The every day things from Thalamus' life.

Thalamus' Blog

21 August, 2016

Netgear R7000 Nighthawk and auto negotiation issues

Filed under: ComputerStuff_en — Thalamus @ 11:50

I have a Netgear R7000 – code named Nighthawk AP in my home. I find that it has a nice range and I’m quite pleased with it. There is one thing though that irritates me. It sometimes doesn’t give me 1Gb link speed on the wire.

So, who is the culprit in this senario ? Not 100% sure, but I believe it might be the routers fault.

On my gaming PC, I have a dual boot of Fedora and Win7. Since it is a gaming PC, I mostly use it for gaming. And this is where the problem is most obvious. This PC has a rather cheap Realtek 1G Nic. I often, from poweroff, don’t get more than 100Mb link to the router. I’ve tried to force the NIC to run 1Gb in the driver – but, that doesn’t help. I can see the link going on/off … 5ish times, before ending on 100Gb. Yes, its the latest and greatest driver from Realtek.

So, now everyone would ask – have you tried another cable ? Yes, I have. The solution I’ve found is. Start Fedora, from here, force the driver to 1Gb. I see some of the same symptoms. But, it seems that Fedora doesn’t fall back to 100Gb as quickly as the Win7 driver does. So, after some up/down attempts, the R7000 “gives up” and accepts the 1Gb link.

From here, if I just reboot the machine, and fire up Win7. The link falls out just briefly as expected when the driver is loaded, but, it now comes up with 1Gb, every time.

Who to blame ? Hmm … it is not the NIC, it is not the cable – it might be crappy Win7 driver, but, I feel it is just as likely the R7000 fault.

I might some day soon reflash this router with DD-WRT, since it doesn’t have to do NAT for me.

https://dd-wrt.com/wiki/index.php/DD-WRT_on_R7000

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