This slide introduces the trends of data centers of telecommunication companies. Especially, it explains why current enterprise connections are towards many data centers. Accordingly, it shows that current telcos are preparing data center interconnect (DCI) technology. Additionally, the slide introduces the KT approach for the DCI service.

1. Data Center Interconnect Tech.
from Telco. Perspectives
2018.10.25
Kwang-koog Lee (Ph.D)
(kwangkoog.lee@kt.com)
The 18th Optical Internet Workshop

2. Trend

3. Data Center Business
• Co-Location
- Equipment, space, and bandwidth
are available for rental to retail
customers
• Cloud Service
- An off-premise form of computing
that stores data on the Internet
3

4. Data Center Market in Korea (1/3)
DCs (2016)
1452018 Estimated
$130B
* 출처: 「2016년 데이터산업 현황 조사」, 미래창조과학부|한국데이터진흥원, 2016. 4
CAGR
10%
4

5. Data Center Market in Korea (2/3)
• Data Solution : big data platform, design, DBMS, mgmt., analysis
• Deployment/Consulting : DB design/deploy, processing, consulting
• Data Service : information service, data analysis, data exchange
(Data Solution)
(Deploy/Consult)
(Data Service)
5

6. Data Center Market in Korea (3/3)
IT Services
45%
Telco.
25%
Government
21%
Finanace
5%
Institute
2%
Education & Etc…
• 16 additional data centers will be
constructed until 2020
• Domestic big companies,
government and global companies
try to build their own data centers
for the cost reduction
6

7. Domestic News (1/3)
7

8. Domestic News (2/3)
8

9. Domestic News (3/3)
9

10. Why Data Center Industry Grows?
10

11. Digital Transformation
11

12. Matured Cloud Computing Tech.
12

13. Big Data
13

14. Video Resolution
1920X1080
(4~6 Mbps)
1280X720
(2~4Mbps)
720X480
(1~2Mbps)
400kbps
~1.5Mbps
300kbps
~400kbps
14
For Mobile Devices

15. AI Services
15

16. 5G based on Edge Computing
16

17. Data Center Business Trends
• On-premise companies are moving to cloud rapidly
17

18. The Global Cloud Market Jumped 46%
YoY 46% Increase, $16B (Q4)
18

19. Amazon AWS
AWS already approached the market
prediction from many reports before
2015. (2 years faster)
AWS Total Valuation $130B in 2017
19

20. Why Cloud Computing Adoption (1/3)
20

21. Why Cloud Computing Adoption (2/3)
21

22. Why Cloud Computing Adoption (3/3)
22

23. Insight
• Data center industry rapidly grows (CAGR 10%)
- Most of ICT infrastructure markets in Korea are saturated
• On-premise companies (even big) are moving to Cloud
• Legacy ICT is moving shifting to new ICT paradigm by the new
data center momentum
23

24. Data Center Interconnect

25. Towards DCI
• Connections towards DCs are growing rapidly, too
– Most of connections are necessary for WAS services
– WASs are distributed for load balancing in multi sites and
– Companies’ ICT resources are distributed for DR, too
– “Data center interconnect” are essential in the new DC era
DCI DCI
Data Center A Data Center B
Data Center Interconnect
25

26. What do Customers Want for DCI
• Agility – fast business agility
• Any-connect – various connections for any DC
• Secure - security of data flowing
• Guaranteed – bandwidth guaranteed
• BoD – cost optimization,
on-demand IT & network, simultaneous
26

27. Provider Requirements of DCI
CONTROL INFRASTRUCTURE MANAGEMENT
• Simple
• Cost-effective
• Secure
• Automated
• Centralized
• Standard I/F
• Cross-domain
• Collectable
• Intelligent
27

28. Requirement: Infrastructure
28
- Advance the low margin by saturated
competition between providers
- Provide the connectivity to customers rapidly
- Guarantee the security of customer connections
- Consider limited size of current data centers

29. Requirement: Control
29
- Support of plug-and-play for data
center server/network resources
- A single control plane for complicate
physical and virtual resources
- Support of multi-vendor interoperability
for a simple control/mgmt. plane

30. Requirement: Management
30
- A single management plane for complex
data center resources to reduce TCO
- Collect huge-size of monitoring data in an
effective way
- AI-based root cause analysis to reduce TCO

31. DCI Approach of KT

32. KT DCI Service
• Nation-wide Fast Private Connect
- Various connection services (OTN, L2VPN, L3VPN) are provided to 6 sites
• DCI-SDN - Integrated control and management
- GUI-based control & management integrated SDN to cover all layers
DCIDCI
Data Center A
(one of six sites)
Data Center B
OTN(WDM), L2VPN, L3VPN
DCI Device
(L1+L2)
DCI-SDN
NETCONF, TL1
32
DCI Device
(L1+L2)

33. Various Connectivity over a single DCI infra.
33
Connectivity Service Structure BW Customer Types
WDM
1G/10G
/100G/
STM64/
FC
• Multi-DC co-location customers
- IT resource extensions
- DR services
L2VPN
100M~
10G
• Cloud customers
- Customer to public/private cloud
• Multi-DC co-location customers
- Additional cloud connection
L3VPN
100M~
10G
• Cloud customers
- Customer to public/private cloud
• Multi-DC co-location customers
- Additional cloud connection
Cross-
Connect
100M~
10G
• Customers to connect between
other customers inside data centers
or in another data center
IDC IDC
WDM WDM
Co-loCo-lo
IDC IDC
WDM WDM
Co-loCo-lo
VTEP VTEP
L2L2
IDC IDC
WDM WDM
Co-loCo-lo
VTEP VTEP
L3L3
IDC IDC
WDM WDM
Co-lo BCo-lo A
VTEP VTEP
L3L3

34. Single View Control & Mgmt by DCI-SDN
34
VTEP Device
WDM Device
Integrated L1+L2 Fault Management
End-to-End ControlGUI Topology ViewMgmt
Interfaces

35. S/W Framework for KT DCI
35
• KT customized ODL to make SDN Controller and ELK for mgmt
- From MD-SAL of ODL devices are abstract to KT YANG Model
- Then, SBI interfaces (Netconf, TL1) are used for the model
- ELK are used for management of alarm and event monitoring
UI (based on NEXT UI)
Ansible SNMP
Kibana
Elastic Search
Logstash
Netconf TL1 SNMP
Core & Common Framework (ODL)
Control & Mgmt Bundles
VTEP Device WDM Device