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    Sagemcom F@ST2504n v7 Bottleneck

    This is a discussion on Sagemcom F@ST2504n v7 Bottleneck within the Sky Broadband (Fibre) Help forums, part of the Sky Broadband help and support category; Hi all, After upgrading to Sky Fibre Unlimited Pro, I can't for the life of me understand why Sky are ...

    1. #1
      WildBomber's Avatar
      WildBomber is offline Sky User Member
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      Sagemcom F@ST2504n v7 Bottleneck

      Hi all,

      After upgrading to Sky Fibre Unlimited Pro, I can't for the life of me understand why Sky are still supplying the Sagemcom F@ST2504n v7. From my understanding, this is a single-band 802.11b/g/n router, broadcasting signals on a single frequency (2.4Ghz), supporting WiFi speeds of up to 144Mbps. Though this router may be perfectly adequate over LAN with a single device, I'm seriously going to run into problems when using WiFi with multiple devices. Most of the devices I currently use are 802.11n, apart from my Wii, 3DS and an old desktop PC. I'm no expert in networking, but am I right in thinking that using any of these devices at the same time as my 802.11n devices will automatically drop my WiFi speed to a maximum of 54Mbps (the maximum 'standard' speed of the slowest connected device), thus making my 80Mbps downstream... pointless. I also understand it is impossible to filter the Wireless Network Mode, as whoever designed the firmware made a complete mess of it. What option does this leave someone with Fibre Unlimited Pro to get the most out of their connection over WiFi?

      Thanks in advance


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    3. #2
      Isitme's Avatar
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      Older routers reduced their speed to the speed of the lowest connected client, but modern routers are not subject to this limitation. You will get N speed with N devices and G speed with wireless G devices. The only limitation is down to the security used. The 802.11n standard requires you to use WPA2 authentication with AES encryption or no security at all, in order to get full benefit from 802.11n speeds. If you set other wireless security algorithms, such as WEP or WPA, or TKIP encryption methods, the N devices will be reduced to G speed. So if your older devices don't support WPA2 and AES encryption your speed will come down. If you have the option to choose WPA/WPA2 with AES you should be OK.

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      https://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





    4. #3
      WildBomber's Avatar
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      But does this apply to the 2504n, or does the 2504n act like older routers, reducing it's speed. My current security option is set to WPA/WPA2-PSK (Mixed Mode) with my WPA *encryption set to TKIP+AES. I believe both the Wii and the 3DS support WPA2-PSK (AES) but unsure if the Sky Wireless Connector does (why it doesn't even support 802.11n, I don't know). My Sky Wireless Connector is currently using TKIP encryption, will this reduce the speed of my n devices?

    5. #4
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      Changed my security option to WPA2-PSK (AES) and my Sky Wireless Connector is now using AES encryption. Will it still reduce the speed of my 802.11n devices as it only supports 802.11b and 802.11g?

    6. #5
      Isitme's Avatar
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      You will not see a reduction if you are able to select WPA2-PSK (AES).

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      https://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





    7. #6
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      I now understand the security bottleneck but (theoretically speaking) if I'm actively using my Sky Wireless Connector (802.11g) and actively using my laptop's Belkin N300 wireless USB adapter (802.11n), will my 2504n drop to 54Mbps?

    8. #7
      WildBomber's Avatar
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      When running a 802.11n network, I was told it's best to use a separate router for older 802.11g devices, unless (in an ideal situation where all your 802.11n devices have 5.Ghz support) you have a simultaneous dual band router and connect all your 802.11g devices to the 2.4Ghz band and 802.11n devices to the 5Ghz band.*

      Quote Originally Posted by Isitme View Post
      Older routers reduced their speed to the speed of the lowest connected client, but modern routers are not subject to this limitation. You will get N speed with N devices and G speed with wireless G devices. The only limitation is down to the security used.
      Can anyone confirm whether or not the 2504n drops to the speed of the lowest connected client?

    9. #8
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      Take a look at the videos on the metageek site. The Chanalyzer product videos explains this nicely.

      Essentially yes WiFi g can slow other WiFi n devices down on the same 2.4GHz channels. The kick back is that many WiFi n devices are not WiFi a/b/g/n compatible and will not benefit from a router which works on the 5GHz channels. So unless you are looking to update all your WiFi n devices or are happy with two WiFi access points being around your home (more if you need to cover dead spots) then it becomes impractical to run two WiFi routers next to each other to cover both WiFi n & g on separate channels.

      Sky Fibre Unlimited Pro: Connected at 80,000 kbps / 20,000 kbps
      Previous ADSL2+ Speed 19999 kbps 1153 kbps, Line Attenuation 17.5 db 6.9 db, Noise Margin 7.5 dB 8.7 dB
      Speedtest: 17.15MB/s 0.97Mb/s Ping 31 ms

    10. #9
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      It is impractical, yes. That's why I'm hoping the Sagem 2504n doesn't operate in this way, but can anyone confirm whether it does or not?

    11. #10
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      Re: Sagemcom F@ST2504n v7 Bottleneck

      I discovered something interesting with the v7 2504N the other day.

      I have an Android tablet which has single channel 'N' wifi and it connects to my 300Mbps TP_Link AP at 150 Mbps as expected but it connects to the 2504N at 72 Mbps. Does this imply the router is has 2 channel capability and and could actually support up to 300Mbps?

     

     
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