Internet Frequently disconnecting in Sophos XG 210 firewall

The internet connection is disconnecting for 10 or 20 seconds. Then he comes back. but the gateway is not down. Chrome or IE does not open the page either. It refreshes after 10 seconds

we are using 2 ISP, using SD-WAN we forced to send traffic via Airtel and TATA, getting same internet disconnect, we raised ticket no of times. still didn't get permanent solutions

Please help me to fix this issue soon.. 

our firewall firmware version SFOS 18.0.4 MR-4 ,

Edited TAGs
[edited by: emmosophos at 7:26 PM (GMT -7) on 8 Apr 2021]
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  • Please post graphs of memory and cpu load around the time of the disconnects. Also what does logviewer system show?


    V18.0.x - e3-1225v5 6gb ram with 4 ports - 20w. 
    3 AP55s and 2 APX120s having a holiday until software update is released.
    If a post solves your question use the 'This helped me' link.
  • hi, CPU & memory all running in normal.  i hope there is no issue in hardware. i think in my network some virus affected system is there. due to that only firewall internet getting down every 10 mins once, kinldy advice how to find that machine.. we are using sophos interceptX antivirus and we have morethan 120 systems, all running fine. i dont know how to find the affected machine