There are quite a few restrictions with IOS SLB. For example if you want SLB to be performed in hardware you need to use dispatched mode but in dispatched mode the real servers have to be L2 adjacent or accessible via a GRE tunnel.
Directed mode doesn't enforce this requirement but then it is handled on the MSFC ie. in software so there will be a performance hit on the 6500.
Basically if you have basic load-balancing requirements and already have a 6500, IOS SLB is a valid choice. But you need to check all the restrictions - see the link in previous thread.
But for more complex or more large scale load-balancing an ACE module is the way to go and bear in mind you can virtualise the ACE module.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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