automatic Allocation
In configuring address allocation by the DHCP server, you should exclude those IP
addresses in use such as IP addresses of gateway and FTP server to avoid address
conflict resulted from allocating one IP address to two hosts.
Perform the following configuration in system view.
Table 5-9 Configure IP addresses forbidden in automatic allocation
Operation Command
Configure IP addresses forbidden in
automatic allocation
dhcp server forbidden-ip
low-ip-address [ high-ip-address ]
Cancel the configuration of IP addresses
forbidden in automatic allocation
undo dhcp server forbidden-ip
low-ip-address [ high-ip-address ]
By default, all addresses in a DHCP address pool participate in automatic allocation.
Using this command repeatedly, you can exclude multiple IP address ranges from
automatic allocation.
5.3.4 Configure IP Address Lease Duration for a DHCP Address Pool
A DHCP server can assign different lease duration to an address pool, but this duration
applies to all the addresses in this address pool.
I. Configure lease duration for a global DHCP address pool
Perform the following configuration in DHCP address pool view.
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