Expressway-C and Expressway-E Cluster - Across multiple Data Centers
We are planning to install Cisco Expressway-C and Expressway-E cluster across three separate data centers which are connected via WAN connection (No VPN). Please refer to the attached proposed network diagram for reference. Please let me know whether this design is supported and whether we will have control over inbound and outbound call routing thru a specific Expressway-E Expressway-C combination.
This is an interesting design. You'd have to be careful that a call would not go DC1>>DC2>>DC3, this would not be optimal. This design makes sense if you are trying to limit the Cs/Es, but it may prove to introduce some less optimal paths. Might be better to put the Cs in DC 2 & 3, I'm not sure I see an advantage to having the C in DC 1.
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