Troubleshooting Nexus 7000 - Useful commands


Wed, 02/24/2016 - 07:22
Oct 15th, 2011
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This document can be used as a reference for troubleshooting Nexus 7000.


Nexus 7000


VPC Related

show running-config vpc
show vpc consistency-parameters
show vpc
show vpc peer-keepalives
show vpc statistics

For module reset

From Sup:

show logging
show tech module X

From Module:

show logging onboard obfl-history
show logging onboard kernel-trace
show logging onboard exception-log
show logging onboard boot-uptime

For Etherchannel 

show port-channel summary
show port-channel traffic
show port-channel database
show lacp neighbor

For vdc

show vdc membership
show vdc resource
show vdc current-vdc

For vlan

show vlan vlan-id
show vlan all-ports
show vlan private-vlan
show vlan private-vlan type
show interface vlan-id private-vlan mapping
show tech-support vlan

Dear Pulkit,

I just deployed a nexus 7010 switch at a server farm. after deployment, it was notices that there are surges in latency across the network. The default gateway was then moved to the nexus, with this pinging from an host on the same subnet there is intermitent burst is latency



Ping of about 80ms and sometimes even times out.

To me, this is strange.

Any ideas???

NX-OS Version is 5-02a

Pulkit Nagpal Tue, 12/13/2011 - 21:26
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Hi Joshua,

This might require analysis of certain things, like configuration, connectivity between Nexus and Server, Module etc. I suggest you please open a discussion on this in LAN, Routing and Switching section and post configuration, module information etc there.



Heather Basquill Wed, 02/24/2016 - 07:22
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Another very helpful command is:

show cli list  - This will display all available cli options at your current level


Nexus-router# show cli list | in show | in event-log
show hardware internal sprom event-log
show cfs internal ethernet-peer event-log


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