21CS637-Advanced-Networks
Satellite Communication
Earth to Moon.
The time for data to travel from earth to the moon is: 385,000,000 (m) / 300000000 (m/s) = 1.28333 (s).
So the minimum RTT is 1.2833 ∗ 2 = 2.56666 seconds.
Tools Used
- tc
- ipref3
LFN Network
Case 1
| Parameter | Value |
|---|---|
| Speed | 10Gbps |
| Loss & Delay | 10% & 100 ms |
sudo tc qdisc add dev lo root handle 1: netem delay 100ms loss 10%
sudo tc qdisc add dev lo parent 1: handle 2: tbf rate 10gbit burst 1000000 limit 2500000
sudo tc qdisc show dev lo
qdisc netem 1: root refcnt 2 limit 1000 delay 100.0ms loss 10%
qdisc tbf 2: parent 1: rate 10000Mbit burst 1000000b lat 1.2ms
Case 2
| Parameter | Value |
|---|---|
| Speed | 10Gbps |
| Loss & Delay | 50% & 200 ms |
sudo tc qdisc add dev lo root handle 1: netem delay 200ms loss 50%
sudo tc qdisc add dev lo parent 1: handle 2: tbf rate 10gbit burst 1000000 limit 2500000
sudo tc qdisc show dev lo
qdisc netem 1: root refcnt 2 limit 1000 delay 200.0ms loss 50%
qdisc tbf 2: parent 1: rate 10000Mbit burst 1000000b lat 1.2ms
Fast Ethernet
Case 1
| Parameter | Value |
|---|---|
| Speed | 100Mbps |
| Loss & Delay | 10% & 100 ms |
sudo tc qdisc add dev lo root handle 1: netem delay 100ms loss 10%
sudo tc qdisc add dev lo parent 1: handle 2: tbf rate 100mbit burst 1000000 limit 2500000
qdisc netem 1: root refcnt 2 limit 1000 delay 100.0ms loss 10%
qdisc tbf 2: parent 1: rate 100000Kbit burst 1000000b lat 120.0ms
Case 2
| Parameter | Value |
|---|---|
| Speed | 100Mbps |
| Loss & Delay | 50% & 200 ms |
sudo tc qdisc add dev lo root handle 1: netem delay 200ms loss 50%
sudo tc qdisc add dev lo parent 1: handle 2: tbf rate 100mbit burst 1000000 limit 2500000
qdisc netem 1: root refcnt 2 limit 1000 delay 200.0ms loss 50%
qdisc tbf 2: parent 1: rate 100000Kbit burst 1000000b lat 120.0ms
