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Nexus 5548UP / FEX Connectivity doubt

Hello Everybody,

Some weeks ago, we decided to do a connectivity test with our nexus equipment. The topology was fairly simple, only one Nexus 5548UP, no vPC domain configured. 2 Nexus 2248TP Fabric Extenders connected to the 5548UP. Finally, a server, doing NIC teaming, ACTIVE-ACTIVE in a PortChannel config, one link to each Nexus 2248TP Fabric Extender. Topology attached below.

My understanding was that the FEXs were remote line cards, so what we are doing here is like adding 2 linecards to a moludar switch like a 6500 and creating a PortChannel using 1 link to 1 linecard, and 1 link to another linecard.

To my surprise, this was not allowed.

I tried to find and explanation why this could not be configured, but nothing found.


Anyone has an idea why this could be happening?


thanks in advance,







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