Carrier Ethernet / Broadband Evolution

1. 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

2. ICN CP SE Page 2
… the Broadband Networking Trend:
Almost all Carrier Services will be IP-based!
(www, VPN, VoIP, TV/Video ...)
Ethernet is the „natural Language“ of IP ...
(cheap, packetizing, statistical gain ...)
... but, Ethernet must become CarrierGrade!
(VMAN, MPLS, OA&M ...)

3. ICN CP SE Page 3
Broadband Deployments:
Bitrate Efficiency vs. Revenue Profitability
100
Mbit/s
100
Mbit/s
Chunghwa
(Taiwan)
DTAG
(Germany)
40
Mbit/s
eAccess
(Japan)
APAC
Strategy
Source: Broadband World Forum 05/2004
Dr.Semmoto (eAccess) et.al.APAC, especially: (South)Korea, Japan, Taiwan, China ...
Access Bitrate Mbit/s
28 $
21 $
$ Monthly Rate
10 $
100$
60 $
26
Mbit/s
3
Mbit/s

4. ICN CP SE Page 4
Example:
KT’s Next Services over Broadband

5. ICN CP SE Page 5
.... for this Broadband Services Trend to become real,
a very cost effective, performant
and dedicated Packet Network is key:

6. ICN CP SE Page 6
Carrier Ethernet:
Access and Metro Network Scenario
Metro/Regional
Core
Customer
Premises
Street
cabinet
Metro Access
IP/MPLS
Core
Voice
Inter-Metro Backbone
PPE_SNT
PPE_M/L/
XLPPE_SHE
IP Router
DSLAM
optical
splitter
Cu
IP Router
ISP
GE
Eth/GE
PPE_SLE
PPE_SLE
Ethernet OAM
Ressource
Management
PPE_SLE/SHE
Seabridge
Products
OEM
GE
802.16d
GPONGPON
WiMAXWiMAX
xDSLxDSL
fiberEFMEFM
PPE_SHE
fiber
Source: ICN CP SE A

7. ICN CP SE Page 7
IP/MPLS
Core Network
MPLS MPLS
MPLS MPLSPE
hiD
MPLS
A combination of VLAN access and
MPLS-based IP Core is scalable and efficient
Site A
CE
Site B
CE
Site C
CE
VLAN
hiD
VLAN
hiD
Metro Ethernet
Network
Metro Ethernet
Network
VLAN
hiD
VLAN
hiD
Site D
CE
PE
hiD
MPLS
 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
Tunnel-LSPVC-LSPProvider VLAN Provider VLAN
NetworkArchitectures

8. ICN CP SE Page 8
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

9. ICN CP SE Page 9
Ethernet Standardization:
Many Standardization bodies involved
 IEEE 802
 Provider bridge, Fault management, Link Security, QoS
 DSL Forum
 Ethernet based Access Networks, QoS
 MEF
 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
 China specific Ethernet definitions
 IETF
 Ethernet over IP/MPLS, L2VPN

10. ICN CP SE Page 10
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.