Westermo RedFox Series - Manual (Page 527)

Westermo OS Management Guide
Version 4.17.0-0
Listening
Interfaces The Listening Interface specifies on which interface(s) the
relay agent will listen for client requests. DHCP server re-
sponses may come in through any interface.
DHCP
Servers The DHCP Servers settings determine to which DHCP servers
each DHCP client request will be sent. At most two servers
may be configured.
Global
Option 82
Settings The Global Option 82 Settings determine how the DHCP
Relay Agent Information option, also known as Option 82, will
be handled. The policy specify how to treat incoming client
requests that already contain an Agent Information option.
❼ Disable: Do not add option 82 field. Any existing option
82 will be retained.
❼ Forward: Adds a new option 82 or forwards any existing
option 82.
❼ Append: Appends a new option 82 in addition to any
existing option 82.
❼ Discard: Drops the whole packet if it contains an option
82.
❼ Replace: Removes any existing option 82 and adds a
new option 82.
❼ Require: Requires that the incoming packet contains an
option 82 otherwise it will be dropped.
The Circuit ID setting determines how the Circuit-Id field of option 82 will be
filled. It can be one of None, Port Name and Port Description. None will
leave this field with zero length, Port Name will fill this field with the port type
and name of the port as seen on front foil, stripped of any whitespace. E.g. Eth6
for Ethernet port 6. Lastly Port Description will use the description given to the
port in the port settings.
In a similar fashion the Remote ID tells how the remote id field of option 82 will
be set. None set its length to zero, IP sets it to the IP address of the inbound
interface. MAC uses the base MAC address of the unit. Lastly, System Name
uses the hostname of the system.
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