MINOLTA-QMS Magicolor 2 Desklaser Specifications download pdf (Page 261)

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Once the Internet address, subnet addresses, and subnet masks are in place, infor-

mation can be sent, or routed, to any destination in the Internet. Both hosts and gate-

ways participate in the routing process.

If information is sent between two devices on a single physical network, or subnet, no

gateways are involved. The sending device encapsulates the datagram in a physical

frame, binds the destination internet address to a physical hardware address, and

sends the resulting frame directly to the destination.

If the information is sent between two devices on two different physical networks, how-

ever, the internet gateways form a cooperative, interconnected structure. Datagrams

pass from gateway to gateway until they reach a gateway that can deliver them directly

to a device on that physical network.

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TCP/IP defines a means for the network administrator to configure the network that

best suits the network environment at a site. One method is to define the 32-bit TCP/

IP network address in terms of the number of networks and the number of hosts at the

site. The network address is partitioned into a network part and a host part.

There are 3 common partitions—Class A, Class B, and Class C. The classification is

done by the highest order bits. For example, a 0 in the highest order bit of the 32-bit

address indicates that the address is Class A. Thus, the next 7 bits constitute the net-

work address, and the last 24 bits form the host address. The high order bits also con-

stitute the network mask for the Class A address.

The following table identifies the differences between Class A, B, and C addresses.

Class Uses Highest

Order Bits

(Binary)

Network

Address

Size

Host

AddressSiz

Network Mask

(Hex)

A Sites with few

networks and many

hosts

0 7 bits 24 bits 0xFF000000

1 2 ... 256 257 258 259 260 261 262 263 264 265 266 ... 275 276

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MINOLTA-QMS Magicolor 2 Desklaser Specifications Page 261