Dear Mailing list!

I am using Zenloadbalancer community edition 3.05 to load balance Lync2013 
Frontend servers.

Until now I used l4xnat NAT for all protocoll types and it worked fine. The 
problem is that I am not able to see the incoming client IP-address.


So I switched to l4xnat farm with DNAT and all protocolls with the following 
network setup:


Client NET: 10.53.1.x

ZenLoadbalancer VIP for Client access: 10.100.1.205

ZenLoadbalancer IP Backend network: 10.101.8.1

Backend Servers network: 10.101.8.x GW 10.101.8.1


Zenloadbalancer Cluster IP eth0:1 10.100.1.204

Table interfaces:
Name    Addr




eth0    10.100.1.206



        Physical IP Node1

eth0:1          10.100.1.204



        Cluster IP

eth1    10.100.1.205



        VIP Service









eth2    10.101.8.1



All network traffic for the backend network (10.101.8.x) is routed via the core 
routers through the Cluster IP of the Zenloadbalancer (10.100.1.204)


Now my problem: When I try to access the service I see mostly pending 
connections, some established connections. The service is not usable. If I 
switch back to NAT everything is working.

I think there may be a routing problem...


Is this setup okay? How can I trace the reason for pending connections?


Thank you for your help


best regards


Christian
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