2
If an error occurs in DCNM, take a screen shot of the error. In Windows, press Alt+PrintScreen to capture
the active window, or press PrintScreen to capture the entire desktop. Paste the screenshot into a new
Microsoft Paint (or similar program) session and save the file.
3
Capture the exact error codes that you see in the message logs from either DCNM or the CLI.
•
Choose Event Browser in DCNM to see the recent list of messages generated.
•
Copy the error from the message log, which you can display by using either the show logging logfile
or the show logging last number command to view the last lines of the log.
4
Answer the following questions before you contact your technical support representative:
•
On which device or port is the problem occurring?
•
Which Cisco NX-OS software, driver versions, operating systems versions, and storage device
firmware are in your network?
•
What is the network topology? (In DCNM, choose Topology > Save layout.)
•
Were any changes made to the environment (VLANs, upgrades, or adding modules) prior to or at
the time of this event?
•
Are there other similarly configured devices that could have this problem but do not?
•
Where was this problematic device connected (which device and interface)?
•
When did this problem first occur?
•
When did this problem last occur?
•
How often does this problem occur?
•
How many devices have this problem?
•
Were any traces or debug output captured during the problem time? What troubleshooting steps have
you attempted? Which, if any, of the following tools were used?
•
Ethanalyzer, local or remote SPAN
•
CLI debug commands
•
traceroute, ping
•
DCNM tools
5
Answer the following questions if your problem is related to a software upgrade attempt:
•
What was the original Cisco NX-OS version?
•
What is the new Cisco NX-OS version?
•
Collect the output from the following commands and forward them to your customer support
representative:
•
show install all status
•
show log nvram
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
90
Before Contacting Technical Support
Steps to Perform Before Calling TAC
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