SG135 slow internet connection

Hello Sophos User6847,

Thank you for reaching out to the community, can you please refer a KBA - slow browsing - https://community.sophos.com/sophos-xg-firewall/f/discussions/104325/internet-speed-slow-after-few-hours

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?

In that scenario can you check the interface negotiation [duplex -full/half] ?  

Ok - crazy situation.

Setting is on auto negotiation for all ethernet ports,
cli says - for some unknown reason -  link mode is only at 100 currently at he the "problem" sg135.

At the other SG135 also auto negotiation is on but link mode is 1000.

I guess i found the problem, but i don't understand why he handle out a slower link mode at the other SG135.

Cheers on that !! 
Do you see any drops or errors on that interface ?

No there are no drops or errors ath the WAN interface,
i also set now on 1000baseT/Full but link was down, now i set back on auto neg. but link is still down and not goes up.
But State is Up so its very weird.

I will drive now to the other SG and will disconnect the lan cable from the WAN iface and look whats happen then

from the backend you can also fire the command ifconfig eth2 up 

It was a incompatible LAN cable which a technican from our ISP connected yesterday after some speed upgrades from the modem to the SG.
I connect now a regular LAN cable and the 1000 connection is on, i just have to solve the problem from the same problem at the LAN iface because its also only on 100 currenty.

I will let you know today if the whole speed problem was fixed - thanks in advance for your help and inputs.

It was a incompatible LAN cable which a technican from our ISP connected yesterday after some speed upgrades from the modem to the SG.
I connect now a regular LAN cable and the 1000 connection is on, i just have to solve the problem from the same problem at the LAN iface because its also only on 100 currenty.

I will let you know today if the whole speed problem was fixed - thanks in advance for your help and inputs.