@Stariaa but ive purchase a rj11 to rj45 converter i want to try connecting the ISP directly to the TP link router I'm afraid its not as simple as that. I'm assuming you have a DSL connection to your...

@KJK That's something to verify, but I don't have an environment to do that. im afraid I dont have the environment to test any of it, my ISP uses PPPoE!. I'm just working on theories... It is clear...

Do not use port NAT, delete all NAT, and try again Yes, there's no need for any port forwarding on the 7206s, only on the BT SMart Hub s @Stariaa However , I think you may be on a hiding to nothing...

@Stariaa Hi This has been changed Main Site BT Router Lan 192.168.0.1 TPLink Router: 192.168.1.1 Remote Site BT Router 192.168.4.0 TPLink Router: 192.168.3.1 Thanks for confirming. Since your Omada...

@Stariaa The routers are also connected and adopted and configured with the following subnets. Main Branch 192.168.1.0/24 Remote site 192.168.3.0/24 The BT Smart Hub routers will have a default LAN...

@KJK I think we have two problems here :- 1) Your scenario where the ISPs DHCP relay agent returns its own IP as dhcp server in the ack to dhcp req, rather than the 'real' dhcp server (presumably...