Information
and Communication
Networks
Carrier Ethernet / Broadband Evolution
Dr.Ulrich Schoen
Siemens ICN Carrier Products – System Engineering
ITU All Star Access Workshop, 2-4 June 2004
… the Broadband Networking Trend:
... but, Ethernet must become CarrierGrade!
(VMAN, MPLS, OA&M ...)
Ethernet is the „natural Language“ of IP ...
(cheap, packetizing, statistical gain ...)
Almost all Carrier Services will be IP-based!
(www, VPN, VoIP, TV/Video ...)
ICN CP SE
Page 2
Broadband Deployments:
Bitrate Efficiency vs. Revenue Profitability
100
Mbit/s
Access Bitrate Mbit/s
$ Monthly Rate
100$
100
Mbit/s
60 $
40
Mbit/s
28 $
26
Mbit/s
21 $
10 $
APAC
Strategy
3
Mbit/s
eAccess
(Japan)
Chunghwa
(Taiwan)
Source: Broadband World Forum 05/2004
Dr.Semmoto (eAccess) et.al.
APAC, especially: (South)Korea, Japan, Taiwan, China ...
ICN CP SE
DTAG
(Germany)
Page 3
Example:
KT’s Next Services over Broadband
ICN CP SE
Page 4
.... for this Broadband Services Trend to become real,
a very cost effective, performant
and dedicated Packet Network is key:
ICN CP SE
Page 5
Carrier Ethernet:
Access and Metro Network Scenario
Customer Street
Premises cabinet
Metro Access
DSLAM
OEM
Inter-Metro Backbone
Ethernet OAM
PPE_SNT
EFMfiber
xDSL
Metro/Regional
Core
Cu
Eth/GE
Ressource
Management
PPE_SLE
IP/MPLS
IP Router Core
PPE_SLE
PPE_SLE/SHE
PPE_SHE
PPE_M/L/
XL
ISP
IP Router
802.16d
WiMAX
PPE_SHE
Seabridge
Products
GE
GE
Voice
fiber
optical
splitter
GPON
ICN CP SE
Source: ICN CP SE A
Page 6
A combination of VLAN access and
MPLS-based IP Core is scalable and efficient
Metro Ethernet
Network
Network Architectures
Site D
CE




Metro Ethernet
Network
hiD
hiD
VLAN
VLAN
CE
Site A
IP/MPLS
Core Network
hiD
hiD
MPLS
VLAN
PE
Provider VLAN
MPLS
MPLS
VC-LSP
MPLS
MPLS
Tunnel-LSP
hiD
CE
MPLS
hiD
Site B
PE
VLAN
Site C
Provider VLAN
CE
Does not require MPLS-aware nodes near to the customer location
PE nodes still need to implement one virtual bridge per VPLS instance
Additional protection via MPLS Fast Reroute only between PE nodes –
additional Ethernet protection mechanisms are necessary between PEs and CEs
Good scalability
 full mesh of tunnel LSPs between PE nodes is still required, but the number
of PE nodes is dramatically decreased
 Services can still be carried over an IP/MPLS core network
ICN CP SE
Page 7
Carrier Ethernet:
Characteristics and Objectives
Provider
Multiple SPs (Service Provider)
Services
Multi-Services: www, Voice, Video ...
Charging
Flat rate or call by call (PPP)
BRAS
BRAS possible, alternative ESN
QoS, CIR
yes
Customer Separation
yes
Service Separation
yes
Network OAM
yes
ICN CP SE
Page 8
Ethernet Standardization:
Many Standardization bodies involved

IEEE 802


DSL Forum



Services, OAM, UNI/NNI, Traffic Management, Protection, Circuit
Emulation
ITU

Services, Equipment, UNI/NNI, Circuit Emulation (SG15)

OAM, QoS, Traffic Management, Protection, VPNs (SG13)
CCSA


Ethernet based Access Networks, QoS
MEF


Provider bridge, Fault management, Link Security, QoS
China specific Ethernet definitions
IETF

Ethernet over IP/MPLS, L2VPN
ICN CP SE
Page 9
Summary

NG Broadband networks will be based on Ethernet/VLAN and MPLS

A carrier grade NG Broadband network needs


An efficient end-to-end management solution

Reliable and scalable nodes and network architectures

Leading edge access technologies
Carrier Ethernet relies on standards that secure investment policy.
ICN CP SE
Page 10