Release 31.6 introduced new names for the network operating systems running on Universal hardware. ExtremeXOS (EXOS) was renamed to Switch Engine and VSP Operating System Software (VOSS) was renamed to Fabric Engine.
The following platforms support Switch Engine 31.7:
ExtremeSwitching 5320 Series
ExtremeSwitching 5420 Series
ExtremeSwitching 5520 Series
Upgrading the firmware from an older version of ExtremeXOS to Switch Engine 31.7 on the ExtremeSwitching 5420 and 5520 series will change the SNMP SysObjectID value. This change might affect SNMP-based management systems.
For non-Universal Hardware switches, the names of the network operating systems will continue to be VSP Operating System Software (VOSS) and ExtremeXOS (EXOS).