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+--- Thread: Multicast issue (/showthread.php?tid=5523)
Multicast issue - balatis - 19.07.2024
Hello,
We are working on a project with 4 lines, 4 IP Routers and 1 LM.
When we configure LM with the following settings*(attached photo), the multicast connection is interrupted and the IP routers are not shown in ETS- KNX Connections. No filters are active.
Why this happens?
Thank you in advance.
RE: Multicast issue - Daniel - 19.07.2024
Can you try disabling Pass individual telegrams option and see if it is still happening?
RE: Multicast issue - balatis - 19.07.2024
(19.07.2024, 16:19)Daniel Wrote: Can you try disabling Pass individual telegrams option and see if it is still happening?
The problem still remains.
RE: Multicast issue - Erwin van der Zwart - 20.07.2024
Is the LM only connected to IP or also to a TP line?
RE: Multicast issue - balatis - 20.07.2024
(20.07.2024, 07:21)Erwin van der Zwart Wrote: Is the LM only connected to IP or also to a TP line?
Only connected to IP.
RE: Multicast issue - Erwin van der Zwart - 20.07.2024
Do you have a managed switch?
RE: Multicast issue - balatis - 20.07.2024
(20.07.2024, 08:29)Erwin van der Zwart Wrote: Do you have a managed switch?
No, the switch is unmanaged.
RE: Multicast issue - admin - 22.07.2024
Can you run Wireshark on your PC and provide traffic capture for both cases - when LM is connected or not?
Use this filter: _ws.col.protocol=="KNXnet/IP"
Export using File > Export Specified Packats, make sure that only [b]Displayed" packets are exported.
RE: Multicast issue - balatis - 27.07.2024
(22.07.2024, 08:33)admin Wrote: Can you run Wireshark on your PC and provide traffic capture for both cases - when LM is connected or not?
Use this filter: _ws.col.protocol=="KNXnet/IP"
Export using File > Export Specified Packats, make sure that only [b]Displayed" packets are exported.
OK, thank you for the response.
The project is far away, so we will try it when we are there.
RE: Multicast issue - JMemphix - 31.07.2024
Is there a preference between using Multicast and IP addressing? Could asked for both IP Routers, and again for LM5s.
RE: Multicast issue - admin - 31.07.2024
Tunneling allows only one-to-one connections while Routing (multicast) allows communication between multiple KNX/IP devices on the same network. If you have more than 2 KNX/IP devices then multicast must be used.
RE: Multicast issue - balatis - 07.09.2024
Hello!
The issue we had, has been solved.
The router, by default, didn't allow multicast communication. That was the reason.
Thank you for your time and responses.