Annexe 1 – Modèles de référence de systèmes à satellites
1 Domaine d'application
2 Modèles de référence
2.1
Liaisons point à point
2.2
Réseaux VSAT
2.2.1 Topologie en étoile
2.2.2 Topologie maillée
2.3
Accès à large bande
3 Limitations
du protocole TCP sur les liaisons par satellite
3.1
Produit largeur de bande-délai
3.2
Démarrage progressif et évitement des encombrements
3.3
Retransmission rapide et récupération rapide
3.4
Effet des erreurs sur les bits sur le débit TCP
Annexe 2 – Domaine
d'application
1 Scope
2 Variations of baseline TCP
3 Segment splitting methodologies
3.1
Two-segment splitting methodology
3.2
Three-segment splitting methodology
3.3
Discussion
4 Performance enhancing proxies
4.1
TCP spoofing
4.2
PEP mechanisms
4.3
Implications of using PEP
4.3.1 End-to-end
security
4.3.2 End-to-end
reliability
Annexe 3 – Tests and measured performance of TCP
enhancements
1 Scope
2 TCP performance with splitting enhancement
2.1
Single TCP connection performance tested without any improvement
2.1.1 Single TCP
connection performance testing
2.1.2 TCP without
performance enhancement
2.1.3 Performance of
single TCP connection without performance enhancement
2.2
Two-segment splitting
2.2.1 Configuration of
satellite networks
2.2.2 Tests results
2.2.3 Conclusions
2.3
Three-segment splitting
2.3.1 Configuration of
satellite networks
2.3.2 Test procedures
2.3.3 Test results
2.3.4 Conclusions
3 TCP performance over a satellite ATM network
3.1
Network configuration
3.2
TCP performance in ATM-based satellite-only network
3.3
TCP behaviours in heterogeneous networks including
satellite link
3.3.1 Simulation of
buffer size
3.3.2 TCP performance with
traffic control in TCP sender
3.4
Conclusions
4 TCP performance in satellite access networks
4.1
Network architecture and configuration
4.1.1 Network
architecture
4.1.2 Configuration
4.2 Results of performance measurement
4.2.1
Availability
4.2.2 Throughput
4.2.3 Traffic
5 Application protocol measurements (FTP and HTTP)
5.1
Satellite ATM network configuration
5.2
FTP throughput over OC‑3 satellite link
5.3
HTTP throughput over OC‑3 satellite link
5.3.1 HTTP 1.0
with non-persistent connections
5.3.2 HTTP 1.0
with “keep-alive” option
5.3.3 HTTP 1.1
without pipelining
5.3.4 HTTP 1.1
with pipelining
5.3.5 Test results
5.4
Conclusions