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restoring missing troubleshooting section

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jaimeo
2019-05-14 16:02:51 -07:00
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windows/deployment/update/waas-delivery-optimization.md
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@ -5,9 +5,9 @@ keywords: oms, operations management suite, wdav, updates, downloads, log analyt
ms.prod: w10 ms.prod: w10
ms.mktglfcycl: deploy ms.mktglfcycl: deploy
ms.sitesec: library ms.sitesec: library
author: greg-lindsay author: jaimeo
ms.localizationpriority: medium ms.localizationpriority: medium
ms.author: greglin ms.author: jaimeo
ms.collection: M365-modern-desktop ms.collection: M365-modern-desktop
ms.topic: article ms.topic: article
--- ---
@ -110,8 +110,40 @@ For the payloads (optional):
**Does Delivery Optimization use multicast?**: No. It relies on the cloud service for peer discovery, resulting in a list of peers and their IP addresses. Client devices then connect to their peers to obtain download files over TCP/IP. **Does Delivery Optimization use multicast?**: No. It relies on the cloud service for peer discovery, resulting in a list of peers and their IP addresses. Client devices then connect to their peers to obtain download files over TCP/IP.
[//]: # (**What data does Delivery Optimization send to the service?**) ## Troubleshooting
[//]: # (??????????????? I'm not sure we can avoid sharing this, per GDPR guidelines)
This section summarizes common problems and some solutions to try.
### If you don't see any bytes from peers
If you don’t see any bytes coming from peers the cause might be one of the following issues:
- Clients aren’t able to reach the Delivery Optimization cloud services.
- The cloud service doesn’t see other peers on the network.
- Clients aren’t able to connect to peers that are offered back from the cloud service.
### Clients aren't able to reach the Delivery Optimization cloud services.
To fix this issue, try the following steps:
1. Start a download of an app that is larger than 50 MB from the Store (for example Candy Crush Saga).
2. Run `Get-DeliveryOptimizationStatus` from an elevated window and share the output (by setting the `DownloadMode` field to **1**).
### The cloud service doesn't see other peers on the network.
If you suspect this is the problem, try these steps:
1. Download the same app on another device on the same network.
2. Run `Get-DeliveryOptimizationPerfSnap` from an elevated window (the `NumberOfPeers` field should be non-zero).
### Clients aren't able to connect to peers offered by the cloud service
If you suspect this is the problem, un a Telnet test between two devices on the network to ensure they can connect using port 7680. To do this, follow these steps:
1. Install Telnet by running **dism /online /Enable-Feature /FeatureName:TelnetClient** from an elevated command prompt.
2. Run the test. For example, if you are on device with IP 192.168.8.12 and you are trying to test the connection to 192.168.9.17 run **telnet 192.168.9.17 7680** (the syntax is *telnet [destination IP] [port]*. You will either see a connection error or a blinking cursor like this /_. The blinking cursor means success.