04-LL-Ethernet - Ethe t rne dom inant LAN te chnology: ap...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Ethernet “dominant” LAN technology: cheap $20 for 100Mbs! first widely used LAN technology Simpler, cheaper than token LANs and ATM Kept up with speed race: 10, 100, 1000 Mbps Uses Manchester encoding or 4B/5B Encoding Exports a connectionless , unreliable service interface Metcalfe’s Ethernet sketch
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Ethernet Service Interface Connectionless: No handshaking between sending and receiving adapter. Unreliable: Does not implement any reliable delivery protocol: Receiving adapter doesn’t send acks or nacks to sending adapter stream of datagrams passed to network layer can have gaps. reliability must be implemented by upper layer protocols if desired otherwise, application will see the gaps
Background image of page 2
3 Ethernet Frame Structure Preamble: 7 bytes with pattern 10101010 followed by one byte with pattern 10101011 (start of frame flag) used to synchronize receiver, sender clock rates & to have the receiver detect the beginning of the frame Addresses:
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/03/2009 for the course NET NET taught by Professor N/a during the Spring '09 term at Anadolu University.

Page1 / 5

04-LL-Ethernet - Ethe t rne dom inant LAN te chnology: ap...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online