Operation Manual – DHCP
H3C S3610&S5510 Series Ethernet Switches
Chapter 2 DHCP Server Configuration
2-13
z
Define existing DHCP options. Some options have no unified definitions in RFC
2132; however, vendors can define such options as needed. The self-defined
DHCP option enables DHCP clients to obtain vendor-specific information.
z
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.
Follow these steps to configure a self-defined DHCP option 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
—
Configure a
self-defined DHCP
option
option code
{
ascii
ascii-string
|
hex
hex-string
&<1-16> |
ip-address
ip-address
&<1-8> }
Required
No DHCP option is
configured by default.
Table 2-1
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
44
NetBIOS over TCP/IP
Name Server Option
nbns-list ip-address
46
NetBIOS over TCP/IP
Node Type Option
netbios-type hex
51
IP Address Lease Time
expired hex
58
Renewal (T1) Time
Value
expired hex
59
Rebinding (T2) Time
Value
expired hex
66 TFTP
server
name
tftp-server ascii
67 Bootfile
name
bootfile-name ascii
43
Vendor Specific
Information
—
hex
