Recovering Management And Control Connectivity Of A Host When A Vsm Is Running On A Vem; Using The Vem Connect Script - Cisco Nexus 1000V Troubleshooting Manual

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 .
vlan
------+----------------+--------+-----+----------+--------------------------
Active Supervisor:
* 3002
Do one of the following:
Step 6
•
•
Step 7 On the VEM, enter the following commands to verify that the VSM MAC appears in the control and
packet VLANs.
config t
module vem module_number execute vemcmd show l2 control_vlan_id
module vem module_number execute vemcmd show l2 packet_vlan_id
The VSM eth0 and eth1 MAC addresses should display in the host control and packet VLANs.
Example:
n100v# config t
n1000v(config)# module vem 3 execute vemcmd show l2 3002
Bridge domain 3002 brtmax 100, brtcnt 3, timeout 120
n1000v(config)# module vem 3 execute vemcmd show l2 3003
Bridge domain 3002 brtmax 100, brtcnt 3, timeout 120
Do one of the following:
Step 8
•
•
Recovering Management and Control Connectivity of a Host when a VSM is
Running on a VEM
When the VSM is running on a VEM that it manages, but the VSM ports are not configured with system
port profiles, the control and management connectivity of the VSM can be lost after a host reboot or
similar event. To recover from the loss, you can run the VEM connect script locally in the ESX host
where the VEM is running. Then go to the VSM and configure the system VLANs in the port profile
used for management.

Using the VEM Connect Script

The VEM connect script sets a given VLAN as a system VLAN on the vmknic that has the given IP
address, and also sets the VLAN on all the required uplinks.
Cisco Nexus 1000V Troubleshooting Guide, Release 4.2(1)SV2(2.1)
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mac address type
00:02:3d:40:0b:0c
If the output from Step 5 does not display the MAC address of the VSM, then there is a problem
with connectivity between the server hosting the VSM and the upstream switch. Recheck the VSM
configuration and vCenter Server configuration.
Otherwise, continue with the next step.
Dynamic MAC 00:50:56:be:7c:a7
Dynamic MAC 00:02:3d:40:0b:0c
Dynamic MAC 00:50:56:be:7c:a7
Dynamic MAC 00:02:3d:20:0b:0c
If the MAC address of the VSM does not appear in the output of
configuration as explained in
Otherwise, you have completed this procedure.
learn age
dynamic Yes 0
LTL 16 pvlan
LTL 10 pvlan
LTL 16 pvlan
LTL 10 pvlan
"Checking the VEM Configuration" section on page
Chapter 7 VSM and VEM Modules
ports
Gi3/2
0 timeout 110
0 timeout 110
0 timeout 110
0 timeout 110
Step 7, then check the VEM
7-14.
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