"Vincent C. Jones" wrote:
>
> If the only change "before" and "after" is the addition of switches, I
> would look for incorrect autodetection of data rate and (more likely)
> half/full duplex. Check that the switch ports are all locked at the
> correct setting for the device(s) on each port. This sounds like some
> switch ports that are incorrectly detecting normal Ethernet connections
> as full duplex, a recipe for poor performance.

Also, note that 100Mb interfaces on the 3000 should be set manually
to match speed/duplex.  You can do this in NMMGR.  They do not do
autodetection correctly at least with Cisco switches (neither does
our 9000).  PC cards tend to auto-sense correctly most of the time,
while server-class cards (our 3000 and 9000, and some Suns) rarely
set themselves correctly.

Jeff Kell <[log in to unmask]>