Presentation is loading. Please wait.

Presentation is loading. Please wait.

All rights reserved © 2005, Alcatel 1 Quality of Service in IP Networks Scott Nelson.

Similar presentations


Presentation on theme: "All rights reserved © 2005, Alcatel 1 Quality of Service in IP Networks Scott Nelson."— Presentation transcript:

1 All rights reserved © 2005, Alcatel 1 Quality of Service in IP Networks Scott Nelson

2 All rights reserved © 2005, Alcatel Page 2 Triple Play NGN Architecture

3 All rights reserved © 2005, Alcatel Page 3 Triple Play Service Delivery Architecture Distributed BNG (as shown) Subscriber management in BSA (7450) L2 forwarding with L3 QoS/security Full routing in the BSR (7750) Network architecture for lowest capex Collapses residential, business L2, and business L3 service aggregation on common elements No extra hops or boxes and supports local VOD PIM multicast trees reduced BNG Routed termination Subscriber management and routing in BSR Access nodes terminate into BSRs directly, or via Ethernet Aggr/Packet-Ring (1850TSS) backhaul Layer 3 Business services supported everywhere BSR (7750) also supports L2-VPNs for business Home Gateway BTV Broadband Access Node Broadband Service Router Broadband Network Gateway (BNG) as per DSL Forum WT-101 Broadband Service Aggregation IASP Partners IP Backbone Subscriber Public Internet ADSL2+ VDSL2 GPON

4 All rights reserved © 2005, Alcatel Page 4 Triple Play Service Delivery Architecture Address Scale and Reduce Cost Scalable subscriber management and QoS Improve Resiliency Non-Stop Services, subscriber-state resiliency, etc. Fully address subscriber, network, and application security Secured Ethernet, lawful interception, etc Provide an operational model for mass deployment Auto-configuration, simple OSS integration Improve Subscriber policy control H-QoS, L4-L7 policy control, etc Optimize for Applications Multicast handling, service admission control, etc Ability to consolidate business services on a common infrastructure L2-VPNs, L3-VPNs, Broadband services, Virtual Ethernet services, peering, etc Broadband Service Router Broadband Service Aggregation Home Gateway BTV Broadband Access Node IASP Partners IP Backbone Subscriber Public Internet ADSL2+ VDSL2 GPON

5 All rights reserved © 2005, Alcatel Page 5 IP Based Triple Play Triple Play of VoIP, IP Video and Internet Network Bandwidth dominated by IP Video Access, Metro and Core Internet Bandwidth ICC Bandwidth PiP Bandwidth VoD Bandwidth Multicast Bandwidth kbps IP Video Internet VoIP 0 30,000 60,000 90, , , Mbps 0 Based on modelling for NA Operator Internet traffic - Internet Core IP Traffic in the IP Core (behind BSR ) Assumes centralised VoD and D-server

6 All rights reserved © 2005, Alcatel Page 6 IP Video and Network Transformation AggregationService RouterAccessHome VoIP BW HSI BW 1.5M.1M.05M Total BW { 30x Scale Increase 30x100x~15x Todays Bandwidth Needs per user Core 10G ~300 users 100G ~8k users 200G ~50k users 3M.3M.2M 2M Total BW 1.5M10M20M VoIP BW.2M HSI BW IP Video BW.3M 9M.3M3M * 1M16M Triple Play Bandwidth Needs per user

7 All rights reserved © 2005, Alcatel Page 7 IP Quality of Service What do we mean by IP Quality of Service? Quality - Meeting the customers expectation Manage services at the IP layer Individual IP flows Multiservice IP networks Network Design plays a key role Network Dimensioning Coping with bursty nature of IP flows IP classifcation and differentiation of different service types –Video, VoIP, High Speed Internet Service and Network Availability Network resiliency High Service Availability in the Network Equipment This QoS Enabled IP Network is not the Internet HSI - High Speed Internet

