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Emerging Member
Posts: 108
Registered: ‎07-09-2016
Kudos: 35
Solutions: 4

Re: Multicast, Sonos, Phorus & Play-Fi Broadcast 255.255.255.255:<port> Discovery Solution

 


@ear9mrn wrote

Example of tcpdump  (tcpdump -i eth1 host 192.168.1.134) from my iPhone when running youtube
07:51:48.048955 IP 192.168.1.134.mdns > 224.0.0.251.mdns: 0 [2q] PTR (QM)? _googlecast._tcp.local. PTR (QM)? _0354A290._sub._googlecast._tcp.local. (61)
07:51:51.060785 IP 192.168.1.134.mdns > 224.0.0.251.mdns: 0 [2q] PTR (QM)? _googlecast._tcp.local. PTR (QM)? _0354A290._sub._googlecast._tcp.local. (61)
07:51:52.483621 IP 192.168.1.134.51017 > 239.255.255.250.1900: UDP, length 125
07:51:52.593257 IP 192.168.1.134.51017 > 239.255.255.250.1900: UDP, length 125
07:51:52.695932 IP 192.168.1.134.51017 > 239.255.255.250.1900: UDP, length 125

but when it run tcpdump -i eth2  (on eth2) I do not see those broadcast packets suggesting the they are not being relayed, is my thinking correct?

 


 

Hi Pete,

 

Those are multicast and not broadcast packets, that's why it's not working.

Did you try the mdns repeater service?

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New Member
Posts: 13
Registered: 3 weeks ago

Re: Multicast, Sonos, Phorus & Play-Fi Broadcast 255.255.255.255:<port> Discovery Solution

 

Great suggestion, another step closer....thanks for the pointer.

 

This is what I have now. I had it enabled but the innterface options were empty so I added my two. This correct?

 

"mdns": {
                "reflector": "''",
                        "repeater": {
                                "interface": [
                                        "eth1",
                                        "eth2"
                                ]
                        }
                },

I know see those multicast packets on both subnets when broadcast but Plex and Youtube are still do not decting my TV???  

 

Any other suggestions?

 

Thanks,

 

Pete.

 

 

Emerging Member
Posts: 108
Registered: ‎07-09-2016
Kudos: 35
Solutions: 4

Re: Multicast, Sonos, Phorus & Play-Fi Broadcast 255.255.255.255:<port> Discovery Solution

Are firewall rules blocking the answer from LAN2? To the EdgeRouter's firewall, those packets appear to be new/initial packets and are thus not caught by the 'established, related' rule.
New Member
Posts: 13
Registered: 3 weeks ago

Re: Multicast, Sonos, Phorus & Play-Fi Broadcast 255.255.255.255:<port> Discovery Solution

 

 

I gave up.... Wasted way to much time on this. disabled the LAN2 port and network and subnet and hooked my second US-8 switch to the first and now everything is on the same subnet and everything works.

 

Pete.

Emerging Member
Posts: 108
Registered: ‎07-09-2016
Kudos: 35
Solutions: 4

Re: Multicast, Sonos, Phorus & Play-Fi Broadcast 255.255.255.255:<port> Discovery Solution

I know this is a tad bit late, but could it be that there is more than one router in your network and that the EdgeRouter is not the TV's default gateway?

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