Dell Connectrix MDS 9396S Connectrix Cisco MDS 9000 NX-OS 8.4-2c Release Notes - Page 15

Deprecated and Changed Features  FCoE Port: FCoE ports can be nondisruptively downgraded without affecting traffic on the ports.  IPS Ports: Traffic on IPS ports on Cisco MDS 9250i and Cisco MDS 24/10-Port SAN Extension Modules is disrupted during an upgrade or downgrade. Nodes that are members of VSANs traversing an FCIP ISL are impacted, and a fabric reconfiguration may occur. iSCSI initiators connected to the IPS ports lose connectivity to iSCSI targets while the upgrade is in progress. Note: The software downgrade information in the below tables applies only to Fibre Channel switching traffic. Downgrading system software disrupts IP and intelligent services traffic. Any hardware that is not supported by the downgrade release will be powered down when the downgrade release starts running. Power off and or remove any unsupported components before downgrading. For more information about supported hardware see the Cisco MDS 9000 Series Compatibility Matrix. If you are downgrading to Cisco MDS NX-OS Release 8.1(x), Release 8.2(x), Release 8.3(x), or Release 8.4(1x) from Release 8.4(2x) and if smart license and VSAN policy for a role are configured, ensure that you disable Smart Licensing or disable VSAN policy for only the role before downgrading or performing a switchover. You can re-enable these features after downgrading or performing the switchover. For more information, see CSCvy19014. FICON Downgrade Path MDS NX-OS Release 8.4(2c) is a FICON qualified release. Below is the downgrade path for FICON certified releases. Table 13 (page 1 of 2)FICON Nondisruptive Downgrade Paths from MDS NX-OS Release 8.4(2c) To Release with FICON Enabled MDS NX-OS Release 8.4(1a) and 8.4(2b) MDS NX-OS Release 8.1(1b) Nondisruptive Downgrade Paths and Ordered Downgrade Steps Downgrade directly from MDS NX-OS 8.4(2c) Step 1.Downgrade directly to MDS NX-OS Release 8.4(1a) or 8.4(2b) MDS NX-OS Release 8.1(1a) Step 2.Downgrade to the target release Step 1.Downgrade directly to MDS NX-OS Release 8.4(1a) or 8.4(2b) Step 2.Downgrade to the target release Dell EMC Connectrix MDS 9000 NX-OS Release Notes 15