Managing Cisco MDS switches Child TopicsUpgrade Cisco MDS switch softwareUpgrade or downgrade the firmware on the Cisco MDS series switches. Downgrade Cisco MDS switch softwareDowngrade Cisco MDS switch software to restore the original version after a failed upgrade. Configure a VSANConfigure a VSAN and assign FC interfaces. Remove a VSANRemove a VSAN and associated FC interfaces. Configure a domain ID and priority for a VSANSetting the domain ID and priority ensures the switch takes a role of a principal switch in that VSAN. The domain ID in the VSAN does not get changed during a fabric merge. Remove a domain ID and priority from a VSANRemove the domain ID and priority to ensure the switch is no longer a principal switch in that VSAN. This enables the domain ID in that VSAN to be changed during a fabric merge. Enable FC interfacesEnable FC interfaces on the Cisco MDS switch. Disable FC interfacesDisable FC interfaces on the Cisco MDS switch. Move licenses between FC interfacesMove licenses between FC interfaces on Cisco MDS switches. Disabling port licensesPort licenses can be disabled and moved to other interfaces. Guidelines and configuration recommendationsBest practices apply when configuring Cisco MDS switches. Zoning guidelinesZoning guidelines apply when using Cisco MDS switches.