From: Brian Dennis (brian@xxxxxx)
Date: Tue Jul 23 2002 - 01:31:35 GMT-3
Jim,
You can treat the low speed serials just like the high speed serials as
far as frame-relay is concerned. Just remember the speed limitation. One
problem people do run into is they have the DCE side hooked to a router
with a high speed serial interface and the DTE side hooked to a router
with a low speed serial interface but have the clock rate set above
115200 which is the highest clock rate a low speed can handle.
You might also look into getting a used 4000 series and putting a couple
NP-4T modules in them. They make great frame switches and are all high
speed serials.
Brian Dennis, CCIE #2210 (R&S/ ISP Dial)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ccieyet2b@aol.com
Sent: Monday, July 22, 2002 10:08 AM
To: ccielab@groupstudy.com
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
This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:36:39 GMT-3