Installation guide

Table Of Contents

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

Table 15 Nondisruptive Downgrade Path from NX-OS Release 5.2(8c)

To NX-OS or SAN-OS

Release Nondisruptive Downgrade Path and Ordered Downgrade Steps

NX-OS:

Release 5.2(1), 5.2(2),

5.2(2a), 5.2(2d),

5.2(6), 5.2(6a), and

5.2(6b), 5.2(8),

5.2(8a), 5.2(8a)

Downgrade directly from NX-OS Release 5.2(8c).

All 5.0(x) releases Downgrade directly from NX-OS Release 5.2(8c)

1. Before downgrading to NX-OS Release 5.0(8a), 5.0(8) or Release 5.0(7) on an MDS 9509 or MDS 9506 switch, see “NX-OS

Release 5.2(x) and Release 5.0(x) Software Downgrade and Upgrade Matrix for Cisco MDS 9509 and 9506 Switches” section

on page 22.

2. 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(8c), you cannot nondisruptively download from NX-OS Release 5.2(8a) to NX-OS 5.0(x).

3. A downgrade from NX-OS Release 5.2(8c) to a release other than Release 5.2(1), 5.2(2), 5.2(2a), 5.2(2d), 5.2(6), 5.2(6a),

5.2(6b), 5.2(8a), or 5.2(8b) 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