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Slow Workstation Performance - Need some suggestions

By jgreer ·
Hello - I currently have a relatively new network that was installed onto old cat5 cables that I am confident were not installed with interference protection. I have 3 users out of 40 who suffer extreme network slowness. I have reimaged all three computers, verified settings are accurate, revised drivers and installed two new network switches. I have installed a small switch on one machine and it seems to have helped the user some. It seems however, this issue is still not corrected overall. I am at a loss for idea's, anyone have any other than looking at rewiring as an option?

Network Note: 1 SBS 2003 Server R2, 2 HP Unmanaged switches, workstations are Windows XP Pro - Svc 3.

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More info please...

by Bruce Epper In reply to Slow Workstation Performa ...

Are all 3 problem machines in the same area? What common devices are they traversing? Are the cable runs within limits? Are the cables run in areas that could be generating excessive interference? Do you have a reflectometer to check the cables and have you run the tests? What kind of packet loss are you seeing between the affected machines? I.e., if most of the problems are occurring between the SBS machine and a workstation, are you seeing 25% packet loss with ping? More? Less? Can you put up a network monitor to look at these numbers (either a dedicated hardware device or software}?

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Workstation Tune-up Checklist

by oldbaritone In reply to Slow Workstation Performa ...
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Just a Suggestion

by enwilley1 In reply to Slow Workstation Performa ...

I work at a hospital with over 2000 clients. one thing that really slows down a compute on my network is the netcard settings we run at 100 full and in the new area's 1 gig. if the network card on the computer is set to somthing other then what the port on your switch is set to this could really slow down a computer. i have had several that would be extremly slow then i check and sure enough the nic card is set to auto change that to 100 full and everything picks right up. and agian just a thought that is usally the problm on my network.

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Cable run lengths?

by Aaron Mason In reply to Slow Workstation Performa ...

Seems to me that attenuation may be causing issues, and a major cause of this is excessively long cables. Ethernet can only handle cables up to 100 feet (30 metres) before attenuation trashes the signal, and even then, long cable runs can still degrade the signal to noticeable levels.

It might be worth looking into the length of the cable runs. The switch you added to one machine essentially acts as a repeater in this case, so it would be giving the signal a bit of a boost.

I'd be investigating the length of the cable run and look into re-routing rather than rewiring to shorten the cable run. If this isn't an option, then look into installing repeaters or additional switches at regular intervals. There are some tools you can buy that can measure the length of the cable run (some BIOSes have this ability as well) that might prove helpful in your diagnosis.

Hope this helps, and good luck.

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Follow-Up

by jgreer In reply to Cable run lengths?

I will re-review the checklist, the only problem is though all three machines have been completely re-imaged as a troubleshooting measure. They are located in different places in the office, so no similarities. I truly am convinced its a cable length problem since some drops are over 100 feet away and I am confident that whoever installed the cable here didn't care if it was thrown over fluorescent lights or properly insulated. Also, I will manually adjust the nic card settings and see what happens.

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Latest Update - No improvement

by jgreer In reply to Follow-Up

I performed all steps on the checklist. Installed a network switch and no improvement. I also even tried reducing the NIC to 100 full. Any other idea's?

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check the Packetloss

by ajith_haq In reply to Slow Workstation Performa ...

Are you getting a 100% success while pinging with server or other PC from these three mechines while pinging with the "-t" option.

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Yes

by jgreer In reply to check the Packetloss

Perfect response. I am not seeing any packet loss.


C>ping user-xp-08

Pinging user-xp-08.domain.local [192.168.1.134] with 32 bytes of data:

Reply from 192.168.1.134: bytes=32 time<1ms TTL=128
Reply from 192.168.1.134: bytes=32 time<1ms TTL=128
Reply from 192.168.1.134: bytes=32 time<1ms TTL=128
Reply from 192.168.1.134: bytes=32 time<1ms TTL=128

Ping statistics for 192.168.1.134:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C>

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ping continuously

by ajith_haq In reply to Yes

dont assume that there is no packet loss while pinging simply to a pc.try ping with the "-t" option.If no problems is showing up you simply check the DNS & WINS resolution .Improper ip settings may become messy.if that to is ok provide me some more details like,
1.Which anti virus you r using.
2.fire wall.
3.Specs of the three pcs etc.....
Then i think i can work it out.

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Wireless?

by cjeddie2003 In reply to Slow Workstation Performa ...

Would extending the coverage via wireless be acceptable to the 3 users suffering the problem? (no wires necessary )

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