Which component is disrupted when the Cisco Integrated Management Controller is upgraded on a Cisco...

Upgrading and activating Cisco IMC firmware interrupts management services provided directly by the controller, including active keyboard-video-mouse sessions and attached virtual media. It does not normally interrupt the production data traffic processed by the server operating system. SAN traffic is likewise not the component specifically disrupted by a CIMC firmware activation. Cisco UCS Manager is an external management platform and is not upgraded or taken down merely because the CIMC firmware of one C-Series server is being updated. Administrators should expect the KVM console connection to terminate and should reconnect after the controller has restarted. Cisco’s firmware-management documentation explicitly states that CIMC activation does not disrupt data traffic but does interrupt KVM sessions and disconnect attached virtual media. Therefore, KVM sessions are the component affected by this operation. Cisco UCS firmware-management guidance