Can't Airplay to Roku After Putting in Untrusted IoT

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DanS

• September 06, 2023 18:59

I have Trusted, Untrusted IoT, and Guest WiFi VLANs.   I allow traffic from Trusted to Untrusted IoT but block traffic vice versa.  I assume if traffic originates on Trusted going to Untrusted IoT then replies will be accepted from Untrusted IoT to Trusted however Airplay from my iPhone on Trusted does not connect to Roku after moving it from Trusted to Untrusted IoT.   What am I missing?

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  Michael Bierman

  • November 02, 2023 19:24

  Do you have mDNS turned on for each networks segment? 

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  DanS

  • November 02, 2023 21:13

  Not sure what that is or how to turn it on…

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  Michael Bierman

  • November 03, 2023 03:22

  Go to Settings > Advanced > Configurations > mDNS Reflector 

  Multicast DNS (mDNS) is a protocol that simplifies local network service discovery by eliminating the need for a central DNS server. Devices can resolve hostnames to IP addresses using the ".local" domain, and this protocol operates through multicast IP.
  
  mDNS works fine on a single network without any intervention. But, if you introduce network segmentation (VLANs or multiple LANs) it is not possible for devices to find each other (your iPhone can't find your Roku to AirPlay). mDNS Reflector allows devices to find each other across local networks by broadcasting queries and receiving responses from matching devices. 

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  DanS

  • November 09, 2023 13:26

  It’s enabled by default. So problem remains. Will contact Support. 🙏

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  Firewalla

  • November 09, 2023 17:30

  In the next release 1.60, you will have "SSDP Relay" which will likely solve the multicast issue.

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  DanS

  • November 09, 2023 18:00

  Thanks for the info!

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