Both Wireless Bridge and Wireless Repeater modes work like any non-WDS bridges / repeaters. The WRT1900AC is simultaneous dual-band and everything lives on the same router LAN. So in bridge mode, you can use one band as backhaul and the other to serve wireless clients without suffering the retransmission penalty.
Excellent, thanks for (re)confirming Tim.
You just raised a question for me (I searched online for wireless bridge examples [did find the Anandtech example below], searched Linksys' WRT-1900AC FAQ and looked at the high level user guide and it contained nothing about this):
So to first recap (before my real question about wireless repeater mode) my understanding of WRT-1900AC's 'wireless bridge' is just like Asus' Media bridge mode (which I have not tried yet - was going to use it in our next home).
In short this mode consists of using a pair of 'simultaneous dual-band' routers, capable of 'wireless bridge' mode, connected wirelessly (in this case over say 5 GHz) that then each supply separate wifi connectivity via the second band, allowing clients to connect (using two separate 2.4 GHz SSID's).
Asus cites the benefit as then being able to connect WIRED devices to the second router (the one in 'media bridge' mode).
http://support.asus.com/FAQ/detail....d=n/a&no=42392BBD-29F7-D0C7-6E04-BA444E44B750
Begin Asus Quote:
Setup the first RT-AC66U as router then configure the second RT-AC66U as 802.11ac Media bridge and you can simply connect PCs, Smart TV, game console, DVR, media player to Media bridge via Ethernet cable.
End Asus quote.
Here is an example from Anandtech that is more clear as to the other big benefit of media bridge mode (
http://forums.anandtech.com/showthread.php?t=2300298):
Begin Anandtech Quote:
The bridge upstairs (meaning the router set into bridge mode of course) ties up the 5GHz channel to exclusively communicate with the router downstairs. It also at the same time has the 2.4GHz channel open, which runs wireless and can be connected to. The bridge also has a computer connected via ethernet cable and a printer connected via USB.
End Anandtech quote.
By contrast, my understanding of the router's 'wireless repeater' mode (I could be way off here having never used it either) is where you use the second router as a wireless access point with the same (single) SSID and thus
would suffer the
afore-mentioned retransmission penalty (you're retransmitting a
single signal ...
It is just a way of using the second router, configured as wireless repeater, as a range extender (in case you have extra hardware lying around).
Hopefully I answered my own question, but feel free to correct my understanding.
Long story short, wireless bridge mode is much better for my purposes (no retransmission penalty) and why I originally asked about it being available on the WRT-1900AC to extend wifi in a bigger home.