| From: William Park via talk <talk@gtalug.org> | My current router is Asus RT-N66U. I didn't have problem with stock | firmware. But, after upgrading to the latest firmware this weekend, I'm | experiencing "bufferbloat" problem. When I download a large file (eg. | ISO file), I can't browse or send emails or anything, until the download | is finished or terminated. What does "latest firmware" mean? Which firmware? dd-wrt? Asus' own? I'm assuming that the bandwidth bottleneck is between your modem and your ISP. I guess your wireless LAN might have lower bandwidth than your broadband connection, but that doesn't happen often. I'm also assuming that you are just using a simple transport for the ISO, not bittorrent. I don't remember the details of how bufferbloat works, but it seems to me that the most obvious thing is that the problem is on the sending side, not receiving. That suggests that the buffering problem is on the other side of the wire from you. It's not impossible for your side to moderate the flow from upstream. It could delay ACKs. I don't remember that bufferbloat-avoiding code does that. | What dual-band router has QoS to deal with "buffer bloat" problem? | I think queuing algorithm is called "fq_codel" or something. I don't think the bufferbloat is related to QoS.