Transcript Skype for Business Trivia Test your Skype for Business knowledge with questions created by MVPs and enjoy the trivia fun tonight with.

Skype for Business Trivia
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!**
*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.
Microsoft Ignite #Skype4BTrivia
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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
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Managed versus unmanaged
 The internet
 MPLS cloud
 Cheap(er)
 QoS option
 Send and forget
 Traffic classes
 No control
 (More) expensive
 Gradual to full control
Network conditions
Optimal
Acceptable
Poor
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
Network conditions
Good
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)
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Prepare
Educate
Implement
Verify
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http://www.microsoft.com/en-us/download/details.aspx?id=10933
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http://www.microsoft.com/en-us/download/details.aspx?id=39084
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http://www.microsoft.com/en-us/download/details.aspx?id=36494
Implement - QoS Visualized
Audio
Traffic
Audio
DSCP 46 - Queue
Video
Traffic
Video
DSCP 34 - Queue
Other
Lync
Traffic
Signalling
App Sharing
File Transfer
Unmarked- Queue
Total Available
Bandwidth
Microsoft Confidential
Implement - Network QoS Strategies
DSCP
•GPO to mark traffic from
OCS / Lync
•Trust DSCP marking from
distribution layer
•Must overcome 3rd 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 3rd party
application randomly
chooses the defined port
range, and is prioritized
DSCP + Port
Protocol Based
IP Based
•Mark DSCP using policies
•Restrict port range by GPO
•Check DSCP and Port are
correct.
•A 3rd Party application
randomly using the specific
port range won’t be
marking with DSCP
•A 3rd party marking DSCP
won’t be using our Port
range
•Re-mark based on protocol
(SRTP) at WAN Ingress
•Requires Network
Equipment to support deep
packet inspection at Line
Speed.
•Re-Mark based on SRC or
DST IP addresses
•Works for Centralized PSTN
and Conferencing traffic
(GNOC)
•Doesn’t work for Peer
traffic scenarios
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Implement - Network QoS - DiffServ
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Media Type
Per Hop Behavior
Queuing and Dropping
Notes:
Priority Queue
Low loss, low latency, low jitter, assured bandwidth
Pair with WAN Bandwidth Policies on constrained links
Audio
EF
Video
AF41
BW Queue + DSCP WRED
Class 4. Low drop priority.
Pair with WAN Bandwidth Policies on constrained links
SIP Signaling
CS3
BW Queue
Class 3.
Bandwidth allocation should be sufficient to avoid drops
App Sharing
AF21
BW Queue + DSCP WRED
Class 2. Low drop priority.
Pair with End User Policy Caps
File Transfer
AF11
BW Queue + DSCP WRED
Class 1. Low drop priority.
Pair with End User Policy Caps
Internal
Internal
AV MCU
CAS
CAA
Edge
Mediation Server
PSTN Gateway
Remote
Guest
Call Leg
MS_Endpoint
GW_Endpoint
AllStreams
PoorStreams
PoorStreamsRatio
ORLYMED0104
DELYGW01.contoso.com
142
49
35%
UKLYMED0108
UKLYGW01.contoso.com
140
42
30%
SILYMED0110
UKLYGW01.contoso.com
136
34
25%
DELYMED0111
UKLYGW01.contoso.com
206
51
25%
ORLYMED0103
DELYGW01.contoso.com
618
136
22%
CALYMED0301
JPLYGW01.contoso.com
4,279
880
21%
DKLYMED0112
JPLYGW01.contoso.com
1,431
275
19%
ORLYMED0102
JPLYGW01.contoso.com
2,514
473
19%
UKLYMED0109
UKLYGW01.contoso.com
236
44
19%
CALYMED0301
JPLYGW01.contoso.com
2,519
463
18%
CALYMED0107
UKLYGW01.contoso.com
622
109
18%
ORLYMED0105
JPLYGW01.contoso.com
4,339
605
14%
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http://www.microsoft.com/en-us/download/details.aspx?id=39084
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http://www.microsoft.com/en-us/download/details.aspx?id=41698
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http://www.microsoft.com/en-us/download/details.aspx?id=46916
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End-User Application
End-User Application
Focused NB APIs
Network Services Function
Network Focused NB APIs
Network Control & Management
Functions
SB APIs (Openflow)
Network Elements
Proactively automate
the diagnostics and
troubleshooting of
bad calls
Reduce the cost
of deploying QoS
and implementing
traffic engineering
IT agility and network
customization through
real-time, policy-based
configuration of
network resources
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.
http://myignite.microsoft.com