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High network ping


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#1 NWProblem

NWProblem

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Posted 06 July 2018 - 09:00 AM

My situation:

1 cat5 coming into office which is connected to router´s WAN port (Down: 90mbps / UP: 50Mbps) (router is TP-link Archer C60)
From that router goes 1 CAT5 cable to 16 port TP-link TL-SF1016D switch.and another to security camera box.
From switch goes 6 CAT5 to 6 workplaces.
Things connected to 6 cat5 are following:

1. Goes straight to PC
2. Goes stratight to PC
3. Goes straight to PC
4. Goes straight to PC
5. Another router which has connected only a phone (it´s not IP-phone but with the smaller connector to router, i don´t really know the name of the port).
6. Another 16 port TP-link TL-SF1016D switch where are connected following devices:
 2 PC´s
 4 network printers (3 Samsung M267x 287x Series and 1 Canon iR2020) – each has it´s own IP address

I haven´t configured anything, IP adresses are dynamic and DHCP server on router is enabled.
Switches aren´t accessible either. PC´s have dynamic IP addresses.

Problem: 

When there is only one or two PC´s working at the same time, then there is 4ms ping max.
When everything is turned on, there is ping starting from 100ms up to 300ms. It goes back to 4ms for about minute and then goes back up, also often occurring timing out. Also i noticed that when I restart the main router with everything ON, then about 2 minutes there is 4ms ping followed by sudden jump back to 160ms where it stays.

I ping google.com.

What i have done:
1. Disabled windows update on all PC´s in Services.
2. Tried to use only one swtich
3. Pin pointing the problem by disconnecting everything and conencting back one at the time
4. Rrestarted everything multiple times (Router/switches/PC´s/printers)
5. Router firmware is up to date (checked with TP-link)

The workload is not that heavy and i have pretty much same layout in my other office with slower up and down connection, and there everything works fine. I´ve checked each PC netwowk usage when everything is on and it´s 0 on every PC.

Could anyone tell me what i´m doing wrong? I don´t have much experience on setting up networks, this is my biggest yet and I´d love to conquer it!

 

 

 



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#2 mightywiz

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Posted 06 July 2018 - 11:42 AM

windows version?

 

windows 7 & 10 could be doing automatic updates at the time your checking things.  open your resource monitor and look to see if one of the computers is slamming the network, also check cpu and ram usage.  it's possible you have a system with some malware issues.






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