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Bad  performance with 10 and 100 base i same network

Posted on 1998-10-08
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Last Modified: 2012-05-05
I have a 10 MBit network with 50 computers. A Novell server and two linuxmashines. It is connected to a wan with a leased line at 512 KBit (via a router). All computer are connected to one segment.

Manufacturer:

Router Cisco
NIC all 3Comm Ethernet 10 and 100 (3c90x)
Hub Superstack II 10/100 Autosensing
Older FMSII 10 base T
Computer Siemens Nixdorf
Kable is cat 5

When I enable 100 MBit on the server the performance is good only between the server and the workstation who have 100 MBit enable. Other devices has approx 1/4 of 10 MBit speed.

I have tested 100 MBit card with Autosenseng, and without, Full duplex and half duplex. Everything works but the speed is not acceptable.

What is wrong?
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Question by:tord_f
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kduquett earned 200 total points
ID: 1126443
I had the same problem.

I connected "each" 10BT hub to a port on the 100MB hub.
The servers were plugged directly into the 100MB hub also.
So each hub and server is plugged directly into the 100 MB
hub.

The 10BT workstations speed improved to the point that my
Novell server avg utilization went up by 15%.

.....KD
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