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Slow speeds until router ethernet port swap - M350 SuperHub 3.0

I'm intermittently getting slow speeds from my hub when connected by ethernet cable, I'll get a slowdown to ~10 Mbps which can be returned to full speed by just changing the cable to another port on the router. The issue is not with the cable. Has anyone else encountered this?

I've got a Hub 3.0 at software version 9.1.1811.401.

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Message 2 of 14
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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

Hi g808080,

 

Thanks for posting, I'm sorry to hear you're having some intermittent issue with the hub. 

 

Can you confirm if this is on a wired or wireless connection, or both?

 

I can also see it's been some time since the hub was rebooted if you could do that also, and let me know if there's any improvement. 🙂

 

Alex_Rm

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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

Hi Alex,

Sorry for the slow reply. I've tried rebooting the router but with no luck. I only use the network on my PC with a wired connection and haven't tried a WiFi connection when it happens. Do you have any other suggestions?

Thanks,

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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

How are you sure that it isn't the cable ?

Also, do a quick check that all of your Hub's coax cable connections are in nice and "finger" tight - at the Hub and wall box and also at any splitters/attenuators/etc. Disconnect all the connections and reconnect to be sure. Ensure there are no “unterminated cable loose ends. Also check that the internal wiring is ok with no kinking or chaffing, check that all looks good with the outside cabling and wall box.

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John
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My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

I've tried with two cables and I feel like it's unlikely both would be bad. It also comes back up to full speed once the port is changed. Do the routers do some kind of port based throttling?

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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

No they dont

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John
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My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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Message 7 of 14
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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

Is that from knowledge of the router software or just a no because you haven't encountered this?

It's just happened again, here are two Speedtest results before and after switching port from port 1 to port 2.

 Port 1Port 1

Port 2Port 2

 

 

 

 

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Message 8 of 14
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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

likely the link speed is dropping to 10Mb.

It might be a faulty hub is your speed fine on the other ports and stays good?

How long is the Ethernet cable?

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Message 9 of 14
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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

It's a 5m cable (one of these https://www.amazon.co.uk/gp/product/B00VC05TYO)

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Re: Slow speeds until router ethernet port swap - M350 SuperHub 3.0

Next time speed drops check the link speed on your PC.

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