Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 4.2(1a) (OL-19964-02, September 2009)
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Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 4.2(1a)
OL-19964-02
Upgrading Your Cisco MDS NX-OS Software Image
• Install and configure dual supervisor modules.
• Issue the show install all impact upgrade-image CLI command to determine if your upgrade will
be nondisruptive.
• Be aware that you need to enable Telnet following the upgrade. See “Enabling Telnet Required After
an Upgrade” section on page 19.
• Follow the recommended guidelines for upgrading a Cisco MDS 9124 or MDS 9134 Switch as
described in “Upgrading a Cisco MDS 9124 or Cisco MDS 9134 Switch” section on page 22.
• Follow the guidelines for upgrading a single supervisor switch as described in “Performing a
Disruptive Upgrade on a Single Supervisor MDS Family Switch” section on page 23.
• Make note of the information concerning SANTap when performing upgrades on a Cisco MDS
9222i switch, as described in “Upgrading an MDS 9222i Switch with SANTap or Invista is
Provisioned on the SSM” section on page 19.
• Be aware of the impact of an upgrade on VSAN 4079 if you are upgrading from SAN-OS Release
3.x to NX-OS 4.2(1a). See the “Upgrading Effect on VSAN 4079” section on page 19 for details.
• Be aware that some features impact whether an upgrade is disruptive or nondisruptive:
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Fibre Channel Ports: Traffic on Fibre Channel ports can be nondisruptively upgraded. See
Table 8 for the nondisruptive upgrade path for all NX-OS and SAN-OS releases.
–
SSM: Intelligent services traffic on the SSM, such as SANTap, NASB, and FC write
acceleration, is disrupted during an upgrade. SSM Fibre Channel traffic is not.
–
Gigabit Ethernet Ports: Traffic on Gigabit Ethernet ports is disrupted during an upgrade or
downgrade. This includes IPS modules and the Gigabit Ethernet ports on the MPS-14/2 module,
the MSM-18/4 module, and the MDS 9222i switch. Those nodes that are members of VSANs
traversing an FCIP ISL are impacted, and a fabric reconfiguration occurs. iSCSI initiators
connected to the Gigabit Ethernet ports lose connectivity to iSCSI targets while the upgrade is
in progress.
–
Inter-VSAN Routing (IVR): With IVR enabled, you must follow additional steps if you are
upgrading from Cisco SAN-OS Release 2.1.(1a), 2.1(1b), or 2.1.(2a). See the “Upgrading with
IVR Enabled” section on page 19 for these instructions.
–
FICON: If you have FICON enabled, the upgrade path is different. See the “FICON Supported
Releases and Upgrade Paths” section on page 17.
Use Table 8 to determine your nondisruptive upgrade path to Cisco MDS NX-OS Release 4.2(1a), find
the image release number you are currently using in the Current column of the table, and use the path
recommended.
Note The software upgrade information in Table 8 applies only to Fibre Channel switching traffic. Upgrading
system software disrupts IP traffic and SSM intelligent services traffic.