File name 19781010_Alto_Gateway_Operation.pdfXEROX SDD ARCHIVES
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BUSINESS SYSTEMS
Systems Development Department
To: Distribution Date: October 10, 1978
From: Hal Murray Org: SDD/SD System Architecture
Subject: Alto Gateway Operation Filed: [Iris] AltoGateway.bravo&press
111is memo documents the operation of the Alto Gateway program. You are assumed to be
reasonably familiar with Altos. Familiarity with Mesa will be very helpful. You might also want to
read Ed Taft's memo titled "Nova Gateway Operation". It is stored on
[IVY] GatewayOperation.press.
I have avoided any details of the current network topology since it is changing frequenlly. There
arc two documents that are very helpful when trying to track down network troubles. They are
[MAXC] AltoNetwork.prcss and [MAXC] Pup-Network. txt. I suggest that you keep a
reasonably up to date copy handy.
There is also a one page summary on Iris] AltoGateSummary.bravo&press.
1. Normal Operation
Power Up and such
The only problem with turning a Gateway Alto on and/or off is setting the time if there is
not another Gateway connected to the n011nal Ethernet. If the Alto asks you to set the date
and time, the trick is to use text such as in "Jul" rather than a number for the month. If
you get really frustrated, tC or SIIIFT-SWA'f will also get you past this problem.
Starting the Gateway Program
Type the command Gateway followed by carriage return. The program will, read the
parameter file, print out a few messages about boot files, print a few informational messages,
pause for a while, and finally print the message "Gateway of date-time in operation". At
this point the Gateway program is running. However, it takes approximately one minute for
new routing infonnation to be propagated throughout the inter-network, so it may not be
possible for connections to bt: established through the Gateway during the first minute after
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