Black Box LB3104A series, Руководство по настройке

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CHAPTER 5: Advanced Setup Menu
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The options in the Host Parameters menu are described below.
D
EVICE
ID
Select this option to view and/or modify the following arbitrary parameters.
Device Name
Select this parameter to assign an arbitrary name to Ethernet Extender for identification by the system
manager; for example, “Accounting.”
Contact Person
Select this parameter to enter the name of the person to be contacted with matters pertaining to the system; for
example, “John Doe.”
System Location
Select this parameter to enter the physical location of the device; for example, “Building 3 Floor 4.”
MAC Address
Select this parameter to assign a MAC address locally. This allows you additional control of the devices in the
LAN. The Ethernet Extender can be used with the burned-in (default) address provided by the manufacturer
or with a locally administered address; for example, 4020 2D16 123.4. Locally administered addresses are very
useful for managing large networks.
IP H
OST
Select this option to configure the following IP parameters.
IP Address
Every device on a TCP/IP network must have an address to identify it. The IP address is a value consisting of
the network address and the host address on that network. The value assigned to a network depends on the
number of computers on that network.
The IP address is a 32-bit number. The number is made up of 4 parts, with each part consisting of 3 digits. One
part of the address identifies the network and another part of the address identifies the host. Which numbers in
the address identify the host depends on the class.
There are 5 classes of IP addresses. Each class represents a network having a certain number of computers. For
example, a Class C address is given to a network having from 1 to 255 computers. Table 5-1 gives the ranges for
different classes of IP addresses.
Table 5-1. IP Classes
Class Range
A 0.0.0.0 to 127.255.255.255
B 128.0.0.0 to 191.255.255.255
C 192.0.0.0 to 223.255.255.255
D 224.0.0.0 to 239.255.255.255
E 240.0.0.0 to 247.255.255.255
The numbers in each part of the code are translated into binary. The binary code identifies the network and
the host.