Supermicro SSE-G2252 User Manual page 77

To successfully transmit a bootup configuration file to the switch the DHCP daemon
(using a Linux based system for this example) must be configured with the following
information:
• Options 60, 66 and 67 statements can be added to the daemon's configuration file.
Table 3-1. Options 60, 66 and 67 Statements
Statement
Option
Keyword
60 vendor-class-identifier
66 tftp-server-name
67 bootfile-name
• 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.
Statement
Option
Keyword
55 dhcp-parameter-request-list
124 vendor-class-identifier
The following configuration examples are provided for a Linux-based DHCP daemon
(dhcpd.conf file). The server will reply with Options 66/67 encapsulated in Option 43.
Note that in the "Vendor class one" section, if the DHCP request packet's vendor class
identifier matches that specified in this file, the server will send Option 43 encapsulating
Option 66 and 67 in the DHCP reply packet. In the "Vendor class two" section, the
server will always send Option 66 and 67 to tell switch to download the "test2"
configuration file from server 192.168.255.101.
ddns-update-style ad-hoc;
default-lease-time 600;
max-lease-time 7200;
log-facility local7;
server-name "Server1";
Server-identifier 192.168.255.250;
#option 43 with encapsulated option 66, 67
option space dynamicProvision code width 1 length 1 hash size 2;
option dynamicProvision.tftp-server-name code 66 = text;
option dynamicProvision.bootfile-name code 67 = text;
subnet 192.168.255.0 netmask 255.255.255.0 {
Table 3-2. Options 55 and 124 Statements
Chapter 3: Initial Configuration
Parameter
a string indicating the vendor class identifier
a string indicating the tftp server name
a string indicating the bootfile name
Parameter
a list of parameters, separated by ','
a string indicating the vendor class identifier
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