22-11
Cisco Nexus 1000V Troubleshooting Guide, Release 5.2(1)SV3(1.1)
OL-31593-01
Chapter 22 System
VEM Troubleshooting Commands
• Make sure that at least one of the VMware virtual NICs is on the correct DVS port group and is
connected.
• If the VMware virtual NIC is down, determine if there is a conflict between the MAC address
configured in the OS and the MAC address assigned by VMware. You can see the assigned MAC
addresses in the vmx file.
When troubleshooting problems with inter-host VM traffic, follow these guidelines:
• Determine if there is exactly one uplink sharing a VLAN with the VMware virtual NIC. If there is
more than one, they must be in a port channel.
• Ping a SVI on the upstream switch using the show intX counters command.
VEM Troubleshooting Commands
Use the following commands to display VEM information:
• vemlog – displays and controls VEM kernel logs
• vemcmd – displays configuration and status information
• vem-support all – collects support information
• vem status– collects status information
• vem version– collects version information
• vemlog show last number-of-entries – displays the circular buffer
Example 22-2 vemlog show last Command
[root@ESX-cos1 ~]# vemlog show last 5
Timestamp Entry CPU Mod Lv Message
Oct 13 13:15:52.615416 1095 1 1 4 Warning vssnet_port_pg_data_ …
Oct 13 13:15:52.620028 1096 1 1 4 Warning vssnet_port_pg_data_ …
Oct 13 13:15:52.630377 1097 1 1 4 Warning svs_switch_state …
Oct 13 13:15:52.633201 1098 1 1 8 Info vssnet new switch …
Oct 13 13:16:24.990236 1099 1 0 0 Suspending log
• vemlog show info – displays information about entries in the log
Example 22-3 vemcmd show info Command
[root@ESX-cos1 ~]# vemlog show info
Enabled: Yes
Total Entries: 1092
Wrapped Entries: 0
Lost Entries: 0
Skipped Entries: 0
Available Entries: 6898
Stop After Entry: Not Specified
• vemcmd help – displays the type of information you can display
Example 22-4 vemcmd help Command
[root@ESX-cos1 ~]# vemcmd help
show card Show the card's global info
show vlan [vlan] Show the VLAN/BD table
show bd [bd] Show the VLAN/BD table
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