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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

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

Sun, 07 May 2023 19:30

Alois Zoitl

Messages: 1585
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

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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]

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