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- ALOHA is Rude
- It doesn’t listen before transmitting
- Only 18% efficient
- Or 37%
- RTS = request to send
- Bridges
- We can split local Area Networks into segments and connect them with bridges
- Why split LANs
- Size limits (maximum allowed length of cable)
- Building to building communication
- Shared medium means shared bandwidth
- More stations mean less bandwidth per station
- Also splits into “collision domains”
- Size limits (maximum allowed length of cable)
- Bridges double network speed
- Use switches as bridges
- Now, can talk to anyone at the same time because of switches (simulated Ethernet segment)
- Switch = chooses what to send
- Hub = send to everyone
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