Cisco Nexus 1000V Troubleshooting Manual page 98

Problems with the VSM
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 .
14
16 1a030100
The last line of output indicates that vmnic1 should be in Trunk mode, with the CBL value of 1. The
CBL value of the native VLAN does not have to be 1. It will be 0 if it is not allowed, or 1 if it is VLAN
1 and not allowed. This is not an issue unless the native VLAN is the Control VLAN.The Admin state
and Port state should be UP.
Use the following commands to verify that the vmnic port that is supposed to carry the control VLAN
Step 5
and packet VLAN is present.
vemcmd show bd control_vlan
vemcmd show bd packet_vlan
Example:
~ # vemcmd show bd 3002
BD 3002, vdc 1, vlan 3002, 2 ports
Portlist:
10
16
~ # vemcmd show bd 3003
BD 3003, vdc 1, vlan 3003, 2 ports
Portlist:
12
16
Use the vemcmd show trunk command to verify the following:
Step 6
The control and packet VLANs are shown in the command output, indicating that the DV port
•
groups are successfully pushed from the vCenter Server to the host.
The correct physical trunk port vmnic is used.
•
Example:
~ # vemcmd show trunk
Trunk port 16 native_vlan 1 CBL 1vlan(1) cbl 1, vlan(3002) cbl 1, vlan(3003) cbl 1,
At least one physical uplink must be carrying the control and packet VLANs. If more than one uplink is
carrying the control and packet VLANs, the uplinks must be in a port channel profile. The port channel
itself would not be visible because the VEM is not yet added to the VSM.
Use the following commands to restore connectivity that is lost due to incorrect port and system VLAN
Step 7
settings:
vemcmd show port port-ltl-number
vemcmd set system-vlan vlan_id ltl port-ltl-number
Example:
~ # vemcmd show port 48
LTL
. . .
48
~ # vemcmd set system-vlan 99 ltl 48
Note
Cisco Nexus 1000V Troubleshooting Guide, Release 4.2(1)SV2(2.1)
7-16
0 3967 0
1 T 0
l22
vmnic1
l24
vmnic1
IfIndex Vlan Bndl
1b030000 1 0
Use these vemcmds only as a recovery measure and then update the port profile configuration
with correct system VLANs.
2 2 VIRT
2 2 PHYS
SG_ID Pinned_SGID Type
32 1 VIRT
Chapter 7 VSM and VEM Modules
UP UP 1 Access l26
UP UP 1 Trunk vmnic1
Admin State CBL Mode
UP DOWN 0 Access vmk1
Name
OL-28795-01