This topic

Was 500Mb/70mb now 100Mb/70

Davidold80 — Fri, 21 Aug 2026 15:11:03 GMT

Today this began. No failure as far as I know.

I am BB only and fully cabled, there is only this one line active.

The drop in download only seems very precise.

What should I do.

Thank you

David

Re: Was 500Mb/70mb now 100Mb/70

iniltous — Fri, 21 Aug 2026 15:21:14 GMT

Check /swap the cables , dropping to 100Mb suggests the cable is only rated cat5 (100Mb) or a fault has disabled the cable in such a way that it’s only capable of 100Mb , what device are you using to measure speed , wired or wireless ? Any powerline devices in the setup ?

Re: Was 500Mb/70mb now 100Mb/70

Davidold80 — Fri, 21 Aug 2026 15:33:46 GMT

All is cabled. Cat 7. No powerline adaptors. 2 measures used to check.

Speedof.me is one. The other is Microsoft Win 11 built in (Ookla)

Just switched to wireless and it is the same.

Just looked at the log and I have had a reboot 2days 10hrs ago and another 3days before that.

David

Re: Was 500Mb/70mb now 100Mb/70

WSH — Fri, 21 Aug 2026 15:42:45 GMT

Another way to tell is by looking at the cable plug. If there are only 4 wires connected then it will only be capable of 100Mb/s.

I'd also try reseating the plugs a few times, as a bit of muck can take out one pin and drop it to 100Mb/s.

Re: Was 500Mb/70mb now 100Mb/70

Davidold80 — Fri, 21 Aug 2026 15:45:19 GMT

Please tell me how my wireless is showing the same

Re: Was 500Mb/70mb now 100Mb/70

shakey1981 — Fri, 21 Aug 2026 15:53:29 GMT

possibly wrong tye of cable take the Ethernet cable directly from the ont an rhen test @WSH

Re: Was 500Mb/70mb now 100Mb/70

shakey1981 — Fri, 21 Aug 2026 15:54:14 GMT

wireless maybe down to interferance also

Re: Was 500Mb/70mb now 100Mb/70

WSH — Fri, 21 Aug 2026 15:58:02 GMT

@Davidold80 Well you didn't say it also affected the Wi-Fi until just now, did you.

@shakey1981 has a good point. Assuming you are on FTTP, as suggested by 500Mb/s, it could be the cable from the ONT to the router. That would also limit the Wi-Fi.

Re: Was 500Mb/70mb now 100Mb/70

iniltous — Fri, 21 Aug 2026 16:14:32 GMT

As at the time if the original reply it wasn’t known what your ‘setup’ entailed, the only Ethernet cable that was known to exist was between the ONT and router, that’s the first one to try swapping out to eliminate it as the problem, you could also look up how to set up a PPPoE session on your PC, linking direct from from your ONT to a PC/laptop (assuming you have a one with Ethernet ) some modern ‘slim’ cases don’t have an Ethernet socket , but you can get adapters, using a different Ethernet cable to the existing one between the ONT and router , then you can also eliminate the router as the potential problem .

Re: Was 500Mb/70mb now 100Mb/70

Davidold80 — Fri, 21 Aug 2026 16:37:36 GMT

OK I don't know what is going on so apologies for what has occurred.

I have a Smart Hub type 2 and have just solved the problem at least for now.

I changed the port in use from P2 to P3 and all is well.

David

Re: Was 500Mb/70mb now 100Mb/70

WSH — Fri, 21 Aug 2026 16:55:29 GMT

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.

Re: Was 500Mb/70mb now 100Mb/70

Davidold80 — Fri, 21 Aug 2026 17:17:42 GMT

WSH

I think that I get it now. In fact it could be anything, sort of.

Perhaps I'll give BT a call

Cheers

David

Re: Was 500Mb/70mb now 100Mb/70

Davidold80 — Sat, 22 Aug 2026 10:27:23 GMT

I've just been through the 'Bot' stuff with BT and a Long Reboot has cleared the fault.

I wonder what it was.

David

Re: Was 500Mb/70mb now 100Mb/70

WSH — Sat, 22 Aug 2026 10:50:54 GMT

It could be anything. It's not that uncommon. As a said, a quick unplug and re-plug usually fixes it.

Re: Was 500Mb/70mb now 100Mb/70

Davidold80 — Sat, 22 Aug 2026 11:09:15 GMT

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

Re: Was 500Mb/70mb now 100Mb/70

WSH — Sat, 22 Aug 2026 11:20:12 GMT

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).