2 Simulation program » History » Version 4
Version 3 (MOURA, Ninon, 03/22/2016 11:59 PM) → Version 4/47 (MOURA, Ninon, 03/23/2016 12:17 AM)
h3. 2. Simulation program
h4. 2.1. Simulation
Insertion des lignes de commandes SANS MODEM sur PEP right:
# Remote Terminal: ssh connexion
ssh labo@192.168.0.200
# Super User Connexion
sudo su
# Definition of p5p1 IP adress
ifconfig p5p1 192.168.2.2
# Definition of p6p1 IP adress
ifconfig p5p1 192.168.3.1
# Add space delay to user interface
tc qdisc add dev p5p1 root netem delay 600ms
# Test connection and delay
# from 192.168.2.1 to 192.168.3.1
ping 192.168.3.1 -I 192.168.2.1
# Re-routing rule to in order to use PEPSal
iptables -t mangle -A PREROUTING -s 192.168.2.1 --proto tcp --tcp-flags ALL SYN -j QUEUE
iptables -t nat -A PREROUTING -s 192.168.2.1 --proto tcp -j REDIRECT --to-port 5000
iptables -t mangle -A PREROUTING -d 192.168.3.1 --proto tcp --tcp-flags ALL SYN -j QUEUE
iptables -t nat -A PREROUTING -d 192.168.3.1 --proto tcp -j REDIRECT --to-port 5000
# Display all rules
iptables -t mangle -t nat -L
# Proxy PEPSal
# pepsal -a 192.168.2.1
Then a TCP flow is simulated thanks to the iperf command.
h4. 2.2. Post processing
Use of iperf and tcpdump as hereafter
In Then we collect three parameters in order to get information on TCP packets, analyse the tcpdump commmand is executed. The save option is run and data are collected in a file.pcap. network :
Command is: - the latency;
tcpdump tcp -w fileName.pcap
- the jitter;
- the loss of packets.
# Files transfert Save data, from PC engine right to local management computer (192.168.0.102)
scp labo@192.168.0.201:Proj3/*.
The file generated by tcpdump command is compatibile with wireshark. Wireshark is a free network protocol analyzer. It lets you see what's happening on your network at a microscopic level. Thanks to this tool, we could compare with and without PEPSal:
- throughput,
- sequence number packets,
- windows size evolution.
Tests in terms of quality of usage, such as download a web browser, were planed. However due to difficulties in network configuration, those tests will not be run.
h4. 2.1. Simulation
Insertion des lignes de commandes SANS MODEM sur PEP right:
# Remote Terminal: ssh connexion
ssh labo@192.168.0.200
# Super User Connexion
sudo su
# Definition of p5p1 IP adress
ifconfig p5p1 192.168.2.2
# Definition of p6p1 IP adress
ifconfig p5p1 192.168.3.1
# Add space delay to user interface
tc qdisc add dev p5p1 root netem delay 600ms
# Test connection and delay
# from 192.168.2.1 to 192.168.3.1
ping 192.168.3.1 -I 192.168.2.1
# Re-routing rule to in order to use PEPSal
iptables -t mangle -A PREROUTING -s 192.168.2.1 --proto tcp --tcp-flags ALL SYN -j QUEUE
iptables -t nat -A PREROUTING -s 192.168.2.1 --proto tcp -j REDIRECT --to-port 5000
iptables -t mangle -A PREROUTING -d 192.168.3.1 --proto tcp --tcp-flags ALL SYN -j QUEUE
iptables -t nat -A PREROUTING -d 192.168.3.1 --proto tcp -j REDIRECT --to-port 5000
# Display all rules
iptables -t mangle -t nat -L
# Proxy PEPSal
# pepsal -a 192.168.2.1
Then a TCP flow is simulated thanks to the iperf command.
h4. 2.2. Post processing
Use of iperf and tcpdump as hereafter
In Then we collect three parameters in order to get information on TCP packets, analyse the tcpdump commmand is executed. The save option is run and data are collected in a file.pcap. network :
Command is: - the latency;
tcpdump tcp -w fileName.pcap
- the jitter;
- the loss of packets.
# Files transfert Save data, from PC engine right to local management computer (192.168.0.102)
scp labo@192.168.0.201:Proj3/*.
The file generated by tcpdump command is compatibile with wireshark. Wireshark is a free network protocol analyzer. It lets you see what's happening on your network at a microscopic level. Thanks to this tool, we could compare with and without PEPSal:
- throughput,
- sequence number packets,
- windows size evolution.
Tests in terms of quality of usage, such as download a web browser, were planed. However due to difficulties in network configuration, those tests will not be run.