What would be the best way to seperate VMotion network from the VMkernel traffic? Should I just create a seperate vmkernal nic and enable vmotion on it?
Yes I always create a separate nic for VMotion. The one thing i have done is put the redundant Service Console port on the same nic as VMotion.
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This is assuming that you have multiple network segments at your disposal. You can only create one vmkernel interface per segment. So, if you only have one IP segment for this type of traffic, then you are limited to the one vmkernel interface. I generally will keep my service console and vmotion on one pair of NICs. Keep in mind that the only time this port group will be used is during a vmotion, and the rest of the time, it will be idle. If you are using the vmkernel for iSCSI, then that traffic should be separated as well in its own segment.
-KjB
I will put the vmotion network on a seperate vlan on a different subnet.