The ports auto-negotiate with the devices they are connected to as to the best speed they can support. A temporary problem with a device may have screwed-up the negotiation and the port dropped to 100Mb/s.
Note, it is also possible that, if the only device "visible" to the port at the time was something with a 100Mb/s network card, (most often a TV box, a separate ATA or a printer), that would also cause the port to think 100Mb/s was appropriate. Unplugging and re-plugging would trigger a reset of the port.
Then again, it could just be faulty. As I said, muck on one pin in the socket may have the effect of dropping it to 100Mb/s.
I think that I get it now. In fact it could be anything, sort of.
Perhaps I'll give BT a call
Cheers
David
I've just been through the 'Bot' stuff with BT and a Long Reboot has cleared the fault.
I wonder what it was.
David
It could be anything. It's not that uncommon. As a said, a quick unplug and re-plug usually fixes it.
I must admit that this was my 1st problem in many years with BT.
How long has the HH2 been out?
Just the thought that the HH2 was not working was incomprehensible !
David
I take it by HH2 you really mean the Smart Hub 2 (SH2). The SH2 was released about ten years ago. Really, it's a really old bit of kit by todays standards. As I said, the problem you described is not that uncommon. I occasionally get it on my Netgear switches.
(The original HH2 must be about 20 years old now. That dates from when we had square wheels).