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XR500 ipv4 vs ipv6 speed differences
I feel bad putting this here without knowing more but I recently got a new config from my ISP for a 900/35mbs line (from 400/35). Direct line tests for around 500 (on speedtest.net) and ISP still thinks there are some remaining issues to get 900 but connectivity is there.
But if I plug in my XR500 my speedtest.net plummets to 80-120mbs and never more. In attempts to figure out what is going on I tried a bunch of speed tests as well as wired/wireless. I found that speedtest that explicitly mention ipv6 give me 500mbs+ but speed tests that don't (such as speedtest.net) give me the severely degraded performance. I even installed to speedtest apps on my pc. One being the desktop version of speedtest.net and one being Microsoft's "Network Test Speed". Same results. Former tests slow. Later tests fast. I'm fairly positive that it relates to ipv4 vs ipv6. Now I think there is a change that the mistake is with the ISP and that it is some weird misconfiguration there, but if it's something with the router config I'd love to resolve it. I have QoS completely disabled for all of this though I found it to make no difference at all if turned on.
Just wanted to follow up saying that I managed to resolve the issue by rebooting both the cable modem and the router in sequence leaving the MAC at the PCs. I strongly suspect that the XR500 router was not at fault for the issue but rather that for some reason the ISP/modem capped ipv4 traffic until the reboot.
I am now running with QoS and ipv6 fully enabled without any issues and get equivalent speed tests over both ipv4 and ipv6.
12 Replies
Hi there - are you on an IPv6 connection then or are you on IPv4? IPv6 can often cause headaches for routers, so I would recommend disabling it in >Settings >Advanced and see if that solves your lower speeds.
Also, are you connecting using PPPoE? If so, I recommend you put PPPoE on your modem instead of the router
With QoS disabled, you should easily be hitting 900mbps without any other changes required. Un
When I turn off ipv6 all my speedtests drop to below 120. I'm attaching a retest with the microsoft network speed test after I disabled ipv6 completely just now. It also shows the previous test with ipv6 enabled. My problem appears to be that all ipv4 performance is degraded and the only way I can even see good bandwidth is with ipv6.
Not using PPPoE.
This is a $300 router and it has troubles with IPv6?
LOL! Can you guys be more transparent what this router CAN do and not what IT CAN'T DO? The list sure seems short for what it can do.
