If TPLINK are listening, this is another case where allowing control of the ports in ER605/7206 routers as a virtual switch within the SDN environment might solve many issues :)

It isn't pretty, but you could isolate two ports in one of your controlled switches (ie isolate 7, forward only 8; isolate 8, forward only 7), then hairpin the second WAN through it and tag on the outbound to the modem.

pokhui wrote

Hi,

 

On the ER605, when we setup 2 WAN with the same ISP which requires the same VLAN number on both WANs, it won't allow us to setup.

Can TP-Link fix this?

 

Thanks.

Dear  @pokhui 

I will report your requirement to our D&R department. Thank you for your kindly feedback

Regards