Orion A10E - DHCP Options; Introduction; Table 3-2 Common DHCP Options

Orion Networks
A10E/A28E/A28F Configuration Guide
3 IP services
Orion Networks
93
DHCP Option Config Information
Attach-string: alpha-a28e
Remote-ID Mode: string
Remote-ID String: user01
Port: 3 Circuit ID: alpha-a28e
3.7 DHCP options
3.7.1 Introduction
DHCP transmits control information and network configuration parameters through Option
field in packet to realize address dynamical distribution so as to provide abundant network
configuration information for client. DHCP protocol has 255 kinds of options, the final option
is 255. Common used DHCP options are listed as below.
Table 3-2 Common DHCP options
Options
Description
3
Router option, to assign gateway for DHCP client
6
DNS server option, to assign DNS server address distributed by DHCP client
18
DHCP client flag option, to assign interface information for DHCP client
51
IP address lease option
53
DHCP packet type, to mark type for DHCP packets
55
Request parameter list option. Client uses this optical to indicate network
configuration parameters need to obtain from server. The content of this
option is values corresponding to client requested parameters.
60
Vendor ID option. The client and DHCP server can distinguish the vendor of
the client by this option. The DHCP server can assign IP addresses in a
specified range to client.
61
DHCP client flag option, to assign device information for DHCP client.
66
TFTP server name, to assign domain name for TFTP server distributed by
DHCP client.
67
Start up file name, to assign start up file name distributed by DHCP client.
82
DHCP client flag option, user-defined, mainly used to mark position of DHCP
client.
150
TFTP server address, to assign TFTP server address distributed by DHCP
client.
184
DHCP reserved option, at present Option184 is mainly used to carry
information required by voice calling. Through Option184 it can distribute IP
address for DHCP client with voice function and meanwhile provide voice
calling related information.