Re: Not Me But.......
"It eventually dawned on me that the installer had put the WAN cable in a LAN port and vice-versa. It felt so stupid for not seeing it myself and apologised profusely."
To be fair to yourself, just remember that when you are dealing with a "professional", it's not your job to assume they made a mistake and fix it for them. I'm sure we all have colleagues who have been to a job, diagnosed a fault, ordered parts and then when the part comes in, you are the one to go out for scheduling reasons and when you get there, assume the original diagnosis was correct right up to the point when you realise they screwed up. You don't go in on a follow-up expecting to have to start diagnosing from first principles because that was supposedly done by the guy(ess) who went in first.
Biting the hand that feeds IT
