ZyXEL Communications IES-708-22A - Manual (Page 182)

Chapter 26 DHCP Relay
IES-708-22A User’s Guide
182
Figure 88 DHCP Relay Agent Circuit ID Sub-option Format
The Agent Information field that the IES-708-22A adds also contains an “Agent Remote-ID
sub-option” of information that you specify.
The following figure shows the format of the Agent Remote ID sub-option. The 2 in the first
field identifies this as an Agent Remote ID sub-option. The length N gives the total number of
octets in the Agent Information Field. Then there is the number of the port (in plain text
format) upon which the DHCP client request was received. The next field (B in the figure) is 0
to 23 bytes of optional information that you specify. This is followed by the name and
telephone number configured for the DSL port. The port number, optional information (B in
the figure), DSL name and DSL telephone number fields are separated by forward slashes.
Figure 89 DHCP Relay Agent Remote ID Sub-option Format
26.3 DHCP Relay Screen
To open this screen, click Advanced Application > DHCP Relay.