1. 2000/11/30Chin-Kai Wu, CS, NTHU1 A MIB For Video Server System Management David Robinson Don Hooper (Video Interactive Information Services Group, VIISG)

2. 2000/11/30Chin-Kai Wu, CS, NTHU2 Outline Introduction Network Management Concepts Use of SNMP for Management Management of Video Server System DAVIC Server Architecture MIB Structure Security Considerations

3. 2000/11/30Chin-Kai Wu, CS, NTHU3 Introduction – Network Management Concepts Aspects of Management Fault, Configuration, Accounting, Performance and Security Levels of Management Element(hosts and networking equipment) System(elements within the subsystem) Service(services provided by the system as seen by users) Business(business policy)

4. 2000/11/30Chin-Kai Wu, CS, NTHU4 Introduction – Use of SNMP for Management Why SNMP Widely implemented Cheap to implement Functionality sufficient Standard MIB Operations simple – GET, SET, TRAP (PDU) (PDU: Protocol Data Unit) Disadvantage Weak security Inability to return multiple entries from a table or to filter returned values

5. 2000/11/30Chin-Kai Wu, CS, NTHU5 Management of Video Server System - DAVIC Server Architecture S1/2 : for user requests and video stream, high speed S3/4 : for control, low speed Interfaces S5 : for management, separated, use SNMP as access protocol

6. 2000/11/30Chin-Kai Wu, CS, NTHU6 Management of Video Server System - DAVIC Server Architecture(Cont’d) View of Functionality View of Management (Monitoring) InterfacescommunicationDetect loading, error rate Video Server Framework Hardware, middlewareFault, performance Server Gateway Element Process all end user requests for a service Query users’ information for control Streams Element Support VOD, NVOD and broadcast Applications Relate stream with end user and the local access point into the delivery network Applications Element Services RequestsMIB Content ElementManage video content

7. 2000/11/30Chin-Kai Wu, CS, NTHU7 Management of Video Server System – MIB Structure (Stream Element) streamTable Counters: # of streams initiated rejected aborted TRAP: Used to report on exceptional changes in state of a stream

8. 2000/11/30Chin-Kai Wu, CS, NTHU8 Management of Video Server System – MIB Structure (Server Gateway) sessionTable TRAP: Used for unusual events related to sessions

9. 2000/11/30Chin-Kai Wu, CS, NTHU9 Security Considerations Physical Separation “Screend” or Route Filtering Filter access based on the source and destination IP and port number. ( SNMP are carried on UDP with port 161) Community Name Authentication SNMPv2 Security Features