Multiple Cloud Connector appliances within a single PSTN site Requirements

[Alistair Keay]

For multiple Cloud Connector Editions within a single PSTN _ ie 2 x CCEs

Do they have to be on the same subnet? What communication (if any) is required between them?

We have two very well connected sites.

So could we have one CCE in site 1 and the other in site 2? (They would be on different vlans\subnets). The thinking is if we loose one site users would still be able to make and receive calls without having to perform effectively DR.  

I see that there has to be a file share accessible to both in the documentation but not much more beyond that.

Thanks for any advice.

[#2 · Accepted solution]

Hi Alistair,

They can be in different subnets, but a couple things to be aware of:

File Share Access

As you have already seen, there is a fileshare one the Master CCE host that needs to be accessible from the Slave on ports TCP 445 and 139. If there's a firewall in between your appliances, make sure you open these ports

Edge Server DNS Resolution & Routing

If you have two CCE instances on different subnets, you need to make sure that Edge Server 1 can route to Mediation Server 2 and vice versa. To achieve this, you need to ensure the mediation server of the second CCE instance is resolvable from the Edge server, and that you can route from that Edge server to the Mediation server in the second site.

For DNS resolution, I use a HOST File on the Edge, and add the second Mediation Server manually to it:

Once resolution is ok, you will also need to add a static route to each server to ensure traffic to the other Mediation server's subnet routes via the correct interface: the internal NIC:

 

Hope this helps,

Damien

[#3]

Thanks