I have two Servers in different Networks and all the users need to access the server. When one server will be down the user's traffic will be forwarded to another servers. I need this solution in router level and with configuration of Nating. Please find the low level diagram.
As mentioned in the previous message, the only IOS feature that will perform this function is Server Load Balancing (SLB). This is only supported in a limited number of platforms and IOS versions (www.cisco.com/go/fn)
Additionally, SLB is in the process of being deprecated from IOS, so the future for laod balancing will be ACE.
HTH.
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