Users are reporting that it's taking a long time to access files on the network, browse intranet sites, etc. What should I check?
To check the latency on a network:
Run a continuous ping from the command line:
ping -t [destination IP DNS or hostname]
- From your PC to the users PC
- Your PC to the file server
- Your PC to Internet sites
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.
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.