We currently have 2 data centres and traffic from anywhere is sent from our customers to a Windows cluster IP and TCP port number. Its old and unreliable and unwieldy.
What i am looking for is a device that sits one network hop up from our 2 data centres that can support our internet facing IP address and make routing decisions based on a combination of source/destination address and source/destination port as to which data centre and ultimately which server the traffic is forwarded to. This will then allow me to direct all traffic to one DC whilst hardware in the other is upgraded.
In the old days I would have looked at things like ACE or even CSS but those are gone or going and there does not seem to be a clear replacement path with Cisco unless someone knows different.
Thanks in anticipation of replies