[Spread-users] Spread, Load-balancers and NAT

[Tom Johnson]

Hello-

I'm a total newbie looking at using Spread to centralize logging and to
distribute a small database to a number of servers in several different
data centers.  Each datacenter uses a Foundry ServerIron XL for load
balancing.  Each collection of servers is on a private subnet
(192.168.1.x).  Traffic is globally load-balanced across the
datacenters.  For example:

      DataCenter 1
        publicly available address 209.3.x.x  load-balanced over 
        5 servers behind the ServerIron
		192.168.1.11 - 192.168.1.15  <- NOTE: Same addresses as
in other DataCenters

      DataCenter 2
        publicly available address 216.55.x.x  load-balanced over 
        5 servers behind the ServerIron
		192.168.1.11 - 192.168.1.15  <- NOTE: Same addresses as
in other DataCenters

      DataCenter 3
        publicly available address 64.125.x.x  load-balanced over 
        5 servers behind the ServerIron
		192.168.1.11 - 192.168.1.15  <- NOTE: Same addresses as
in other DataCenters
	

All the servers in all three DataCenters should send logging info back
to the network in DataCenter 1.

Likewise, a master database in DataCenter 1 needs to have updates
replicated to each server in all three data centers.


Can spread work like this, where load-balancers and NATs are involved?
Or would we have to change everything such that each server had a
publicly available IP address?

Thanks-

Tom