We will upgrade our core switches firmware to the latest version. Since our whole network is redundant, we do not expect any downtime. However there might be a small performance impact for about 10 minutes, while the switches will reboot after the firmware upgrade.
UPDATE1: We have started the upgrade of the core switches.
UPDATE2: Maintenance has been completed and all core switches are now back online. There was no impact to the traffic of our services during the maintenance