Cisco Nexus 5000 Series and Cisco Nexus 2000 Series Release Notes,Cisco NX-OS Release 5.1(3)N2(1a) and NX-OS Release 5.1(3)N2(1)

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Cisco Nexus 5000 Series and Cisco Nexus 2000 Series Release Notes, Cisco NX-OS Release 5.1(3)N2(1a) and NX-OS Release 5.1(3)N2(1)
OL-26652-02
Upgrading or Downgrading to a New Release
The interface uses the XML-based Network Configuration Protocol (NETCONF) that allows you to
manage devices and communicate over the interface with an XML management tool or a program. The
Cisco NX-OS implementation of NETCONF requires you to use a Secure Shell (SSH) session for
communication with the device.
NETCONF is implemented with an XML Schema (XSD) that allows you to enclose device configuration
elements within a remote procedure call (RPC) message. From within an RPC message, you select one
of the NETCONF operations that matches the type of command that you want the device to execute. You
can configure the entire set of CLI commands on the device with NETCONF. To download the NX-OS
XML Schema Definition, go to the following URL and select one of the supported devices:
http://www.cisco.com/cisco/software/navigator.html.
For more information, see the Cisco Nexus XML Interface User Guide.
New Hardware Features in Cisco NX-OS Release 5.1(3)N2(1)
Cisco NX-OS Release 5.1(3)N2(1) supports the following new hardware:
• Cisco Nexus 5596UP switch,1100 Watts AC Reverse Air Flow Power Supply (N55-PAC-1100W-B)
• Cisco Nexus 5596UP switch, Reverse Air Flow Fan Tray (N5596UP-FAN-B)
• Cisco Nexus 22xx FEX, 350 Watts DC Reversed Air Flow Power Supply (N2200-PDC-350W-B)
Upgrading or Downgrading to a New Release
This section describes the upgrade and downgrade paths that are supported for Cisco NX-OS
Release 5.1(3)N2(1a) and Cisco NX-OS Release 5.1(3)N2(1) on the Cisco Nexus 5000 Series switch.
This section includes the following topics:
• Upgrade and Downgrade Guidelines, page 10
• Supported Upgrade and Downgrade Paths, page 11
Upgrade and Downgrade Guidelines
The following guidelines apply to Cisco NX-OS Release 5.1(3)N2(1a) and Cisco NX-OS
Release 5.1(3)N2(1) for the Cisco Nexus 5000 Series switches:
• If host interface (HIF) port channels or EvPCs are configured in the system and if the system was
already upgraded to NX-OS Release 5.1(3)N1(1) or Release 5.1(3)N1(1a) from any release earlier
than Release 5.1(3)N1(1), ensure that the system was reloaded at least once before you upgrade to
Release 5.1(3)N2(1a) or Release 5.1(3)N2(1). If the switch was not previously reloaded, reload it
and upgrade to Release 5.1(3)N2(1a) or Release 5.1(3)N2(1).
• When a Layer 3 license is installed, the Cisco Nexus 5500 Platform does not support an ISSU. Hot
swapping a Layer 3 module is not supported.
• When you upgrade to or downgrade from Cisco NX-OS Release 4.1(3)N2(1) and earlier releases, a
short delay might occur before the startup configuration is applied.