Verifying Ports; Verifying Layer 2 Connectivity; Verifying Layer 3 Connectivity - Cisco Nexus 1000V Troubleshooting Manual

Chapter 1 Overview
You should also have an accurate topology of your network to help isolate problem areas.
Use the following commands and examine the outputs:
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Note To use commands with the internal keyword, you must log in with the network-admin role.

Verifying Ports

Answer the following questions to verify ports:
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Verifying Layer 2 Connectivity

Answer the following questions to verify Layer 2 connectivity:
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Use the show vlan brief command. The status should be up.
Use the show port-profile command to check a port profile configuration.
Use the show interface-brief command to check the status of a virtual Ethernet port or a physical
Ethernet port.

Verifying Layer 3 Connectivity

Answer the following questions to verify Layer 3 connectivity:
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OL-31593-01
show module
show version
show running-config
show logging log
show interfaces brief
show vlan
show accounting log
show tech support svs
Are you using the correct media copper or optical fiber type.
Is the media broken or damaged?
Are you checking a virtual Ethernet port? If so, use the show interface brief command. The status
should be up.
Are you checking a physical Ethernet port? If so, you need to check it by looking at the server or by
looking at an upstream switch.
Check if the network adapters of the Virtual Supervisor Module (VSM) virtual machine (VM) are
assigned the right port groups and if all of them are connected from vSphere Client.
Are the necessary interfaces in the same VLANs?
Are all ports in a port channel configured the same for speed, duplex, and trunk mode?
Have you configured a gateway of last resort?
Cisco Nexus 1000V Troubleshooting Guide, Release 5.2(1)SV3(1.1)
Troubleshooting Basics
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