Referring to this documentation: http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/C07-572829-01_Design_N5K_N2K_vPC_DG.pdf
I have a question regarding static pinning. While going over the configuration in my data center, I noticed that all of my fex configurations have:
pinning max-links 1
On one particular 5548, for example, I have 6 FEXs. 2 are 2232 and 4 are 2248. The 2232s have 4 uplinks to the 5Ks (two to each) and the 2248s have 2 uplinks (one to each). Based on the way the above mentioned documentation describes static pinning, it looked to me as if only 1 physical interface in each of the fex-fabric port-channels would be used. I issued a "clear counters" on the 5K and check them a little while later. What I saw was that traffic seemed to be distributed across all of the physical links in the fex-fabric port-channel groups (see attached). I'm wondering why. Am I mis-interpreting static pinning?
Also, here's how a typical server is connected to the Data Center LAN
Po29 is the vPC peer link. Po3103 is a vPC configured at the 5K.
Thanks,
Steven
