N-Tron 702M12-W Switch User Manual


 
Revision 04062009 Page 33 of 52
IP Address and Netmask settings should be consistent with the address space of the network segment where
the 702-W resides. If the 702-W’s and the administrator PC’s (which is connected to the device on the wired
or wireless interface) IP settings reside in different address spaces, the 702-W will become unreachable.
Netmask: This is a value which when expanded into binary provides a mapping to define which portions of
the IP address groups can be classified as host devices and network devices. Netmask defines the address
space of the network segment where N-TRON 702-W device resides. 255.255.255.0 (or /24) Netmask is
commonly used among many C Class IP networks.
Gateway IP: Typically, this is the IP address of the host router which provides the point of connection to
the Internet. This can be a DSL modem, Cable modem, or a WISP gateway router. The 702-W will direct
the packets of data to the gateway if the destination host is not within the local network.
Gateway IP address should be from the same address space (on the same network segment) as the N-TRON
702-W device.
Primary/Secondary DNS IP: The Domain Name System (DNS) is an Internet "phone book" which
translates domain names to IP addresses. These fields identify the server IP addresses for the N-TRON 702-
W device to look for the translation source.
Primary DNS server IP address should be specified for device management purposes.
Secondary DNS server IP address is optional. It is used as the fail-over in case the primary DNS server will
become unresponsive.
DHCP Fallback IP: If the Bridge is placed in Dynamic IP Address mode (DHCP) and is unable to obtain
an IP address from a valid DHCP server, it will fall back to this static IP address.
If the IP settings of the N-TRON 702-W powered device are unknown, they can be retrieved with the help
of the N-TRON Discovery Utility. Multi-platform Utility should be started on the administrator PC which
resides on the same network segment as the N-TRON 702-W device.
The N-TRON 702-W system will return to the default IP configuration (192.168.1.202/255.255.255.0) if the
Reset to defaults routine is initiated.
Spanning Tree Protocol: Multiple interconnected bridges create larger networks using the IEEE 802.1d
Spanning Tree Protocol (STP), which is used for finding the shortest path within the network and to
eliminate loops from the topology.
If the STP is turned on, the N-TRON 702-W Bridge will communicate with other network devices by
sending and receiving Bridge Protocol Data Units (BPDU). STP should be turned off (selected by default)
when the N-TRON 702-W device is the only bridge on the LAN or when there are no loops in the topology
as there is no sense for the bridge to participate in the Spanning Tree Protocol in this case. Note that STP
is only supported with WEP encryption.
Click Change button to save the changes.