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Internet outage every xx minutes

Hello

 

i'm new in the company and they have here installed 2 XG firewalls( HA )

 

Every XX minute there is a internet outage for the whole site , and after 30 -60 seconds internet is back , this repeats every time.

 

What i already see and tested 

If i ping google.com - t   before  the outage then it resolve the ip addres and have correct ping's

If i ping google.com -t  when there is a outage , it resolve the ip address but have time outs on the ping , when the internet come's back then i have correct pings

 

Also strange thing : if there is a internet outage on a  TS session , then it is possible that on the local machine there is no outage

It's never the whole site in once , but the most works on a TS-server so all the people who work on this machine have on the same time this problem.

 

The company who delivers the firewall can't also find the problem ( they told they take contact with sophos) and the situation like this is already more then a Year.

 

Someone a  idea where the problem could be ??



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Parents
  • Hi  

    During Internet outage you may check the packet request on firewall and drop on firewall.

    You may check the traffic or packet request via CLI command:

    console > tcpdump 'host X.X.X.X.

    where X.X.X.X is the destination server or machine IP.

    Command for drop packet

    console > drop 'host X.X.X.X

    As the whole site in a once not having this problem, it could be due to packet loss or drop on ISP due to high bandwidth usage.

    In packet request above if XG forwarding packets out and no reply from ISP then further you may verify the ISP usage and why no reply to that packet from upstream cloud etc.

Reply
  • Hi  

    During Internet outage you may check the packet request on firewall and drop on firewall.

    You may check the traffic or packet request via CLI command:

    console > tcpdump 'host X.X.X.X.

    where X.X.X.X is the destination server or machine IP.

    Command for drop packet

    console > drop 'host X.X.X.X

    As the whole site in a once not having this problem, it could be due to packet loss or drop on ISP due to high bandwidth usage.

    In packet request above if XG forwarding packets out and no reply from ISP then further you may verify the ISP usage and why no reply to that packet from upstream cloud etc.

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