Reliable 3270 Application Access from Visara
Visara offers high reliability connections to your mainframe applications,
whether your desktop is a PC, thin client, or a more traditional
fixed-function terminal. The Visara S-series communication servers,
provide support for large quantities of TN3270E clients, as well
as coax, IPX, ASCII, and Telnet clients, all on a dedicated communications
server platform, to provide high reliability and throughput.
The Visara S-series platforms provide unparalleled support in a
very scaleable platform. Support as few as 16 or as many as 4048
users on the same 1174-25S platform. With the multiprocessor architecture
of the 1174 S-series, adding more users does not mean compromising
performance. With addition of every interface, the 1174 platform
provides additional processing capabilities to supply reliable and
predictable performance results.
The S-series even provides scaleable solutions that span multiple
1174 platforms, providing reliability beyond that of a single platform.
Through the LINCS Session Management System (SMS), users can access
multiple 1174 TN3270E servers as if they were one server. SMS allows
TN3270E sessions to be spread across multiple 1174 servers providing
a fault-tolerant, load-balancing server function, not depending
on the health of any individual server, or host communication link.
User configurations are kept simple, with a single configuration
and procedure to access the host through whichever 1174 is most
With the 1174 S-series, solutions for even tens of thousands of
users can be made simple and reliable.
Up to 16 Different Host Connections
The S-Series platform supports up to sixteen 3270 connections to
different hosts or LPARs. These host connections can be over SNA
and Non-SNA communication links that include ESCON, Bus and Tag
channel, SDLC, Frame Relay, BSC, X.25, Token Ring and Ethernet.
Even mainframe access through APPN with DLUR is supported!
Connections for any or even all of these interfaces can be supported
on the same platform as needed. Configuration of users is very dynamic.
Clients can be:
Mapped to a specific host and LU
Mapped to a pool of Lus associated with a specific host
Mapped to a pool of Lus associated with multiple host links
Mapped to a connect menu that allows users to select the host
connection that is needed
Allowed to request the host and required LU through the client's
In addition to mainframe-based security, 1174 S-series offers a variety
of security options. Among the security options offered are:
IP Address Filtering
IP Subnet filtering
Optional non-standard TCP port configuration
The 1174 S-series TN3270E communication servers are feature rich.
Besides offering specific LU assignments to a user workstations
and printers, up to 32 different pools can be configured, providing
an easy way to accommodate work groups, departments, and remote
sites. TN3287 printers support includes LU1 (SCS), LU3 (DSC), and
Non-SNA (BSC and channel/ESCON).
In addition to supporting TN3270, TN3270E, and TN3287 clients,
the S-series supports Telnet clients (Windows desktops), LPD/LPR
printers and Socket printers (even IPDS).
Load balancing comes standard with the 1174 LINCS software, using
the SMS feature. By running SMS, you can implement multiple servers
to provide fault tolerance in your network. Users will get their
session from whichever 1174 server is most available. Only one configuration
is required at the client workstation to request their session.
The SMS software responds to the session request with the IP address
of the most eligible 1174 server. The connection is made automatically
by the client's emulator, making the whole process completely transparent
to the user. The SMS feature is completely compatible with virtually
SMS keeps up with all 1174 servers to determine their availability.
SMS will automatically bypass servers that are removed from service,
ensuring that every request for a session is directed to an active
1174 TN3270 server.
Printer support on the 1174 platform is very simple and reliable.
The 1174 offers the following options:
Print directly to workstation-attached printers using TN3287
Send print jobs to a Line Print Daemon (LPD)
Print to a LAN-attached printer by connecting to its special
TCP printer port
Direct attached coax or ASCII printers
Host printer configurations include all the standard VTAM LU1 and
LU3 definitions. The LINCS software used by the 1174 provides EBCDIC/ASCII
conversion, as well as formatting command translation for most LU1
commands. Even IPDS data streams can be sent to printers capable of
receiving and interpreting them over a LAN or coax link.
Special transparent commands are also supported, allowing for special
formatting, bar code printing, or anything else that your printer
The 1174 platform offers a wide variety of management tools.
Manage the 1174 using Telnet
Direct coax or ASCII terminal connection
Visara's eManager 2000 management product
Dial-up ASCII terminal or PC
You can also monitor the 1174 using standard SNMP tools.
The 1174 S-series communication servers are dedicated communication
platforms designed to provide robust performance while maintaining
a very high level of reliability, unlike communication software
running on a general purpose PC-based platform. The multiprocessor/multitasking
architecture of the 1174 provides high performance to clients, whether
you are supporting dozens of clients or several hundreds (thousands)
of clients. The SMS feature ensures that users can obtain sessions
even if a server, phone line, network, or host becomes temporarily
The 1174 TN3270 solution might be the most affordable TN3270E server
solution around. With built-in NetView support, free load-balancing
through SMS (some vendors charge thousands of dollars for this feature
alone), disaster recovery, and ease of installation, how can you
afford not to be using the 1174.
Up to 4048 TN3270/TN3270E/TN3287 clients/sessions per 1174 (Model
Up to 256 LAN printers (LPD or Socket)
Up to 16 different hosts/LPARs
Up to 256 Telnet users (up to 10 host sessions for each)
Host interfaces supported:
ESCON (SNA, Non-SNA, Consoles)
Bus and Tag (SNA, Non-SNA, Consoles)
SDLC (up to T1/E1)
Frame Relay (up to T1/E1)
X.25 (up to T1/E1)
BSC (up to 19.2 Kbps)
TN3270/TN3270E/TN3287 Client interfaces
Coax (Visara NCT products)
Other clients supported
Standard coax-attached terminals and printers