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Avi Cahlon Carrier Ethernet Technical Product Marketing Avihlonseabridgenetworks

Topics for Discussion. Ethernet Technological Evolution Ethernet Technological Challenges Connection oriented Ethernet CoS/QoS. Carrier Ethernet is Popular Among Carriers Because it Provides. Low CAPEXThe business case require a low cost service platformMetro Ethernet is the most affordable t

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Avi Cahlon Carrier Ethernet Technical Product Marketing Avihlonseabridgenetworks

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    1. Avi Cahlon Carrier Ethernet – Technical Product Marketing Avi.cahlon@seabridgenetworks.com

    2. Topics for Discussion

    3. Carrier Ethernet is Popular Among Carriers Because it Provides… Low CAPEX The business case require a low cost service platform Metro Ethernet is the most affordable technology available today Home choice (UK) 14-28 Pounds per month Home choice (UK) 14-28 Pounds per month

    4. Metropolitan Area Network

    5. Topics for Discussion

    6. Carrier Ethernet Challenges – Service Wise

    7. Ethernet Challenges – Operational Wise

    8. So What Should be Added to Ethernet – Technology Scalable VLAN address space Minimize the usage of subscribers MAC addresses BW allocation mechanism Fast convergence resiliency mechanisms

    9. Topics for Discussion

    10. VLAN Cross Connect –Connection Oriented Ethernet Switched VLAN is defined between 2 adjacent nodes Similar to ATM VPI/VCI switching or TDM time slot interchange Each node makes a forwarding decision based on Double VLAN tag Port MAC learning is not employed over switched VLANs Interoperable with “non switched VLANs”

    11. VLAN Cross Connect – Example

    12. VLAN Cross Connect– (example cont’)

    13. Connectionless or Connection Oriented Ethernet ?

    14. Topics for Discussion

    15. Ethernet SLAs Many Enterprise customers will not move to metro Ethernet services unless: There are SLAs with performance assurances There is availability of service to all critical locations Triple Play residential subscribers require QoS mainly for Voice and Video (VoD and BTV) Critical SLA Service Attributes Bandwidth Profile Service Performance

    16. QoS Model 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. Presenter notes: traffic management - strategy to enable broadband networks to run at peak rates, while at the same time ensuring that bursty applications do not degrade quality levels of delay sensitive, premium servicesPresenter notes: traffic management - strategy to enable broadband networks to run at peak rates, while at the same time ensuring that bursty applications do not degrade quality levels of delay sensitive, premium services

    17. Differentiate Traffic Classes Treatment to different services The traffic is classified into groups. Each group can be filtered, prioritized. Each group may have different bandwidth and/or performance attributes. Service characteristics:

    18. Service Attributes Bandwidth Profile CIR/EIR/CBS/EBS Relation between SLA and QoS Basic idea is that we need to deliver SLA on the Metro Ethernet … in order to do so we need QoS Relation between SLA and QoS Basic idea is that we need to deliver SLA on the Metro Ethernet … in order to do so we need QoS

    19. Example CoS-based Metro Ethernet SLA E-Line Service 4 Classes of Service CoS determined via 802.1p CoS ID Common type of SLA used with CoS-based IP VPNs CIR (Committed Information Rate) EIR (Excess Information Rate) CIR (Committed Information Rate) EIR (Excess Information Rate)

    20. MEF - Bandwidth Profiles

    21. Service Frame Disposition Presenter notes: Give the terminology Presenter notes: Give the terminology

    22. Carrier Ethernet QoS Mechanisms Combination of Ethernet and MPLS mechanisms Ethernet mechanisms Classification, marking, shaping and policing Congestion avoidance Priority queuing Connection Admission Control (CAC) MPLS mechanisms MPLS QoS using RSVP-TE signaling Map Ethernet/802.1p bits to MPLS/EXP bits Map Ethernet/802.1p bits into different LSPs In this presentation we shall : Look into the mechanism implementation Describe the QoS flow within the switch Describe end-to-end QoS solutions Presenter notes: RSVP-TE – build tunnel with guaranteed BW In this presentation we shall : Look into the mechanism implementation Describe the QoS flow within the switch Describe end-to-end QoS solutions Presenter notes: RSVP-TE – build tunnel with guaranteed BW

    23. Building Blocks for the Infrastructure ATM Like Vs. Diffserv QoS

    24. Building Blocks for the Infrastructure ATM like QoS Vs. Diffserv

    25. End-to-End (E2E) QoS Example

    26. In Conclusion

    27. Thank you

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