Cisco Cisco MDS 9000 NX-OS Software Release 7.3 Guía De Instalación

Cisco MDS 9000 NX-OS Software Upgrade and Downgrade Guide, Release 7.3(x)

Downgrading from Cisco NX-OS Release 7.3(x)

Note

•

To downgrade from Release 7.3(x) to Release 5.2(x) on a Cisco MDS 9500 Series Switch, first
downgrade to Release 6.2(x) and then downgrade to Release 5.2(x).

•

To downgrade from Release 7.3(x) to Release 6.2(x) on a Cisco MDS 9396S Series Switch, you must
first disable the extended rx b2b credit configuration using the no feature fcrxbbcredit extended
command. Once the downgrade process is complete, enable the extended rx b2b credit configuration
using the feature fcrxbbcredit extended command.

The following section describes how to downgrade from NX-OS Release 7.3(x)to NX-OS Release 6.2(x)
or 5.2(x).

Note

Parallel In-Service Software Downgrade (ISSD) is not recommended on MDS 9148S, MDS 9250i and
MDS 9396S fabric switches when these category of fabric switches are peers to each other.

Downgrading from Cisco MDS NX-OS Release 7.3(x) to Cisco MDS NX-OS Release 6.2(x)

You must follow these general guidelines before performing a software downgrade from MDS NX-OS
Release 7.3(x) to MDS NX-OS Release 6.2(x).

MDS 9700 Series Director with the 48-Port 10-Gigabit FCoE Module and VLAN Configurations

Note

You must not perform the Step 2 before Step 1. If you perform Step 2 before Step 1, unexpected events
might occur in the switch.

To downgrade from NX-OS Release 7.3(x) to Cisco MDS NX-OS Release, 6.2(9)and above, follow these
steps:

Step 1

You must remove all 48-Port 10-Gigabit FCoE modules from the Cisco MDS 9710 chassis.

Step 2

Use the purge module running-config command to remove any FCoE-related configuration from each
48-Port 10-Gigabit FCoE module that is removed.

Step 3

You must remove all VLANs that you have created and verify that no VLAN or VSAN mapping exist on
the switch by using the show vlan and show vlan fcoe command.

Step 4

You must remove all Ethernet Port Channels and verify that no Ethernet Port Channel exists on the
switch by using the show interface brief and show ethernet-port-channel database command.

Step 5

You must remove all virtual Fiber Channels (vFCs) and verify that no vFC exists on the switch by using
the show interface brief command.

MDS 9700 Series Director with the 24-Port 40-Gigabit FCoE Module and VLAN Configurations

To downgrade from NX-OS Release 7.3(x) to Cisco MDS NX-OS Release, 6.2(9)and above, follow these
steps: