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Gig1 with Hub 4 topping out at 645 Mbps
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Old 04-11-2021, 16:49   #1
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Gig1 with Hub 4 topping out at 645 Mbps

Hi guys,

I recently received the home for to go with my upgrade to the Gig1 service. Everything is working fine, however it does not matter what device I use or what speed test, they all top out at 644/645 Mbps. This makes me think either I am receiving the M600 config file or there’s a fault. If the numbers were more random I would probably say it was line quality but this is not the case.

Would anyone have any ideas on a fix or is it straight to faults?

Many thanks,

Andy.
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Old 04-11-2021, 17:22   #2
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Re: Gig1 with Hub 4 topping out at 645 Mbps

Depends how you are connecting. What devices are you using to test. Wired or wireless?
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Old 04-11-2021, 17:46   #3
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Re: Gig1 with Hub 4 topping out at 645 Mbps

I’ve run tests using Apple iMac and MacBook Pro, both wired. Also, the MacBook Pro, iPhone 12 Pro and Apple TV 4K on wireless. Everything gives pretty much exactly the same result.
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Old 04-11-2021, 18:04   #4
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Re: Gig1 with Hub 4 topping out at 645 Mbps

You could try the VM Forum.

https://community.virginmedia.com/t5...unityHubForums
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Old 04-11-2021, 18:27   #5
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Re: Gig1 with Hub 4 topping out at 645 Mbps

… so what does your config file say?
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Old 04-11-2021, 19:09   #6
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Re: Gig1 with Hub 4 topping out at 645 Mbps

Make an account with Samknows.one

the Hub4 has samknows built in it will give you speeds to the hub. do it for a few days and if its still low, its a helpdesk call with the information
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Old 04-11-2021, 19:13   #7
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Re: Gig1 with Hub 4 topping out at 645 Mbps

The file is “ cmreg-vmdg640-bbt076-b.cm”. If the 640 is the speed then it matches my findings.

---------- Post added at 18:13 ---------- Previous post was at 18:09 ----------

General Configuration
Network access
true
Maximum Number of CPEs
1
Baseline Privacy
true
DOCSIS Mode
3.1
Config file
cmreg-vmdg640-bbt076-b.cm


Primary Downstream Service Flow
SFID
30308
Max Traffic Rate
1230000450
Max Traffic Burst
42600
Min Traffic Rate
0


Primary Upstream Service Flow
SFID
30307
Max Traffic Rate
55000270
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
42600
Scheduling Type
bestEffort
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Old 04-11-2021, 19:17   #8
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Re: Gig1 with Hub 4 topping out at 645 Mbps

That’s the 1Gb profile.
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Old 04-11-2021, 19:32   #9
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Re: Gig1 with Hub 4 topping out at 645 Mbps

Yep, this looks like (just over) 1 Gb.

Quote:
Max Traffic Rate
1230000450
Strange that the name just happens to have 640 in it.
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Old 04-11-2021, 19:32   #10
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Re: Gig1 with Hub 4 topping out at 645 Mbps

Quote:
Originally Posted by JMcB View Post
Make an account with Samknows.one

the Hub4 has samknows built in it will give you speeds to the hub. do it for a few days and if its still low, its a helpdesk call with the information
If you're in router mode you just need go to www.samknows.com/realspeed from a connected device and see what that says. Don't need the account creation.
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Old 04-11-2021, 20:22   #11
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Re: Gig1 with Hub 4 topping out at 645 Mbps

Quote:
Originally Posted by Andy C View Post
The file is “ cmreg-vmdg640-bbt076-b.cm”. If the 640 is the speed then it matches my findings.
That'll be the model number of your Hub. They are all "VMDGxxx"
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Old 04-11-2021, 21:05   #12
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Re: Gig1 with Hub 4 topping out at 645 Mbps



So it’s the external output for both wired and wifi connected devices that seems limited to 645 mbps. Weird.
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Old 04-11-2021, 21:12   #13
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Re: Gig1 with Hub 4 topping out at 645 Mbps

Have you got anything non-Apple you can try like an android phone or a windows pc?
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Old 05-11-2021, 00:02   #14
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Re: Gig1 with Hub 4 topping out at 645 Mbps

I have a Huawei P30 which gives pretty much the same result. I'm guessing it's more a limitation of Wi-Fi 5. I get the same when in modem mode using my own router. I guess it's time to upgrade to Wi-Fi 6.
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Old 05-11-2021, 00:13   #15
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Re: Gig1 with Hub 4 topping out at 645 Mbps

I dont think so and even if it was you should defo get full speed on a wired test in modem mode. I have no probs pulling 578mbits on my 500mbit connection.
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