Questions related to FI's.

I had a couple of questions related to the FI's.

1. Why are both NPV and NPIV enabled on them? Shouldnt NPV be enough?

2. On the task where we create a SAN port channel to the MDS from the FI , we see the guide saying that the san port channel 2 gets associated to the vsan 101 but it does not show it in the output once we enable the San port channel. So, question is , is it required?

 

vsan database
vsan 101
vsan 101 interface san-port-channel2

Comments

  • NPV and NPIV are enabled because you are doing nested NPV with the FI. If you had a VMware host installed on a blade and wanted to do multiple FLOGI per vNIC/vEth port off the FI then the FI has to have NPIV capability. It in turn is doing multple FLOGI per-port to the upstream MDS or 5K and hence needs the NPV capability as well.

    With the PortChannel from the FI to the MDS/5K the configuration depends on if you are doing an F-Port PortChannel or if you are doing an F-Port PortChannel Trunk. When you enable the feature fport-channel-trunk on the MDS you are enabling it to do 2 things:

    1. Have a PortChannel configured in F-Port mode.

    2. Have a PortChannel that is in F-Port mode and that can be a trunk.

    If the PortChannel is configured in Mode F but has trunk mode off then you need to assign it to the VSAN. If you have a PortChannel that is an F-Port but it is configured for trunk mode on as well then you need to allow the VSAN on the PortChannel but you do not need to assign the PortChannel to the VSAN. This also requires turning on the FC Uplink Trunking feature on the FI.

    Hope this helps.

     

  • The last part you mentioned " If you have a PortChannel that is an F-Port but it is configured for
    trunk mode on as well then you need to allow the VSAN on the PortChannel
    but you do not need to assign the PortChannel to the VSAN. This also
    requires turning on the FC Uplink Trunking feature on the FI." 
    clarifies everything . Thanks a lot!!! :)

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