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Eicon Connections for Linux User’s Guide
page 41
You may assign your own IP addresses for this test, but it is recommended that you use the
IP addresses suggested in
Resources for the Test System below.
The Test System
The test system described here links two Linux systems together back to back through their
Eiconcards. This procedure also tests the connection backup feature. Although this setup
cannot be considered an internetwork, it tests the Eiconcards’ transmission and reception of
IP datagrams over an X.25, Frame Relay, PPP, or Multilink PPP link.
To simplify the discussion below, the names Sys-1 and Sys-2 are used to identify the two test
systems.
Resources for the Test System
If you performed the installation as described in the Eiconcard Connections for Linux Release
Notes (Readmefirst.txt), you now have a Linux system (Sys-1) made up of the following:
•Hardware
i386-based or higher Linux system
An Eiconcard
•Software
•Linux
Eiconcard Services package
Eiconcard Routing Services package
A null-modem RS-232 cable or V.35 cable is also required.
To perform the tests, you will need to set up a second system (Sys-2) that is equivalent to
the first. Each system must be uniquely addressed.
Before continuing, make sure that the complete installation procedure has been performed
for Sys-1 and Sys-2.
When both the installations are complete and the systems rebooted, messages referring to
the Eiconcard, the Eiconcard Streams Device Driver (Eiconcard Services package), TCP/IP,
and Eiconcard Routing Services appear in the Linux boot messages.
The Addressing Scheme
Before continuing with the test, you should take a look at the proposed addressing scheme.
Both IP addresses and X.25 DTE addresses (for the X.25 connection) must be considered when
coming up with an addressing scheme for an IP internetwork that uses Eiconcard Routing
Services.
In this simple test the scheme uses an arbitrary assignment of four addresses—two X.25 DTE
addresses (for the X.25 connection), and the two IP addresses. The addresses used in this
test are:
Address Sys-1 Sys-2
X.25 DTE address 3020001 3020123
IP address 192.1.100.1 192.1.100.2
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