We currently have 2 LM-3600 appliances in our main data centre which are (amongst other things), are being used for Exchange 2010 (CAS Load Balancing, SSL Offloading and ESP for OWA, ECP, EAS etc...). We are using a one-armed configuration for Exchange, and there are no clients on the same subnet. Currently, transparency is disabled on all Exchange 2010 virtual services.
Although everything works from an Exchange point of view, we have Exinda network optimisation devices on the LAN/WAN edge of each of our sites. These devices inspect traffic at L7 and attempt to classify the traffic so that it can be optimised. However, the Exinda units have always struggled to identify Exchange 2010 traffic as MAPI, and therefore can't optimise the traffic. Although I suspect the Exinda software is largely to blame for this, Exinda support don't appear to be willing to offer a positive solution.
So, in order to achieve our goal of optimising MAPI traffic, it seems we should enable transparency for Exchange 2010. However, I have a few questions on the subject...
(1) As we're using the Exchange 2010 template from Kemp, would we only need to apply transparency on the Exchange 2010 MAPI service, or would we need to enable transparency on all services (MAPI, SMTP, HTTPS Offloaded with ESP)?
(2) With transparency enabled, the default gateway of the server needs to point to the LoadMaster. Given that we (as IT administrators) still need to maintain the server through RDP, how do others normally achieve this (separate NIC on a management VLAN is my first thought)?
(3) Since Exchange 2010 is now live, is there any way to do this without downtime?
(4) Have I forgotten anything!
Thanks in advance for your help