TN3270 Server Manual

Introduction to the Guardian TN3270 Server
TN3270 Server Manual—424097-001
1-6
Guardian TN3270 Server Environment
Figure 1-4 shows a Guardian TN3270 Server configuration with a multiple TCP/IP
configuration. Note that default port number 23 is retained for the Guardian TN3270
Server. There is no conflict with the default port number 23 used for the Tandem
TELSERV (Telnet server) program because TELSERV runs on a different TCP/IP
process. In this environment, the user must connect to different IP addresses.
Because each copy of the Guardian TN3270 Server communicates with a single TCP/IP
process, the following restrictions are imposed by Tandem's TCP/IP implementation:
•
To access the Guardian TN3270 Server, you must connect to a specific IP address
and port. The IP address is determined by the subnet or subnets configured in the
TCP/IP process.
•
The Guardian TN3270 Server and the Tandem 6530 Telnet server (TELSERV) can
both run on the same copy of TCP/IP, but must use different port numbers.
Figure 1-4. Multiple TCP/IP Process Configuration
004CDT .CDD
Multiple TCP/IP Processes
(Requires separate Ethernet controllers)
Workstation
IP-ADDR1 IP-ADDR2
Guardian System
TCP/IP
Process 1
Controller
TN3270
TELSERV
Port 23
PCT
Guardian TN3270
Server Port 23
TCP/IP
Process 2
Controller