Eclipse Community Forums: 4DIAC - Framework for Distributed Industrial Automation and Control

Home » Eclipse Projects » 4DIAC - Framework for Distributed Industrial Automation and Control » BBB doesn't receive multicast address

Show: Today's Messages :: Show Polls :: Message Navigator

BBB doesn't receive multicast address [message #1859025]

Sun, 07 May 2023 10:33

Nicolò Sciara

Messages: 7
Registered: January 2023

Junior Member

Good morning at all,

I'm trying to do the step 3 with my BeagleBone Black connected to the pc using the usb ethernet connection. My PC OS Linux Ubuntu) is connected to my modem with a wifi connection and both can ping 8.8.8.8 correctly.

I try to repeat the step 3 of the tutorial but it doesn't work on my BBB. if i do it with my Raspberry PI 3 connected directly to the modem via ethernet it works fine. when i use wireshark i can see that my PC is sending packets to 239.0.0.1 but 239.0.0.1 doesn't send any packet back to me.

Could you please help me to solve the problem?

Thanks

Nicolò

Report message to a moderator

Re: BBB doesn't receive multicast address [message #1859028 is a reply to message #1859025]

Sun, 07 May 2023 19:30

Alois Zoitl

Messages: 1639
Registered: January 2014

Senior Member

Hi Nicolò,

on a default BBB multicast communication is not always correctly configured. In our bbb traffic control example there is a section on configuring the network setup : https://www.eclipse.org/4diac/en_help.php?helppage=html/examples/bbbTraficControl.html
Have you tried that?

Cheers,
Alois

Report message to a moderator

Re: BBB doesn't receive multicast address [message #1859029 is a reply to message #1859028]

Sun, 07 May 2023 21:10

Nicolò Sciara

Messages: 7
Registered: January 2023

Junior Member

Good evening Prof. Zoitl,

Thanks for the answer. I'm using Linux Ubuntu and i'm a new user so i don't know how to do some stuff that could be simple to a more experienced user.
Could you please help me writing me how to solve the problem?

Here below i post the ip route command output from my computer. enxf6ffffffffff is the interface that is connected to the BBB and wlo1 is the wifi connection to my modem.

nick@NicPc:~$ ip route
default via 192.168.1.1 dev wlo1 proto dhcp metric 600
169.254.0.0/16 dev enxf6ffffffffff scope link metric 1000
192.168.1.0/24 dev wlo1 proto kernel scope link src 192.168.1.7 metric 600
192.168.7.0/30 dev enxf6ffffffffff proto kernel scope link src 192.168.7.1

below i leave the result of ifconfig

nick@NicPc:~$ ifconfig
eno1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether c4:65:16:9c:b0:b6 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enxf6ffffffffff: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.7.1 netmask 255.255.255.252 broadcast 192.168.7.3
ether f6:ff:ff:ff:ff:ff txqueuelen 1000 (Ethernet)
RX packets 7710 bytes 8621950 (8.6 MB)
RX errors 2 dropped 0 overruns 0 frame 2
TX packets 5685 bytes 736377 (736.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Loopback locale)
RX packets 3653 bytes 438444 (438.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3653 bytes 438444 (438.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.7 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::69e8:d334:746f:1f4a prefixlen 64 scopeid 0x20<link>
ether 10:5b:ad:7e:5b:ab txqueuelen 1000 (Ethernet)
RX packets 23259 bytes 18167683 (18.1 MB)
RX errors 0 dropped 4 overruns 0 frame 0
TX packets 14080 bytes 2568561 (2.5 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Best regards,

Nicolò

[Updated on: Sun, 07 May 2023 21:19]

Report message to a moderator

Previous Topic:	Can't execute the function block i create
Next Topic:	OPC UA with freeRTOS LWIP

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Sun Jan 26 08:50:44 GMT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter