ZyXEL Communications IES-22A - Figure 90 Advanced Application > DHCP Relay; Table 56 Advanced Application > DHCP Relay

Chapter 26 DHCP Relay
IES-708-22A User’s Guide
183
Figure 90 Advanced Application > DHCP Relay
The following table describes the labels in this screen.
Table 56 Advanced Application > DHCP Relay
LABEL DESCRIPTION
Enable DHCP
Relay:
Enable DHCP relay to have the IES-708-22A relay DHCP requests to a DHCP
server and the server’s responses back to the clients.
Relay Mode Specify how the IES-708-22A relays DHCP requests.
Auto - The IES-708-22A routes DHCP requests to the active server for each
VLAN.
Both - The IES-708-22A routes DHCP requests to the primary and secondary
server for each VLAN, regardless of which one is active.
Enable Option82
Sub-option1
Enable DHCP relay info to have the IES-708-22A add the originating port
numbers to DHCP requests regardless of whether the DHCP relay is on or off.
Sub-option1 (Circuit
ID)
Use this field to specify up to 23 English keyboard characters of additional
information for the IES-708-22A to add to the DHCP requests that it relays to a
DHCP server.
Examples of information you could add would be the chassis number of the IES-
708-22A or the ISP’s name.
Enable Option82
Sub-option2
Enable DHCP relay info to have the IES-708-22A add the sub-option 2 (Remote
ID) to DHCP requests regardless of whether the DHCP relay is on or off.
Sub-option2
(Remote ID)
Use this field to specify up to 23 English keyboard characters of additional
information for the IES-708-22A to add to the DHCP requests that it relays to a
DHCP server.