3. Test your Skype for Business knowledge with questions created by MVPs and enjoy the trivia fun tonight with complimentary food & drinks, and the chance to win great prizes! Tweet a photo from any Skype for Business session using the hashtag #Skype4BTrivia and be entered into a drawing to win a ticket to this invite- only Trivia game for you and a guest. One entry will be randomly selected each day.* If you don’t score an invite, you can still compete on Twitter with @SkypeBusiness Wednesday at 8:30pm for your chance to win a Surface Pro 3!** Skype for Business Trivia Microsoft Ignite #Skype4BTrivia *No purchase necessary. Open only to event attendees. Game ends 5/7/2015. See Skype for Business Facebook for full Official Rules. **No purchase necessary. Open only to legal residents of any country where Surface Pro 3 is certified for distribution. Game ends 5/7/2015. See Skype for Business Facebook for full Official Rules.

13. Jitter The amount of time the packets are delayed before processing to compensate for packets arriving later than other packets Gets added to the network latency Packet loss The amount of packages that never survived the trip from A to B, got malformed, or simply arrived outside of the jitter buffer Displayed in percentages Latency Time it takes the packet to get from A to B When talking about networks this is usually round trip time and noted as network latency

15. Managed versus unmanaged

16. Network conditionsOptimalAcceptablePoor Inter arrival packet jitter (average)≤ 5ms≤ 10ms> 10ms Inter arrival packet jitter (maximum)≤ 40ms≤ 80ms> 80ms Packet loss rate (average)≤ 1.0%≤ 5.0%> 5.0% Network latency one-way< 100ms≤ 100ms> 100ms

17. Network conditionsGood Inter arrival packet jitter (average)≤ 5ms Inter arrival packet jitter (maximum) ≤ 40ms Packet loss rate (average)0% approaching Network latency one way ≤ 100ms (should include checks on delay versus geographic distance)

20. PrepareImplementVerifyEducate

25. Implement - QoS Visualized Audio Video Audio Traffic Video Traffic Signalling App Sharing Total Available Bandwidth File Transfer Other Lync Traffic DSCP 46 - Queue DSCP 34 - Queue Unmarked- Queue

26. 26 Microsoft Confidential Implement - Network QoS Strategies DSCP GPO to mark traffic from OCS / Lync Trust DSCP marking from distribution layer Must overcome 3 rd Party applications re-marking their traffic with DSCP Must overcome rogue machines connecting to network and using priority queue overloading for DoS attack Port Based Re-Mark based on port at WAN Ingress point Restrict Media to 40 UDP ports Limited risk of network equipment upgrades Possible issue if 3 rd party application randomly chooses the defined port range, and is prioritized DSCP + Port Mark DSCP using policies Restrict port range by GPO Check DSCP and Port are correct. A 3 rd Party application randomly using the specific port range won’t be marking with DSCP A 3 rd party marking DSCP won’t be using our Port range Protocol Based Re-mark based on protocol (SRTP) at WAN Ingress Requires Network Equipment to support deep packet inspection at Line Speed. IP Based Re-Mark based on SRC or DST IP addresses Works for Centralized PSTN and Conferencing traffic (GNOC) Doesn’t work for Peer traffic scenarios

27. Implement - Network QoS - DiffServ Media TypePer Hop BehaviorQueuing and DroppingNotes: AudioEFPriority QueueLow loss, low latency, low jitter, assured bandwidth Pair with WAN Bandwidth Policies on constrained links VideoAF41BW Queue + DSCP WREDClass 4. Low drop priority. Pair with WAN Bandwidth Policies on constrained links SIP SignalingCS3BW QueueClass 3. Bandwidth allocation should be sufficient to avoid drops App SharingAF21BW Queue + DSCP WREDClass 2. Low drop priority. Pair with End User Policy Caps File TransferAF11BW Queue + DSCP WREDClass 1. Low drop priority. Pair with End User Policy Caps

36. MS_EndpointGW_EndpointAllStreamsPoorStreamsPoorStreamsRatio ORLYMED0104DELYGW01.contoso.com1424935% UKLYMED0108UKLYGW01.contoso.com1404230% SILYMED0110UKLYGW01.contoso.com1363425% DELYMED0111UKLYGW01.contoso.com2065125% ORLYMED0103DELYGW01.contoso.com61813622% CALYMED0301JPLYGW01.contoso.com4,27988021% DKLYMED0112JPLYGW01.contoso.com1,43127519% ORLYMED0102JPLYGW01.contoso.com2,51447319% UKLYMED0109UKLYGW01.contoso.com2364419% CALYMED0301JPLYGW01.contoso.com2,51946318% CALYMED0107UKLYGW01.contoso.com62210918% ORLYMED0105JPLYGW01.contoso.com4,33960514%

44. Network Control & Management Functions Network Elements End-User Application Focused NB APIs Network Services Function Network Focused NB APIs End-User Application SB APIs (Openflow)

46. Offer uninterrupted Lync on mobile devices. Comprehensive view of Lync sessions, trends, and server infrastructure Gain in-depth visibility into application and network response times. Dynamically automate policy deployment. Gain unique real-time insight into issues that impact Lync performance.