7
G&
GLIN
TM
Communications
G&R/Direct GCOS Access (DGA)
For the Bull environment Glink Professional Edition supports
the G&R/Direct GCOS Access (DGA) protocol, connecting
Glink directly to Bull mainframes without the need for a front-
end or gateway.
A need for load balancing, backup and recovery or for secure
connections might lead you to select G&R/Ggate (see below);
but if you want to make your connections in native Bull
internal protocol, direct from your workstation across the
TCP/IP network to the RFC1006 port on the mainframe,
without involving any front-end or gateway at all, then Direct
GCOS Access is what you need.
G&R/Direct GCOS Access turns your workstation into a fully
functional Bull network node in its own right. It supports
DSA200 for GCOS7 systems, DSA300 for GCOS6 systems
and GCOS8 Time Sharing, and CXI for GCOS8 TP8 systems.
G&R/Ggate DSA gateway
For the high performance, high availability Bull environment
Glink Professional Edition supports the G&R/DSA gateway
protocol, connecting Glink to Bull mainframes via one or more
G&R/Ggate gateways, optionally with load balancing and
license sharing provided by G&R/Gproxy. The connections
between your workstations and Ggate can be secured with a
choice of the Secure Socket Layer or Secure Shell encryption
and authentication protocols.
G&R DSA gateway protocol is by far the most efficient TCP/IP
protocol for accessing Bull GCOS8, GCOS7 or GCOS6
mainframes. It maps directly into DSA, the GCOS internal
protocol used by TP8, TSS, IOF, TDS and all other interactive
GCOS applications, making G&R/Ggate the fastest and most
efficient GCOS gateway on the market. Connectivity records:
UNIX server:
15.000 simultaneous sessions, 2.600 transactions a second
Windows server:
5.000 simultaneous sessions, 400 transactions a second
Ggate runs on UNIX, Linux and Windows server platforms
making it uniquely scalable and adaptable in any network
scenario.
Ggate is a standard feature of GNSP on GCOS8, and can be installed on GCOS7 Diane models. It offers far
higher throughput than TNVIP or Telnet, and it is much more reliable as regards support of application-
application dialog. Glink scripts, UVTI, OLE Automation and COM+ or .NET applications all work consistently
when used with Ggate communications.
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