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[V18 SD WAN] Application routing does not work

guillaume bottollier

Hello,

I currently testing the SD WAN functionnalities, and one of the most interesting thing for me does not work in our LAB...

Let's imagine i have two wan links, one production, and one backup, configured in the wan link manager active/backup.

I don't want Streaming Application to be routed by the backup link, so i created this SDWAN policy

(heavy trafic includes the cathegory Streaming Application)

=> when the production link ADSL is disconnected,i have access to youtube (for example) through the backup link.

Youtube Video is correctly identified in the application list, and should not be routed through the backup link.. by it does !

Any ideas ?

 

 



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  • 0 in reply to LuCar Toni

    Thank you for your reply.

    LuCar Toni said:

    This feature works quite nicely. BTW: SAC cannot difference between Youtube Stream and Youtube Website, because actually it both uses the browser. It is more likely a Web Category, than a Application. There is still work needs to be done by the Web Category Stuff. Youtube Stream vs Youtube Website is just a small part. Take a look at CASB, and you will notice, there is a big difference between Teams Application, Skype Application, Skype Call, Skype Video etc. 

    Since YouTube is included in the Streaming category it gives the impression that it is supported. It is quite confusing to have a category of which some of the entries will work and some will not without knowing which.

    LuCar Toni said:

    The downside of Youtube is, it changes the IPs, and the source Ports a lot. So as online help tells, SD-WAN tracks down the port (Source / Destination), IP (Source / Destination) and tries to figure out, which Application it could be. As written, the first connection cannot be used, because it is not fast enough. Next Session could be routed. But if you refresh the Stream, you properly get new Connection information, therefore Stream information from the first connection will not be applied.  

    For services like YouTube that share "customer interaction" and streaming, but where the bulk of the traffic would be streaming, wouldn't it make sense to treat all components as streaming? After all, specifically for streaming it's usually about bandwidth and QoS.

  • 0 in reply to LuCar Toni

    Why Sdwan routing by Web Cathegories has not been implemented ?

    it would solve the biggest part of the problem !

  • 0 in reply to guillaume bottollier

    I assume, this is not quite easy to implement. 

    As mentioned earlier, SAC can actually use the data sent by the Endpoint. 

    Proxy has to use data coming in real time to decide, which data it actually is. 

    PS: i do not know the reason for sure, i just try to help understand, what could lead to this issue right now. But there is more work to be done for the future. 

  • 0 in reply to LuCar Toni

    I figured it would be possible to tweak the Application Settings, but that doesn't seem to be an option.

    Is it not possible to create custom rules/FQDNs for SD-WAN routing?