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If you are looking for the HP Flex Fabric mappings click here. These are pretty straight forward and should be known to all HP c-Class Administrators.

In our example we use HP BL460 G6 blades with 4 Flex-10 NIC’s (two onboard and two provided via a Dual Port Mezzanine Card) Please note that the connections that are drawn below are hardwired connections on the Backplane of the HP c7000 Enclosure. The HP Virtual Connect Domain virtualizes each 10GB NIC and creates 4 Flex Nics for it.

The image below shows how the technical design looks now: From a Virtual Connect Manager perspective we used the following settings in the attached Server Profile (see image below) Pleaste note that we defined all 16 NIC’s and left 6 of them “Unassigned”.

Since this post is one of my top articles I decided to write more about the extensive testing, read all about it here For those who are interested I’ll explain the strange technical problem to close off of this blog: Whenever a Virtual Connect Module fails, the downlinks towards ESX will fail as well (since these are hardwired via c7000 Backplane).So, our VMware v Sphere Host is physically equipped with 4 10GB NIC’s so you would expect to see 4 vmnic’s in ESX right? After doing some math 😉 we can conclude that we will get 16 vmnic’s in our ESX Host.The image below shows us that we get 4 Flex Nics per Port and how these Flex Nics correspond to a vmnic from within ESX.While doing failover tests we noticed that our networking department didn’t turned on Portfast as we had requested which resulted in spanning tree kicking in whenever we powered on a Virtual Connect Module.Word of advice: Next issue we ran into where some CRC errors in the Virtual Connect Statistics (while the Cisco’s didn’t register any CRC errors).

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