Cisco Nexus 5000 Series Release Notes, Release 4.0(1a)N1(1) (OL-16601-01 G0)

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Cisco Nexus 5000 Series Release Notes, Release 4.0(1a)N1(1)
OL-16601-01
Caveats
• CSCsu32247
Symptom: The Nexus 5000 Series switch executes the power-on self-test (POST) at bootup to
validate hardware integrity of the ASICs. When a Fibre Channel port is connected to a host bus
adapter (HBA), the HBA driver can trigger a signal loss that causes a false failure to be reported by
POST for one of the ASICs. As a result, all the ports serviced by the ASIC on the GEM are marked
for hardware failure.
Workaround: Do not connect HBAs to the FC expansion modules.
• CSCsu40126
Symptom: When the Nexus 5000 Series switch is configured to operate in the N-port virtualization
(NPV) mode, the LOGOs received over the server port are not processed properly. This results in
stale Fibre Channel IDs at the switch.
Workaround: Perform shut and no shut command operations on all the server ports to clear the
stale state on the NPV switch.
• CSCsm66194 and CSCsr66209
Symptom: Logins may not be uniformly balanced across all available border ports when the Nexus
5000 series switch operates in the NPV mode under conditions such as the following:
• The switch is reloaded.
• NPIV is disabled and re-enabled on the NPV core-switch.
• The NPV core-switch is reloaded.
• A new NP link is added.
Workaround: Perform shut and no shut command operations on all the server ports to rebalance
the logins.
• CSCsu25775
Symptom: When the Nexus 5020 Series switch is connected to a 110 V power supply, the following
problems occur:
• The syslog displays warnings at bootup. Although the hardware supports the 110 V input, the
operating system incorrectly logs the warning message.
• The show environment power command incorrectly displays the available power as a negative
value.
Workaround: The problem is not significant and the system operates normally with 110 V power
supply input. There is no workaround to avoid the syslog message.
Resolved Caveats—Cisco NX-OS Release 4.0(0)N1(2)
This section lists the resolved caveats for this release.
• CSCsq61505
Symptom: Problems are encountered while upgrading to Release 4.0(0)N1(2) from Releases
4.0(0)N1(1) or 4.0(0)N1(1a).
Workaround: None.