Cisco Nexus 5000 Series Release Notes for Release 5.0(3)N2(2) (June 2011)

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Cisco Nexus 5000 Series and Cisco Nexus 2000 Series Release Notes, for Cisco NX-OS Release 5.0(3)N2(2) and Release 5.0(3)N2(1)
Upgrading or Downgrading to a New Release
Upgrade and Downgrade Guidelines
The following guidelines apply to Cisco NX-OS Release 5.0(3)N2(2) and Release 5.0(3)N2(1) for the
Cisco Nexus 5000 Series switches:
• Do not change any configuration settings or network settings during the upgrade. Any changes in
the network settings may cause a disruptive upgrade.
• Cisco NX-OS Release 5.0(3)N2(2) and Release 5.0(3)N2(1) are ISSU-compatible with NX-OS
Release 4.2(1)N1(1) and later releases.
• Cisco NX-OS Release 5.0(3)N2(2) and Release 5.0(3)N2(1) are not ISSU-compatible with NX-OS
Release 4.1(3)N2(1a) and earlier releases.
• Upgrading to and from NX-OS Release 4.1(3) is disruptive.
• Downgrading from NX-OS Release 5.0(2) to NX-OS Release 4.2(1) is disruptive.
• Upgrading from NX-OS Release 4.2(1) to NX-OS Release 5.0(2) is a nondisruptive upgrade
(ISSU).
• Upgrading from a Cisco NX-OS Release 4.2(1)-based release to NX-OS Release 5.0(3)N2(2) or
Release 5.0(3)N2(1) is nondisruptive.
• Downgrading from Cisco NX-OS Release 5.0(3)N2(2) or Release 5.0(3)N2(1) to a previous release
is disruptive.
• 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.
Supported Upgrade and Downgrade Paths
Table 5 shows the upgrade and downgrade possibilities for Cisco NX-OS Release 5.0(3)N2(2) and
Release 5.0(3)N2(1):
Upgrading from NX-OS Release 5.0(3)N2(1) to Release 5.0(3)N2(2) is nondisruptive.
Downgrading from NX-OS Release 5.0(3)N2(2) to Release 5.0(3)N2(1) is nondisruptive