From: Alfred Chin (chinalfr@xxxxxxxxx)
Date: Tue Jul 23 2002 - 00:09:52 GMT-3
If you looking a router to simulate as a frame-relay switch, both router
should work just fine.
I'm using a 2523 to simulate a frame switch. I have 2 port connected using
high speed and 2 port connected using low speed. The only differences is
the setting of clock rate on the interface (4000000 vs 115200).
BTW, 2520 has a ethernet port. 2521 has a token ring port. Since token
ring will be eventually dissappear on the CCIE lab, I think 2520 will be the
best option.
Alfred
----- Original Message -----
From: <Ccieyet2b@aol.com>
To: <ccielab@groupstudy.com>
Sent: Monday, July 22, 2002 1:07 PM
Subject: High Speed serial versus low speed async/sync serial ports
> Hi,
>
> I'm looking to acquire a router for use as a frame relay switch for my lab
at
> home and thinking about getting a Cisco 2520 or Cisco 2521. What's the
> difference between those 2 types of serial ports? Will I need to
configure
> the serial ports differently based on low speed versus high speed? Will
the
> ports require different types of cables or connectors? And, are these
> differences relevant for using the the router as a frame relay switch?
>
> The documentation only says that the low speed serial ports can support up
to
> 115kbps while the high speed serial ports support up to T-1.
>
> I've heard that the cisco 2520 makes for a good frame relay switch but I'm
> always concerned about any "Gotcha's" that inevitably are discovered after
> the fact.
>
>
> Thanks, Jim
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