ISEM 3015 Telecommunications and Networking

Technology Linking Campus Together

Group 3

12200743 Vivian, Chan Ka Ka 12205486 Kami, Wan On Kam 12209902 Vanessa, Chow Ying Tung 12210277 Phoebe, Cheung Hiu Ying 12210498 Andy, Wong Tsun Lam 12211567 Candy, Wong Ka Hei 12211613 Denis, Chau Kwan Hang 1

Outline

Network Campuses in HKBU Technology Linking Campuses

A. What is Network?

B. Campuses in HKBU C.

1) HSH to Shaw 2) Shaw to BU Road Univeristy 3) Shek Mun and SCE Technology Linking Campus : 1) Optical Fiber Internet in BU 2) Metropolitan Area Network (MAN) D. Internet in BU: 1) HARNET 2) Wired Ethernet Security Usage of Network The Past and Future

E.

3) BU WiFi

Security

1) External network

F.

2) Internal network

Usage of Network

1) UIS 2) Moodle 3) Printing quota 4) Booking Sport venue 5) Booking school facility 6) Library system

G. The Past and Future

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A. What is Network?

Enable communication between computers Support: 1) Access to World Wide Web 2) Shared use of application 3) Storage Server 4) Shared Printer 3

The Connection between the campuses 4

B. Three Campuses in HKBU (Kowloon Tong) Ho Sin Hang Campus Shaw Campus Baptist University Road Campus

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6

7 7

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Other Campuses

Shek Mun Campus School of Continuing Education 9

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12

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Connection Diagram

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C. Technology Linking Campus

1) Optical Fiber 2) Metropolitan Area Network (MAN) 16

1) Optical Fiber » Use pairs of fibers  carry the data in different direction » 10G Ethernet fiber » 40G Ethernet fiber 17

Why BU use optical fiber in connection?

a) thinner and lighter b) High speed (light speed) c) high bandwidth d) Relatively little weaken of signals (low attenuation) e) cheap 18 Source: Fiber Optic ( http://networking.layer-x.com/p070400-1.html

)

1) Optical Fiber 6. Enable Triple Play ( 三網合一 ) service Public Switched Telephone Network (voice), Internet (data) and Cable Television (video) provided in one single access connection

Request:

a. High data transmit capacity b. High quality c. Cost-efficiency 19

In the PAST….

• rent from the telecommunication company

Now…

• connect the network by ourselves • use the BU Bridge to connect the two campus 20

→ Can design the network to suit our own need without any restrict from the telecommunication companies 21

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2) Metropolitan Area Network Franki centre (SCE) & Shek Mun

Why?

Application for using its own optical fiber from Office of Communication Authority 23

2) Metropolitan Area Network Government Regulations Government may consider the followings: 1. The installation method and location of equipment.

2. Make available space in the common parts and the in-building telecommunications system to the operators. 24 Source: . Government Regulations- OFCA I0004 (12)

( http://www.ofca.gov.hk/filemanager/ofca/common/Industry/telecom/inote0004_12e.pdf

)

2) Metropolitan Area Network Government Regulations 3. Can the operators use the existing in-building telecommunications systems?

4. Can the installation comply with code of practice in Hong Kong ?

5. Public space more than 2m from an external wall of one building?

25 Source: . Government Regulations- OFCA I0004 (12)

( http://www.ofca.gov.hk/filemanager/ofca/common/Industry/telecom/inote0004_12e.pdf

)

2) Metropolitan Area Network

For HKBU,

Not allowed to dig tunnel unless authorized

Therefore,

Rent the Metropolitan Area Network from telecommunication company.

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2) Metropolitan Area Network Features: 1. Support high-speed disaster recovery system 2. High speed connection 3. capable of supporting ten of millions and hundreds of millions of bits per second 27

2) Metropolitan Area Network

Why choose MAN?

1.Cover greater distance than LAN 2. High speed,recover quickly from router/switch failure 3. Dynamically allocate more bandwidth on demand 28

D. Internet in BU

1) HARNET 2) Wired Ethernet 3) BU WiFi 29

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D. Network within each building of HKBU Office PC/Printer → Ethernet → Switch Notebook/Smartphone → Wi-Fi → Access Point (AP) Router Router → HARNET → Internet 31

D. Network within each building of HKBU 1) HARNET • The Hong Kong Academic and Research Network • Wide area network links eight tertiary institutions’ campus networks • Managed and operated by the Joint Universities Computer Centre (JUCC) 32 Source: HARNET( http://www.jucc.edu.hk/harnet.html

)

Institutions ATM connections Central HARNET hub

33 Source: HARNET( http://www.jucc.edu.hk/harnet.html

)

2) Cable connection in HKBU campus 34

2) Cable connection in HKBU campus ● Connect PC and printer by Ethernet on each floor.

● Ethernet: a family of computer networking technologies for local area networks (LANs) ● There is a LAN on each floor.

