8

Users are reporting that it's taking a long time to access files on the network, browse intranet sites, etc. What should I check?

7

To check the latency on a network:

Run a continuous ping from the command line:

ping -t [destination IP DNS or hostname]

Do this:

  • From your PC to the users PC
  • Your PC to the file server
  • Your PC to Internet sites
  • etc.

If any of these are slow, then run:

tracert [destination IP DNS or hostname]

to see where the issue is.

To check the bandwidth of a network:

You will need to install bandwidth monitoring software, look at your network switches (if they support monitoring), look at router logs, etc.

http://performit.co.uk/network/troubleshooting.php has some good tips.

| improve this answer | |
  • Which version of ping is this for? What is the -t flag? On stretch, I see -t ttl ping only. Set the IP Time to Live., on MacOS -t timeout Specify a timeout, in seconds, before ping exits regardless of how many packets have been received. Both of them give me an error when run without a value, e.g. ping -t 8.8.8.8. – n8henrie Oct 20 '17 at 1:52
5

Check the duplex settings on the network ports.

If one end of a network link is set to 100baseT full duplex, and the other is set to auto-negotiate, the auto-negotiating end will always go half-duplex.

This wouldn't reveal itself with simple ping tests, but any substantial traffic over the link will be a lot slower than it should be.

| improve this answer | |
3

first tools I would use would be ping and tracert. These will let you know right away if packets are being dropped and where. Routing issues will also bubble up.

I've also seen it where proxies, configured incorrectly, can cause problems on a local network.

| improve this answer | |
0

Incorrectly setup DNS server/settings can also slow things down.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.