Discussion Notes 6

Discussion Notes 6 - EE132B - Recitation 8 Routing on the...

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

View Full Document Right Arrow Icon
EE132B - Recitation 8 Routing on the Internet Prof. Izhak Rubin [email protected] Electrical Engineering Department UCLA
Background image of page 1

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

View Full DocumentRight Arrow Icon
Routing on the Internet Definition In its simplest terms, routing is choosing a path over which data packets will be sent. On the internet, this function is performed by layer 3 (IP) of the OSI model. Each router attaches to 2 or more physical networks and forwards IP datagrams among them. Except for destinations on directly attached networks, hosts pass all IP datagrams to routers which will forward them to their final destinations. Two main classes of routing algorithms: Distance Vector (Bellman-Ford) Link State Routing (Shortest Path First)
Background image of page 2
When a router boots up, it initializes its routing table to contain an entry for each directly connected network. When a report arrives at router K from router J, K examines the set of destinations reported and the distance to each. If J knows a shorter way to a destination, or if J lists a destination that K does not have in its table, K replaces its table entry. The process of interchanging information between neighboring routers continues until convergence is reach. Main disadvantages:
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 11/11/2010 for the course EE 132B taught by Professor Izhakrubin during the Spring '09 term at UCLA.

Page1 / 10

Discussion Notes 6 - EE132B - Recitation 8 Routing on the...

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