Specifications

36
Example 2: Ping remote host by DNS Name.
Pinging dslreports.com [209.123.109.175] with 32 bytes of data:
Reply from 209.123.109.175: bytes=32 time=26ms TTL=242
Reply from 209.123.109.175: bytes=32 time=21ms TTL=242
Reply from 209.123.109.175: bytes=32 time=23ms TTL=242
Reply from 209.123.109.175: bytes=32 time=20ms TTL=242
Ping statistics for 209.123.109.175:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 20ms, Maximum = 26ms, Average = 22ms
Example 2: Ping remote host by DNS Name, ICMP response disabled.
Pinging www.compaq.com [161.114.19.252] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 161.114.19.252:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
9.2 Trace Route
Trace Route uses Internet Control Message Protocol (ICMP) to find each hop between the user and the
remote host, and the delay to each hop. This is very useful to determine the underlying cause of slow or
unavailable hosts. Trace Route uses the Time To Live (TTL) field to cause the packet to be rejected at each
hop. To reach the next hop TTL is increased by one. When a router receives a packet with an expired TTL
it discards the packet and informs the sender the packet exceeded the TTL limit. Trace Route uses this
information to build a path map and response time list to each hop between the source and destination. Note
in some cases a host will not respond to being pinged, Trace Route still works to identify the route but ping
will timeout.
Windows includes a command line Trace Route utility, TRACERT. VisualRoute provides more
information then TRACERT in a graphical format. In addition it performs a WHOIS lookup to determine
where the site is located and who owns it. This information is displayed on a map to show overall routing.
Typical TRACERT report:
Tracing route to dslreports.com [209.123.109.175] over a maximum of 30
hops:
1 * * * 192.168.2.1 (Broadband Router)
2 21 ms 68 ms 28 ms 10.20.1.1
3 20 ms 20 ms 22 ms F0-1-0.G-RTR1.MAN.verizon-gni.net [64.223.132.66]
4 24 ms 23 ms 22 ms s3-0-2.bstnma1-cr7.bbnplanet.net [4.24.92.5]
5 24 ms 24 ms 23 ms so-3-1-0.bstnma1-nbr1.bbnplanet.net [4.24.4.225]
6 27 ms 24 ms 23 ms so-7-0-0.bstnma1-nbr2.bbnplanet.net [4.24.10.218]
7 31 ms 31 ms 30 ms p9-0.nycmny1-nbr2.bbnplanet.net [4.24.6.50]
8 29 ms 32 ms 32 ms p1-0.nycmny1-cr2.bbnplanet.net [4.24.7.6]
9 33 ms 36 ms 34 ms h0.netaccess.bbnplanet.net [4.24.153.130]
10 36 ms 36 ms 36 ms a9-0-0-8.msfc1.oct.nac.net [209.123.11.85]
11 36 ms 33 ms 39 ms dslreports.com [209.123.109.175]
Trace complete.