This is an old revision of the document!
Laborator - subiecte de explorat
4h: Studiu TCP+WiFi, wired+wireless
Review TCP: CW, AW, RTT, fast retr, throughput
- One hop wireless: AP→client
- plot MAC loss/delay/jitter vs PHY loss for fixed situations
- uniform loses
- bursty losses
- fixed rate, retries
- TCP/ICMP RTT vs MAC loss
- Application level RTT vs MAC loss
- Application level RTT vs AP bufferbloat
- Topology with one hop WiFi and one hop wired: simplest practical WiFi.
- download S→AP→Client
- vary loss on the wireless link
- vary delay on the wired link
- vary buffer in the AP
- monitor CW, RTT, throughput
2h: TCP mechanisms to combat loss
- what is in which OS? Linux/Windows/IOS
- SACK, TCP flavors
2h: Multiple downlink, uplink TCP clients
- increased efficiency?
- TCP acks are uplink - is there a problem?
- good link vs bad link, HOL blocking, fairness
