HP J6039C - JetDirect 200M Print Server User manual

User's Guide
for HP Jetdirect 200m print server
and HP Jetdirect 250m print server
Contents:
1. Basics of networking and network printing
2. General information about the print servers
3. Installation of the print servers.
4. Configuration and management -- please refer to the HP Jetdirect Administrator's Guide. In that
document, click on one of these topics in the contents panel on the left:
❍TCP/IP Configuration
❍Using the Embedded Web Server
❍Configuring for LPD printing
❍FTP printing
❍Security features
5. Troubleshooting the print servers
6. Technical support for the print servers
7. Specifications and regulatory information for the print servers
8. Limited warranty for the print servers
9. Some useful tools and techniques
❍Tools
■Installer
■Embedded web server
❍Techniques
■Printing a configuration page
■Setting a new IP address
■Performing a cold reset (reset to factory defaults)
©2001, 2002 Hewlett-Packard Company

Networking Basics
Please click on a title to view a document.
The Network Basics Tutorial
A brief overview of:
●Networks
●Network Printing
●Installing a Network Printer
Tips on Getting Started
Answers to common questions:
●Which CD should I use?
●Where do I find the printer driver?
●When do I stop?

The
Network Basics
Tutorial
This tutorial tells you about:
●Networks
●Network Printing
●Installing a Network Printer
Click the button to continue.

Section 1:
Networks
Click the button to continue.

NETWORKS
What you want . . .
. . . is for all your computers to be
able to:
●Communicate -- send
and receive e-mail, and
participate in
conferences
●Share information --
transfer files among
systems, and get
information from central
databases
●Share resources -- use
shared printers,
scanners, and servers

NETWORKS
The problem is . . .
. . . standalone computers have
no way to talk to each other, so
attempts at communication fail.

NETWORKS
The solution: a local
area network
A local area network (or LAN)
provides connections that tie the
computers together and allow
them to communicate. (The most
common type of local area
network may also be referred to
as an Ethernet LAN or an
Ethernet.)
Local area networks can be
either wired (as shown here) or
wireless. We will look at the
different types in the next few
pages.

NETWORKS
Wired LANs
As the name implies, a wired
LAN connects computers (and
other network devices)
physically, using wires. A typical
LAN uses twisted-pair wiring
(similar to telephone wiring) to
connect each computer to a
central hub. The hub transmits
network communications
between computers.
Wired LANs offer high-speed
communication, as well as
reasonable security and
reliability. In general, however,
they are not as flexible as
wireless LANs.
Most wired LANs conform to the
IEEE 802.3 standard. The most
common wiring schemes use
twisted-pair wiring or thin
coaxial wiring.
Click on these links for
more details on LAN wiring:
●Detail: twisted-pair
wiring
●Detail: thin coaxial
wiring
●Detail: computer
connections

NETWORKS
DETAIL
Wiring: twisted-pair
The most common wiring used
for LANs is twisted-pair wiring,
similar to the wiring used for
telephones. This wiring connects
the computers or other network
devices to a central hub. The use
of telephone-type wiring makes
it easy for the persons who
administer your telephone
wiring to administer the network
wiring as well.
RJ-45 connectors are used to
connect the twisted-pair wiring
to the computer and to the hub.
The wire for a network can be
graded in a number of
categories; Category 5 wiring is
the most popular grade. Category
5 wiring has superior electrical
characteristics, and we strongly
recommend it for all twisted-pair
networking applications. The
wire grade is usually marked on
the cable jacket.
The equipment for a twisted-pair
LAN commonly operates at a
data rate of either 10 Mbps
(megabits per second) or 100
Mbps. Category 5 wiring is
required for 100-Mbps
operation. A 10-Mbps LAN can
run on either Category 3 or
Category 5 wiring (though we
strongly recommend Category 5).
At either data rate, cables may
extend up to 100 meters (328
feet) from the hub to the
computer.
A twisted-pair network running
at 10 Mbps is called a type
10Base-T network. A twisted-
pair network running at 100
Mbps is called a type 100Base-T
network.

NETWORKS
DETAIL
Wiring: thin coax
An alternative to twisted-pair
wiring is thin coaxial cabling,
often called thin coax. This
cabling is known as RG-58A or
RG-58U cable, and has an
impedance of 50 ohms. (It looks
similar to the 75-ohm thin
coaxial cable used in television
installations, but the television
cable will not work in a network.)
The connectors used with thin
coax are BNC connectors. The
cable is a continuous cable, up to
185 meters (606 feet) long, made
up of shorter segments with BNC
connectors at each end. It
connects to computers and other
devices along its length using
BNC "T" connectors, and there is
a 50-ohm terminator at each end
of the cable. This cabling scheme
does not use a hub.
A thin coaxial LAN operates at a
data rate of 10 mbps (megabits
per second), and is known as a
type 10Base2 network.

NETWORKS
DETAIL
Computer
connections
For twisted-pair LANs: A
desktop computer connects to a
twisted-pair LAN through a
network interface card (NIC) that
resides in a slot in the computer,
or through a similar interface
built in to the computer itself.
The RJ-45 plug of the network
cable plugs into an RJ-45 jack on
the card or in the computer. A
portable computer may have a
built-in connection using an RJ-
45 jack, or it may use a PC card
that inserts into a PC card slot in
the computer. (Some PC cards
take up two slots and have room
for an RJ-45 jack that is integral
with the card; others take up only
a single slot but require a short
cable that provides the RJ-45
jack.)
For thin coaxial LANs: A
desktop computer typically
connects to a thin coaxial LAN
through a network interface card
(NIC) ; built-in BNC connections
are uncommon. Portable
computers connecting to thin
coaxial LANs use a PC card with a
short cable that provides a BNC
connection. In all cases, the LAN
cable connects to the computer
through a BNC "T" connector.
Hidden network cables and
equipment: In many network
installations, the hubs are kept in
equipment closets and the cables
are hidden in the walls. In these
installations, wall outlets with RJ-
45 jacks are the only visible
components of the network
wiring. For such a network, you
use a short length of network
cable to connect from the
computer to the wall jack.

