HP Deskjet 995c Printer series - ethernet basics

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ethernet basics

The printer's built-in ethernet feature allows you to connect the printer directly to a

10/100 Base-

T

ethernet network without the aid of an external print server.

hardware

hubs and routers

On an ethernet network, computers and the printer are each connected to a

hub

or a

router

.

an example of an ethernet network

Hubs and routers may look similar, but there is one important difference.

Hubs are passive-other devices on the network plug into the hub in order to communicate with

one another. The hub does not manage the network.

Routers are active. Routers have network administration tools, such as

firewalls

and

DHCP

. A

router can act as a

gateway

, while a hub cannot.

cables

Use an unshielded CAT-5 ethernet cable to connect the printer to an ethernet network. Ethernet

cables have an RJ-45 plug.

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ethernet basics

rj-45 plug

To prevent damaging the printer, do not use a phone

cord to connect the printer to an ethernet network,

and do not connect the printer to a phone jack.

network communication

TCP/IP

Devices on a network communicate with one another using a "language" called a

protocol

. The

printer is designed to operate on networks that use a popular protocol called

TCP/IP

.

IP address

Each device on a network identifies itself with a unique

IP address

. Most networks use

DHCP

or

AutoIP

to automatically assign IP addresses.

internet connections

Ethernet networks may or may not be connected to the Internet.

If you place the printer on an ethernet connected to the Internet, it is recommended that you

use a

gateway

so that the printer's

IP address

is assigned through

DHCP

.

A gateway can either be a

router

or a Windows computer running

Internet Connection Sharing

(ICS)

. For more information about ICS, see the documentation that came with the Windows

computer.

examples of ethernet networks

These are some common ethernet network configurations:

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ethernet basics

shared internet connection with a router acting as a gateway

In this example, a

router

manages the network connections and acts as a

gateway

between the

network and the Internet.

shared internet connection with a PC acting as a gateway

In this example, the network devices are connected to a

hub

. A computer on the network acts as

the

gateway

between the network and the Internet. The gateway computer uses

Windows

Internet Connection Sharing (ICS)

to manage the network connections and provide Internet

access to the other devices.

DSL or cable internet connection without a gateway

This example looks similar to the first example. However, in this example, the network devices

are connected to a

hub

, rather than a

router

. The hub is directly connected to the Internet.

Caution!

HP does not recommend this configuration. If possible, use a gateway to

manage your network's Internet access in order to limit exposure to viruses and guard

against unwanted entry.

ethernet network without an internet connection

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ethernet basics

In this example, the network devices are connected to a

hub

. Devices use

AutoIP

to obtain

IP

addresses

.

using the printer on an ethernet network

Computers on the network send print jobs directly to the printer, which prints them in the order

received.

printer's ethernet capacity

The printer can accept print jobs sent simultaneously from four users.

For example, if five users each send a print job to the printer at the same time, the printer

accepts four of the print jobs and rejects the fifth. The user who sent the fifth print job should

wait a few minutes and then resend the print job.

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connecting the printer to an ethernet network