Brief loss of connectivity for all customers although it should be largely un-noticable
Up to 120 seconds in small bursts across the course of the day
Following some repeated firmware issues on access switches, we are systematically replacing all access switches in every rack in Joule House.
As we run a redundant switching network, we will begin by powering down the B switching network, and replacing cabling and switches. Then powering it back up. Then repeating the same process on the A switching network.
When the switching networks go down and back up (4 times in total), it will cause a spanning tree calculation, which will result in momentary downtime (<30s).