Linux Based DiffServ. Router

12/26/11 Cairo University Faculty of Engineering Electronics &Communication dpt. 4th year ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Linux-based Implementation Of a Router (B.Sc Graduation project) 2002 DiffServ

12/26/11 Internet Protocol (IP).was designed to provide best-effort service. • VoIP • FTP QOS: Quality of Service (QoS) implies the ability to differentiate traffic streams and to define a level of performance for those traffic streams across a network. When heavily utilized networks are carrying various types of traffic for different users, QoS is a mean of offering better service Introduction to QoS: ,[object Object],[object Object]

12/26/11 ,[object Object],[object Object],[object Object],Parameters

12/26/11 IntServ vs. DiffServ ,[object Object]

12/26/11 ,[object Object],Each has its won points of strength And weakness

12/26/11 ,[object Object],[object Object],[object Object],DS Boundary Nodes and Interior Nodes: DS Ingress Node and Egress Node: Differentiated Services Region: Traffic Classification and Conditioning: Classifiers: Traffic Profiles: Traffic Conditioners:

12/26/11 Meters: Markers: Shapers: Droppers: Location of Traffic Conditioners and MF Classifiers: Within the Source Domain: At the Boundary of a DS Domain: In non-DS-Capable Domains: In Interior DS Nodes:

12/26/11 ,[object Object],[object Object],[object Object]

12/26/11 ,[object Object],[object Object],[object Object],[object Object]

12/26/11 ,[object Object],A per-hop behavior (PHB) is a description of the externally observable forwarding behavior of a DS node applied to a particular DS behavior aggregate (BA). ,[object Object],Currently there are 4 standard different per hop behaviors PHB’s: Default PHB Class-Selector PHB. Assured Forwarding (AFny) PHB. Expedited Forwarding (EF) PHB.

12/26/11 ,[object Object],[object Object]

12/26/11 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

12/26/11 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

12/26/11 Infra-structure Functions: ,[object Object],[object Object],[object Object],t_start( ) t_reset( ) Make_phb( ) make_EF( ) make_AF( ) make_BE( ) make_Subfilter( ) make_marker( )

12/26/11 Software implementation ,[object Object],[object Object],[object Object]

12/26/11 using C++ Classes ,[object Object],[object Object],[object Object],Architecture Overview

12/26/11 using C++ Classes Architecture Overview

12/26/11 Communication between Classes

12/26/11 GUI tabs PHB configuration tab

12/26/11 We have performed testing on 3 basic levels: 1. Marking: Testing if packets were marked according to specified classification. 2. ToS: Testing if the classification according to ToS and monitoring packets flow were mapped to the required PHB 3. PHB’s Implementation: Monitoring different rates assigned to each class 4.5 Testing procedure

Linux Based DiffServ. Router

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Linux Based DiffServ. Router