the environment is hostel. so i have max 400 concurrent users.
Are they all at the same time online I suggest you also to take a bigger one
or you have the time to wait until all
cores are smooth working on ROS
it would be the router for you I think, but the CCR1036 would be a better choice for you
1)Load balancing with 4 X 20Mbps(Download/upload)-dynamic ip address from ISP
Pretty sure it will.
Yes it will if you setting up a netfilter rule first and then a second one that tells
all other rules using the netfilter rule first, you also have SPI in the game!
If massively QoS rules will be used the entire router performance
can be really narrowed down, but this is also pending on the multi core
usage that is not really running now, as I see it.
4)Hotspot authentication with limited time (all wireless access)
6)Equal bandwidth base on active users.
No problem I think.