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Jharring0701

Gigabit but its not Gigabit

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Posted · Original PosterOP

So my friend is paying for gigabit internet through cox, they have a technicolor-cgm4141 which claims to be a gigabit Modem/Router however they are only getting 100mbps through ethernet and about 300mbps over wifi on 5 GHz from about 10 feet away. The ethernet cord may only be able to push 100mbps not sure If its a cat5 or not (Most likely, is she bought it from best buy) however i feel like they should at least be getting better wifi speeds though. The Modem/Router was recommended and installed by cox for gigabit so not sure where the problem lies. Any info would help, Thank you!

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What is connected to the Ethernet? A computer? What is it's network adapter like?


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Yep.  Providers will do that.  If you look at the contract it will say “up to”. They’ll give you what they can conveniently give you, but they’ll also take whatever you want to spend.  It’s arguably illegal.

they offered a service they can’t actually provide.
  Have your friend reduce his payment to what he is actually getting and demand the money back from the company he overpaid.

 

It is theoretically possible that he is actually getting gigabit at his header.  I doubt it though.


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Your friend most likely has a 802.11n connection, which maxes around 300megabits when running at 20mhz dual antenna mode. Connection between router and computer is definitely why he/she is getting 100megabits. FYI: You will not be getting gigabit over wifi easily. 

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Posted · Original PosterOP
2 minutes ago, Princess Luna said:

What is connected to the Ethernet? A computer? What is it's network adapter like?

Its a computer with a b450 tomahawk whould have no problem with gigabit (Also Tested on an MSI gl63 9sdk Laptop)

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Posted · Original PosterOP
2 minutes ago, Levent said:

Your friend most likely has a 802.11n connection, which maxes around 300megabits when running at 20mhz dual antenna mode. Connection between router and computer is definitely why he/she is getting 100megabits. FYI: You will not be getting gigabit over wifi easily. 

The wifi is 802.11ax i believe and the 100 mbps is over ethernet its like 350 over wifi

 

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1 minute ago, Jharring0701 said:

Its a computer with a b450 tomahawk whould have no problem with gigabit (Also Tested on an MSI gl63 9sdk Laptop)

Cable might be an issue, you should use Cat 5e or Cat 6 and make sure the cable has no hard bends.

 

To get close to Gigabit over Wi-Fi you'd need at least 802.11ac on both router and the device(s). Also remember that Wi-Fi is a shared medium, the more devices you have (and/or neighbors on the same channel) the slower it'll be.

 


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Posted · Original PosterOP
Just now, Eigenvektor said:

Cable might be an issue, you should use Cat 5e or Cat 6 and make sure the cable has no hard bends.

 

To get close to Gigabit over Wi-Fi you'd need at least 802.11ac on both router and the device(s). Also remember that Wi-Fi is a shared medium, the more devices you have (and/or neighbors on the same channel) the slower it'll be.

 

Yeah that makes sense just havent seen this much of a loss before in speeds over wifi

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Posted · Original PosterOP

UPDATE**

Just figured out that the Ethernet cable is a CAT6 not sure why im ony getting 100mbps because both router and motherboard state that they have 1000mbps speeds

 

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12 minutes ago, Jharring0701 said:

Yeah that makes sense just havent seen this much of a loss before in speeds over wifi

May want to check whether the modem/router actually has a gigabit port. If the computer isn't directly connected (e.g. switch in between) those devices also need to support gigabit.

 

On the computer, right click Network, then Open Network & Internet settings, then click View your network properties. There should be a value reported as Link speed (Receive/Transmit), does it say 1000/1000 (Mbps)?


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I would check the configuration on the PC and see if the interface is seeing gigabit or 100M, Cat6 can do up to 10G so if it is what that cable says it is. Then that can't really be the cable.

 

Looking at the specs of that router those two ports on the back are 10/100/1000 so they should support 1G

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6 minutes ago, Jharring0701 said:

UPDATE**

Just figured out that the Ethernet cable is a CAT6 not sure why im ony getting 100mbps because both router and motherboard state that they have 1000mbps speeds

How are you testing download speed? It's also quite possible that the server you're downloading from doesn't supply more than 100 Mbps to a single client.


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Posted · Original PosterOP
1 minute ago, Eigenvektor said:

How are you testing download speed? It's also quite possible that the server you're downloading from doesn't supply more than 100 Mbps to a single client.

im using speedtest by ookla but the wifi is showing higher then 100 so i dont think its that

 

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Just now, Jharring0701 said:

im using speedtest by ookla but the wifi is showing higher then 100 so i dont think its that

True. Have you also checked the Link Speed reported by Windows?


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Posted · Original PosterOP
12 minutes ago, Eigenvektor said:

May want to check whether the modem/router actually has a gigabit port. If the computer isn't directly connected (e.g. switch in between) those devices also need to support gigabit.

