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.

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?

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.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

You could try the VM Forum.

https://community.virginmedia.com/t5...unityHubForums

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

… so what does your config file say?

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

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

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

That’s the 1Gb profile.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

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

Strange that the name just happens to have 640 in it.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

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.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

That'll be the model number of your Hub. They are all "VMDGxxx"

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

https://share.icloud.com/photos/0gFA...5T8MdrEyFexR6Q

So it’s the external output for both wired and wifi connected devices that seems limited to 645 mbps. Weird.

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?

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.

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.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Yeah, I was on M500 before getting the free VMO2 Volt upgrade to Gig1. Like you I had a constantly speedy 545 mbps.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Have you run in modem mode, and connected directly to the modem, to test ?

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

That's exactly what I would do. Samknows/realspeed will tell you exactly what down speed your connection is achieving via your hub regardless of your third-party devices or ethernet cable quality/grade.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

On non-Apple I'd try different browsers. On one PC - wired - speed on Firefox can be half that on Chrome. On another speed is same on both (using same wire) and at the Chrome level. There seems to be lots of things that can affect speed test readings.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Which is why the Realspeed site is always the thing I'd do before putting the Hub into modem mode

As it uses the SamKnows client in the Hub 4 to run the test to the Hub, it doesn't matter how you trigger it.

The additional speedtest to your device as part of Realspeed could still be dependent on any browser limitations.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Did we actually get speedtest results?

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Says it all. Looks like the problem is with my network and/or devices…

https://www.cableforum.uk/images/local/2021/11/1.jpg

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Thought that would be the case. Are your wired devices directly connected to the shub or are you using your own 3rd party (Apple) router which is connected to the shub?

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I use my own router, the Netgear Nighthawk R7800 (AC2600) with the Hub 4 in Modem Mode.

I’m not sure about directly wired to the Hub 4, but WiFi speeds are identical whether from the hub (in Router mode) or the Netgear.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

This router will struggle to hit 1Gbps WAN to LAN, especially with features such as QoS, any kind of filtering/blocking, parental controls, etc on. Turn everything off, and you'll get a bit more, but if you want 1Gbps you need to change router.

https://www.smallnetbuilder.com/wire...owall=&start=1

https://www.tweaktown.com/reviews/76...iew/index.html

Also, wireless is really going to struggle to hit 1Gbps, even 802.11ax.

If you currently want a router that can route at 1Gbps without spending much money, you can't go wrong with the UDR.

https://dongknows.com/ubiquitis-wi-f...r-udr-is-here/

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I apologise if you have already said this, but what grade of Ethernet cable or patch cables are you using in your network? You need at least CAT5e to support Gb speeds. You might check the capacity of any switches you have in the system too.

You might also check that your device network adaptors are configured to receive 1Gbs. In a PC that would be ensuring that TCP/IP is configured to Full Duplex 1Gbs, rather than automatic. I don't know MACs, so can't comment on them.

I agree with rtho782 regarding QoS. This is only really needed if you are sharing limited bandwidth between a number of devices, such as gaming systems. With 1GBs you need to turn QoS off, or it will peg your speed back to 500Mb or less.

You need to check if your router WAN/LAN throughput is sufficient to manage 1GBs. Smallnet builder stopped reviewing routers a couple of years ago. Maybe yours is listed. If so, its throughput will be listed. https://www.smallnetbuilder.com/tool...2lan_thrupt/44

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Wireless ac will top out at around 640 on 80hz in my experience

The router is good for 940mbit throughput on WAN to LAN. Would use voxels firmware ��

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

940mbits is the max burst speed, realistically I think you are looking more around 765mbits sustained/average

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Yes, my current router is fairly old. Due to the amount of devices, computers, tablets, phones, home automation kit and so on, I have been looking at the following router… Hopefully this might increase the Wi-Fi rates…

NETGEAR Nighthawk Tri-band AX8

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I've managed to get speeds in the 900's pretty consistently on the the samknows speedtest via ethernet. I am running voxels firmware, which is optimised somewhat:

Latency
17.7 ms

Jitter
1.74 ms

Download
917 Mbps

Upload
53.5 Mbps

Wireless though, not a chance! I'm not sure many devices really support wifi 6 either, so not rushed to upgrade router yet.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I got my 2017 MacBook Pro back from being repaired yesterday and this is more what I was expecting and hoping for…

https://www.cableforum.uk/images/local/2021/11/9.png

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Sweet. I got a new Galaxy S21 yesterday and was looking forward to doing a speedtest hoping it would give me max speed but it still won't budge over 500mbits. I probably need a new router.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I'm happy with the speeds on my new phone.

https://www.cableforum.uk/images/local/2021/11/10.png

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

nice, is that AC or AX?

https://www.cableforum.uk/images/local/2021/11/11.png

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

The specs of the phone (Xiaomi Poco F3) it says AC, it's also wifi 6, but I'll need a compatible wifi connection to test that. A hub 5 would be nice.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Must be a limitation on my router then. I'll be getting a new one when i upgrade to 1gbit to handle the increased throughput.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

That will hopefully make a big difference. I'll probably have to wait for the next speed increase before they offer me the latest hub, I've no idea when that might be.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I've just had my connection upgraded to Gig1 and also have the asus r7800 router.

I'm seeing a max of 750Mbit on speedtests though.

Is the only way to prove this to go back to router mode on the hub4 and do the same test?

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Yeah you're right sorry, its a netgear and yes wired.

Kids are home now, so will have to try back in router mode early in the morning :D

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Test wired on https://speedtest.samknows.com/ on your R7800 as another test

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

That one shows 656Mbps download.

I've put the shub back in router mode and run the samknows test. It shows full speed to the shub, so I can only assume that the issue is with the r7800 :(

Time to shop for a new router then I guess.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

good to know thanks. When they get around to making it available in my area I'll do some proper research and see which is the best option to go for. I have found a couple I like but I haven't got £450 for a router atm. I'll be looking at £250 max.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

OK, so new router arrived today and set it up.

Speed tests are all over the place. Start off fast, but then drop off down to low 700's.

So decided to do an actual download test. Seems I am able to pull between 110-115MB/s consistently, which equates to around 900mbps.

Switched back to the r7800 and did the same test, which yielded exactly the same result. 110-115MB/s.

So very confused. Can only assume the speedtests (both ookla and samknows) don't provide a very accurate result and actually the r7800 can provide almost full speed.

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I've maintained the R7800 is very capable of handling the 940Mbps top speed. I've tried it against an AX86u and while I prefer the latter for marginally better Wifi range, speeds and latency - the former was getting the top speeds.

I do have issues with speedtests - it depends on the time, day etc, but I can mostly hit headline speeds.

Edit - Just done a Megabyte to megabit conversion, that comes in at 920Mbit... what exactly were you expecting to get? There is overhead to deal with, you will not see 1000 Mbit unless it's misreporting

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

I'm happy with 920mbit - its just the speedtests were not showing anything near that. But clearly when doing an actual download it does hit that speed using my existing r7800.

So I'll be sending the new router back :D

Re: Gig1 with Hub 4 topping out at 645 Mbps
 

If performance is varying down to 700s, I would consider that a very good service, I know its nice to see flatlined speeds, but it becomes less realistic at these type of speeds, and that's not low enough to affect any interactive services.