次世代光ネットワークの制御方式に関する研究
− マルチレイヤ・アーキテクチャの開発 −
情報基盤研究系 浅野 正一郎、藤野 貴之、漆谷 重雄
ネットワーク制御の現在
ネットワークコストの削減は必須
¾The network control platform provides value added aspects such as
guaranteed bandwidth, security, IPv6, as well as scientific application already
implemented in SuperSINET.
¾When huge subscription is expected, the next target will be drastically large
capacity at reasonable cost.
¾With the expansion of the broadband services, the core network
investment would grow very rapidly.
¾Considering service pricing, future broadband service revenue will not
meet the investment growth.
¾Therefore, the core network needs a drastic cost reduction technology.
Differentiator
Session management
BW management
NW
Control
platform
BW guarantee (QoS)
Yen/month
Scientific
application control
Dynamic control
Security
Internet service pricing
Server for download
10400
For M to 10M bps
ISP charge
5900
Access charge
Additional Value
t
s
o
c
k
r
o
w
t
e
n
Economic
transfer of
massive traffic
Core node
Core NW
Edge node
Edge node
SW
3000
HGW
Maintenance
free by NW
control
Today
・ ・ ・
Future
1.5M
8M 12M
ADSL
24M
A new network architecture, called multi layer service network architecture, will
reduce unnecessary IP packet handling from the very center of the core
network and introduces layer 1 path in between the multi layer service edges
dynamically. This will lead to drastic cost reduction for aggregated traffic and
still be able to support various layers’ service at the edge of the core network.
¾Challenge includes functioning of core network and network control
platform, and development of related systems.
¾A timely realization of such functions for next-generation Science
Information Network is required.
Network control platform
Server
Legacy IP based
core network
architecture
ADSL
IP and lower core
100M
FTTH
開発の方向は
マルチレイヤ・アーキテクチャ
IP and higher layer edge
8:1
2000
1:1
・Priority Control
・Dynamic Firewall
HGW
Many:1
Access Line
3700
3600
3500 3550
3450
Optical access
at reasonable
cost
Access NW
Campus
network
4000
APL
DSLAM
Core network
Edge Node
Edge Node
IP and higher layer edge
FTTH
•Session control
•NW resource control
•Policy control
•AAA
OSS
Backbone
OLT
ISP/ASP’s
Wireless
Mobile
Multilayer
Edge Node
Multilayer network
architecture (proposal)
IP and higher layer multi
layer edge
Lower layer multi
layer core
IP and higher layer multi
layer edge
•Subscriber base process
(AAA, classification, etc)
•Granular traffic processing
(shaping/ policing, filtering, security,
etc)
•Service realization
(CDN, IMM, VPN, etc)
開発要素
Multilayer
Core Node
Multilayer
Edge Node
•Aggregated traffic transfer
(large capacity, high cost
performance,
high reliability)
•Multiple service support
(Per service differentiation)
開発の目標
¾Fundamental technology: (1) Path-through technology, (2) a new routing protocol for optical integrated
network
¾Advanced technology: (3) Multi layer resource optimization, (4) Traffic driven path-through
¾Service Creation technology: (5) L1VPN
¾In these five categories, network architecture and L1VPN as an advanced application, inter node protocols
are target technologies for collaboration.
(2) New routing protocol
(1) Multi layer path-through technology
(4) Traffic driven path-through
IP NW
ML core
ML edge
¾動的光ネットワーク制御の高度化
¾光ネットワーク資源の最適利用
¾学術研究応用への適合
¾トータルコストの大幅な削減
λ
IP NW
Layer 1 path-through path
(3) Multi layer resource optimization
(5) L1VPN
ML edge
¾国際共同開発による方式の共通化