Our Community Forums will be closing on June 27, 2024. Please visit att.com/support for all your support needs.
kurtk9's profile



12 Messages

Monday, May 13th, 2019 3:28 AM

UDP/TCP ports blocked between subnets using BGW210 and pass-through router? Airplay not working...

I have 1 Gbps U-Verse and a relatively new Arris BGW210-700 residential gateway I got after upgrading from a Pace that's setup on the 192.168.1.x subnet.  I also have an ASUS router setup as a passthrough that I'm using on the 192.168.50.x subnet.  Everything is running well in terms of internet access, but I recently had an Ethernet cable go bad that's not replaceable.   My Denon receiver that was connected to the Asus router (it doesn't have Wifi) now has to be connected to the BGW210.  This works in general, but I'm no longer able to use Apple Airplay since my devices and the receiver reside on different subnets.  My question is:  Is there some way to see if there are any blocked ports between my phone connected to the Asus router and the Denon connected to the BGW210?


A little more information.  I know that Bonjour doesn't work across subnets, so I used a Raspberry Pi as my Bonjour bridge.  The Pi is connected via Ethernet to the the BGW210 and via Wifi to the Asus router.  I installed the Avahi Daemon and set it as a reflector to allow the devices on each subnet to see one another.  All this actually works just fine and I see my Denon receiver from my phone.  However, when I try to play any music it eventually times out and doesn't work.  For future reference, this worked just fine for me (to the point Bonjour appears to work):  https://hayd.io/create-a-bonjour-bridge-using-avahi-and-ubuntu-server/


I'm wondering how I ensure the gateway is allowing UDP/TCP packets from my phone (on the 192.168.50.x subnet) to pass to the receiver (on the subnet.  Since I can see the receiver as an Airplay device, I think the Bonjour side of things is working, but it appears Airplay itself is being blocked.  There are a number of UDP and TCP ports used by Airplay, how can I ensure that they're not being blocked?  How can I tell if they are?


Thanks for any help!

Community Support


232.9K Messages

5 years ago

Hi there @kurtk9


Thank you for reaching out! Based on the nature of your issue, we recommend getting in touch with the team at our paid service, ConnecTech for more thorough assistance.


If you need help with anything else, let us know!


Aminah, AT&T Community Specialist

Not finding what you're looking for?
New to AT&T Community?
New to the AT&T Community? Start by visiting the Community How-To.
New to the AT&T Community?
Visit the Community How-To.