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Slow speed on APX530 where lan is giving good speed

I am facing internet speed slowness issue from APX 530. We have increased the bandwidth from 500 Mbps to 1Gbps but the problem is same, we are still not getting adequate speed, as mentioned about the APX530 can provide speed upto 1750 Mbps, but if there is no one in the office then also we are getting max 150 - 200 Mbps max speed. Where over LAN we are getting 800-850 Mbps speed and we are using Sophos XG2100 Firewall and CS110 switches.

Please help me to understand the issue.



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[edited by: Erick Jan at 5:06 AM (GMT -8) on 12 Jan 2024]
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  • Hi Tejveer,

    Thank you for reaching out to Sophos Community.

    Have you tried to use any how-to videos, documentation, Sophos Assistant, or KBA to try to check the issue?

    • Does the AP have an updated Firmware
    • Is this newly configured?
    • Have you tried to test with different devices? Is the slowness only on browsing, file transfer,etc
    • Have you tested on different configurations
    • Change the Cable connected
    • Any Signal interference might cause the speed degradation?
    • Can you share with us the configuration on your Access Point(band, frequency, etc)

    Also, kindly check the following KB which might assist you

    Erick Jan
    Community Support Engineer | Sophos Technical Support
    Sophos Support Videos Product Documentation  |  @SophosSupport  | Sign up for SMS Alerts
    If a post solves your question use the 'Verify Answer' link.

  • Thanks Erick,

    • Does the AP have an updated Firmware : Yes its updated
    • Is this newly configured? : Using since Nov 2022
    • Have you tried to test with different devices? Is the slowness only on browsing, file transfer,etc : Everywhere, specially during Video calls
    • Have you tested on different configurations : Yes, even i am in touch with Sophos support team, but they are unable to find the root cause.
    • Change the Cable connected : Yes
    • Any Signal interference might cause the speed degradation? : My office is completely open, there are no partitions, glass walls, cabins etc. Max distance of an AP from users are 15-20 Feet.
    • Can you share with us the configuration on your Access Point(band, frequency, etc). : Please find the image below

    I have 9 APX 530 devices installed in the office, wherever i am it doesn't matter, but these APs are creating trouble for me.

    Network Structure

    Sophos Firewall XG2100 -> Sophos CS110FP Switch -> Sophos APX 530

    I am getting the signals even out of my office, around 50 Meters, but with same speed. Max Speed not i am getting is :

  • Hi Tejveer,

    Thank you for the information. I've also edited the screenshot to remove the serial number.

    Did the issue occur since Nov 2022? If no, were any changes made before the issue occurred?

    Also, were you assisted by a Sales partner upon implementation?

    Would it be possible to share the support case ID?

    Erick Jan
    Community Support Engineer | Sophos Technical Support
    Sophos Support Videos Product Documentation  |  @SophosSupport  | Sign up for SMS Alerts
    If a post solves your question use the 'Verify Answer' link.

  • You need to rule out, that you can get the high speed internet tests directly on the LAN cable where the AP is connected. Best is to use it's IP on your test machine.

    Second, if going to a support case, you need to prove, the test machine with WiFi can handle a higher speed that you see on the APX530 WiFi. Test with a different WiFi Vendor or Home Router.

    Testing further with either 2.4 or 5 GHz disabled.

    What are the client connection settings of the SSID? bridge to VLAN? If yes, do you get high speed connection when connected by cable with that VLAN?

    Also give this test a try: after hours, disconnect 8 of the APX530 from power and test when only one is active. Eventually they are too near to each other and channels heavily overlapping.

  • Hi Erick,

    Current Case Number: 06852908

    we already logged the case regarding the same about 4-5 months ago : Case Number :06182567, but not got any satisfactory solution.

  • Hi LHerzog,

    Thanks for the options, but if i connected my home router, Nighthawk Tri-Band WiFi Router AC3200 (R8000), where i am getting upto 850 Mbps speed on the same network.

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