Extending WiFi : DD-WRT Repeater Bridge

Base              TP-Link TL-WDR3600 v1 (link to firmware)

Extender       Cisco Linksys E4200 (link to firmware)

DD WRT version  DD-WRT v3.0-r44340 std (09/10/20)

References: https://wiki.dd-wrt.com/wiki/index.php/Repeater_Bridge

I had an earlier version working for a while and when I changed passphrase, it all fell apart. So I redid it. 

The main trouble on following the wiki instructions was that wireless and wired clients would connect to the extender, but not get an IP address. Client Brige config worked fine. So back to the repeater bridge. I added an AP to the extender on the second wifi band and it works fine now. I realize this is not recommended by the wiki. 

So use at your own caution. I'd still suggest following the wiki instructions above. If all else fails, try adding an AP .