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DES-7200 Configuration Guide Chapter 6 Network Communication Detection
Tools
Meanwhile, you can know the time that the network packet spennds to reach a
gateway. This is very useful for network analysis.
2. traceroute example where some gateways in a network are not connected:
DES-7200# traceroute 202.108.37.42
< press Ctrl+C to break >
Tracing the route to 202.108.37.42
1 192.168.12.1 0 msec 0 msec 0 msec
2 192.168.9.2 0 msec 4 msec 4 msec
3 192.168.110.1 16 msec 12 msec 16 msec
4 * * *
5 61.154.8.129 12 msec 28 msec 12 msec
6 61.154.8.17 8 msec 12 msec 16 msec
7 61.154.8.250 12 msec 12 msec 12 msec
8 218.85.157.222 12 msec 12 msec 12 msec
9 218.85.157.130 16 msec 16 msec 16 msec
10 218.85.157.77 16 msec 48 msec 16 msec
11 202.97.40.65 76 msec 24 msec 24 msec
12 202.97.37.65 32 msec 24 msec 24 msec
13 202.97.38.162 52 msec 52 msec 224 msec
14 202.96.12.38 84 msec 52 msec 52 msec
15 202.106.192.226 88 msec 52 msec 52 msec
16 202.106.192.174 52 msec 52 msec 88 msec
17 210.74.176.158 100 msec 52 msec 84 msec
18 202.108.37.42 48 msec 48 msec 52 msec
As you can see, to access the host with an IP address of 202.108.37.42, the
network packet passes through gateways 1 to 17 from the source address and
there is failure in gateway 4.
6.4 Traceroute IPv6
Connectivity Test
The Traceroute ipv6 command is mainly used to check the network
connectivity. It shows all the gateways that a packet passes through from the
source to the destination and exactly locates the fault when the network fails.
For network transmission, refer to the previous section.
The traceroute ipv6 command can run in the user EXEC mode and the
privileged EXEC mode. The command format is as follows:
Command Function
DES-7200# traceroute ipv6 [address [probe
probe] [ttl minimum maximum] [timeout
seconds]]
Trace the path that a packet passes through.
The following are two examples that apply traceroute ipv6. In one example,
network connectivity is good. In another example, some gateways in a network
are not connected.
6-4