Vsm Nic Ordering - Cisco Nexus 1000V Installing Manual
For microsoft hyper-v
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Also See for Nexus 1000V:
- Troubleshooting manual (280 pages) ,
- Configuration manual (96 pages) ,
- Deployment manual (49 pages)
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Chapter 1
Installing the Cisco Nexus 1000V for Microsoft Hyper-V
VSM NIC Ordering
The VSM creates interfaces in an ascending MAC address order of the virtual NIC offered by Microsoft
Hyper-V. Currently, Microsoft Hyper V provides no guarantees that this order is the same as displayed
at the VSM VM Settings panel. The VSM always uses its first interface as control0 and its second
interface as mgmt0. The network profiles for these two interfaces might need different VLANs.
Therefore, you should verify that the interfaces are selected by the VSM in the same order that are
displayed in the Settings panel.
Execute the following CLI on the VSM to verify the order of the management and control mac addresses.
Nexus1000V# show interface mac-address
--------------------------------------------------------------------------------
Interface Mac-Address Burn-in Mac-Address
--------------------------------------------------------------------------------
mgmt0 001d.d8b7.1e61 001d.d8b7.1e61
control0 001d.d8b7.1e60 001d.d8b7.1e60
If the order is not the same, you can use the following commands to specify the preferred MAC to
control0/mgmt0 interface mappings:
•
•
These commands require that you entere the copy running-config startup-config command afterwards
to make the change persistent and effective after the next VSM reload.
switch# show system internal interface mac-address
Sample output:
Interface Preferred MAC
sh interface mac-address
--------- --------------
mgmt0 cccc.bbbb.aaaa
control0 aaaa.bbbb.cccc
If any of the preferred MAC for control0/mgmt0 selected by users is not available at VSM boot up, the
driver ignores it and it picks another interface instead (following MAC ascending order). In that case,
the system logs an error with a syslog as follows:
%KERN-3-SYSTEM_MSG: Preferred MAC (aaaa.bbbb.cccc) for control0 not found – kernel
OL-30997-01
system internal control-mac XXXX.XXXX.XXXX
system internal mgmt-mac XXXX.XXXX.XXXX
Cisco Nexus 1000V for Microsoft Hyper-V Installation Guide, Release 5.2(1)SM1(5.2)
VSM NIC Ordering
1-3
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