QTECH
Software Configuration Manual
11-156
3) The DHCP server assigns IP addresses and transmits the configuration information to the clients through the
DHCP relay agent so that the clients can be configured dynamically. The transmission mode depends on the flag field
in the DHCP-DISCOVER packet. For details, see section
DHCP Packet Format
.
11.5.3
Option 82 Supporting
Option82 is the Relay Agent Informaiton option in DHCP packet defined by rfc 3046. When DHCP client
sending requiry packet to DHCP relay, option82 will be added to packet. Option82 in this chapter supports
sub-option1, sub-option2 and sub-option5. sub-option1 is one of sub-option of option82 which is Circuit ID with the
content being interface VID and MAC address of receiving packet. sub-option2 is also the sub-option of option82
which is Remote ID and is MAC address of relay devices. sub-option5 is also a sub-option of option82 which is Link
Selection and is IP address of interface.