NOTE
The DNS service, NetBIOS service, and IP address lease can be configured by commands. If these
commands are not supported by the device, you can run the option command to configure values for the
options corresponding to the DNS service, NetBIOS service, and IP address lease.
The related commands are as follows:
l DNS service: domain-name and dns-list
l Configuration command of the NetBIOS service: nbns-list and netbios-type
l IP address lease: lease
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ip pool ip-pool-name
The IP address pool view is displayed.
Step 3 Run:
option code [ sub-option sub-code ] { ascii ascii-string | hex hex-string | ip-
address ip-address &<1-8> }
User-defined DHCP options are configured.
The option command specifies the options that are sent in the DHCP packet by the server to the
client. Learn about the functions of options before running the option command. For descriptions
of common DHCP options, see RFC 2132.
----End
6.3.8 (Optional) Configuring the Function That Prevents Identical
IP Addresses
Before assigning an IP address to a client, the AR150/200 functioning as a DHCP server must
ping the IP address to prevent address conflicts.
Context
You can use the dhcp server ping command to check whether a response to the ping packet is
received within a specified period. If the AR150/200 does not receive a response packet within
the specified period, it sends ping packets continuously until the number of sent ping packets
reaches the upper limit. If the AR150/200 still does not receive a response packet, the IP address
is not used on the local network segment. This ensures that the IP address to be assigned is
unique.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Huawei AR150&200 Series Enterprise Routers
Configuration Guide - IP Service 6 DHCP Configuration
Issue 02 (2012-03-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
135
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