I am trying to isolate the packets used to communicate a switch's configuration changes. More specifically, whenever I use the online tool on my laptop and configure the switch (and hit save) I want to be able to see the packets that have been sent to the switch in order to envoke this change.

In my tests using Wireshark I have found that only UDP packets had been sent from laptop to switch.

Is this normal? I would have thought this process used a connection orientated protocol.

  • Without knowing what kind of switch or online tool, we can't say for sure. Please edit your question to provide more detail.
    – Ron Trunk
    Mar 15, 2020 at 20:12
  • SNMP (simple network management protocol) uses udp ports 161 and 162 by default. But that’s just a guess because you did not include your wireshark data. Mar 15, 2020 at 22:00

1 Answer 1


When I manage a switch. I use ssh or older switches telnet. And else http or https. But this is very basic. SNMP is also possible.

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