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1 Network Analysis and Management 網路分析與管理陳瑞奇亞洲大學資訊工程學系 Fall, Administration lass: 資工碩士二 A, 週三 12:10-15:00, 圖資大樓 5213 Text: 1. J. Richard Burke 著, 郭書佑等譯, 網路管理, 碁峰學苑, Reprint of Papers and RFs Reference: 1. J. Richard Burke, Network Management oncepts & Practice : A Hands-on Approach, Prentice Hall( 東華書局 ), Mani Subramanian, Network Management: Principles and Practice, Addison-Wesley, D.R. Mauro and K.J. Schmidt, Essential SNMP, O'Reilly & Associates, William Stallings, SNMP, SNMPv2, SNMPv3 and RMON 1 and 2, 3rd Edition, Addison-Wesley,

2 Instructor: Administration(cont.) 陳瑞奇資訊工程學系助理教授 Office: Room 8016 ( 男二宿地下室 ), Room 3502 ( 圖資大樓 5F 資工系辦 ) rikki@asia.edu.tw Tel: ext Mobile: Office hours: ( 一 ) 13:10 16:00 ( 二 ) 13:10 16:00 ( 三 ) 09:10 11:30 ( 四 ) 13:10 16:00 Grade: Attendance (including Q&A) 10% Homework Assignments 30% Mid-term Exam 30% Final Exam (Presentation) 30% 3 Administration(cont.) Submission of your homework Via To: rikki@asia.edu.tw Subject: NAM HWn, Name: XXX, ID#:YYYYYY Attachment: ID#_HWn.doc With Papers (A4 size) Title: NAM HWn, Name: XXX, ID#:YYYYYY Note: Submission after deadline will be graded a 30% discount. 4

3 ontents 1. ISO OSI 7 Layers & Review 2. Underlying Technologies (Ethernet/IEEE WLAN/2G/3G) 3. Network Devices (Hubs/Switches/Routers) 4. TP/IP Suite & Application Protocols 5. Network Traffic Analysis (Using Ethereal, Sniffer, etc.) Usage Report (Assignment #1) 6. Network Security Tools Presentation of Installation & Demonstration (Assignment #2) 7. Introduction to Network Management 8. Strategy of Network Management 9. lient-server Architecture 5 網路 : 1. 工作站 5. 印表機通訊傳輸媒介 4. 工作站 3. 工作站工作站兩台以上的電腦, 透過某種形式的連線, 達到訊息交換與資源共享的目的 2. 6

4 Figure 2-2 OSI layers 7 Figure 2-3 An exchange using the OSI model 8

5 Figure 他人 LAN 10

6 11 12

7 14

8 15 Figure 3-3 Ethernet layers 16

9 Figure 3-4 Ethernet frame 17 Figure 3-2 SMA/D 18

10 100 BaseTX 網路 Hub Hub Hub Hub 19 Figure 3-26 onnecting devices 20

10-3 無線網路標準 IEEE 802.11 IEEE 802.11 無線區域網路標準發展 (ont.) IEEE 802.

等六家廠商, 於 1999 年成立無線網路聯盟 (Wireless Ethernet ompatibility Alliance;WEA) 以

11 10-3 無線網路標準 IEEE IEEE 無線區域網路標準發展 (ont.) IEEE b /g 為統合無線網路產品 3om Aironet Intersil Lucent Nokia 及 Symbol Technologies 等六家廠商, 於 1999 年成立無線網路聯盟 (Wireless Ethernet ompatibility Alliance;WEA) 以 Wi-Fi (Wireless Fidelity) 作為符合 IEEE b 標準之產品標示 21 Infrastructure WLAN 集線器 AP 22

12 Figure 3-15 SMA/A 23 24

13 1 2 若只想看此機器對外的進出, 則其一設定 My IP address 25 26

14 27 28

15 29 30

16 31 32

17 33 34

18 35 36

19 37 ISO 網路管理類別效能管理故障管理設定管理安全管理帳目化管理 38

20 3.4.1 效能管理網路的效能 (Performance) 是由網路是否能滿足眾多使用者來決定網路的效能管理和產出率使用百分率錯誤率及反應時間有關設計網路時, 可用不同的設備及網路參數來模擬網路, 用以預測網路的效能故障管理故障 (Fault) 管理的過程是以潛伏性預防, 偵測隔絕及修正網路不正常行為故障管理可以是簡單地監視電纜是否斷裂列表機是否卡紙或工作站是否當機故障管理就是監視各種會降低網路反應的事件對於 LAN 而言, 故障管理即為監視流量以找出過多的封包碰撞或重新傳送, 其中包括設定警報當超過重要臨界值時, 自動通知管理員故障管理的目標是使用趨勢分析來預測故障, 改變網路狀況讓使用者可以不間斷地使用網路 40

