Hello everyone!
I got a question concerning two Nexus 5020 and two Fabrix Extender 2000.
The Topology is quite easy. I have the two Nexus 5020 formed to a vPC-Domain and now there are two possibilities to connect the FEXs.
1st:
Each Fabric Extender is connected to a single Nexus 5020 with 2x10G. Everything should work fine but there is no redundancy for the FEXs if one Nexus 5020 goes down.
2nd:
Each FEX is connected with 1x10G to each of the both Nexus 5020 so that there is cabling redundancy. The Nexus 5020 connect to the FEX via a vPC.
Both solutions work BUT....
...with the 1st solution it is possible that I can form a LACP Etherchannel from a Server with two NICs to the FEXs. One Port of the Server on the one FEX and one on the other. The Server has a Full Etherchannel to the Switches.
Now the question:
Is it possible to do this also with the FEXs cross-connected to the Nexus 5020 like in solution No.2? In the Cisco documentation it seems that this seems not to work and seems to be a restriction.
Thanks in advance!
Regards! Markus.