I am installing UCCX in HA mode. The servers are on the same site and have a RTT of less than 2 ms.
I am wondering whether to put them in the same VLAN or in separate VLANs. The design guide does not seem to state a preference.
Please let me know what approach works for you
A LAN to me, is a LAN - if it's a routed LAN, it's a LAN.
Reasons for UCCX7 to be on a LAN are:
1 - It doesn't play nice if the servers are split; you may get a messy active/active scenario requiring a reboot
2 - It doesn't tolerate delays/comms issues well
These types of problems are equally likely to show up on a flat LAN as a routed one.
I have several customers with routing between the servers, and no problems. The only thing that differs is the usualy Windows behaviour of falling back to broadcast name resolution if DNS/WINS isn't there doesn't work, so it's even more important to ensure that your hosts and lmhosts (not lmhosts.sam) contain the servers names/IPs - if not you find the datastores won't activate.