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New install problem

JohnLondon

Member
Hello everyone. I had a new CF broadband installed last week. The engineer installer was given instructions to install 150 Mb instead of my 1 Gb contract. After installation he showed me the his instructions and the speed on wifi test to be about 120Mb. I told me him that my contract was for 1Gb speed. He apologised as he was only the installer and asked me to contact customer service to upgrade my speed and get a new router. The installed router is SPNMX55 and he said I should be given SPNMX42.
I have checked the speed on Linksys router App to be about 850 Mb and not 920 Mb as promised.
I have contacted the customer service and technical support but no one has responded. My wifi speed in the evening is 100Mb download and 110 Mb upload, and during the day is about 560 download and 700 upload. Yes upload is always higher than download. Still waiting for technical support to contact me. I have several times switched off the modem and router and also rest the router but no improvement.
Please can anyone advise. Thank you.
 
Hi, I think you have confused wifi speeds with wired speeds. The Community Fibre plans are sold by max wired speed and clearly specify "expected wifi speeds" (see screen shot below for your benefit). Wifi speeds are highly variable depending on your environment, number of devices, distance, etc. There is not much difference between the SPNMX55 (known as MX5500) and the SPNMX42 (known as MX4200) routers. Both can handle 1Gb wired but the SPNMX42 will give you a bit better wifi speeds since the MX5500 is only dual band where as the MX4200 is triband and the MX4200 has a faster 1.4ghz quad core processor and the MX5500 only has a dual-core 1ghz processor. So based on your post you have been provisioned a 1Gb service but given a slightly weaker wifi router that can still achieve 560/700 which is probably close to the top of what you can expect for Wifi 6.

If you want to test your internet speed properly you need to be wired to the router and use a good speed tester like speedtest.net. If you machine and network cards are good you should get 940/940 pretty much all day.

OVoRe7xT_o.png
 
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See my speedtest above. Note the awesome ping time of 1ms which you should be able to get since you say you live in London. And the symetric speed doesn't hurt either.
 
PS: make sure you switch off any other wifi routers in your house, bandwidth is limited so any other routers could be taking away bandwitdh from your new router.
 
Hi, I think you have confused wifi speeds with the wired speeds. The CF plans are sold by max wired speed and clearly specify "expected" wifi speeds (see screen shot below for your benefit). Wifi speeds are highly variable depending on your environment, number of devices, distance, etc. There is not much difference between the SPNMX55 (known as MX5500) and the SPNMX42 (known as MX4200) routers. Both can handle 1Gb wired but the SPNMX42 will give you a bit better wifi speeds since the MX5500 is only dual band where as the MX4200 is triband and the MX4200 has a faster 1.4ghz quad core processor and the MX5500 only has a dual-core 1ghz processor. So based on your post you have been provisioned a 1Gb service but given a slightly weaker wifi router that can still achieve 560/700 which is probably close to the top of what you can expect for Wifi 6.

If you want to test your interfnet speed properly you need to be wired to the router and use a good speed tester like speedtest.net. If you machine and network cards are good you should get 940/940 pretty much all day.

OVoRe7xT_o.png
Thank you GreenLantern22 for your reply.
I have checked the speed with a wired connection on speedtest and upload is 897 and download is 900. Checked on 3 different ISP servers. It is nowhere near 920.
Only my computer is connected to Community Fibre and wifi speed is 550 upload and 620 download. But during the day at times the wifi speed is around 100 with the computer only about a foot away. So I do not understand why the speed fluctuates so much during the day at different times although the speed on the router app is about 850 and only one device is connected in the same room.
PS: make sure you switch off any other wifi routers in your house, bandwidth is limited so any other routers could be taking away bandwitdh from your new router.
Thank you GreenLantern22 for your reply.
I have checked the speed with a wired connection on speedtest and download is 900 and upload is 880. Ping time 3 ms. Checked on 3 different ISP servers. It is nowhere near 920.
Only my computer is connected to Community Fibre and wifi speed is 550 upload and 620 download. But during the day at times the wifi speed is around 100 with the computer only about a foot away. So I do not understand why the speed fluctuates so much during the day at different times although the speed on the router app is about 850 and only one device is connected in the same room.
Thank you for your help, I will retest again tomorrow and update.
 
that bloody 1ms... I get 2.3ms.. since the CGNET problem Im 0.30ms to 0.50ms all day. I know its not a lot but latency is more unstable than before...
 
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One observation, as far as I’m aware, Community Fibre have two possible boxes that connect to the incoming fibre. One is capable of 1Gb/s the other of faster speeds (currently sold as 3Gb/s).

Any speed below 1Gb/s is done by provisioning “off site” and I don’t think the installers can control the service speed, they just demonstrate that it does what they expect after installation to the customer.

It is possible to achieve nearly 1Gb/s on a wired connection (there are intrinsic limitations on gigabit Ethernet so you don’t quite get the 1Gb/s) but the vagaries of wifi mean it shouldn’t be used to prove connection speed.
 
I have checked the speed with a wired connection on speedtest and upload is 897 and download is 900. Checked on 3 different ISP servers. It is nowhere near 920.
900 is nowhere near 920?! 20mb is a 2.22% difference and is perfectly acceptable specially when the reason you can't achieve 940 is because you don't have good hardware! Yes, I can guarantee you that if you connect a good PC or Mac using a good network adapter you will get your 920 and more up to 940. But will it be worth it?
Only my computer is connected to Community Fibre and wifi speed is 550 upload and 620 download. But during the day at times the wifi speed is around 100 with the computer only about a foot away. So I do not understand why the speed fluctuates so much during the day at different times although the speed on the router app is about 850 and only one device is connected in the same room.
But you live in London right? Open your phone and see how many wifi networks you can connect on your phone. Do you think you see all those wifi networks just by luck? No, all those wifi signals are entering your house and are competing for bandwidth. And guess what happens at night? All the people come back home and start using their wifi devices, streaming boxes etc. If you want to have stable internet speeds and achieve max speeds you need to need wire your computer. There is no other way.
 
One observation, as far as I’m aware, Community Fibre have two possible boxes that connect to the incoming fibre. One is capable of 1Gb/s the other of faster speeds (currently sold as 3Gb/s).

Any speed below 1Gb/s is done by provisioning “off site” and I don’t think the installers can control the service speed, they just demonstrate that it does what they expect after installation to the customer.

It is possible to achieve nearly 1Gb/s on a wired connection (there are intrinsic limitations on gigabit Ethernet so you don’t quite get the 1Gb/s) but the vagaries of wifi mean it shouldn’t be used to prove connection speed.
Thank you for the information.
 
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I am behind CGNAT and get 3ms unloaded and 10-30 when in full use.
if you can run pfsense or openwrt you can search about bufferbloat and limiters. check fq_codel

Im 2.3ms idle and 1.3ms under load.
 
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