Hi,

can we do DNS load balancing for LYNC 2010 Mediation role either for inbound traffic or for outbound traffic or for both?

Thanks

You can, if the gateway or SBC supports it. 

For outbound, DNS load balancing of the mediation pool won't matter.  For inbound, if it's supported by gateway you could do this, or you could simply provide all the addresses of the mediation servers.

Hi

If the Gateway supports DNS LB, then it can act as a load balancer for one pool of Mediation Servers, and thereby to load-balance calls across the pool.

Best regards

Allan