[comp.dcom.sys.cisco] X.25 to DECNET/LAT

bj@ohsu470.ohsu.edu (Bill Jackson) (05/11/91)

Bear with me if this is a dumb question to the old hands, I am relatively new
to both the key areas here.

Can people tell me if it is possible to just plug X.25 feed(s) into one hole on
a magic cisco box and get a DECNET/LAT feed out of an Ethernet hole?

This may seem naiive - sorry, I just can't work out if the cicso unit is so
masterfully intelligent it can put together all the packets in say, an X.25
conversation to an asysnchronous device and transform into a conversation on a
DECNET port that looks like a virtual terminal LAT connection.

In case anybody hadn't guessed, that is what I am wondering if I can do.  I
need to take terminal type conversations from an X.25 environment and make it
look to a DEC Cluster of MicroVaxen like these were terminals coming at them
from say a DECServer Terminal Server.

Obviously I would need an X.25 card.  What else?  An Ethernet port to a DECNET
network.  OK, anything else besides brains? :-)

Thanks, mail is probably more appropriate for responses - anyone wanting a
possible summary should ask by mail.

-- 
William Jackson                     Manager, Network Services, Gaines Hall #113
Oregon Health Sciences University (OHSU), 840 SW Gaines Road, Portland,OR 97201
(503) 494 4535          Internet: bj@ohsu.edu     AT&T Mail: attmail!ohsu3b2!bj

eden@fallout.uucp (Robert Eden) (05/14/91)

> Can people tell me if it is possible to just plug X.25 feed(s) into one hole on
> a magic cisco box and get a DECNET/LAT feed out of an Ethernet hole?

I think it is appropriate here and others may be interested.

CISCO sells a PROTOCOL TRANSLATOR (CPT) which acts like a virutal terminal
server supporting LAT,TCP/IP,X.25 and probably more.  It can act as a 
terminal server (connect to the box's address) as well a provide translation
between all the protocols.  DECNET (CTERM protocol) is not supported,
but LAT is. 

<<THIS BOX WORKS GREAT>>  We're using it to access TCP/IP and LAT hosts from
X.25, IP hosts from LAT, LAT hosts from IP... works like a champ.  Sure 
beats taking a terminal server and a PAD and tying them togeather!

Getting it to work with shared LAT printers took a little work since
and officially it isn't supported.  If anyone wants info on how to do this
let me know.  (I think I posted something about that earlier)

-- 
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Robert Eden    817-897-0491                             EDEN@fallout.uucp
Commanche Peak Steam Electric Station                    Glen Rose, TX
               ^^^^^^^^^^^^^^^^^^^^^ politicese for a nuke plant
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