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RE: Token Ring posted 06/26/2001
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I personally have not, but the LEDs look like they're just standard
run-of-the-mill 1K-pullups (the 1K resistance is built into the LED). I
believe they're there just to give a visual indication of
ring-insertion, so you'll probably be able to get away without them. For
a quick test, try putting just the 22 nF capacitors across the pins
shown in the diagram and see if the router will insert into the "ring."
In any event, both parts can typically be had for pennies apiece.

Mas

-----Original Message-----
From: afiddler [mailto:afiddler@xxxxxxxxx]
Sent: Monday, June 25, 2001 5:03 PM
To: Mas Kato; 'Brent D. Stewart, CCSI'; ccielab@xxxxxxxxxxxxxx
Subject: Re: Token Ring


Has anyone made this cable?  I am wondering if there is anything more
specific to know about the type of LED's that are indicated in the
schematic.  Thanks.
----- Original Message -----
From: "Mas Kato" <tealp729@xxxxxxxx>
To: "'Brent D. Stewart, CCSI'" <brent.stewart@xxxxxxxxxxxxxxxxxxx>;
<ccielab@xxxxxxxxxxxxxx>
Sent: Thursday, June 21, 2001 10:59 PM
Subject: RE: Token Ring


> IBM 8228 MsAUs can be had for < $25, street. You'll also need a couple
> of DB9-to-"hermaphroditic" station cables (~$12 street but a P-I-T-A
to
> work with), or pairs of DB9-to-10Base-T and
"hermaphroditic"-to-10Base-T
> media filters (~$30/ea) or converters (~$20/ea) and a couple of Cat-5
> patch cables. Simple media converters would probably suffice for a
small
> lab setup. www.pacificcable.com
>
> Be aware that there are four common but different ways the
> DB9/"hermaphroditic" connector is mapped to the RJ45 connector.
> Obviously, you'll want to get matching sets--or play it safe and get
the
> 10Base-T-mapped ones if you go that route.
>
> If you're handy with a soldering iron and familiar with your local
Fry's
> or Radio Shack, the appendix of this PDF document has a schematic of a
> "token ring simulator:"
>
> http://www.lantronix.com/support/docs/pdf/cobox-ntp.pdf
>
> Mas
>
> -----Original Message-----
> From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx]On Behalf Of
> Brent D. Stewart, CCSI
> Sent: Thursday, June 21, 2001 7:09 PM
> To: ccielab@xxxxxxxxxxxxxx
> Subject: Token Ring
>
>
> I have a 2502 and an AGS+ with 4 TR ports.  I'd like to use the AGS as
a
> TR
> bridge, which I assume it was designed to do.  Both devices have a
9-pin
> female "D" shell interface.
>
> Will it work back to back?  Where do I buy or how do I build the
cable?
> Thanks for your help everyone.
>
>
> Regards,
>
> Brent D. Stewart, CCSI
> Global Knowledge
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