03-LL-MAC - A LinkLayer B MessageM

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

View Full Document Right Arrow Icon
1 Link Layer Message M A B Problem:  Given a message M at a node A consisting of several  packets, how do you send the packets to a  “neighbor”  node B Neighbor:  A node attached to the same  link   Link  can be  point-to-point  or  broadcast Link  can be  guided  media (a copper, coax, fiber wire) or  unguided   media (wireless)
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 Link and Physical Layers This communication problem is handled by 2 protocols A Link Layer (LL) that sits on top of the physical layer (PL) and deals with Packet Encapsulation, Mux/Demux Framing  – Detecting frame boundaries Error Detection/Recovery  – Detecting corrupt frames Media Access Control (if the link is multi-access or broadcast)  Reliable delivery, flow control? – Optional A Physical Layer (PL) deals with encoding/decoding bits of a frame to/from the link Message M A B link physical link physical
Background image of page 2
3 Broadcast Links, Addressing and Media  Access Control Message M A C link physical link physical link physical B In a broadcast link, there are two additional issues that must be resolved
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 / 12

03-LL-MAC - A LinkLayer B MessageM

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