Lync 2013 dual homed collocated Mediation server – the solution

This blog post is all about how to go about setting up a collocated Lync Server Mediation server with separate NIC’s for Primary (or Lync if you will) and PSTN traffic. I wrote it due to the fact that I find this setup poorly documented, and hopefully others will escape the pitfalls that I encountered by reading it.

If you stumbled upon this post directly you might also find the previous one describing the problem in more detail interesting. If not, or if you are more into just fixing problems, then please keep reading.

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Lync 2013 dual homed collocated Mediation server – the problem

First of all apologies for the rather long title, but I felt the need to state the full scenario in one sentence.

I have been struggling a little with this scenario for a while, and although it is briefly described as a supported and “no-brainer” setup in the TechNet documentation you come across it proved much harder than I first anticipated when recommending this design for a small sized customer. It also struck me, in regards to the previous reference to TechNet, how poorly documented this actually is – and inspired me to shed a little light to this dark corner of Lync Server installation.

As this post, as usual, turned out to be longer than I wanted it to be I decided to break it into two: This one being sort of the background or explanation, the next one will elaborate on the how-to’s.

Happy reading!