14 - Virtual Circuits ATM MPLS Virtual Networks Take-Home...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview: Virtual Circuits ATM MPLS Virtual Networks Take-Home Points Virtual Circuits and Virtual Networks Expanding Internet Services Daniel Zappala Brigham Young University Computer Science Department Virtual Circuits/Networks Daniel Zappala 1/21 Virtual Circuits ATM MPLS Virtual Networks Take-Home Points 1 Virtual Circuits 2 ATM 3 MPLS 4 Virtual Networks Motivation Uses 5 Take-Home Points Virtual Circuits/Networks Daniel Zappala 2/21 Virtual Circuits ATM MPLS Virtual Networks Take-Home Points Questions of the Day How can an ISP route traffic over multiple paths to provide load balancing? How can a company securely connect different office sites over the Internet? Virtual Circuits/Networks Daniel Zappala 3/21 Virtual Circuits ATM MPLS Virtual Networks Take-Home Points Datagrams packets forwarded using only destination address in packet each router sends packet to best next hop toward destination packets sent from same source to same destination may take different paths advantages simple no connection setup in network layer no connection state in routers complexity (reliability and transport) at the edges flexible: if a route fails, datagrams can take another path disadvantages can only use one route per destination forwarding table can be large no performance guarantees Virtual Circuits/Networks Daniel Zappala 4/21 Virtual Circuits ATM MPLS Virtual Networks Take-Home Points Virtual Circuit setup a fixed path through the network like a telephone circuit assign a flow to a path packets carry virtual circuit identifiers to identify the path, rather than being forwarded based on the destination IP address advantages can maintain multiple paths to a destination, each used by different flows can set aside resources for each path, e.g. bandwidth can isolate traffic, e.g. carry voice traffic separate from data traffic Virtual Circuits/Networks Daniel Zappala 5/21 Virtual Circuits...
View Full Document

This note was uploaded on 10/18/2011 for the course CS 460 taught by Professor Staff during the Spring '05 term at BYU.

Page1 / 22

14 - Virtual Circuits ATM MPLS Virtual Networks Take-Home...

This preview shows document pages 1 - 6. Sign up to view the full document.

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