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Verifying the configuration, Displaying and maintaining tunneling configuration, Troubleshooting tunneling configuration – H3C Technologies H3C S12500 Series Switches User Manual

Page 235: Symptom

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retransmission interval 1000ms

DAD transmits 0

default site prefix length 48

# Comparison shows that the host acquires the address prefix 2001::/64 and automatically
generates the address 2001::5efe:2.1.1.2. Meanwhile, "uses Router Discovery" is displayed,

indicating that the router discovery function is enabled on the host. Ping the IPv6 address of the

tunnel interface of the switch. If the address is successfully pinged, an ISATAP tunnel is established.

C:\>ping 2001::5efe:1.1.1.1

Pinging 2001::5efe:1.1.1.1 with 32 bytes of data:

Reply from 2001::5efe:1.1.1.1: time=1ms

Reply from 2001::5efe:1.1.1.1: time=1ms

Reply from 2001::5efe:1.1.1.1: time=1ms

Reply from 2001::5efe:2.1.1.1: time=1ms

Ping statistics for 2001::5efe:1.1.1.1:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 1ms, Maximum = 1ms, Average = 1ms

Verifying the configuration

# Verify that the ISATAP host can access the host on the IPv6 network.

Displaying and maintaining tunneling configuration

Task Command

Remarks

Display information about tunnel
interfaces.

display interface [ tunnel ] [ brief [ down ] ]
[ | { begin | exclude | include }

regular-expression ]
display interface [ tunnel [ number ] ] [ brief

[ description ] ] [ | { begin | exclude |

include } regular-expression ]

Available in any view.

Display IPv6 information on tunnel
interfaces.

display ipv6 interface tunnel [ number ]
[ brief ] [ | { begin | exclude | include }
regular-expression ]

Available in any view.

Clear statistics on tunnel interfaces. reset counters interface [ tunnel [ number ] ] Available in user view.

Troubleshooting tunneling configuration

Symptom

After the configuration of related parameters such as tunnel source address, tunnel destination address,

and tunnel mode, the tunnel interface is still not up.