page3
Redes de Comunicações I, DETI
3/4
Guia Prático 1 – Experiências Base
3.
Connectivity tests
3.1. In a command window execute the command ping (same in Linux) to the following
addresses, and register the average round trip time. What can you conclude about the
relation between the round trip time and the geographical distance? Note: If pings do
not work, connect through the WiFi network in the lab.
Addresses
Machine location
Average round
trip time
www.ua.pt
Aveiro, Portugal (0Km)
www.up.pt
Porto, Portugal (~60Km)
www.fc.ul.pt
Lisboa, Portugal (~220Km)
www.utad.pt
Vila
Real,
Portugal
(~160Km)
www.uevora.pt
Évora, Portugal (~250Km)
www.uam.es
Madrid, Espanha (~420Km)
www.univ-paris8.fr
Paris, França (~1260Km)
web.mit.edu
EUA (~5100Km)
www.unisa.ac.za
África do Sul (~8750Km)
www.adelaide.edu.au
Austrália (~17100Km)
www.tanzaniatourism.go.tz Tanzânia (~3100Km)
4.
Discovery of the path between two network machines
4.1. In a command window execute the command tracert (Linux: traceroute) to the
following addresses, and register the number of network machines between the origin
and destination, and the address of the antepenultimate machine in the path. Repeat
using the option –d of the tracert command.
Addresses
Machine location
Number
of
machines
IP address of
the
antepenultimate
machine in the
path
www.ua.pt
Aveiro, Portugal (0Km)
www.up.pt
Porto, Portugal (~60Km)
www.fc.ul.pt
Lisboa, Portugal (~220Km)
www.utad.pt
Vila Real, Portugal (~160Km)
www.uevora.pt
Évora, Portugal (~250Km)
www.uam.es
Madrid, Espanha (~420Km)
www.univ-paris8.fr
Paris, França (~1260Km)
web.mit.edu
EUA (~5100Km)
www.unisa.ac.za
África do Sul (~8750Km)
www.adelaide.edu.au Austrália (~17100Km)
jornalnopintcha.gw
Guiné Bissau (~3100Km)
4.355ms
11.390ms
N/A
5.201ms
12.302ms
27.208ms
N/A
45.779ms
227.560ms
293.018ms
N/A
193.136.82.252
194.210.6.105
193.136.1.8
193.137.173.244
193.136.1.10
130.206.216.2
193.51.177.109
83.97.88.209
155.232.1.163
113.197.15.44
212.3.235.26
3
11
10
7
10
14
15
9
17
15
16