Westermo RedFox Series User Manual
Page 492
Westermo OS Management Guide
Version 4.17.0-0
✯ Remote-id: The remote-id is optional, but needed to distinguish be-
tween relay agents on the same subnet. A WeOS relay agent de-
faults to using its base MAC
address as remote-id.. E.g., spec-
ify ”00077c8209d0” (hex) for a WeOS relay agent with base MAC
00:07:7c:82:09:d0.
Note: to assign IP addresses per (local) ports on the DHCP server
itself in WeOS v4.17.0, you will need to setup a Relay Agent on the
same unit (see
– Deny statements: The fixed assignment methods (MAC, Client-id, Op-
tion 82) can also be used to deny clients an IP address. To specify this
feature, use the keyword ”deny” instead of an IP address in the assign-
ment command.
A note on preference order
A client request associated with a subnet served by the DHCP server
will be checked for matching IP assignment entries in the following pref-
erence order
: Client-Id (first), MAC address, DHCP Option 82, and fi-
nally Address pool (last).
a
This preference order is used as of WeOS v4.17.0, but may be changed in future
releases.
22.1.2.2
Configuration Options other than IP address
In addition to IP address, the WeOS DHCP server allows you configure the follow-
ing configuration options:
❼ Lease time: The lease time can be configured in range 120-5256000 sec-
onds. It defaults to 864000 seconds (10 days).
❼ Netmask: The IP netmask is only configured implicitly, i.e., it is taken from
the subnet definition. IP netmask is passed to the client in DHCP option 1.
By default, the netmask is set to 255.255.255.0.
❼ Router IP address: The DHCP server will pass information about what router
(default gateway) the DHCP client should use. If you leave this blank, the
will automatically fill out a value likely to work for the client.
2
To find the base MAC of your WeOS unit, see
(Web) or
(CLI).
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