Operation Manual – IPv6 ManagementH3C S3100 Series Ethernet Switches Chapter 2 IPv6 Application Configuration2-7z Use the ping ipv6 -t timeout { destination-ipv6-address | hostname } [ -iinterface-type interface-number ] command to increase the timeout time limit, soas to determine whether it is due to the timeout limit is too small.2.4.2 Unable to Run TracerouteI. SymptomUnable to trace the route by performing traceroute operations.II. Solutionz Check that the destination host can be pinged.z If the host can be pinged through, check whether the UDP port that was includedin the tracert ipv6 command is used by an application on the host. If yes, youneed to use the tracert ipv6 command with an unreachable UDP port.2.4.3 Unable to Run TFTPI. SymptomUnable to download and upload files by performing TFTP operations.II. Solutionz Check that the route between the device and the TFTP server is up.z Check that the file system of the device is usable. You can check it by running thedir command in user view.z Check that the ACL configured for the TFTP server does not block the connectionto the TFTP server.2.4.4 Unable to Run TelnetI. SymptomUnable to login to Telnet server by performing Telnet operations.II. Solutionz Check that the Telnet server application is running on the server. Check theconfiguration allows the server reachable.z Check that the route between the device and the TFTP server is up.