1. The Annual Microsoft P2P Roundup Aka – Microsoft finally gets it 
Phil Wilcock
Co-Founder
2Pint Software
Andreas Hammarskjold
Co-Founder
2Pint Software

2. Agenda A brief history of P2P Current state of play
BranchCache Bob
DO Doris
Peer Cache Pete
Which P2P to use and when?
Optimizing/Troubleshooting/Gotchas
Q & A

3. WHY P2P? Microsoft NEEDS you to get using P2P
Without it – the Interwebs will break!
It makes you look good
EVERYTHING moves faster
Just do it..

4. A brief history of Microsoft p2p
Early version was built into BITS (still in the GPO)
BranchCache – 2009
BranchCache V2 – 2012
DO Company – purchased in 2014
DO in Windows 10 since RTM
Peer Cache…

5. Introducing the peer-to-peer folks
BranchCache Bob
Delivery Optimization Doris
PeerCache Pete

6. Branchcache bob
P2P Infantryman – dependable, experienced

7. User #1 downloads a file User #2 gets a copy What is BranchCache?
Source
Download
P2P
User #1 downloads a file
User #2 gets a copy

8. It’s not just P2P… It’s a WAN Accelerator!
+ LEDBAT and you get bandwidth management for free!
It’s not just P2P… It’s a WAN Accelerator!
Faster
Bigger
Puh!

9. BranchCache is supported where?
ALWAYS in BITS
Windows Enterprise SKU’s
Browsers (Edge & IE)
Any wininet & winhttp (.dll)
SMB = Explorer, xcopy etc.
How about a hot cup of local content?
BranchCache is everywhere

10. So Why is BranchCache in my Soup?
So opening a Word document will be faster? Answer: Yes!
So copying a file in Explorer over the network will be faster?
Answer: Yes!
So all ConfigMgr stuff will go faster?
Answer: Yes!
My own App?
Answer: Yes!
So Why is BranchCache in my Soup? IE
HTTP
Microsoft BranchCache™ Platform
SMB 2
Explorer
3rd Party Protocols
3rd Party Applications
CopyFile
Office
WMP
Intune
BITS
SCCM
WSUS
My batch file to copy stuff will be faster?
Answer: Yes!
So my SharePoint Intranet will be faster?
Answer: Yes!
WSUS, Intune… you name it! #BCISKING!

11. D.O. doris If you are on Windows 10; You got Doris!
It’s a bit torrent style peer-to-peer protocol
Client/Server Components (Currently a Cloud Svc)
Based on hashes
Replacement for BITS & BranchCache long term

12. What makes DO unique? Cloud-managed: designed for the cloud era
6/23/2018 3:38 AM
Cloud-managed: designed for the cloud era
Supported Platforms
Windows Desktop SKUs – since (TH2)
Xbox (UWPs)
Server Core / Nano – since 1710 (RS3)
More SKUs coming soon
Distributed cache: each device contributes a little for the common goal of reducing the amount of Internet bandwidth needed to keep devices up-to-date
Multitasking: downloading from multiple sources
Hybrid: downloads from http and peer sources in parallel
Fast and Furious: DO downloads are faster and more reliable
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. How does it work? Step 1: Publishing Supported Content
Signed content is chunked and hashed
Supported Content
Windows OS (security, quality and feature updates)
Windows Store Apps (and App updates)
Drivers
Defender updates

14. How does it work? Windows Update Content Servers 2 Step 2: Download
Client A checks for updates
Client A asks Windows Update service for download sources
Service provides Windows Update content server D and clients B and C
Client A requests specific small pieces from D and clients B, C
Source B, C, D fulfill the download request
Client A checks the hash of each piece, discard pieces where hashes don’t match
Client A checks the hash of the entire file before installing D 1 2 5 3 4 B A 5 5 C

15. How does it work? Windows Update & DO Services 1 1 2 C A B
6/23/2018 3:38 AM
Step 3: Caching (ready to upload / uploading)
Windows Update &
DO Services
Clients “talk” to the DO service as long as files are still in the cache 1 1 2
How does it work? C A B
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

