Stop Extended Ping or Traceroute in Cisco Router: If you don’t want to continue extended ping up to repeated number of times or Traceroute up 30 hops, you can find below option to ‘escape sequence’ to stop a Cisco extended ping or traceroute is. One way actually works is holding CTRL + SHIFT then pressing the number 6 key twice. Returning to the Terminal Server from Cisco Router: To exit a Cisco device and return to the terminal server, hold CTRL + SHIFT then press 6. Release CTRL + SHIFT and press X.
The table below lists the characters that can appear in the Traceroute command output. Character Description nn msec For each node, the round-trip time in milliseconds for the specified number of probes * The probe timed out A Administratively prohibited (example, access-list) Q Source quench (destination too busy) I User interrupted test U Port unreachable H Host unreachable N Network unreachable P Protocol Unreachable T Timeout ? Unknown packet type