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Forum Discussion
R6400v2 restricting incoming ISP signal
Help. I have an AC1750 (model R6400) Nighthawk router. 11 months old. Recently upgraded my internet service with ISP (Xfinity) from 100mbps to 600 mbps. Sadly this turned into a dissaster. My AC...
A couple things.
1. I'm impressed you're getting 600mbps out of the MB7621. xfinity only rates it up to 400mbps on their tiers.
https://www.motorola.com/us/mb7621/p
2. After the upgrade, did you try factory resetting the R6400? Maybe old settings are causing issues. During the install process, leave qos, access control, traffic monitoring, and parental controls all disabled. The R6400v2 is an base model gigabit router and when those process are enabled, it disables CTF and puts the burden on the cpu to inspect traffic. This will cause slow downs. And I've seen CTF not get re-enabled just by disabling those services and rebooting. You can try disabling them and rebooting but if it doesn't help, then try the factory reset/manual reinstall. (not from backup)
3. also make sure IPv6 is enabled.
4. what website are you testing on? have you tried different test sites/servers?