This is because you don't have the ports on the Cisco etherswitch 
configured correctly.

If you turn off trunk and channel arbitration on the Cisco etherswitch 
(ie: set port host) Sun Microsystems servers and workstations connect 
without problem.

I've proven this on nearly 200 Ultra-1, 2, 5, 10, 30, 60 and 450's.  All 
with HME interfaces.

Cisco has known about this for year.

  http://www.cisco.com/warp/public/473/12.html

Paul Keating wrote:
> That's cuz the old Sun HME stuff wouldn't autoneg worth a crap.
>
> ;o)
>
> That's the only stuff in my env that needs to be hardcoded.
>
> Paul
>
>   
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