Hello, I have gigabit service from my ISP. When plugged in to the wall I at least get 250~500Mbit download speeds but when I try to download the same exact file from the same exact website (Microsoft in this case, downloading a Windows 7 ISO), when I'm wired in through my router using a Cat 5e cable, the download is limited to 100Mbit speed. What's ever weirder is that when I run a speed test from the same computer, I consistently get 850~900 Mbit download speeds. So what gives, why are the ethernet ports on my router only giving me 100Mbit? Also I will mention that Windows is showing this computer to be connected to my router via ethernet at 1Gbps. Yes, I've tried disabling QoS, no difference.

Case - sorry but that is untrue. DumaOS QoS can operate at gigabit speed on the XR500. In fact, that was one of the main test requirements when we first put DumaOS onto the hardware. OP has also said he has disabled QoS anyway to try and find the cause. OP - let us know if you have any update and we will continue to help you here. Thanks.

Check the link speed on windows, is it full duplex 1000mbps? If not change it, does that work? If it doesn't have as an option then your device doesn't support more than 100mbps and device manager is showing correctly.

ReddieEX wrote: hey there again, tested it now with Cat 6 and Cat 7 cables and now it changed to gigabit ethernet. thought that cat 5e is enough for gigabit communication but well, nobody learn out. The point is that some older CAT5 or CAT5E cables have two pairs (four strands) only - this does limit to Fast Ethernet (100 Mbit/s max). CAT5E is sufficient for Gigabit Ethernet, permitting there are four workable pairs (eight strands) inside.

That is really strange. Reading your description it sounds like you’ve changed every variable. Can you try switching ports and cables around? Maybe there’s some random thing causing the issue that has been missed. Definitely doesn’t sound like a software problem, so must be in the setup.

Cat 5e isn't gigabit certified. Cat 6, 6a and 7 are Gigabit certified which means they are designed to hit 1Gbps. Cat 6a and 7 are shielded to prevent interference from other wires and they can hit 10Gbps.Could be a bad Ethernet cable limiting it to 100Mbps because Cat 5e should easily hit 800Mbps.

Xr500 Ethernet limited to 100Mbit

16 Replies

Netduma_Jack
NetDuma Partner
Jun 15, 2018
That is really strange. Reading your description it sounds like you’ve changed every variable. Can you try switching ports and cables around? Maybe there’s some random thing causing the issue that has been missed. Definitely doesn’t sound like a software problem, so must be in the setup.
XRaptor29
Luminary
Jun 15, 2018
Cat 5e isn't gigabit certified. Cat 6, 6a and 7 are Gigabit certified which means they are designed to hit 1Gbps. Cat 6a and 7 are shielded to prevent interference from other wires and they can hit 10Gbps.

Could be a bad Ethernet cable limiting it to 100Mbps because Cat 5e should easily hit 800Mbps.
FURRYe38
Guru - Experienced User
Jun 16, 2018
Cat5E can support up to 1000Mb, however Cat6 would be a much better options.

https://www.diffen.com/difference/Cat5e_vs_Cat6

fbry7177 wrote:

Hello, I have gigabit service from my ISP. When plugged in to the wall I at least get 250~500Mbit download speeds but when I try to download the same exact file from the same exact website (Microsoft in this case, downloading a Windows 7 ISO), when I'm wired in through my router using a Cat 5e cable, the download is limited to 100Mbit speed. What's ever weirder is that when I run a speed test from the same computer, I consistently get 850~900 Mbit download speeds. So what gives, why are the ethernet ports on my router only giving me 100Mbit? Also I will mention that Windows is showing this computer to be connected to my router via ethernet at 1Gbps. Yes, I've tried disabling QoS, no difference.

Definately check cabling for quality.

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Xr500 Ethernet limited to 100Mbit