What is the distance between the 5210 and 7210? It is a bad idea to use directional AP to repeat wireless network and you probably won't get good results.

But you do need to do this, here is the settings.

1. Set up 7210 as AP
2. Setup 5210 as repeater. Do not try to use a WA5210G to bridge a WA7210N because 7210 and 5210 use different mechanism, see this FAQ http://www.tp-link.com/en/faq-719.html


Note again: since they are both directional APs, they are not good at repeating signal......