Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Troubleshooting Guide download pdf (Page 22)

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Cisco MDS 9000 Family Release Notes for Cisco MDS SAN-OS Release 3.2(3)

OL-14116-04

Downgrading Your Cisco MDS SAN-OS Software Image

Use Table 8 to determine your nondisruptive downgrade path, if you have FICON enabled, from Cisco

SAN-OS Release 3.2(3). Find the image release number you are currently using in the Current Release

with FICON Enabled column of the table and use the path recommended.

Downgrading the SSI Image on Your SSM

Use the following guidelines when downgrading your SSI image on your SSM.

• On a system with at least one SSM installed, the install all command might fail on an SSM when

you downgrade from Cisco SAN-OS Release 3.2(3) to any SAN-OS 2.x release earlier than SAN-OS

Release 2.1(2e). Power down the SSM and perform the downgrade. Bring up the SSM with the new

bootvar set to the 2.x SSI image.

• Downgrade the SSI boot images on the SSMs on the switch to a release version supported by your

Cisco SAN-OS release. Refer to the Cisco MDS SAN-OS Release Compatibility Matrix for Storage

Service Interface Images.

• SSM intelligent services traffic switching on SSM ports is disrupted on upgrades or downgrades.

• Fibre Channel switching traffic on SSM ports is not disrupted under the following conditions:

–

All SSM applications are disabled. Use the show ssm provisioning CLI command to determine

if any applications are provisioned on the SSM. Use the no ssm enable feature configuration

mode CLI command to disable these features.

–

The EPLD version on the SSM is at 0x07 or higher. Use the show version module slot epld CLI

command to determine your EPLD version. Refer to the Cisco MDS 9000 Family Release Notes

for Cisco MDS 9000 EPLD Images to upgrade your EPLD image.

–

Refer to the Cisco MDS Storage Services Module Interoperability Support Matrix and to the

“Managing Modules” chapter in the Cisco MDS 9000 Family CLI Configuration Guide,

Release 3.x for information on downgrading your SSM.

Table 8 FICON Downgrade Path from SAN-OS 3.2(3)

To SAN-OS Release with FICON Enabled Downgrade Path

SAN-OS 3.0(3b) You can nondisruptively downgrade directly from SAN-OS Release 3.2(3).

SAN-OS 3.0(2) You can nondisruptively downgrade directly from SAN-OS Release 3.2(3).

SAN-OS 2.0(2b) Use the interface shutdown command to administratively shut any Fibre

Channel ports on Generation 1 modules that are in an operationally down

state before nondisruptively downgrading from SAN-OS Release 3.2(3) to

SAN-OS Release 3.0(3b) or SAN-OS Release 3.0(2), and then to SAN-OS

Release 2.0(2b). An operationally down state includes

Link failure or

not-connected, SFP not present

, or Error Disabled status in the output

of a show interface command. When an interface is administratively shut it

will then show as

Administratively down. Interfaces that are currently up

or trunking do not need to be shut down.

SAN-OS 1.3(4a) Downgrade to SAN-OS Release 3.0(2). Use the shutdown command to shut

all the ports operationally down and administratively up on all the

Generation 1 modules before nondisruptively downgrading to Release

2.0(2b) and then downgrade to 1.3(4a).

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