26956 bytes from 2002:3::1, icmp_seq=4 hlim=64 time=0.000 ms--- Ping6 statistics for 2002:3::1 ---5 packet(s) transmitted, 5 packet(s) received, 0.0% packet lossround-trip min/avg/max/std-dev = 0.000/0.000/0.000/0.000 msDisplaying and maintaining tunneling configurationExecute display commands in any view and reset commands in user view.Task CommandDisplay information about tunnel interfaces. display interface [ tunnel ] [ brief [ down ] ]display interface [ tunnel [ number ] ] [ brief [ description ] ]Display IPv6 information on tunnel interfaces. display ipv6 interface [ tunnel [ number ] ] [ brief ]Clear statistics on tunnel interfaces. reset counters interface [ tunnel [ number ] ]Troubleshooting tunneling configurationSymptomA tunnel interface configured with related parameters such as tunnel source address, tunnel destinationaddress, and tunnel mode cannot go up.AnalysisThe physical interface of the tunnel does not go up, or the tunnel destination is unreachable.Solution1. Use the display interface or display ipv6 interface commands to check whether the physicalinterface of the tunnel is up. If the physical interface is down, check the network connection.2. Use the display ipv6 routing-table or display ip routing-table command to check whether thetunnel destination is reachable. If the route is not available, configure a route to reach the tunneldestination.
