Troubleshooting swx-top

1. If the swx-top "Status" is showing that there is a "Connection error:"

   1. Check that the cloudSwXtch is started.

   2. Check that you entered the proper cloudSwXtch name or IP when running the swx-top command, if necessary.

   3. If the name does not work when running the swx-top command, then the DNS is not set up correctly; use the IP address instead.

2. If an xNIC was installed but is not showing up in swx-top:

   1. Navigate to the swxtch-nic.conf file and validate that the "SwxtchSvcAddr" is correct.

      • Windows can be found at "C:\Program Files\SwXtch.io\Swxtch-xNIC"

      • Linux can be found at "/var/opt/swxtch/swxtch-xnic.conf"

   2. Check that the firewall is open for the following ports:

      subnet	protocol	ports	vm
      ctrl-subnet	tcp	80	cloudSwXtch
      ctrl-subnet	udp	10800-10803	all
      data-subnet	udp	9999	all

3. If a multicast group is not showing up, then check that they have registered.

   • In Linux, run this command:

     Text

     ip maddress show

   • In Windows, run this command in PowerShell:

     netsh.exe interface ipv4 show joins

   • If the joins are not showing here, then the application is not joining the multicast group. In this case, run swxtch-perf for the same IP:Port combination and then re-try in the program.

   • If the joins are not showing here, then the application is not joining the multicast group. In this case, run swxtch-perf for the same IP:Port combination and then re-try in the program.

   • If using Windows, make use of Task Manager and view Performance to know where data is being sent/received.

   • Validate using TCPdump or Wireshark to identify where traffic is going, as it could be going to the wrong network interface; it should be going to the Data Interface if xNIC2 and swx0 if xNIC is Type 1 or 3. An example is below:

$ sudo tcpdump udp -X -i <interface>

• Validate that a firewall is not stopping the multicast and open up the firewall to include port exceptions.