Westermo RedFox Series - Manual (Page 493)

Westermo OS Management Guide
Version 4.17.0-0
– Local clients: For DHCP requests originating on the local subnets, the
DHCP server will put its own IP address on that subnet as gateway IP
address.
– Remote clients: For DHCP requests originating on remote subnets, the
DHCP server will put the IP address of the relay agent as gateway IP
address.
The router/gateway IP is passed in DHCP option 3. By default, the gateway
setting is empty, i.e., the ”auto” behaviour described above is used.
As of WeOS v4.17.0 there is no way to hinder the DHCP server to send
the router/gateway IP address (option 3). This may change in future WeOS
releases.
❼ DNS Server(s): It is possible to specify up to two DNS servers to be passed
to the DHCP client (option 6). If no DNS server is specified, the DHCP server
will fill in its own IP address as DNS server (the DHCP server unit will act as
DNS forwarder and forward any (non-cached) incoming DNS requests to the
name-server(s) configured on the unit, see
chapter 19 ).
As of WeOS v4.17.0 there is no way to hinder the DHCP server to send the
Domain Name Server option (option 6) to the client. This may change in
future WeOS releases.
❼ Domain search path: The DHCP server can be configured to pass a domain
search path to the DHCP client (option 15). (Leaving the setting empty
implies that no domain search path is sent to the client.)
❼ NTP Server(s): The DHCP server can be configured to pass up to two NTP
Servers to the DHCP client (option 42). (Leaving the setting empty implies
that no NTP server is sent to the client.)
22.1.3 General DHCP Server settings
WeOS allows you to configure a set of general DHCP server settings. These are
advanced settings, and are primarily of interest to users with special demands.
The default values are sufficient in almost all use cases.
❼ DHCP Server Listening UDP port: The DHCP server listens to UDP port 67 by
default (in-line with RFC2131[ 7 ]). It is possible to set the server port to a
different value. That may be of interest in some specific DHCP relay setups,
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