Disclaimer: I am a developer, not a system admin, please be gentle.
Where I work we are having a lot of intermittent network problems. Sometimes the DNS will fail, but access to servers can be done via IP, sometimes access via IP fails. So far as we can tell nothing has been changed on the servers, firewalls, managed switches etc. Also, frustratingly the faults don't cause issues with all users all of the time, but so far as we can tell, all the users have had problems at some point.
- The servers are not reporting any faults.
- The physical network seems fine (it's a small site).
- The firewalls aren't reporting anything out of the ordinary.
- The managed switches have passwords that are only stored in the sys admin's head (an issue we know!)
Our in house sysadmin is unavailable at the moment, so it's left to the developers to try and figure something out.
So, given that I have almost no clue, where do I start?
I've tried the tracrt/ping combo and it looks like it's an internal issue. The external stuff seems to be fairly consistent, but the internal bits are proving to be flaky.