Question by toolongdays: Can a broken network switch cause intermittent internet access across an entire network?
I just replaced a router on our small business network and all communications within the network are ok. Though when we try to access a webpage the speeds are very inconsistent. There are even times when we get error messages and can’t get anything to come up. I’ve checked with our ISP and we aren’t having any issues from their end. So the only other thing I can think of is our switch. Maybe it’s screwing up IPs or something. Have any suggestions?
Best answer:
Answer by David C
if you only have one switch, that is very possible. i would reconf the switch from scratch. there are network analyzers on the internet. get one and baseline it.
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isolate one machine to the modem directly to test out if it’s in any way the isp or the modem itself, once you verify it isn’t the isp nor modem, connect the switch with one machine, confirm it isn’t the switch by adding a second machine and testing out the connection, speeds, whether you can view sites, etc. it could possibly be the switch, a faulty switch can cause a lot of problems.
Connect Modem [wired] to Router [wired] to PCs.
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Set router POWER OFF.
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Reset modem: With a straightened paperclip, press RESET button momentarily.
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Wait 60 secs.
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Set router POWER ON.
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Reset router: With a straightened paperclip, press RESET button momentarily.
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Wait 60 secs.
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PC Command Line:
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Click [Start] – Click [Run...] – enter: cmd, Click [OK]
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At the prompt (c:…..>) enter: ipconfig /release, press [ENTER]
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At the prompt (c:…..>) enter: ipconfig /renew, press [ENTER]
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TEST: Open Web Browser: Connect to Internet.
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If SUCCESS: Repeat Steps after PC Command Line on other PCs.
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If NO SUCCESS:
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At the prompt (c:…..>) enter: ipconfig /all, press [ENTER]
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Ensure DHCP Enabled == YES
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If IP Address == 0.0.0.0 OR 169.254.0.0 to 169.254.255.255, perform ALL steps again.
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