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Home › Reti di Calcolatori 2 › Capitolo II - Techniques and architectures for QoS › II.3Traffic and Service Characterization

II.3.2Leaky Bucket

Roberto Bifulco — Fri, 10/17/2008 - 22:39

Il Leaky Bucket si può associare all'idea di un imbuto. Il traffico viene raccolto nel Leaky Bucket che lo rilascia ad una velocità (bitrate) costante. A differenza del Token Bucket, con questo meccanismo il traffico accumula ritardi se la sua velocità di arrivo è maggiore di quella di uscita dal Bucket. Inoltre, per lo stesso motivo, il segnale in ingresso viene modificato, assumendo un'unica forma che è quella data dalla velocità di uscita dei dati dal Bucket.

‹ II.3.1Token Bucket up II.3.3Queue management ›
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Reti di Calcolatori 2

  • Introduzione
  • Capitolo I - Networks Evolution
    • Communication models
      • Circuit switching
      • Packet Switching
      • Flow Switching
    • A rapidly changing scenario
    • Data and media taxonomy
  • Capitolo II - Techniques and architectures for QoS
    • II.1QoS problems
    • II.2Service Specification
    • II.3Traffic and Service Characterization
      • II.3.1Token Bucket
      • II.3.2Leaky Bucket
      • II.3.3Queue management
      • II.3.4Scheduling
        • II.3.4.1Scheduling policies
        • II.3.4.1.1GPS
    • II.4Parekh-Gallager Theorem
    • II.5QoS Architectures
      • II.5.1Integrated Services (IntServ)
        • II.5.1.1RSVP
        • II.5.1.2IntServ today
      • II.5.2Differentiated Services (DiffServ)
        • II.5.2.1PHB: Expedited Forwarding
        • II.5.2.2PHB: Assured Forwarding
    • II.6QoS in Fast Interconnect
      • II.6.1Flow Control
        • II.6.1.1Flow Control in IBA
        • II.6.1.2Flow Control in ASI
        • II.6.1.3Flow Control in Ethernet
      • II.6.2Congestion control
        • II.6.2.1Congestion Control in IBA
        • II.6.2.2Congestion Control in ASI
  • Capitolo III - Inter-domain routing with BGP
    • III.1Intra-Domain Routing
      • III.1.1Distance Vector
      • III.1.2Link State
    • III.2Inter-domain routing
      • III.2.1Border Gateway Protocol (BGP)
        • III.2.1.1BGP Messages
        • III.2.1.2BGP Example 1
        • III.2.1.3Route preference
        • III.2.1.4The internet organization
        • III.2.1.5BGP in large networks
        • III.2.1.6Confederations
        • III.2.1.7Route Reflectors
        • III.2.1.8The dynamics of BGP
        • III.2.1.9BGP routing tables
        • III.2.1.10The route selection process
  • Capitolo IV - Asynchronous transfer mode
    • ATM architecture
    • ATM Protocol Stack
    • ATM Addressing
    • ATM Quality of Service
    • ATM Adaptation Layer
    • Call and Connection Control
    • ATM in LAN
    • IP over ATM
  • Capitolo V - Multi Protocol Label Switching
    • MPLS
  • Capitolo VI - Traffic Engineering
    • IP-based Traffic Engineering
    • MPLS-based traffic engineering
  • Capitolo VII - SDH/SONET
  • Capitolo VIII - IP su reti ottiche
    • DWDM
    • Generalized Framing Procedure (GFP)
    • Gigabit Ethernet (GbE)
    • IP-centric control of optical networks
  • Capitolo IX - Network Management
    • Simple Network Management Protocol (SNMP)
    • Network management applications
    • Professional and Business Challanges
    • Service life-cycle
    • Provisioning level Agreement
  • Capitolo X - Network Resiliency
    • Network recovery
    • Recovery Mechanisms Control
  • Capitolo XI - Network security
    • Types of Attack
    • Firewall
    • NAT
    • Intrusion Prevention Systems
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