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12 System Configuration
Traceroute
Use Traceroute to discover the routes that packets take when traveling on a hop-by-hop basis to their
destination through the network.
• Maps network routes by sending packets with small Time-to-Live (TTL) values and watches the ICMP
time-out announcements
• Command displays all L3 devices
• Can be used to detect issues on the network
• Tracks up to 30 hops
• Default UDP port uses 33434 unless modified in the traceroute command
CLI Example
The following shows an example of using the traceroute command to determine how many hops there
are to the destination. The command output shows each IP address the packet passes through and how
long it takes to get there. In this example, the packet takes 16 hops to reach its destination.
console#traceroute ?
ip Enter IP Address.
ipv6 Use keyword 'ipv6' if entering IPv6 Address.
console#traceroute 72.14.253.99
Traceroute to 72.14.253.99 ,30 hops max 0 byte packets:
1 10.131.10.1 <10 ms <10 ms <10 ms
2 210.210.108.193 <10 ms 10 ms <10 ms
3 192.168.81.1 <10 ms 10 ms <10 ms
4 210.214.5.161 <10 ms 10 ms 10 ms
5 210.214.5.169 <10 ms <10 ms 10 ms
6 124.7.202.2 10 ms <10 ms <10 ms
7 210.18.7.166 40 ms 30 ms 30 ms
8 202.144.2.193 30 ms 30 ms 30 ms
9 202.144.113.151 30 ms 40 ms 30 ms
10 72.14.196.97 40 ms 30 ms 100 ms
11 216.239.43.216 40 ms 40 ms 30 ms
12 216.239.43.209 60 ms 40 ms 40 ms
13 216.239.43.222 40 ms 50 ms 50 ms
14 216.239.43.221 100 ms 110 ms 100 ms
15 209.85.250.88 130 ms 130 ms 120 ms
16 209.85.250.105 130 ms 120 ms 130 ms
17 209.85.250.91 160 ms 160 ms 160 ms
18 216.239.47.237 290 ms 240 ms 250 ms
19 216.239.46.211 240 ms 270 ms 250 ms