H3C Technologies H3C S12500 Series Switches - Manual (Page 58)

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Step Command Remarks
3. Specify the IP address of a
server.
next-server ip-address Not specified by default.
Configuring self-defined DHCP options
CAUTION:
Be cautious when configuring self-defined DHCP options because such configuration might affect the
operation of DHCP.
By configuring self-defined DHCP options, you can
• Define new DHCP options. New configuration options will come out with DHCP development. To
support these new options, you can add them into the attribute list of the DHCP server.
• Define existing DHCP options. Vendors use Option 43 to define options that have no unified
definitions in RFC 2132. The self-defined DHCP option enables DHCP clients to obtain
vendor-specific information.
• Extend existing DHCP options. When the current DHCP options cannot meet the customers'
requirements (for example, you cannot use the dns-list command to configure more than eight DNS
server addresses), you can configure a self-defined option for extension.
To configure a self-defined DHCP option in the DHCP address pool:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter DHCP address pool
view.
dhcp server ip-pool pool-name [ extended ] N/A
3. Configure a self-defined
DHCP option.
option code { ascii ascii-string | hex
hex-string&<1-16> | ip-address
ip-address&<1-8> }
By default, no DHCP
option is configured.
Table 2 Description of common options
Option Option name
Corresponding
command
Command parameter
3 Router Option gateway-list ip-address
6 Domain Name Server Option dns-list ip-address
15 Domain Name domain-name ascii
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NetBIOS over TCP/IP Name
Server Option
nbns-list ip-address
46
NetBIOS over TCP/IP Node Type
Option
netbios-type hex
66 TFTP server name tftp-server ascii
67 Bootfile name bootfile-name ascii
43 Vendor Specific Information N/A hex