Brother DCP-315CN Network User's Manual page 10

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Gateway (and Router)
A Gateway is the transfer device that passes data between
networks. A gateway is a network point that acts as an entrance to
another network and sends data transmitted via the network to an
exact destination. The router knows where to direct data that
arrives at the gateway. If a destination is located at an external
network, the router transmits data to the external network. If your
network communicates with other networks, you may need to
configure the Gateway IP address. If you do not know the Gateway
IP address then contact your Network Administrator.
Node name
Node name appears in current BRAdmin Professional or
Printer configuration page. The default Node name is
"BRN_xxxxxx" ("xxxxxx" is the last six digits of Ethernet
address.)
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