short period of losing connection and reconnect

Hi,

which model XG? What do the cpu and memory graphs show around those times?
ian

I have also been experiencing this issue on an XG115 device running SFOS 18.0.5 MR-5. I also experienced it on MR-4 but never had the issue before that. There doesn't seem to be anything in the logs pointing to an error or service failure or a root cause. It happens usually 10 times a day for no apparent reason... even at night when there is nothing happening on the network.

Hello Wesley,

Thank you for contacting the Sophos Community.

When this issue happens, does it affects all users at the same time?

Try disabling Firewall Acceleration and monitor if the issue persists.

console> set advanced-firewall tcp-selective-acknowledgement off
console> system firewall-acceleration disable

Regards,

Hi Emmanuel,

it affects users but not at the same time.

please have a look on the Pattern updates for IPS. This may cause interupts, mostly on small appliances.

Do the install times match your disconnects reported by the users?

what do you mean by install time?

I did the IPS update but it stilll did not fix the issue

no, I meant, check the date+time of last successful update on the screen - does this match the interruption?

no, it does not.