Lync, OCS, Skype for Business Persistent Chat requires port 8011. Missing from Documentation

 

Howdy Lync persons. Today I ran across an issue where Skype for Business Persistent chat errors were shutting the service off. the errors were:

Event 53517 Activating system shutdown. Active cluster { 1 } does not contain the current server <3> <net.tcp://FQDNofInternalServices:8011/MGC/PeerService>.

Event 53515 Server received error while subscribing to peer.

 

These errors show a failure on port 8011. But if you check the Lync 2010 and 2013 documentation, you will find all references of port 8011 missing. Even Skype for Business Port list does not show port 8011.

I thought I would provide the places where you can find documentation for these ports; on OCS 2007 and an article in Skype for Business 2015.

I found it in the SKYPE for business documentation below: 

https://technet.microsoft.com/en-us/library/gg398500.aspx

and for OCS;

https://technet.microsoft.com/en-us/library/gg398345(v=ocs.14).aspx

There are other places to find reference to these ports, but If you need a quick reference to show an network team that this port needs to be open, feel free to link to this article.

TO the network folks: Yes please open port 8011 as the persistent chat Administration depends upon this port.

 

Thank you

Louis

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