Lucent Technologies SLC ConnectReach User & Service Manual page 386

SLC ConnectReach System Monitoring
Miscellaneous Monitoring Commands
Using the Traceroute Command
Entering the
traceroute
command
7-52 Issue 4 June 2002
The traceroute command allows you to trace the routing history between two
points on an IP network. Traceroute sends three separate packets with the time to
live (TTL) field set to the lowest number possible. When the packets reach the first
router, three timeout messages are returned to the SLC ConnectReach system by
means of the Internet control message protocol (ICMP). Three more packets are
sent with the TTL field incremented by one. These packets pass the first router,
know as a hop, and reach the second router. This process continues until the hop
count reaches 30 or the destination address is reached.
For example:
>traceroute www.yahoo.com
traceroute to www.yahoo.com (204.71.200.68): 1-30 hops, 28 byte
packets
207.247.10.49 (207.247.10.49) 16.66ms 16.66ms 0.0ms
464.Hssi2-0.GW3.EWR1.ALTER.NET (157.130.1.77) 83.33ms 66.66ms
83.33ms
116.ATM3-0.XR1.EWR1.ALTER.NET. (146.188.177.174) 66.66ms 66.66ms
66.66ms
293.ATM6-0.XR1.NYC1.ALTER.NET. (146.188.177.153) 66.66ms 66.66ms
83.33ms
137.39.23.202 (137.39.23.202) 66.66mv (ttl=247!) 66.66ms (ttl=247!)
83.33ms (ttl=247!)
pos2-1-155M.cr1.NYC2.gblx.net (206.132.249.185) 66.66ms (ttl=247!)
66.66ms (ttl=247!) 66.66ms (ttl=247!)
pos7-0-622M.cr2.SNV.gblx.net. (206.132.151.22) 150ms (ttl=245!)
133ms (ttl=245!)
pos1-0-2488M.hr8.SNV.gblx.net. (206.132.254.41) 133ms (ttl=244!)
150ms (ttl=244!) 150ms (ttl=244!)
www.yahoo.com (204.71.200.68) 150ms (ttl=244!) 133ms (ttl=244!)
133ms (ttl=244!)
363-208-050
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