My current Exchange Server 2010 HT/CAS server is combined into single server installation, since I got two existing servers, it was setup using Windows NLB Multicast mode.
So all outlook and the application is configured to send email to Virtual IP/Cluster name mail.domain.com
I'm planning to dissolve the Windows NLB and replacing it with hardware load balancer from Riverbed (http://www.riverbed.com/products/application-delivery-performance/load-balancer.html
So what should I do to ensure that I can reuse the same Virtual IP/Cluster name mail.domain.com
and dissolve the NLB successfully without any email traffic downtime / problem later on ?