NETWORKS
Wireless LANs
In a wireless LAN, information
travels through the air in radio-
frequency signals instead of
through wires. This makes
wireless LANs very flexible, and
setup and reconfiguration are
very easy. Communication
speeds on wireless LANs,
however, tend to be slower than
on wired LANs, and it generally
takes more work to make a
wireless LAN as secure as a
wired LAN.
Most wireless LANs conform to
one of the subsets of the IEEE
802.11 standard; the most
common subset is currently
802.11b. Data rates for 802.11b
LANs can be as high as 11 Mbps
(megabits per second). Typically
a wireless device in an 802.11b
LAN can transmit signals across
a distance of about 30 meters
(100 feet) in a semi-open office
(no walls) and still maintain a
data rate of 11 Mbps. It is
possible to extend the range to
about 100 meters (300 feet), but
at such a distance the data rate
drops off to 1 Mbps.
802.11b wireless LANs operate in
the 2.4 GHz frequency band.
There are several channels
(frequencies) that wireless LANs
can use in this range.
Government regulations
prescribe which channels may be
used in various parts of the
world.
There are two basic wireless
networking topologies --
infrastructure mode and ad hoc
mode; these are described in the
detail pages (see below).

Click on these links for
more details on wireless LAN
topologies:
●Detail: infrastructure
mode
●Detail: ad hoc mode
●Detail: standalone
peripheral connections
●Detail: computer
connections

NETWORKS
DETAIL
Infrastructure
mode
Terminology: Infrastructure
mode is referred to as a "basic
service set" (BSS). It's topology is
sometimes called a "star
topology", and it may also be
called "enterprise mode" because
it is the preferred topology for
large networks. On a network of
Apple Macintosh computers, it
may be called an "Airport
network".
Topology: In infrastructure
mode, all signals travel through
an access point. Like the hub in a
wired LAN, the access point re-
sends the incoming signals out to
the computers and other devices
on the network. (The access
point performs additional
functions when a wireless LAN is
connected to a wired LAN.)
Infrastructure mode is suitable
for wireless LANs of all sizes.
In infrastructure mode the
access point sets the channel for
all device that communicate
through it.
A wireless LAN can have
multiple access points. This can
expand the capacity of the
network and extend its range,
allowing users to roam with their
portable computers and still stay
connected to the network.

NETWORKS
DETAIL
Ad hoc mode
Terminology: Infrastructure
mode is referred to as an
"independent basic service set"
(IBSS). It is sometimes called
"peer-to-peer mode". On a
network of Apple Macintosh
computers, it may be called
"computer-to-computer mode".
Topology: In ad hoc mode the
wireless devices on a network
communicate directly with each
other, and access points are not
used. Ad hoc mode is used for
very small networks.
Performance in an ad hoc
network degrades as you add
more devices to the network;
typically, ad hoc networks
connect no more than six
devices.
In ad hoc mode you can select
the channel. Make sure that all
devices on the network are set to
the same channel.

NETWORKS
DETAIL
Standalone
peripherals
Not all wireless connections are
network connections. Though the
distinctions may often be
somewhat blurry, some wireless
technologies -- such as the
Bluetooth technology that is
becoming popular in mobile
phones and handheld computers --
are more about connecting a
computing device to a peripheral,
rather than connecting computers
and other devices in a network.
For instance, when a handheld
computer connects with a walk-
up wireless printer, or when a
mobile phone connects with a
vending machine, the interactions
between them are typical of a
standalone computer talking to a
peripheral device. In essence, the
wireless connection replaces the
cable in a standard peripheral
connection. Compared to network
connections, such wireless
peripheral connections work at
short ranges and slow speeds.
(In this tutorial, we will
concentrate on the networking
that is typified by 802.3-type
wired networks and 802.11b-type
wireless networks.)

NETWORKS
DETAIL
Computer
connections
Connections at the computer for
wireless networking connections
are simpler than wired ones just
because there are no wires to
connect.
Wireless connections are most
common in portable computers.
Increasingly, notebook
computers come with built-in
wireless networking. For
notebook computers that don't
have built-in networking, you
can plug a wireless networking
card into the computer's PC card
(PCMCIA) slot. (Wireless
networking is based on radio
technology, and in many add-on
cards the antenna protrudes
slightly from the PC card slot.)
Desktop PCs can have wireless
networking, too. A typical
arrangement is for an adapter in
a desktop PC to contain a PC
card slot, into which you plug the
same kind of wireless networking
card that you would use in a
notebook computer.

NETWORKS
Mixed LANs
Mixed LANs combine wired and
wireless LANs, taking advantage
of the strong points of each. For
example, a mixed LAN can
provide the flexible connections
of wireless with the high overall
throughput of a wired LAN. Such
an arrangement makes it
particularly easy for mobile
workers to connect their
notebook computers to the
network.
You create a mixed LAN by
plugging the network cable from
a wired LAN into a port on a
wireless access point. In addition
to acting as a hub for the wireless
portion of the network, the
access point acts as a bridge to
the wired portion. In a typical
case, when a computer with a
wireless LAN card comes within
range of the access point, it
connects through the access
point to the LAN (both the wired
and wireless portions) and to all
the computers and other
resources on the LAN.