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New Member

windows 2012 servie profile nics in strange order

I got a 2012r2 service profile with 4 nics shown

 

1 pair is the host nics

1 pair is the iscsi nics

 

the order in ucsm is

eth0-fabA 1

eth0-fabB 2

eth1-fabA 3

eth1-fabB 4

 

etho are host nics

eth1 are iscsi data nics

 

but in windows 2012

 

the order is different

 

in device manager it shows as

Cisco VIC Ethernet interface

Cisco VIC Ethernet Interface #2

Cisco VIC Ethernet Interface #3

Cisco VIC Ethernet Interface #4

 

but in network connections by checking the mac address in windows and ucs

Cisco VIC Ethernet Interface  is actually eth1-fabB

Cisco VIC Ethernet Interface #2 is eth1-fabA

Cisco VIC Ethernet Interface #3 is eth0-fabA

Cisco VIC Ethernet Interface #4 is eth0-fabB

 

wh is is like this? I want 

 

Cisco VIC Ethernet Interface to be eth0-fabA

Cisco VIC Ethernet Interface #2 eth0-fabB

Cisco VIC Ethernet Interface #3 eth1-fabA

Cisco VIC Ethernet Interface #4 eth1-fabB

 

how do i do it?

 

 

 

 

 

 

2 REPLIES
New Member

I found out that  in windows

I found out that  in windows 2012r2 , if I remove the cisco VIC netork adapters from device manager and then rescan hardware, the nics in windows comes out to be in a different order.

 

This means, 

 

Cisco VIC Ethernet Interface could change eth0-fabA

Cisco VIC Ethernet Interface #2 could change to eth0-fabB

Cisco VIC Ethernet Interface #3 could change to eth1-FabA

Cisco VIC Ethernet Interface #4 could change to eth1-FabB

 

 

but if I remove them again from device manager and rescan hardware

 

The order could change again

 

Has anyone seen this issue with 2012 r2?

 

New Member

This is a Microsoft

This is a Microsoft limitation in the way it scans for PCI devices from memory, it doesn't do them in sequence. If using iSCSI boot you cannot do what you have proposed above as you could never remove all Ethernet devices from the system. As they are all Ethernet devices, you can remove all but 1 iSCSI vnic (you need at least 1 path for your iSCSI boot LUN) and reinstall the Ethernet driver one by one in the desired order. People have written scripts out there to do this but afraid I don't have any links that are handy. Do a quick Google and I am sure you will find something of interest.

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