Promax MO-160 Manual De Usuario página 88

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BOOTP (Bootstrap Protocol) is an UDP network protocol used by network
clients to automatically obtain an IP address. This process is typically
carried out as part of the boot-up sequence of a network device. This
protocol enables dummy terminals with no hard disk to obtain and IP
address before starting to load an advanced operating system.
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AutoIP or ZeroConfing is a set of techniques that automatically create a
usable IP address with no need for configuring special servers. Traditional
class B networks use the 169.254.x.y set of addresses for this purpose. It is
not advised to use this method because the so-generated address might
not be visible to the other devices connected to the network.
In static IP address assignment the user can set the 4-byte IP address of the
MO-16X using the menu entries located under the CONFIGURATION menu. Once
changed, this will be the IP address assigned to the modulator until it is modified again
by the user.
It is the responsibility of the user to choose an IP address lying within the valid
range of addresses associated to the IP network the MO-16X is to be connected to.
Currently, three classes of networks are commonly used. These networks are
distinguished by the number of bytes used to identify the network and also by the
numeric range used for the first octet.
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Class A networks are identified by the first byte, which ranges from 1 to
126. There is a total of 126 class A networks with a possible number of
hosts/clients of 16.5 million.
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Class B networks are identified by the first two octets, the first of which
ranges from 128 to 192. There is a total of 16384 class B networks, with a
total of 65534 hosts per network.
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Class C networks are identified by the first three octets, the first of which
ranges from 192 to 223. There is a total of 2.1 million class C networks with
a maximum of 254 hosts or clients each.
IP addresses 224.x.y.z and above are reserved for special purposes such as
multicasting.
Network devices which are not connected to the outside world need not have
globally-unique IP addresses. Three reserved private network ranges of IP addresses
have been standardised:
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Class A. Address range 10.0.0.0 to 10.255.255.255
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Class B. Address range 172.16.0.0 to 172.31.255.255
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Class C. Address range 192.168.0.0 to 192.168.255.255
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USER'S MANUAL. MO-16X
04/2008