Installation guide

22
Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(8c)
OL-27554-07
Downgrading Your Cisco MDS SAN-OS Software Image
NX-OS Release 5.2(x) and Release 5.0(x) Software Downgrade and Upgrade
Matrix for Cisco MDS 9509 and 9506 Switches
See the compatibility information in Table 14 to determine if a downgrade to or upgrade from Release
5.0(x) software is disruptive or nondisruptive on a Cisco MDS 9509 or 9506 switch.
Use Table 15 to determine the nondisruptive downgrade path from Cisco NX-OS Release 5.2(8c). Find
the NX-OS or SAN-OS image that you want to downgrade to in the To SAN-OS Release column of the
table and follow the steps in the order specified to perform the downgrade.
Note The software downgrade information in Table 15 applies only to Fibre Channel switching traffic.
Downgrading system software disrupts IP and intelligent services traffic.
Table 14 NX-OS Release 5.2(x) and Release 5.0(x) Downgrade and Upgrade Matrix
Downgrade Path on a Cisco MDS 9509 or 9506 Switch
Current Release Desired Release Expected Behavior Observed Behavior
5.2(8c) 5.2(5b), 5.2(6a), 5.2(6),
5.2(2d), 5.2(2a), or
5.2(1)
Nondisruptive Nondisruptive
5.2(2d) 5.2(2a) or 5.2(1) Nondisruptive Nondisruptive
5.2(x) 5.0(7) or 5.0(8) Disruptive Disruptive
5.0(7) or 5.0(8) 5.0(1a), 5.0(1b), or
5.0(4)
Disruptive Nondisruptive
The user is expected to
explicitly reload the
switch using the reload
command.
5.0(7) or 5.0(8) 4.2(x) or 4.1(x) Disruptive Disruptive
5.0(4) 5.0(1a) Nondisruptive Nondisruptive
5.0(1a), 5.0(1b), or
5.0(4)
4.2(x) or 4.1(x) Nondisruptive Nondisruptive
Upgrade Path on a Cisco MDS 9509 or 9506 Switch
Current Release Desired Release Expected Behavior Observed Behavior
5.2(1), 5.2(2a), 5.2(2d),
5.2(6), 5.2(6a), 5.2(6b),
5.2(8), 5.2(8a), 5.2(8a)
5.2(8c) Nondisruptive Nondisruptive
5.2(1) or 5.2(2a) 5.2(2d) Nondisruptive Nondisruptive
5.0(7) or 5.0(8) 5.2(x) Nondisruptive
Support for Generation
4 modules is available.
Nondisruptive
Support for Generation
4 modules is available.
5.0(1a), 5.0(1b), or
5.0(4)
5.2(x) Nondisruptive
Support for Generation
4 modules is not
available.
Nondisruptive
Support for Generation
4 modules is not
available.