Troubleshooting Nexus 7000 - Useful commands

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Oct 15, 2011 2:48 AM
Oct 15th, 2011

Introduction:

This document can be used as a reference for troubleshooting Nexus 7000.

Prerequisites:

Nesus 7000

Commands:

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 databse

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

Related information:

Configring vPCs

Configuring onboard failure logging

Virtual device context

NX-OS layer 2 configuration guide

NX-OS interface commands

Hope you find this document useful, enjoy reading!

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Comments

ayojosh2k@gmail.com Sat, 12/03/2011 - 06:24 (reply to pnagpal)

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


i.e


NEXUS>>>>>Server


Ping of about 80ms and sometimes even times out.


To me, this is strange.


Any ideas???


NX-OS Version is 5-02a

pnagpal Tue, 12/13/2011 - 21:26 (reply to ayojosh2k@gmail.com)

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.

Regards,

Pulkit

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