Thunderport to ethernet slow internet connection

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Thunderport to ethernet slow internet connection

Hello,

I just bought a Thunderbolt to Gigabit Ethernet connection cable for my MBA Mid 2012 and I'm experiencing slow internet connection. I have TWC 50mbs service and routinely test at around 55mbs on Speedtest.net. I just plugged in the Thunderbolt to Gigabit Ethernet cable and now it's down to a trickle at around 1-2mbs down and up. Ping times are good, just the throughput is slow.

Is this normal? Thanks!

MacBook Air, OS X Mountain Lion (10.8.2)

Posted on Nov 17, 2012 7:45 PM

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Answer 1

Best reply

blueeos

Level 1

87 points

Nov 17, 2012 9:03 PM in response to NimravusHSSR

I had a similar issue with wifi with my MBA, only getting 1-2 Mbps down and 700kbps up with Comcast. I went into Preferences, deleted my wifi connection, rebooted and reestablished my home wifi network. Now it pops around 25 Mbps down and 4 Mbps up. Maybe you should try the same thing with your ethernet connection.

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Answer 2

JasonFear

Level 5

4,965 points

Nov 17, 2012 10:29 PM in response to NimravusHSSR

What are you getting via wireless on that same connection? If wireless is just as slow then it's not an adapter problem. If wireless is significant faster that would definitely indicate a potential adapter issue but you need to establish a baseline. Preferrably not a speed test through a website, either. An actual file to serve as your "test subject."

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Answer 3

NimravusHSSR Author

Level 1

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Nov 18, 2012 2:50 PM in response to NimravusHSSR

Thank you both for your quick help! I figured out it was my Network setting, I had to set it to manual and to 1000baseT or something like that with full duplex. Now I am getting full throughput. I think for some reason, the "Automatic" setting wasn't working with my Switch (DLink Gigabit 8 port switch). When I went to manual, it worked.

Your response clicked in my head to check the hardware not focus on the internet speed. Thanks!

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Answer 4

JasonFear

Level 5

4,965 points

Nov 18, 2012 2:52 PM in response to NimravusHSSR

NimravusHSSR wrote:

Your response clicked in my head to check the hardware not focus on the internet speed. Thanks!

My pleasure. Yeah it's easy to get lost in speed tests via website and then expect the results as "end all, be all." Happy to hear you were able to get to the bottom of it, enjoy.

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