Hi,
We currently have a single Expressway C & E with the E deployed behind an ASA as per 3-Port FW DMZ with Single VCS Expressway LAN Interface (http://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/118992-configure-nat-00.html#anc6) so the E has a DMZ IP address and uses only a single LAN port.
We need to deploy a new pair of C & E as a cluster for resilience.
My question is whether the cluster can be set up using the single LAN 1 DMZ IP address or whether we need to enable the LAN2 and connect this inside the network for the cluster communication. This is a Layer 2 deployment so if a second connection is required the E could have an IP Address for clustering on the same VLAN as the primary E.
Many thanks
Paul
