Please be advised that we will be performing a supervisor replacement on the cphb-11 switch. 

During this maintenance window, network services will be temporarily disrupted. The expected downtime is approximately 30 minutes while the cutover is in progress. 

We recommend saving your work and logging off any critical systems prior to the start of the maintenance period. Services will be restored as soon as the cutover is successfully completed. 

We appreciate your patience and understanding.