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+--- Thread: Logicmachine filtering (/showthread.php?tid=4015)
Logicmachine filtering - asgeirsb - 25.04.2022
Hello!
I have IP as backbone and I have 4 logicmachines in 4 floors. I have 2-3 TP lines behind every Logicmachine.
But I have some trouble with filtering and routing between the logicmachines for global group addresses. Can anyone help me and guide me through how to set up the correct parameters for my setup to be able to write from one "main" logicmachine and the other 3 will listen to this logicmachine. Its about 10 global addresses I want all logicmachines to listen to, and theres also about 10 addresses that are unique to each floor, but will be written from the "main" logicmachine.
So far I have access to all logicmachines from the IP network and all LM's have "ack all group telegrams" enabled, "IP > Loc Filter" enabled on all LM's for all addresses except on the "main" LM which have "Loc > IP filter" enabled on all addresses which are global.
Here you can see my settings in KNX connections. Should the filter be enabled here as well? For me it makes no difference to enable it or not.
RE: Logicmachine filtering - admin - 25.04.2022
You might need to enable "Filter local update telegrams" in Local > Ip filter. Otherwise only telegrams originating from TP are filtered but outgoing telegrams sent by LM itself are not.
RE: Logicmachine filtering - asgeirsb - 26.04.2022
Ok, should I also add any group addresses in the filter?
RE: Logicmachine filtering - Daniel - 26.04.2022
The ones you want to be let trough.
RE: Logicmachine filtering - asgeirsb - 26.04.2022
Perhaps it is a firewall issue? What ports should I let IT department know LM uses for multicast? UDP or TCP?
RE: Logicmachine filtering - Daniel - 26.04.2022
UDP 3671
RE: Logicmachine filtering - Daniel - 26.04.2022
I would recommend you to disable all filters and see if you have communication. By default LM accepts all. Once you got it working you can add filters as needed.
RE: Logicmachine filtering - asgeirsb - 26.04.2022
Like this for both IP > local and Local > IP for alle four LM's?
RE: Logicmachine filtering - Daniel - 26.04.2022
Yes now filter is disabled and it should be for both. Drop a screenshot from general tab.
RE: Logicmachine filtering - asgeirsb - 26.04.2022
Same for all four LM's except KNX address ofcourse. Whats the purpose of "ACK all group telegrams"? It greatly reduced traffic on the LM when activated. Should I deactivate it once I get filtering working properly?
RE: Logicmachine filtering - Daniel - 26.04.2022
Ack is needed when you have a device which is not sending acknowledge. Usually this are other KNX monitoring devices like LM. Standard KNX device should send ack. In normal installation it is not needed. Without ack telegrams are repeated.
RE: Logicmachine filtering - asgeirsb - 26.04.2022
Ok.
For now it seems the problem is in the firewall. All filtering is disabled and when I send a telegram from one of the LMs it is only snapped up by the LM on the same floor, the other floors does not recieve it.
But I have full access to all web interfaces on all LM's. Seems to me multicast is not enabled in firewall perhaps?
RE: Logicmachine filtering - admin - 26.04.2022
You might need to increase the Multicast TTL number depending on the network setup.
RE: Logicmachine filtering - asgeirsb - 27.04.2022
Thanks for the help. Its solved. Multicast was not properly set up by IT.
RE: Logicmachine filtering - asgeirsb - 11.05.2022
I have a new issue I'm struggeling with.
When I have filtering on I cannot use the Logicmachine as interface. Without filtering I can use whatever interface I want. This is not how I want it to be. Can I set up my logicmachines so I dont have to turn off filtering when using it as interface to program in ETS?
The only adresses I let through in filtering are global group adresses to writes to components under every Logicmachine.
RE: Logicmachine filtering - Daniel - 11.05.2022
Disable option 'Apply filter to tunneling' it is not really needed
RE: Logicmachine filtering - asgeirsb - 12.05.2022
If I disable filtering all 4 Logicmachines will be flooded with telegrams, the bus traffic goes up to 100% on all 4 LM's.
RE: Logicmachine filtering - Daniel - 12.05.2022
LMs talk to each other via multicast not tunneling.
RE: Logicmachine filtering - asgeirsb - 12.05.2022
Yeah I know but when I activated filtering I couldnt use it as interface anymore? Any ideas?
RE: Logicmachine filtering - Daniel - 12.05.2022
Disable this