> A hardware upgrade of the core Arista 7508 switch will be performed on
> Friday October 26th, starting at 0700 UTC (midnight PDT). The maintenance
> window is 8 hours long. Purpose:
>
> - 2x supervisors will be upgraded
>
> - 6x fabric modules will be upgraded, resulting in a backplane change
> from a 7508E (Arad) to a 7508R (Jericho)
>
> - 2x 12-port 100G line cards will be replaced with 2x 36-port 100G line
> cards
>
> This will be a major fabric disruption. About 155 of the SIX's current
> 325 routers will be offline.
>