A few weeks back I noticed that one of our GRE (not PPPoE) based circuits to Diyixian had framing errors on the line so I reported it. I was seeing about 1 CRC and Framing error every 3 seconds inbound, which means something is corrupting the data before it reaches us our router.
The PCCW engineer came over and swapped the modem which had been running for 4 years or more. I told him the problem was still there... He said there are no errors... I said with your laptop you will not be able to see Framing error and CRC count errors.
He told me the circuit is fine and that is that, and to call Diyixian. It is the first time that an engineer palms me off with an answer that like.
The fun begins now... PCCW will tell DIyixian it is our router, though I have changed from one wan interface to another. Then I will change the router as I have cold standby, then I will tell Diyixian that I am not paying until the circuit is right etc..
It is not an issue in reality.
The point is that I now realize that these guys can and do tell people what ever they fancy. I see that they leave people with fucked lines as most customers don't have the routers/tools to do the testing or don't know how.