 

On the computer, right click Network, then Open Network & Internet settings, then click View your network properties. There should be a value reported as Link speed (Receive/Transmit), does it say 1000/1000 (Mbps)?

alright it says 100mbps is there any way to make it show up as 1000mbps the motherboard specs says it can be 1000

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12 minutes ago, Jharring0701 said:

alright it says 100mbps is there any way to make it show up as 1000mbps the motherboard specs says it can be 1000

The speed you see is the speed negotiated between the computer's NIC and whatever it is connected to.

 

You could connect the computer to another computer and/or laptop. If that shows 1000 Mbps then the motherboard (and cable) are definitely not the issue. I'd suspect the most likely culprit is the router. What kind of router is it?

 

For example I have a FritzBox here and by default it's LAN ports were switched to some kind of "energy save" mode, which limited them to 100 Mbps instead of 1000 Mbps. Of course its possible the router doesn't support it and needs to be upgraded.

 

~edit: Here's a screenshot of the network settings on my router, maybe yours has something similar.

Spoiler

 

1929041205_Screenshotfrom2019-12-0323-10-54.png.85e8fba644b7031e7fc315e35b12b90a.png

 

 


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31 minutes ago, Jharring0701 said:

Its a computer with a b450 tomahawk whould have no problem with gigabit (Also Tested on an MSI gl63 9sdk Laptop)

Looking at specs.  Tomahawk does have gigabit wired ethernet but no wifi

 

29 minutes ago, Jharring0701 said:

Yeah that makes sense just havent seen this much of a loss before in speeds over wifi

If you’ve got WiFi it’s on a card.  What card?


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@Jharring0701

the laptop has gigabit Ethernet too so it could be used to test the cable.
 

a way to test the actual cox router exists with the laptop as well.  If the cable tests as gigabit, run it to the Cox router and see if it gets gigabit too.

 

Im still suspecting Cox.


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46 minutes ago, Eigenvektor said:

The speed you see is the speed negotiated between the computer's NIC and whatever it is connected to.

 

You could connect the computer to another computer and/or laptop. If that shows 1000 Mbps then the motherboard (and cable) are definitely not the issue. I'd suspect the most likely culprit is the router. What kind of router is it?

 

For example I have a FritzBox here and by default it's LAN ports were switched to some kind of "energy save" mode, which limited them to 100 Mbps instead of 1000 Mbps. Of course its possible the router doesn't support it and needs to be upgraded.

 

~edit: Here's a screenshot of the network settings on my router, maybe yours has something similar.

  Reveal hidden contents

 

1929041205_Screenshotfrom2019-12-0323-10-54.png.85e8fba644b7031e7fc315e35b12b90a.png

 

 

He gives the router model in the OP, here is the model technicolor-cgm4141 and after looking into it, that router does support 1G on the two LAN ports that is has.

 

Could be a setting somewhere on the device that has it set to 100Mb/s like you mentioned.

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Posted · Original PosterOP
2 hours ago, Bombastinator said:

@Jharring0701

the laptop has gigabit Ethernet too so it could be used to test the cable.
 

a way to test the actual cox router exists with the laptop as well.  If the cable tests as gigabit, run it to the Cox router and see if it gets gigabit too.

 

Im still suspecting Cox.

Yeah i think i figured out that the router has like a low power mode or something so it only pushes 100mbps through that port and i cant even get into the router settings because cox made the password something different that no one knows and the owner doesnt want me to do a factory reset on it to get into the settings. 

 

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so You can’t even check if it’s gigabit...  the owner?  This an apartment building?  Who paid for the installation?


Life is like a bowl of chocolates: there are all these little crinkly paper cups everywhere.

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4 hours ago, Bombastinator said:

so You can’t even check if it’s gigabit...  the owner?  This an apartment building?  Who paid for the installation?

https://www.router-reset.com/default-password-ip-list/Technicolor

You could try the default credentials for that router

 

https://www.dslreports.com/forum/r32095046-Gigablast-Technicolor-CGM4141

According to this it's "admin" "password" for cox though


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Providing signal levels from the modem would also be helpful, this could simply be an issue with interference or poor signal line quality.

 

Even if you cannot login sometimes you can view these on a info page.

 

Make sure its getting 32 Channels Locked with QAM256 Modulation.

Powers for each channel should be -8 to +8dBmv 0 being ideal

SNR 33dB and higher on each channel 36 and higher is ideal.

Check for high amounts of Uncorrectables on each channel

 

On the upstream side of things Power should be no higher than 52dBmV with 49 and lower being ideal. If any of these are out of range you have a line quality issue. Readings fluctuate check them with as close to no activity as possible and again while loading the line with a speed test.

 

I would factory reset the device as well. A cable modem configuration comes from the CTMS as far as speed and connection wise when it first boots up.

This should reset user name and password to default as stated in a prior post above.

 

Run though the settings check for any power savings and disable, also for wifi make sure its set to it highest settings N/AC/AD/AX whatever it support with channel width set to its maximum settings connect directly to the modem with the laptop or desktop to configure and run speed test.

 

 


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most download speeds are meassured in gb/s which is gigabyte/second, if they wrote that they sold him gigabit ethernet then it's 8x slower than 1000gb/s

some companies have done this and some people misunderstood the difference between gigabit and byte.

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