See the VOSS User Guide for detailed image management procedures that includes information about the following specific upgrade considerations:
IPv6:
Notes for systems using IPv6 static neighbors
Fabric:
Pre-upgrade instructions for IS-IS metric type
Considerations for VLANs or MLTs where the VLAN or MLT name uses all numbers.
Considerations for digital certificates configured prior to VOSS 8.1.
Considerations for Fast PoE and Perpetual PoE features configured prior to VOSS 8.1.5.
If your configuration includes one of the preceding scenarios or features, read the upgrade information in VOSS User Guide before you begin an image upgrade.
The topics in this section provide information on validated upgrade paths, migration considerations, and compatible software versions.