8 All rights reserved © 2005, Alcatel Page 8 Video Burst IP VoIP VOD Best Effort Data Preferred Data 10GE 7450 ESS or 7750 SR Per Sub VLAN VoIP Video HSI 7750SR GE VoIP HSI Multi Sub VLAN VoIP HSI VoIP Video HSI Video Per Sub VLAN VoIP Video HSI End-to-End QoS Model Per-sub-per-service (basic) QoS at DSLAM Prioritization: 802.1p Queueing: 4 queues per sub & ingress policing CoS queuing to net. Multicast injection Marking: 802.1p marking Per-sub-per-service (advanced) QoS at Subscriber Mngmt Edge Prioritization: L2-L4, DSCP Queueing/Shaping: Hierarchical QoS Per-sub, per-service queuing, scheduling & shaping Marking: 802.1p downstream DSCP upstream Class-based QoS at Core with fair BW partitioning /reuse Prioritization: L2-L4, DSCP Queueing/Shaping: Application/content queues with shaping Marking/re-marking: DSCP downstream DSCP upstream Class-based QoS at Eth- Aggr/Packet-Ring with fair BW partitioning/re-use Prioritization: 802.1p Queueing/Shaping: MEF policing (EVC+CoS) CoS scheduling & shaping Fair ring-wide load balancing

9 All rights reserved © 2005, Alcatel Page 9 Leveraging the QoS Evolution for Improved High Speed Internet Services Triple Play is Driving a QoS-based Infrastructure We can leverage this Infrastructure for HSI Service Value Classification utilizes the QoS Infrastructure Increasing classification intelligence through application awareness Utilizing an integrated network level QoS Solution

10 All rights reserved © 2005, Alcatel Page 10 Beyond Triple Play – Adding Value to Internet For the Service Provider Tiered HSI Revenue Opportunities to increase ARPU Gaming, Peer-to-peer, URL filtering, iVoIP, iVideo Fairness: Align usage of HSI network resources with revenue on a per subscriber basis Enable an IASP eco-system to enable competing IASPs to differentiate themselves For the C/ASP Differentiate your offering by improving your customers HSI experience For the Subscriber Gain a better HSI experience Pay only for the value that you need

11 All rights reserved © 2005, Alcatel Page 11 Neutrality, Fairness and Service Improvement Net Neutrality (FCC August 2005 Principles) Access the internet content of choice Run applications and use services of choice Connect their choice of devices that do no harm Enjoy competition among service, application and content providers Fairness Ensure best-effort network resources are allocated in a just and equitable fashion Service Improvement Enables subscribers and content/application providers to improve their experiences over the public internet Service Expansion Delivers a Better Internet Experience Ensures Fairness and Maintains the Principles of Neutrality

12 All rights reserved © 2005, Alcatel Page 12 Triple Play Networks QoS Enabled IP Networks Basis for Triple Play Networks Underlying IP Infrastructure for IMS Architecture determined by IP Video needs Common architectures Different Implementations Remaining challenges Wholesaling models Beyond ULL Bit stream access Net Neutrality Requires creative and close co-operation between service providers, equipment vendors and regulators

13 All rights reserved © 2005, Alcatel Page 13

14 All rights reserved © 2005, Alcatel Page 14 High Availability for Residential & Business Services VPLS 7450 Sub-50ms Fast Reroute 7750 Non-stop routing Non-stop service means node stays up 7450 Dual-homed customer Single-homed DSLAM with LAG Spoke SDP to 7750 means Fast reroute to a routed interface instead of slower VRRP failover Non-stop routing Non-stop service means node stays up Policy VRRP provides service-aware choice of master gateway router. IPoE and VRRP provide hot standby reslience Hot-Standby IP edge router redundancy with IPoE/DHCP Rapid restoration with VPLS and sub-50ms fast-reroute, no spanning tree DHCP state persistence in 7450 and 7750 for all lease-related state Link redundancy options with 802.3ad link aggregation and active/standby options High-availability with non-stop routing/non-stop service

15 All rights reserved © 2005, Alcatel Page 15 Routed BNG Connectivity Models - Per-Sub VLAN & Multi-Sub VLAN Subnet spans many subscribers and multiple OLTs Retains same OLT connectivity model Enables persistent context for each subscriber Subnet can span multiple DSLAMs Subscriber identified by option 82 Subscriber policy and queues dynamically assigned FTTx xx BTV FTTx 73xx BTV Per-sub Per-subscriber Q-tagged circuits are sub-interfaces grouped into one common subnet IP: 1.2.3/24 FTTx xx BTV FTTx 73xx BTV Multi-sub Option for Multi-subscriber VLANs with bridging in DSLAM. VLAN group interface to extend subnet IP: 1.2.3/24


Download ppt "All rights reserved © 2005, Alcatel 1 Quality of Service in IP Networks Scott Nelson."

Similar presentations


Ads by Google