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