Problems With Vdp; Vdp Troubleshooting Commands; Vsm Commands; Vem Commands - Cisco Nexus 1000V Troubleshooting Manual

Problems with VDP

Problems with VDP
The following are symptoms, possible causes, and solutions for problems with VDP.
Symptom Possible Causes
VDP packets are not The connected port on the
received by a leaf VEM does not have the
switch. trunk dynamic port profile.
VM is associated but it The encapsulation mode is
is not pinging. not native.

VDP Troubleshooting Commands

This section includes the following topics:
•
•

VSM Commands

You can use the commands in this section to troubleshoot problems related to VDP.
Command
show evb vsi interface vethernet
interface-number
show evb
Cisco Nexus 1000V Troubleshooting Guide, Release 5.2(1)SV3(1.1)
26-2
VSM Commands, page 26-2
VEM Commands, page 26-4
Solution
Verify that the connected port on the VEM has the trunk
1.
dynamic port profile:
show interface ethernet slot/port
If the output of the show interface ethernet command does not
2.
contain dynamic VLANs, configure the port profile for trunk
dynamic mode:
switch# configure terminal
a.
switch(config)# port-profile name
b.
switch(config-port-prof)# switchport mode trunk
c.
switch(config-port-prof)# switchport trunk dynamic
d.
Verify that encapsulation mode is native and a valid VLAN value is
returned by the leaf switch:
module vem module_number execute vemcmd show bd
module vem module_number execute vemcmd show segment
segment_id
Purpose
Displays if the VDP association sequence is
complete for a vEthernet interface. Identify the
vEthernet port of the VM and use this command.
A VSI state of 3 means that it is associated.
See Example 26-1 on page
Displays configured information in the EVB
process.
See Example 26-2 on page
Chapter 26 VSI Discovery and Configuration Protocol
26-3.
26-3.
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