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Nexus line cards incompatibility Question

This is in regards to a caveat re: Nexus 7018.  The issue is incompatibility between the N7K-M148GT-11L and the N7K-F312FQ-25= card running in the same VDC.  Can you tell me where this is found in the documentation?

Rajeshkumar Gatti
Cisco Employee

There are a couple of documents that has the information

1. F3 module was supported on the 6.2.6 code. The 6.2.x release notes has this information

extracted it below so it is recorded for future reference as well-

Interoperability Between Modules

With Cisco NX-OS Release 6.2(6), you can interoperate the F3 Series modules with other types of modules in the same VDC, in a lowest common denominator mode. The following combinations of modules are allowed:

  • F3 Series modules with F2 Series and/or F2e Series modules
  • F3 Series modules with M2 Series modules

In both cases, all modules perform full Layer 2 and Layer 3 forwarding based on their native capabilities (there is no proxy routing with F3 modules as on earlier M Series and F Series mixed VDCs). Therefore, only features that are common to all of the modules in the VDC are supported, and available hardware forwarding table sizes are generally equivalent to the smallest forwarding table sizes of any of the modules.

With Cisco NX-OS Release 6.2(6), you cannot interoperate the F3 Series plus the F2 and/or F2e Series plus the M2 Series modules in the same VDC.

2. Check table 1-2 as well



Thank you so much.  I also went to CiscoLive and there is a presentation called Nexus 7k F3 or M/F2e VDC migration that talks about this very topic & how to execute a migration from M1 cards to F3.

Once again thanks for your timely response.


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