3Com 4800G Series, Configuration Manual

Page: 802 / 1246

802 C
HAPTER
57: DHCP S
ERVER
C
ONFIGURATION
n
■
In DHCP address pool view, using the network command repeatedly
overwrites the previous configuration.
■
Using the dhcp server forbidden-ip command repeatedly can specify
multiple IP address ranges not assignable.
Configuring a Domain
Name Suffix for the
Client
You can specify a domain name suffix in each DHCP address pool on the DHCP
server to provide the clients with the domain name suffix. With this suffix
assigned, the client needs only input part of a domain name, and the system will
add the domain name suffix for name resolution. For details about DNS, refer to
“Configuring the DNS Client” on page 973.
Follow these steps to configure a domain name suffix in the DHCP address pool:
Configuring DNS Servers
for the Client
When a DHCP client wants to access a host on the Internet via the host name, it
contacts a Domain Name System (DNS) server holding host name-to-IP address
mappings to get the host IP address. You can specify up to eight DNS servers in the
DHCP address pool.
Follow these steps to configure DNS servers in the DHCP address pool:
To do… Use the command… Remarks
Enter system view system-view -
Enter DHCP address pool view dhcp server ip-pool
pool-name
-
Specify an IP address range network network-address
[ mask-length | mask mask ]
Required
Not specified by default,
meaning no assignable
address.
Specify the address lease
duration expired { day day [ hour
hour [ minute minute ] ] |
unlimited }
Optional
One day by default.
Return to system view quit -
Exclude IP addresses from
automatic allocation dhcp server forbidden-ip
low-ip-address
[ high-ip-address ]
Optional
Except IP addresses of the
DHCP server interfaces, all
addresses in the DHCP
address pool are assignable by
default.
To do… Use the command… Remarks
Enter system view system-view -
Enter the DHCP address pool
view dhcp server ip-pool
pool-name
-
Specify a domain name suffix
for the client domain-name domain-name Required
Not specified by default.
To do… Use the command… Remarks
Enter system view system-view -