Internet Issue on Online UPS

[sheryarqazi4]

We have 1x FortiGate Firewall 100E, further connected 2Switches, 2x NVRs and 2xServers, there total power load is 1.5 KVA. These are connected to 10KVA UPS, but when the electricity goes and load shifts on UPS; That time we faces internet disconnection issues until the main power comes back. We are monitoring the the systems continuously however we ddnt founf any system getting off during UPS time.
please Guide What should be the Issue

[marce1000]

 - Some networking component must get impacted somehow , check the logs on the mentioned devices when this happens , or better use a syslog server for continuous logging monitoring. You could also use traceroute to perhaps detect the component which further blocks Internet access.

 M.

[Richard Burts · Accepted solution]

What is the FortiGate physically connected to? Is it possible that this connection to outside is impacted by loss of power?

The next time that this happens I would suggest that you evaluate device by device starting with FortiGate, are interfaces up or down, what is in the routing table, is the device able to ping its upstream neighbor, is the device able to access some address in the provider network, is the device able to access some address in the Internet?

[Richard Burts]

I am glad that our suggestions were helpful. Thank you for marking this question as solved. This will help other participants in the community to identify discussions which have helpful information. This community is an excellent place to ask questions and to learn about networking. I hope to see you continue to be active in the community.