Does CARP include the node's port in the hash?

Thanks for the information Stephen. It's not the best document and is full of spelling mistakes plus it's expired so it probably wasn't the best place to point you to. Worth noting from the TMOS release notes: "...the hash persistence profile can now perform a pool member selection using a stateless hash algorithm based on the Cache Array Routing Protocol..." which would suggest that F5's implementation is all their own but still implements the core feature. That being the case, it's possible they do consider the port and also that Pool Member ratio could be built in to the calculation.