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2) Cable connection in HKBU campus ● The wires are not long enough ● In each building, there is a CABLE CLOSET on each floor.

CABLE CLOSET: used to store all the wires connected to computer, Notebook on the same floor ● There is a main cable closet which is responsible for connecting the all cable closet on the floor.

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2) Cable connection in HKBU campus ● Main cable closet from different floors connect to each other. ● All the PC and printer in one building are interconnected by switch. It becomes a LAN ● Therefor, all the PC and printer in the building are connected 37

2) Cable connection in HKBU campus ● Connection of cable closet from different building will connect to switch.

● ● The switch will then connect to router Router:a device that forwards data packets between computer networks , creating an overlay internetwork . A router is connected to two or more data lines from different networks.

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2) Cable connection in HKBU campus ● Each building has a router connect to other bulidings ● OPTICAL FIBER is used to transmit data between router and switch and the data transmit between router ● All the data from different building will be transmitted to AAB building by router. ● Connect to HARNET Internet.

● Under this process, different building PC are first connected by switch and then through the router connect to the Internet. 39

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3) Wi-Fi

How does Wi-Fi work?

Wired Networks Access Point Smart Phone Laptop Tablet Computer 41

3) Wi-Fi -

Access Point - More than 1,800 - Appear in every floor of buildings in HKBU (98%) - be easy to be hinder by walls - Not appear in some floors (like office) because the staff fears the access point will affect their health 42

3) Wi-Fi

•The four types of wifi in HKBU

1. BU-Standard 2. BUSRH-WiFi

Encryption

3. BU-Web 4. BU-Guest

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3) Wi-Fi

- Encryption

 make the content become unreadable

- Wi-Fi Protected Access (WPA/WPA2)

 is a stronger and better version of WEP (Wired Equivalent Privacy)  fixes all WEP privacy vulnerabilities 44 Source: HTG Explains: The Difference Between WEP, WPA, and WPA2 Wireless Encryption (and Why It Matters) ( http://www.howtogeek.com/167783/htg-explains-the-difference-between-wep-wpa-and-wpa2-wireless-encryption-and-why-it-matters/ )

Network

Sever    Web - manage web page (interface) File - manage every file Domain controller - manage login system 45

E. Usage

Sharing of Hardware and Software 46

E. Usage

1) 2) 3) 4) 5) 6) UIS Moodle Printing quota Booking Sport venue Booking school facility Library system 47

1. UIS

● Receive news from HKBU 48

1. UIS

● ● ● ● ● Search course information Pre-registration Timetable Exam timetable Hall registration 49

2. Moodle

● ● ● Teachers upload notes Students download notes and upload homework Communication between teachers and students through internal message system 50

3. Printing quota

● ● ● ● Library Resident hall Computer room AAB 7/F   record every printing cost store the printing quota 51

4. Booking sport venue

●

Wai Hang Sport Centre

●

SCC

●

SHSH



Synchronise data

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5. Booking school facility

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6. Library system

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F. Security

1) 2) External network Internal network 55

F. Security

1) External network  Easily accessed by non-BU students 56

F. Security

2) Internal network  Firewall  Verification - login - Identity the user (User name, password, Student ID card) 57

F. Security

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F. Security

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G. The Past and Future

Past

✗ Don’t have BU Bridge ✗ Don’t have own fiber ✗ Government Regulations  Rent from HK Office of the Communications Authority (OFCA) 60

G. The Past and Future

-Incident ✗ Some mouse nipped the fibers ✗ The fibers was damaged  Use steel wire to surround the fibers to protect 61

G. The Past and Future

∵ Demand Increase

Future

✓ Provide more fibers for users ✓ Use the better quality fibers ✓ Do not remove the old one because it is very difficult ☆ Build up the three tunnels on the ground between Wai Hang Sports Centre and HSH 62

REFERENCES Fiber Optics. (n.d.). Retrieved from http://networking.layer-x.com/p070400-1.html6. Triple-Play Network Government Regulations- OFCA I0004 (12) Retrieved from http://www.ofca.gov.hk/filemanager/ofca/common/Industry/telecom/inote0004_12e.pdf HTG Explains: The Difference Between WEP, WPA, and WPA2 Wireless Encryption (and Why It Matters). (n.d.).

Retrieved from http://www.howtogeek.com/167783/htg-explains-the-difference-between-wep-wpa-and-wpa2

wireless-encryption-and-why-it-matters/

Interview with HKBU ITO (25/03/2014) (https://drive.google.com/a/life.hkbu.edu.hk/file/d/0B1GRV9urh3gvSk1SVTBBWFNLMzg/edit?usp=sharing) ITO Wi-Fi Services. (n.d.). Retrieved from http://ito.hkbu.edu.hk/wifi/ Joint Universities Computer Centre (JUCC). (n.d.). Retrieved from http://www.jucc.edu.hk/harnet.html William S. (1999). Data Communication And Computer Networks 6th Edition. UK: Pearson Education