Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(2) (OL-25090-02 F0, January 2012)

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Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.2(2)
OL-25090-02
Downgrading Your Cisco MDS SAN-OS Software Image
FICON Downgrade Paths
Table 15 lists the downgrade paths for FICON releases. Find the image release number that you want to
downgrade to in the To Release with FICON Enabled column of the table and follow the recommended
downgrade path.
Table 14 Nondisruptive Downgrade Path from NX-OS Release 5.2(2)
To NX-OS or SAN-OS
Release Nondisruptive Downgrade Path and Ordered Downgrade Steps
NX-OS:
Release 5.2(1) Downgrade directly form NX-OS Release 5.2(2)
All 5.0(x) releases Downgrade directly from NX-OS Release 5.2(2)
1, 2
1. If you install a Generation 4 module in an MDS 9509 or MDS 9506 switch and perform a full switch reload following the
installation of NX-OS Release 5.2(2), then you cannot nondisruptively download from NX-OS Release 5.2(2) to NX-OS
5.0(x).
2. A downgrade from NX-OS Release 5.2(2) to a release other than Release 5.2(1) disrupts and stops all FCoE traffic because
FCoE requires Cisco NX-OS Release 5.2(x).
All 4.2(x) and 4.1(x)
releases
1. Downgrade to NX-OS Release 5.0(x).
2. Downgrade to NX-OS Release 4.2(x) or 4.1(x).
SAN-OS:
All 3.3(x) releases
1. Downgrade to NX-OS Release 5.0(x).
2. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
3. Downgrade to SAN-OS Release 3.3(x).
All 3.2(x), 3.1(x),
3.0(x) releases, and all
2.1(x) releases.
1. Downgrade to NX-OS Release 5.0(x).
2. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
3. Downgrade to SAN-OS Release 3.3(x).
4. Downgrade to SAN-OS Release 3.2(x), Release 3.1(x)., Release 3.0(x), or
Release 2.1(x).
All 2.0(x) releases.
1. Downgrade to NX-OS Release 5.0(x).
2. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
3. Downgrade to SAN-OS Release 3.3(x).
4. Downgrade to SAN-OS Release 2.1(2x).
5. Downgrade to SAN-OS Release 2.0(x).
Release 1.x
1. Downgrade to NX-OS Release 5.0(x).
2. Downgrade to NX-OS Release 4.2(x) or Release 4.1(x).
3. Downgrade to SAN-OS Release 3.3(x).
4. Downgrade to SAN-OS Release 2.1(2b).
5. Downgrade to SAN-OS Release 1.3(4a).
6. Downgrade to SAN-OS Release 1.x.