Transcript
The Value of PBB-TE and PLSB Infrastructure for Rural Healthcare Networks
Paul Littlewood Strategy & Architecture Metro Ethernet Networks
[email protected]
BUSINESS MADE SIMPLE
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Ethernet Infrastructure
> Cost • By far lowest cost per port CAPEX solution
> De-facto standard for LAN • Simplicity • Plug and play • Compatibility 2
> Cost Effectiveness • Widespread use of Ethernet interface • Purchase bandwidth only when needed
> Flexibility • Single UNI can connect multiple services • Internet, VPN, Extranet supplier, Storage Provider Nortel Confidential Information
A Simpler Carrier Solution for Ethernet Simplicity
Carrier Ethernet CAPEX Analysis 90%
$8M
80%
$7M
70%
MPLS Auto-Discovery
$6M
60%
MPLS Service Signalling
$5M $4M
50%
Resiliency and Multicasting
Layer 3 – IP
40%
MPLS Tunnelling Protocol
$3M
30%
Layer 2 – Ethernet
$2M
20%
$1M $-
10%
CAPEX
Savings (Dots)
$9M
Nortel CompetitorCompetitorCompetitor Competitor Competitor
1a
1b
2a
2b
Layer 3 – IP
IP Routing Protocol
Layer 0 – Wavelength
Layer 2 – Ethernet Layer 0 – Wavelength
0%
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Inter-working with MPLS Networks
Operational Simplicity in the Metro SONET/SDH Operations model
PBB PBT
MPLS
Superior OAM and SLA’s
PBB PBT
Ethernet cost points
Scales existing MPLS services 3
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Evolution of Provider Ethernet
802.1aq PLSB 802.1Qay PBB-TE Y.1731 Performance Management 802.1ag Fault Management 802.1ah PBB
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Robust L2 Control Plane Traffic Engineering
Proactive Management
Service and Infrastructure diagnostics Scalable, Secure Dataplane
Ethernet evolved to meet Service Provider Requirements Nortel Confidential Information
PBB Packet Walkthrough Healthcare facility router
PBB UNI
PBB UNI
Payload
Payload
Payload
Payload
Payload
Payload
VID SA DA
C-VID S-VID SA DA
C-VID S-VID SA DA I-SID B-VID B-SA B-DA
C-VID S-VID SA DA I-SID B-VID B-SA B-DA
C-VID S-VID SA DA
VID SA DA
802.1Q
802.1ad SA = Source MAC address DA = Destination MAC address VID = VLAN ID C-VID = Customer VID S-VID = Service VID I-SID = Service ID B-VID = Backbone VID B-DA = Backbone DA B-SA = Backbone SA
802.1ah Provider Backbone Bridge
PBT Header VID/DA is used for forwarding (overloading existing header)
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Provider Backbone Bridge (PBB) • Service Scalability
Up to 16 Million service identifiers
• Customer Separation Clear demarcation between customer and provider domains • Core MAC Scalability
Elimination of Mac explosions
Provider Backbone Bridge PBB UNI Network (802.1ah) PBB UNI
Provider Bridge Network (802.1ad)
Provider Bridge Network (802.1ad)
802.1ah
Provides Service Provider Network Scale & Security
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PBB – Traffic Engineering • • • •
Resiliency Trunk Scalability Traffic Engineering No Spanning Tree
50 ms with 802.1ag Up to 2^60 trunks identifiers Full path flexibility with QoS awareness No blocked links, no slow resiliency Trunk manager
PBB UNI
Traffic Engineered PBT trunks PBB UNI
PBB UNI
Carrier Ethernet
PBB UNI
Provides “SDH like” guaranteed performance & SLAs 7
Provider Link State Bridging > PLSB provides a scalable, carrier grade complement to PBT for E-LAN and E-TREE services > PLSB introduces the use of a link state networking protocol for Ethernet services • Enhanced Carrier Grade networking solution and network efficiency compared to traditional Spanning Tree protocols • The PLSB control plane achieves comparable functionality to MPLS with a fraction of the complexity
> PLSB builds on PBB and PBB-TE • Applies intelligence to how FDB’s are populated
> PBT (E-LINE), and PLSB (E-LAN and E-TREE) can operate sideby-side on the same network infrastructure PLSB delivers simple, robust Ethernet networking for E-LAN services 8
Services Delivery Y.1731 / 802.1ag Branch Office
Copper/ fiber
I2 MPLS NLR Core MERS 8600
PBB / PBT / PLSB
Police Station
Remote Office
Remote Office
WiMAX
Police Station RNC
Remote Office
> Flexible suite of connectivity offerings • Support for native Ethernet; point-to-point, point-to-multipoint and any-toany topology options (E-LINE, E-TREE, E-LAN)
> Differentiated services • Traffic engineered PBT tunnels with bandwidth reservation and 50 ms recovery • Advanced on-box traffic management (5-8 classes of service, policing, filtering etc)
• Operationally robust 9
• End-to-end OAM tools; customer and provider clear demarcation; secure infrastructure Nortel Confidential Information
2007 Carrier Ethernet Ecosystem Members
Updated 12/07 10
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Conclusion > The combination of PBB, PBB-TE and PLSB enables cost effective networks for delivering E-Line, E-Tree and E-LAN services > PBB-TE delivers SDH grade performance and rich OAM at the price level of Ethernet > Provider Link State Bridging delivers robust carrier-grade networking for E-LAN services with fast restoration
Suite of Carrier Ethernet Protocols Supporting all Connectivity Options
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