H3C Technologies H3C S7500E Series Switches - Manual (Page 55)

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When Option 55 in the client’s request contains parameters of Option 66, Option 67, or Option 150, the
DHCP server will return the IP address or name of the specified TFTP server, and bootfile name to the
client.
Follow these steps to configure the IP address and name of the TFTP server and the bootfile name 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
[ extended ]
—
Specify the TFTP server tftp-server ip-address ip-address
Specify the name of the TFTP
server
tftp-server domain-name domain-name
Required to use either
command
Not specified by default.
Specify the bootfile name bootfile-name bootfile-name
Required
Not specified by default.
Configuring Self-Defined DHCP Options
By configuring self-defined DHCP options, you can
z 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.
z Define existing DHCP options. Some options have no unified definitions in RFC 2132; however,
vendors can define such options as Option 43 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
[ extended ]
—
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.