JVC KA-DV350U, Инструкция по эксплуатации

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IP address
Identification number assigned to each computer that
is connected to a network. The address is used for
communication between network devices.
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Global IP address:
Just as different IP addresses are needed on a
network, all PCs using the Internet worldwide
must use a unique IP address. This IP address
is referred to as “global IP address”.
Normally, the global address is assigned by the IS
provider.
●
Local IP address:
In an environment not connected to the Internet
(within a household, within a company, etc.),
separate IP addresses can be used freely within
a network.
This IP address is referred to as “local IP ad-
dress”.
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IP addresses are categorized into 3 classes
depending on the number of PCs structur-
ing a network.
“Class A IP addresses” are used for large-scale
networks, “Class B IP addresses” are used for
medium-scale networks and “Class C IP ad-
dresses” are used for small-scale networks.
Within a network, all IP addresses must be of
the same class. Each IP address is structured
by a series of 4 digit numbers separated by a
period. The first number of the IP address indi-
cates the class.
* “224 ~ 255” are normally not used for IP addresses.
For example, a network structured by a few PCs to
dozens of PCs would use Class C IP addresses.
Normally, the following special IP addresses are
used when structuring a network.
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Port number
Number used for detecting applications and
service during TCP/IP communication.
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TCP/IP
Abbreviation for Transmission Control Pro-
tocol/Internet Protocol and is one of the pro-
tocols used during network connection.
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UDP
Different from TCP, UDP is a low-level pro-
tocol that does not perform receive checks.
In some cases, missing and distorted im-
ages may occur due to packet loss.
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About proxy server
A proxy is a “relay point” for accessing the
Internet. When enabling “Use a proxy
server”, the proxy server will make access
to the Internet.
Since various access information is cached
at this time, downloading will be faster when
reloading the same information from the
Internet since the data is loaded from the
proxy server.
Class
Class A
Class B
Class C
Application (number of PCs
structuring the network)
For large-scale networks
(max. approx. 16 million units)
For medium-scale networks
(max. approx. 65,000 units)
For small-scale networks
(max. approx. 120 units)
Glossary
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Class indicated here
IP address xxx.xxx.xxx.xxx
First number of
the IP address
1 to 127
128 to 191
192 to 223
Class
ClassA
ClassB
ClassC Set IP address
10.0.0.0 - 10.255.255.255
172.16.0.0 - 72.31.255.255
192.168.0.0 - 192.168.255.255