Specifications

©
2002, David K. Z. Harris
30
Pg. 30
© 2002
David K. Z. Harris
Basic Architectures (#1)
Ø Adding Terminal Servers
Ø Everything on the same network
(the ‘no security worries’ model)
² TS = terminal server Hn = hosts
H
You
TS
A 1 2 3 4
H H H
LAN
Async serial
session
This presumes that you are not worried about someone on your internal
network sniffing the console sessions. In a small network, this provides the
convenience factors (fewer display devices, no switchboxes, and different
serial port speeds don’t bother us).
The terminal server is connected to the serial consoles that we care about, with
speeds set on the various terminal server ports to accommodate the speeds of
the attached devices.
The administrator(s) can sit at their workstations, and connect to the serial
ports that they want to control (using Reverse Telnet).
Remember that only one administrator can connect to any given serial port at
once in this configuration. (Although administrators can connect to many
different serial ports at one time.)
If nobody is connected to a serial port, and data coming in from the attached
device is lost. If someone *is* connected and watching, you still only have as
much logging as your scrollback buffer will provide for each session.