Cisco 11.0 BT Manual de usuario descargar pdf (Pagina 14)

2-14 TN3270 Design and Implementation Guide

Addressing LAN Printing Requirements

In the past, large amounts of mainframe print output would be printed in the data center and the distributed to

the various branch ofﬁces overnight. Today, users expect the ability to print the host output on a LAN printer

and also to specify which LAN printer is used. For various groups, such as a sales group, this may mean that the

same type of output will be printed to different ofﬁces, depending on where they are traveling that week. This

situation raises two immediate concerns, ﬁrst is security of document and second is control of printing.

Printingsecurity ofdocument printingcan beresolved by specifyingthe clientLU nailingparameter.This restricts

access to an LU to only a particular IP address or group of IP addresses. This control is important for groups

such as a personnel department.

Printing control is more difﬁcult to address.

Figure 2-4 illustrates the control of a printing environment. The printing output is the starting point and the

control of this output can be controlled with one or many of the three choices.

Figure 2-4 Control of a Printing Environment

Central control indicates that the print deﬁnition setup and print allocation is controlled from the mainframe.

This choice is the least ﬂexible of all the options and requires the most maintenance to control. Central control

printer administration means that the printer LU and printer output deﬁnitions are statically deﬁned in the

mainframe printer application.

Workgroup-based printing is the recommended option for departments that share a common printer. The

workgroup option works with the central control option. A group of printers is deﬁned for a particular output

group or groups and all printer output is sent there. Workgroup-based printing does not require central control.

This option requires less control at the mainframe application and makes host modiﬁcations easier. This option

works well when old PCs (386/486 PCs) are decommissioned and are reused as a permanent print servers.

Decentralized mainframe printing is ideal for the traveling client. This option allows clients to specify the LU

name (using the TN3270E function) for their output and to receive their print output regardless of where they

are logged in. This provides greater ﬂexibility, but it comes with a price. For every client that uses this option,

there must be a separate printer LU.

Which method you choose to manage your LAN printing depends upon your client requirements. The most

commonly implemented solution is to use workgroup-based printing for permanently located groups and

decentralized mainframe printing for the roaming client.

Workgroup

Based

Decentralized

Mainframe

Printing

Central

Control

Printing

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Cisco 11.0 BT Manual de usuario Pagina 14