ECS4110-28T_Management Guide

C HAPTER 17 | IP Services
Dynamic Host Configuration Protocol
– 670 –
◆ By default, DHCP option 66/67 parameters are not carried in a DHCP
server reply. To ask for a DHCP reply with option 66/67 information, the
DHCP client request sent by this switch includes a “parameter request
list” asking for this information. Besides, the client request also
includes a “vendor class identifier” that allows the DHCP server to
identify the device, and select the appropriate configuration file for
download. This information is included in Option 55 and 124.
◆ The server should reply with the TFTP server name and boot file name.
◆ Note that the vendor class identifier can be formatted in either text or
hexadecimal, but the format used by both the client and server must be
the same.
PARAMETERS
These parameters are displayed in the web interface:
◆ VLAN – ID of configured VLAN.
◆ Vendor Class ID – The following options are supported when the
check box is marked to enable this feature:
■
Default – The default string is the unit model number.
■
Text – A text string. (Range: 1-32 characters)
■
Hex – A hexadecimal value. (Range: 1-64 characters)
Table 43: Options 60, 66 and 67 Statements
Option
Statement
Keyword Parameter
60 vendor-class-identifier a string indicating the vendor class identifier
66 tftp-server-name a string indicating the tftp server name
67 bootfile-name a string indicating the bootfile name
Table 44: Options 55 and 124 Statements
Option
Statement
Keyword Parameter
55 dhcp-parameter-request-list a list of parameters, separated by ','
124 vendor-class-identifier a string indicating the vendor class identifier