5/28/2019 APRICOT 2019 Keynote 1 DPNM Lab, POSTECH Prof. James Won-Ki Hong Distributed Processing and Network Management (DPNM) Lab. Dept. of Computer Science and Engineering Pohang University of Science and Technology (POSTECH), Korea http://dpnm.postech.ac.kr [email protected]Feb. 28, 2019 Softwarization of the Internet Softwarization of the Internet APRICOT 2019 Keynote 2 DPNM Lab, POSTECH Table of Contents • Internet History • Internet Infrastructure • Motivation for Network Softwarization • Softwarization of the Internet • Concluding Remarks
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5/28/2019
APRICOT 2019 Keynote 1DPNM Lab, POSTECH
Prof. James Won-Ki Hong
Distributed Processing and Network Management (DPNM) Lab.Dept. of Computer Science and Engineering
Pohang University of Science and Technology (POSTECH), Korea
Softwarization of the InternetSoftwarization of the Internet
APRICOT 2019 Keynote 2DPNM Lab, POSTECH
Table of Contents
• Internet History
• Internet Infrastructure
• Motivation for Network Softwarization
• Softwarization of the Internet
• Concluding Remarks
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Internet History
50 years later
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Evolution of Telco Networks
Center Router
Core Router
Core Router
GSR
Server Farm
GSR
Core Router
Core Router
Global Hub
Foreign Carriers
1
1
DataCenter
IXOther Carriers
BTS
VoiceNetwork
GMSC
BSC
MSC/VLR
2G
eNodeB
SGW
PGW
HSSPCRF
MME
4G
NodeB
GGSN
SGSN
RNC
3G
NAT DNS DHCP DPI
BSS OSS NMS EMS Web
Cache
FW IDS IPS LB ACL
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Evolution of Mobile Networks
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Evolution of Mobile Communications
Source: European Commission
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Evolution of Wireless Networks (WiFi)
Source: L-com
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Evolution of Optical Networks
Source: Huawei
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Evolution of Data Centers
Source: Huawei
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Challenges of Telcos (1/2)
Source: Accenture Analysis
These advances in communications/networking technologies along with innovations on smart phones & apps resulted in explosive traffic growth on the Internet
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Challenges of Telcos (2/2)
Source: Accenture Analysis
Reasons for Data ExplosionSmart Phones & Devices
Increase of Multimedia Contents• Photos, YouTube, Sports, K-Pop Music Videos, K-Dramas…
Super Highways• 3G 4G (LTE, LTE-A) 5G
Increased CAPEX/OPEX for TelcosIncredibly high cost in buying spectrums
Very expensive black boxes (routers/switches/middleboxes)
What about Revenues & Profits?the revenues have not kept up and profits decreased
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Internet Applications (1992~2010)
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Internet Applications (2010~present)
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Mobile Instant Messaging Apps
KakaoTalk (Korea)WhatsApp (USA)
• Started: Nov. 2009
• Active Users: 1.5 Billion
• Dominant: USA, Europe, Brazil, Mexico, India
• Acquired by Facebook (Feb. 2014)
for $19B
• Started: March 2010
• Active Users: 49.8 Million
• Dominant: Korea (90% of Koreans use)
• Revenue from gaming, emoticon, finance
• 90% drop in Telco SMS Usage for last 6 years in Korea
Line (Japan/Taiwan)WeChat (China)
• Started: Jan. 2011
• Active Users: 1 Billion
• Dominant: China but growing in USA, Europe & Africa
• Revenue from gaming, shopping, banking
• Started: June 2011
• Active Users: 217 Million
• Dominant: Japan, Taiwan, Southeast Asia and South America