ZyXEL Communications GS2220 Series - Dhcpv4 Option 82 Profile

Chapter 44 DHCP
GS2220 Series User’s Guide
373
44.4.1.2 Sub - O ptio n Fo rm a t
There are two types of sub-option: “Agent Circuit ID Sub-option” and “Agent Remote ID Sub-option”.
They have the following formats.
The 1 in the first field identifies this as an Agent Circuit ID sub-option and two identifies this as an Agent
Remote ID sub-option. The next field specifies the length of the field.
44.4.2 DHC Pv4 O ptio n 82 Profile
Use this screen to create DHCPv4 option 82 profiles. Click IP Applic a tio n > DHC P > DHCPv4 in the
navigation panel and click the Optio n 82 Pro file link to display the screen as shown.
Fig ure 283 IP Application > DHCP > DHCPv4 > Option 82 Profile
The following table describes the labels in this screen.
Table 192 DHCP Relay Agent Circuit ID Sub-option Format
SubOpt Code Length Value
1
(1 byte)
N
(1 byte)
Slot ID, Port ID, VLAN ID, System Name or String
Table 193 DHCP Relay Agent Remote ID Sub-option Format
SubOpt Code Length Value
2
(1 byte)
N
(1 byte)
MAC Address or String
Table 194 IP Application > DHCP > DHCPv4 > Option 82 Profile
LABEL DESCRIPTIO N
Name Enter a descriptive name for the profile for identification purposes. You can use up to 32 ASCII
characters. Spaces are allowed.
Circuit-ID Use this section to configure the Circuit ID sub-option to include information that is specific to
the relay agent (the Switch).
Enable Select this option to have the Switch add the Circuit ID sub-option to client DHCP requests that it
relays to a DHCP server.