21 3.4.3 設定管理網路的設定 (onfiguration) 管理包括網路設定及設備的設定 ; 網路設定常稱為容量管理, 因為主要的考慮是重新設計拓樸, 以及增加或重分配資源以供應所需的流量當網路規模成長, 自動設定 (Automated configuration) 成為網路管理的重要部分 DHP DNS 都是自動設定的例子 NMS 使用網路設備自動回復及 IP 位址複製來協助設定管理的工作 ;NMS 也使用 SNMP 訊息來決定, 以及儲存設備的設定安全管理當金融交易及電子商務在網際網路上盛行時, 安全管理成為網路管理的重要一環 ; 再者, 最新的考量則是恐怖主義安全管理的操作是以認證加密授權政策防火牆及網路入侵偵測等機制來控制網路資源的存取這些機制依照使用者及使用方式來限制主機電腦網路設備檔案及應用程式的存取, 並對於嘗試或實際違反安全的情況發出警報在設備間傳遞認證訊息時, 讓接收者知道誰是傳送者, 就是安全技術的例子 42

22 3.4.5 帳目化管理帳目化管理是為了有效分配成本與資源, 計算網路資源使用的情況監視特定部門的使用者使用伺服器的狀況, 並據此要求部門付費即為帳目化管理的一個例子 43 ontents (cont.) 10. Simple Network Management Protocols (SNMP and SNMPv2) 11. MIB/MIB II: Report of RFs Reading (Assignment #3) 12. RMON1/RMON2 13. Desktop Management / Presentation of an NM Paper 14. Web-based Management 15. SNMPv3 16. Network Performance Evaluation: 3G/4G RRM 17. Writing Skills for Technical Papers 18. Presentation of NM Papers (Final Exam) 44

23 SNMP-Managed Network Network Management System SNMP SNMP Agent MIB Picture sources by isco Systems, Inc. 45 Figure NM Port numbers for SNMP Agent 46

24 Figure MIB-2 47 Figure udp group 48

25 in TPIP page

26 51 ellular ommunications Networks The architecture of a cellular network : MS BS DB DB MS MS BS MS MS BS MS GMS BS MS BS PSTN PDN 52

6kbps~2Mbps Multimedia transmission (e.g.

27 WDMA hannelization UE Picture source: Broche of Motorola 53 Node-B (3G Base Station) 3G WDMA UE (User Equipment) 3G Variable rate: 9.6kbps~2Mbps Multimedia transmission (e.g., WDMA OVSF codes) Base station Picture source: Nokia 3G handset 54

28 3G WDMA (cont.) ITU 3G Approvals cdma2000: 3.75MHz (US) WDMA: (Europe, Japan) 5MHz (TDD) 10MHz (FDD) TD-SDMA: 1.6MHz (hina) DMA( 分頻分碼 ) 55 Properties: 1. Variable rate (2 n * basic rate) 2. Orthogonal (RAKE correlation) WDMA hannelization (cont.) 1 ch, = {1} 1 SF=1 Level 0 1 ch, = {1,1} 2 ch 2 = {1, 1}, 2 SF=2 Level 1 1 ch, = {1,1,1,1} 2 ch 4 3 ch 4 ch = {1,1, 1, 1}, 4 = {1, 1,1, 1}, 4 = {1, 1, 1,1}, 4 SF=4 Level 2 1 ch,8 2 ch,8 3 ch,8 4 ch,8 5 ch,8 6 ch,8 7 ch,8 8 ch,8 SF=8 Level 3 One leaf code = 1R b SF=256 Level 8 ode tree for generation of OVSF codes PS: OVSF=Orthogonal Variable Spreading Factor 56

29 -plane signalling G Nt D U-plane information Picture source: 3GPP WDMA UuS boundary RR control L3 control control control control PDP PDP Radio Bearers L2/PDP BM L2/BM RL RL RL RL RL RL RL RL L2/RL Logical hannels MA L2/MA Transport hannels PHY L1 57

OSI OSI 15% 20% OSI OSI ISO International Standard Organization 1984 OSI Open-data System Interface Reference Model OSI OSI OSI OSI ISO Prototype Prot

OSI OSI OSI 15% 20% OSI OSI ISO International Standard Organization 1984 OSI Open-data System Interface Reference Model OSI OSI OSI OSI ISO Prototype Protocol OSI OSI OSI OSI OSI O S I 2-1 Application