Maximum FEX devices for a Nexus 7K vPC domain with sup2

[Andres Franco]

Hello community,

I would like to know what is the maximum number of FEX devices that can be connected (straight through according to supported FEX topologies) to a pair of Nexus 7k with sup2 forming a vPC domain?. I know that for 1 Nexus 7K it will support 32 FEX, but what happens with 2 Nexus 7k forming a vPC domain? will they support 64 FEX (32 FEX each one)? or the resulting "cluster" will support only 32 FEX taking into consideration that it will appear to be a single Nexus switch?. That´s my doubt and it is important in order to let me know the scalability available for the commented scenario. Thanks in advance.

N7K1 ------ vPC -----N7K2

  |                                    |

  |                                    |

FEX1                          FEX2

 (x32 or x64 with sup2?)

[ageralde · Accepted solution]

Hi andres@franco, 

FEX Straight through topology will support 64 FEX’s (32 per Nexus 7000). Please check VPC Topology (configuring vpc's)  link for more information: http://cs.co/9000cT1O. Feel free to message me for further assistance. Hope this helps!:)

Thanks,

Angela (ageralde@cisco.com)