Segger J-Link - Page 131

J-Link / J-Trace (UM08001) © 2004-2017 SEGGER Microcontroller GmbH & Co. KG
131
Troubleshooting
To test whether a connection to the tunnel server can be established or not a network
protocol analyzer like Wireshark can help.
The network transfer of a successful connection should look like:
Problem Solution
Remote server cannot connect to tunnel
server.
1. Make sure the Remote server is not
blocked by any firewall.
2. Make sure port 19020 is not blocked
by any firewall.
3. Contact network admin.
J-Link Commander cannot connect to
tunnel server.
1. Make sure Remote server is started
correctly.
2. Make sure the entered serial number is
correct.
3. Make sure port 19020 is not blocked
by any firewall. Contact network admin.
Table 3.13: