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SG135 slow internet connection

Hi all,

We use two SG135 - FW 9.712-13 with completely identical config (really 100% identical) and identical fibre internet connection 300/50.

At the first SG135 iv'e get the full internet speed but at the second SG135 the downspeed is limited to approx 60mb down (upspeed is ok).

If i connect directly to the ISP modem i get the full downspeed of approx 300mb.

I found here in the community a similar problem with the information that IPS was the problem.

So far so good, but when i turn off the IPS setting i get approx 100mb down instead of approx. 60mb but  the rest 180mb downspeed are still missing.

I also deactivated QOS, ATP, etc. including reboot of the device but doesn't change the situation

Did anyone here have any suggestions what i can try else?



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  • Hello Vivek Jagad,

    I followed the steps from your linked KBA but when i try the speedtest in cli, i very often get the following error:


    Retrieving speedtest.net configuration...
    Cannot retrieve speedtest configuration
    ERROR: HTTP Error 403: Forbidden

    I receive the 403 error at both SG135.

    I write "very often" because after approx 30 attempts the speed test was possible for one time, after sucessfully speedtest i can play around again ver yoften until speed test is possible again.

    However, after a few trys the cli speedtest was done sucessfully and the result was:

    Testing download speed................................................................................
    Download: 93.40 Mbit/s
    Testing upload speed................................................................................................
    Upload: 14.25 Mbit/s

    So download speed is the same as on any client but upload was bader.

    Any ideas?

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