C
HAPTER
2
| Initial Switch Configuration
Basic Configuration
– 72 –
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 following configuration examples are provided for a Linux-based DHCP
daemon (dhcpd.conf file). In the “Vendor class” section, the server will
always send Option 66 and 67 to tell the switch to download the “test”
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 {
range 192.168.255.160 192.168.255.200;
option routers 192.168.255.101;
option tftp-server-name "192.168.255.100"; #Default Option 66
option bootfile-name "bootfile"; #Default Option 67
}
class "Option66,67_1" { #DHCP Option 60 Vendor class
match if option vendor-class-identifier = "ECS4110-24T_Op.cfg";
option tftp-server-name "192.168.255.101";
option bootfile-name "test";
}
N
OTE
:
Use “ECS4110-24T_Op.cfg” for the vendor-class-identifier in the
dhcpd.conf file.
Table 4: 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
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