Ethernet

Ethernet

1. CSMA\CD

   • Carrie Sense Multiple Access with collision Detection
   • Jam Signal
     • Envoke a backoff signal

2. IEEE 802.3

   • 10BaseT
     • 10mbps twisted pairs - 100m
   • 10Base5
     • 10mbps - 500m
     • 10Base2
       • 10mbps 185m

3. IEEE 802.3u

   • Fast Ethernet
     • 100mbps

4. IEEE 802.3z

   • IEEE 802.3ab
     • Gigibit Ethernet 1000mbps

5. Pins

   • 1 & 2 - Transmit
     • 3 & 6 Recieve

6. Switch to Switch - Cross Over

   • Pc to Switch - Striaght Through
     • PC to Router - Cross Over

7. Cross Over Cable

   • Local Pin1 - Remote Pin 3
     • Local Pin 2 - Remote Pin 6
       • Local Pin 3 - Remote Pin 1
         • Local Pin 6 - Remote Pin 2

8. MAC Address

   • BIA, Physical Address, Ethernet address
     • L2 Address
   • 6 Bytes
     • OUI
       • Vender half
   • ff-ff-ff-ff-ff-ff
     • Broadcast