HP Network Optimizer SDN Application - Microsoft Lync 1.0 Administrator Guide

Figure 1 Service flow interaction of a Lync call
The service flow is as follows:
1. Administrator defines DSCP policy for each type of Lync service (voice, video, and application
sharing) through the Net Optimizer - Lync.
2. Net Optimizer - Lync deploys application control traffic rules to all edge switches with users
eligible for this application. The control rule ensures high-priority communication between Lync
clients and Lync SDN Managers.
3. Lync client A, the caller, initiates a Lync voice call. Client A sends a Lync dialog setup request
to the edge switch. Based on the application control rule, the edge switch forwards the request
to the Lync SDN Manager with high priority.
4. Lync SDN Manager returns the Lync dialog client’s setup to client A as well as client B via
edge switch.
5. Lync SDN Manager sends a Lync start dialog to Net Optimizer - Lync through the Microsoft
SDN API.
6. Net Optimizer - Lync deploys QoS rules on the access switch of dialog endpoint clients.
7. Now the voice traffic is upgraded to high-priority. The switches transfer the voice traffic for
the call with Best effort.
8. Lync SDN Manager sends a Lync update dialog to the Net Optimizer - Lync through the
Microsoft SDN API.
9. Net Optimizer - Lync updates QoS rules on the edge switch of dialog endpoint clients.
10. Lync SDN Manager sends a dialog end message to the Net Optimizer - Lync through the
Microsoft SDN API.
Switch flow interaction 7