A customer calls you to report that it receives an error when entering the pinning max-links 4 commandin FEX
configuration mode on its Cisco Nexus 5596T Switch.Which of these is a likely cause for this condition?
A.
The FEX fabric interface is down.
B.
The transceiver is incorrect.
C.
A fabric interface is in a port channel.
D.
The fabric interface switchport mode is set to Access
E.
Only two fabric interfaces are connected.
http://www.cciezone.com/?p=254
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If you are connecting the Nexus 2000s to the Nexus 5000s using port-channels, you will want to set ‘pinning max-links 1’. If you have it set to another value, I believe the NX-OS will throw an error when configuring the port-channel.
This is a good document describing the connectivity options between Nexus 2000 and 5000:
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/C07-572829-01_Design_N5K_N2K_vPC_DG.pdf
Let us know if you need further clarification!
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