Ethernet is the easiest access technology
Plug-and-play, auto-discovery
Ease of administration and internetworking
Port speed from 10 Mbps to 10 Gbps
Perceived as high-speed, low-cost
Little need for in-house IT support with advanced data
communication experience
A drawing of the first Ethernet system by Bob Metcalfe.
Ethernet is the ideal networking technology for office environment.
Alcatel IP Day, Hanoi, July 18, 2006
The metro Ethernet services (MES) being deployed by service
providers today have significant limitations.
Poor QoS for multi-service over shared media - the only way to
minimized packet loss, jitter and delay is to overprovision
Extremely limited service portfolio – best effort only
Poor VPN scalability – 4k VLAN IDs per network
Poor network resiliency – Spanning Tree Protocol is very slow for
network re-convergence upon network failure
Lack of OAM capabilities for service assurance
Lack of accounting capabilities for revenue generation
From a carrier’s point of view, Ethernet is not yet ready for the “primetime”
Alcatel IP Day, Hanoi, July 18, 2006
Equipment vendors patch their products to introduce MPLSbased Ethernet service to achieve:
Better QoS based on MPLS forwarding classes
Expanded service portfolio (Layer 2 and Layer 3 VPNs)
Better scalability – VLAN IDs should have only local significance
Better network resiliency – MPLS Fast Reroute (FRR)
Better OAM capabilities – LSP ping and traceroute
Better accounting – connection-oriented packet counting
Better = varying degree of improvement
MPLS makes Ethernet a credible carrier service.
Alcatel IP Day, Hanoi, July 18, 2006
Per-service, per-subscriber queuing and shaping
Page 18
Subscriber Isolation - prevents one user from taking too much shared
bandwidth
Bandwidth Efficiency - controls bursts to optimize use of buffers downstream
resulting in lower loss and better quality services
User differentiation - enforces each subscriber’s unique policy
Liquid Bandwidth – fluidly sharing the bandwidth among applications
Network control VPN
NGN/Mobile transport VPN
Port
Business VPN A
Business VPN B
Sub 1
Sub n
Voice
Bank
of
Asia
Video
ERP
Internet
..
.
..
.
Unique hierarchical QoS for new and innovative IP services
Alcatel IP Day, Hanoi, July 18, 2006
Per customer, per application QoS
Liquid Bandwidth
Bandwidth control on Unicast, and flooding traffic:
Multicast, Broadcast and unknown packets
Per customer, per application accouting
Alcatel IP Day, Hanoi, July 18, 2006
Service
Continuity
• Simultaneously
support existing and
emerging services
• Scalability across
multiple dimensions
• Seamless migration to
emerging services with
Ethernet - FR - ATM
network and service
interworking
Service
Richness
• Service-aware QoS to
meet demanding SLAs
• H-QoS to deliver tiered
service bundles
• Service-aware
accounting and billing for
innovative service models
• Full suite of legacy and
emerging Layer 2 and
Layer 3 VPNs
Service
Assurance
• Non-stop services
and non-stop routing
• Service-aware OA&M
diagnostic tools
• Policy-based Layer 2
and Layer 3
provisioning tools
• Pre-integrated OSS
partners
Alcatel Continues to Build Market Leadership in Carrier Ethernet
VLAN per sub
VLAN per service (per BSA)
Multicast replication for
broadcast TV
Upstream forwarding:
Subscriber traffic forwarded
from port to per-subscriber
VLAN on GE uplink. IGMP
control traffic snooped and
forwarded to broadcast VLAN.
Downstream forwarding:
VLAN to port forwarding.
Multicast streams bridged to
any subscriber port with IGMP
snooping function.
Alcatel IP Day, Hanoi, July 18, 2006
Per-subscriber QoS and
accounting. L2 multicast
with IGMP proxy.
Upstream forwarding:
MAC-based forwarding.
User-to-user
bridging
is blocked.
Downstream forwarding:
Bridging to destMAC.
ARP Broadcasts
blocked.
L2 termination and IP
routing point. Upstream
and downstream forwarding
by IP routing. DHCP proxy
point. Separate service
interface for different
services. Programmed MAC
per service interface
simplifies service splitting at
BSA. Supports one edge or
multiple edge devices.
Per-service priority/delay/loss
Content Differentiation in HSI
VoIP VLAN
VoIP
Video
HSI
Per-subscriber queueing and PIR/CIR
policing/shaping for HSI. HSI
service classified on SrcIP range.
Per-service prioritization for VoIP
and Video. VoIP prioritized over
Video. DstIP and/or DSCP
classification. 802.1p marking for
prioritization in the access and home
Alcatel IP Day, Hanoi, July 18, 2006
BSR
Video VLAN
GOLD
Access Node
GE
BSA
BRONZE
ONON-NET
VoIP and Video queued and
prioritized as per VLAN QoS policy
HSI content differentiation based
on DSCP. Each queue may have
individual CIR/PIR and shaping
Optional overall subscriber rate
limiting on VLAN (H-QoS)
HSI
VLAN
Internet
Service
Preferred content
marked (DSCP) at
trusted ingress points
of IP network .
For HSI content differentiation,
queueing for Gold/Silver/Bronze
based on DSCP classification.
Optional overall subscriber rate
limiting on VLAN
Per-service priority/delay/loss
Content Differentiation in HSI
Realtime
VoIP VLAN
HSI
Video VLAN
GOLD
BSA
Access Node
HSI: Per-subscriber
queueing, with PIR/CIR
policing/shaping.
