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network switches

I have a dlink dir855 router which i believe runs at 1gb on the lan side. i have connected one of its inputs to a zxyel 1gb 8 port switch as I have more than 4 devices to plug into the router. i have then plugged into the switch a gigabyte 1gb 5 port switch in another room and run a lead from there to a computer with 1gb network card in another room. will having a switch plugged into another switch reduce the network speed? i ask as previously i ran a cable from my main pc to my router and my upload speeds to my nas were much faster, now i am only getting a 9MB upload speed yet all the devices should attach at 1gb speed.



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PeterBaileyUk
Asked:
PeterBaileyUk
3 Solutions
 
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
You sure you meant to post this in the Access zone? I'd suggest you ask the Moderators to rezone this for you.
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PeterBaileyUkAuthor Commented:
my error that one thx for pointing out
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PeterBaileyUkAuthor Commented:
thank you wasnt my finest hour when i first posted!
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SouljaCommented:
Typically you shouldn't see a huge performance difference when connecting several switches, but biggest factor in your case may be the hardware itself more so than the bandwidth. Being that you are now transferring data through several devices, the switches themselves could be the bottlenecks determined by their processing of the traffic.
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Jim Dettman (Microsoft MVP/ EE MVE)PresidentCommented:
<<will having a switch plugged into another switch reduce the network speed? >>

  Yes, but as has been said, should not be that much of a drop off.

  Anytime you go through another box (hub, switch, or router), some additional latency will be added; it takes time to move packets around.

  But you should be seeing more then 9MB.  If you have two pcs, try a test transfer on a known file size from PC to PC and time it.  If that differs by quite a bit then 9MB, then I'd be looking towards the NAS.

  You could also have a bad cable or piece of equipment.  You can run performance monitor to check some of the network counters and see if packets are getting discarded (can't be processed fast enough), received or sent in error (bad equipment), and a clearer picture of the bytes sent/received per second.

JimD.
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danielc25Commented:
Verify that you are not auto-negotiating half duplex. If it is confirmed to be 1000 Full then I would try troubleshooting the switches. Do you notice increased latency when using all of the switches?
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PeterBaileyUkAuthor Commented:
when i used the router in conjunction with the gigabyte switch i was getting much much faster speeds now i have put the 8 port switch in place of the 5 and put he 5 port switch further on the line into the 8 port thats when the troubles began but the cables connecting the two are brand new and ready made.

the 8 port switch is new too. can someone suggest a performance monitor as mentioned in : 35497769
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danielc25Commented:
Check out Ixia qcheck:

http://www.ixchariot.com/products/datasheets/qcheck.html

If you get some time do some pings from one side to the other with and without the 8 port switch.

If you are using Windows use this command ping -n 300 -l 1500

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eeRootCommented:
You should be able to use PTRG or one of the free solarwinds tools for port utilization monitoring

http://www.paessler.com/prtg/

http://www.solarwinds.com/products/solarwinds_free_tools/
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PeterBaileyUkAuthor Commented:
brilliant i will install the tools, I just uploaded a divx file of a complete film at 1.05 gb in size and that went up at 50 mb but still seems a bit slow.
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