16. Policies available for IT administrators:
MS Story
6/23/2018 3:38 AM
Policies available for IT administrators:
Group PCs by location (default is based on NAT external IP)
Control bandwidth limits
Configure cache size
Starting with Windows , used by default in all Windows Update and Windows Store downloads
Superset of configuration options available in Settings app
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

17. Group Settings Explained
Mode
P2P
P2P Logical Boundary No
N/A 1
Yes, native
External NAT 2
Same group ID ((AD Sites then Domain) or GUID) across NAT 3
None 99
100
Yes, BITS & BC
Subnet

18. Admin configuration example 1
6/23/2018
Admin configuration example 1
Local Network Default
Configuration (default):
Download Mode = 1 (Same NAT )
\\ACMECORP
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

19. Admin configuration example 2
6/23/2018
Local Network + Domain joined
Configuration:
Download Mode = 2 (Local + Domain)
\\ACMECORP
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

20. Admin configuration example 3
6/23/2018
Admin configuration example 3
Local Network + Arbitrary Group
Configuration:
Download Mode = 2 (Local + Domain)
Group ID = [some unique Guid]
\\ACMECORPUS
\\ACMECORPUK
Note: since RS2, VPN clients do not participate in peer groups by default
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

21. Use PS cmdlets to view activity locally

22. Use 2Pint Software StifleR in free ”Report mode”
Other
DEMO

23. Peer cache pete ConfigMgr only solution Still Pre-release
Requires Boundary Group for each location
Otherwise it will P2P over WAN
Rebuild a Peer Cache source machine and the Content Map is invalid
Update Content and the old version is outdated
Difficult to uninstall
Uses BITS so will be superseded by DO Doris
Luckily has big brother Bob for backup 

24. Main reason to not use Peer Cache
Client 1 (PC Source) gets content
Client 2 (Not a PC Source) gets content
Client 1 gets powered off
Client 3 has to go back to the DP – EVEN THOUGH CLIENT 2 HAS IT
So basically – it’s not really true P2P..

25. Which p2p tech to us and when
ConfigMgr Peer Cache – Do not use – Pre-Release
BranchCache/BITS
Win 7
Certain network/domain scenarios
Delivery Optimization
Windows 10 Store, WU, WSUS
More coming! – ConfigMgr, Intune, O365

26. Optimizing Branchcache

27. START SMALL
Play – Have Fun!
One Server
Two Networks
Three Clients
Start There
Learn
NOT ALL AT ONCE
Use “Run as soon as possible” like settings to spread the load. Alt. use some way of spreading it, third party or script
SHAKE & BAKE!
Make sure hashes are available before clients downloading or you will be very frustrated
Use Reporting to save your sanity
Get off Windows 7
If you are serious about BranchCache start by getting to Windows 10. But don’t forget you can use BranchCache in Windows 7 to help you there!
GO DEDUPE
Get De-Duplication on the source
DP’s if using ConfigMgr
Remember: DeDupe is BranchCache!

28. Optimizing DO Set them policies!
Consider using Group DownloadMode
Cache Age TTL – Increase from 3 day default
Default 4Gb Mem minimum for P2P – change if required
Minimum 100Mb content size – lower for more P2P
Systems with more power/larger HDD can be ‘weighted’ to download content first

29. Optimizing DO (2)
Which hostnames should I allow in my Firewall for Delivery Optimization to work?
DO Service::
*.do.dsp.mp.microsoft.com
 Payload:
*.download.windowsupdate.com
*.windowsupdate.com
*.dl.delivery.mp.microsoft.com
*.emdl.ws.microsoft.com

30. Optimizing Peer Cache
NO!

31. Informational Resources
2Pint Software BranchCache FAQ & Forums
Microsoft TechCommunity & TechNet Forums
2Pint Software Twitter:
@andhammarskjold
@phil2pint
@2pintsoftware

32. Cheers!
Please feel free to ask probing and highly complex questions at this point..