I have a fibre to home connection which periodically locks up, sometimes up to three times a day. I have done some diagnostics and discovered there is nothing wrong with the fibre connection(the smart hub itself say ithe fibre is connected) I can ping 22.214.171.124 so the network is working, if I change the computers DNS to 126.96.36.199 (googles global dns server) the internet on that computer starts working . So the problem is with the BT DNS server that responds to my DNS queries. I have phoned BT support several times and it's like talking to the monkeys at the zoo. The best I can get them to say is 'Have you tried turning the smart hub off and on'. This does fix it but it is not a solution. They have even sent me a replacement smarthub which made no difference. I appears there is no way to change the dns server address that the dhcp server on the smarthub. Further calls to BT support seem worthless , they have told me to raise the question here. Appartently BT tell me they can't be expected to give any support on there own network faults.
Any help in what I can do would be welcome. The other suggestion was to pay for BT expert support, more chimps I think. My only option to me is to get BT to agree to cancel the contract .
ISP DNS servers are at times known to be flakey (for a better word). You can either disconnect the hub for about 30 mins to get a new IP address using a different BT server or do the sensible thing and get a third party VDSL router that will allow you to set your own.
The Netgear is compatable, you need to connect to the WAN port for connection.
"Gigabit Ethernet WAN port provides universal compatibility with any Internet service"