Video Offloading Overview and Best Practices - Best-Practice-Video-Offload-Overview/Video-Offloading-Overview-and-Best-Practices

The information in this document discusses how to offload large video files over Wi-Fi (5GHz) while maintaining an LTE connection to receive dispatch. The following topics are also addressed:

• Steer traffic destined to Video Offload Server (VOS) over WWAN connection
• Steer all other traffic to an LTE connection
• Install a return route on inside network router

NOTE: Post 6.5.3 Affinity (NCOS: WAN Affinity) is now Traffic Steering (NCOS: Traffic Steering). The following Cradlepoint routers support this practice:

• IBR1100
• IBR900
• IBR1700

Ensure the following is set up before applying these best practices:

• Tablet on Primary LAN 192.168.9.0/24
• Video Offload Server on Private LAN 10.0.0.0/24
• Internal Network with AP. (WWAN connect to network) 192.168.31.0/24
• NCOS Prior to 6.5.4 (Affinity rules will be used)
• NCOS greater than or equal to 6.5.4 (Traffic Steering rules will used)

In the following diagram, the client router will need affinity rules to bind traffic bound for the Video Offload Server to the Wi-Fi as WAN connection.

1. Create a Wi-fi as WAN connection. Refer to NCOS: 6.5 How to configure WiFi as WAN for more information.
2. In Connection Manager, Move WWAN above LTE/3G Multimode modems, so that WWAN is the Primary Connection. Refer to NCOS: 6.0 Connection Manager for more information.
3. Set both WWAN and modem to "always on." 
4. Set WAN Verify on both connections. Refer to NCOS: WAN Verify for more information.
5. Create a traffic steering rule binding traffic Destined to VOS to WWAN. Refer to NCOS: Traffic Steering for more information.
6. Create a traffic steering rule binding traffic Destined to VOS to LTE, and then select Negate.

The internal network will not have a route entry for the Client network.

To reply to ICMP add a route on the private network. Refer to NCOS: How to Configure Static Routes on a Cradlepoint Router for more information.
In the following diagram, on the Private router with LAN 192.168.31.1, a route to 192.168.9.0/24 will need the next hop to be 192.168.31.2.

 

If the Private Network Router is not a Cradlepoint, the stated route above may need to be added by the network administrator.