VoIP/Video: shared queueing
for prioritization of real-time
traffic over HSI. Upstream
Video traffic is neglible
Alcatel IP Day, Hanoi, July 18, 2006
Per-subscriber
QoS/Content
classification for
content differentiation
BRONZE
ONON-NET
HSI
VLAN
GE
IP
BSR
Video/VoIP: QoS policy defines priority
and aggregate CIR/PIR.
HSI: QoS policy defines prioirty and
aggregate CIR/PIR. Content
differentiation based on ingress
classification. DSCP marked.
QoS
Per-subscriber, per-service queuing and
scheduling
Wirespeed classification and marking
Security
Wirespeed filtering with auto-configuration of
antispoofing
Prevention of unauthorized user-to-user
bridging
BSA acts as “trusted host” for BSR ARP requests
(ARP reply agent)
BSA validates customer ARP requests to prevent
theft of service at BSR
Press release on 20 October 2004:
“SBC selects Alcatel as primary supplier for
Project Lightspeed in USD 1.7 billion deal ”
http://www.home.alcatel.com/vpr/vpr.nsf/DateKey/07102004uk
Project Description
Project Lightspeed
Primary network infrastructure and
services supplier in a deal that is
estimated to be worth USD 1.7 billion
Applications
Integrated IP Television, ultra-high-speed,
user centric broadband services, IP voice
and wireless bundles
Alcatel IP Day, Hanoi, July 18, 2006
Timing & Key figures
SBC will reach18 million households by 2008
SBC will deploy 38,800 miles of fiber
Alcatel Equipment & Services
Alcatel 7750 SR, 7450 ESS, 5620 SAM,
7330 IP DSLAM
Video Service Integrator
Network System Integrator
•Leased lines
•Mostly narrowband
•High OPEX due to
management
•Perceived as “old”
IP/MPLS
ATM
FR
Multi
Access
• Ethernet VPNs
• Poor scalability
• Poor QoS
• High OPEX due to VLAN
ID management
• Perceived as “cheap and
un-realiable”
IP/VPN
Edge
Router
DSL
Access
Metro
Ethernet
Ethernet
Access
ATM is familiar to and trusted by carriers and their subscribers
Guaranteed QoS for multi-service
Reliably delivery of mission-critical traffic
• High-speed Internet Access
• BRAS model limits tripe-play
scalability
• Perceived as “best effort”
Today’s IP network is used to provide:
(unprofitable) Internet access and routing
Limited IP/VPN due to weak service QoS and service scalability
Alcatel IP Day, Hanoi, July 18, 2006
Today’s Network Infrastructure
An example North America Tier-1 Carrier (L2/L3 view)
Page 44
Common concerns of established carriers
Huge investment into
ATM over the last
decade
Multiple dedicated
single-purpose networks
Desire to introduce
IP/MPLS for a single
converged network
Scalable services:
• ATM/FR access to Internet
routing
• ATM/FR access to IP/VPN
• Continuation of legacy
ATM/FR services using single
IP/MPLS core
New services:
ATM
• ATM/Ethernet/FR any-to-any
FR
Layer 2 inter-working
• VPLS
• ATM/FR access to VPLS
Multi
• ATM, FR pseudo-wires over Access
MPLS
New Capabilities:
• Terminating VPLS/VLL for
Internet routing
• Terminating VPLS/VLL for
IP/VPN
• Non-stop routing
• Non-stop services
MSE = Multi-Service Edge
Internet
IP/MPLS
IP/VPN
MSE
DSL
Access
Metro
Ethernet
• VPLS is a Layer 2 MPLS
multipoint VPN service
• Enables QoS, scalability,
reliability, accounting and OAM
• Higher revenue and lower OPEX
Ethernet
Access
• Carrier Ethernet enables
scalable triple-play with DHCP
model
Universal access to new VPN services demands new functionalities at the Edge
Alcatel IP Day, Hanoi, July 18, 2006
• Support L2 and L3 protocols
• Offer L2 and L3 services
carrying mission-critical
data, premium IP as well as
best effort IP
• Extremely reliable to carry
mission-critical traffic
• Strong traffic management,
offering absolute QoS for
different CoS
• Strongly secured from DOS
attack
Purpose-built IP-based MSE seamlessly integrates ATM
aggregation into IP/MPLS core
Enable scalable native IP service delivery
True Multi-service Edge to realize seamless IP transformation of networks
Alcatel IP Day, Hanoi, July 18, 2006
Broad range of L2 and L3 services
E.g. FR, Ethernet, ATM and TDM along with IP VPNs
Single core network layer: most commonly MPLS
Primary Drivers
Minimise the cost/risk associated with rolling out new
services: avoid building a new network for each new
service
Generate new revenues from new wide area Ethernet
services (VLL/VPLS) and 2547 IP-VPN
Extend reach of existing Ethernet/FR/ATM services out-ofregion sites
Part of a wider IP convergence strategy - next generation
mobile backhaul and residential 3-play
Reduce CAPEX and OPEX
Alcatel IP Day, Hanoi, July 18, 2006
Complete replacement of all
public networks, driven by PSTN
end of life. Estimated £1B in
OPEX savings
Backhauling ATM traffic to an
MPLS core
Expansion of metro networks with
additional cost savings managing
existing FR / ATM services
Multi-service Edge (MSE)
Optimized for carrier-grade L2 and L3
services
Strong and deep packet processing and
inspection capabilities for security
Very scaleable in Ethernet, IP/MPLS and
ATM
Next generation MSE has non-stop
routing/MPLS to carry mission-critical data
Ethernet/VPLS, IP/VPN, VoIP, broadband
triple play
Optional: TDM grooming to optimize
GSM/GPRS/EDGE backhaul
MSE Service View
IPv6
NGN Voice and video
Triple Play
L3 VPN (rfc2547)
Non-stop LDP/RSVP/FRR/CSPF