Re: Multicast

Steve,

Good to know.  I recently ran into trouble with Wireshark as well, and was really confused about what I was seeing.  I was trying to monitor packets going in/out of an Ubuntu VM.  One day, everything was working properly.  A few days later, it was only capturing one side of the UDP connections.

If I need to capture again, I'll be sure to restart Wireshark after starting everything.  I thought I had tried doing that, but maybe I was just trying it after launching the VM.

-Tom


On Jul 27, 2016, at 12:48 PM, Steve Trigero seecwriter-/[email protected] [rabbit-semi] wrote:

> Well, it turns out to be a wireshark issue. This latest version of wireshark is not as user friendly as it used to be.
> 
> So check this out. I have an RM3900 setup to send a UDP datagram every 500ms to either a Multicast IP or to a
> Broadcast IP. I send a command to the Rabbit telling it which protocol to use.
> 
> I set the Rabbit to use broadcast then start wireshark. It captures all the broadcast traffic. I tell the Rabbit to switch
> to using Multicast and wireshark goes silent. I close wireshark and reopen it. Presto! The multicast datagrams show
> up in the capture. Switch back to sending broadcasts. Wireshark goes silent again. Close and reopen, and theystart
> showing up again.
> 
> So the Rabbit appears to be working, wireshark not so much.
> 
> Steve