Private Vlan Ports; Troubleshooting Guidelines; Private Vlan Troubleshooting Commands - Cisco Nexus 1000V Troubleshooting Manual

Troubleshooting Guidelines

S e n d d o c u m e n t c o m m e n t s t o n e x u s 1 k - d o c f e e d b a c k @ c i s c o . c o m .

Private VLAN Ports

Within a private VLAN domain, there are three separate port designations. Each port designation has its
own unique set of rules which regulate the ability of one endpoint to communicate with other connected
endpoints within the same private VLAN domain. The following are the three port designations:
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•
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For additional information about private VLANs, see the Cisco Nexus 1000V Layer 2 Switching
Configuration Guide, Release 4.2(1)SV2(1.1).
Troubleshooting Guidelines
Follow these guidelines when troubleshooting private VLAN issues:
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•
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Private VLAN Troubleshooting Commands

Use the commands listed in this section to troubleshoot problems related to private VLANs.
To verify that a private VLAN is configured correctly, use the following command:
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To verify if a physical Ethernet interface in a private VLAN trunk promiscuous mode is up, use the
following command:
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Cisco Nexus 1000V Troubleshooting Guide, Release 4.2(1)SV2(2.1)
13-2
promiscuous
isolated
community
Use the show vlan private-vlan command to verify that a private VLAN is configured correctly.
Use the show interface slot-port command to verify the interface is up.
Use the module vem module-number execute vemcmd show port command to verify the VEM is
configured correctly.
show vlan private-vlan
n1000V# show vlan private-vlan
Primary Secondary Type
------- --------- ---------------
152 157 community
152 158 isolated
156 153 community
156 154 community
156 155 isolated
show interface
n1000V# show int eth3/4
Ethernet3/4 is up
Hardware: Ethernet, address: 0050.565a.ca50 (bia 0050.565a.ca50)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 0/255, txload 0/255, rxload 0/255
Encapsulation ARPA
Port mode is Private-vlan trunk promiscuous
full-duplex, 1000 Mb/s
Beacon is turned off
Auto-Negotiation is turned off
Input flow-control is off, output flow-control is off
Auto-mdix is turned on
Ports
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Chapter 13 Private VLANs
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