Rivier College CS575: Advanced LANs Chapter 14: Network Management

1. Rivier CollegeCS575: Advanced LANsChapter 14: Network Management Network Management

2. Network Management Overview • Network Management Requirements: * Fault Management* Accounting Management* Configuration and Name Management* Performance Management* Security Management • Network Management Systems • Simple Network Management Protocol (SNMP): Basic Concepts and SNMP Protocol Specifications* SNMPv2* SNMPv3 • LAN-Specific Network Management • LAN Network Control Center Network Management

3. OSI Management Functional Areas Network Management

4. Elements of a Network Management System Network Management

5. Network Management Entity (NME) Tasks • Collect statistics on communications and network-related activities. • Store statistics locally. • Respond to commands from the Network Control Center (NCC), including commands to:1. Transit collected statistics to Network Control Center.2. Change a parameter (e.g., a timer used in a transport protocol).3. Provide status information (e.g., parameter values, active links).4. General artificial traffic to perform a test. • Send messages to the NCC when local conditions undergo a significant change. Network Management

6. Simple Network Management Protocol (SNMP) • Network Management Model includes the following: • Management Station:* MS serves as the interface for the human network manager into the network management system;* MS has a set of management applications for data analysis, fault recovery, etc.* An interface by which the NW manager may monitor and control the network.* The capability of translating the NW manager’s requirements into the actual monitoring and control of remote elements in the network.* A database of information extracted from the MIBs. • Management Agent: Key platforms (hosts, bridges, routers, hubs) may be equipped with SNMP so that they may be managed from a management station. • Management Information Base (MIB) is the collection of objects (resources or data variables) that represent aspects of the managed agent. • Network Management Protocol is used for linking the management station and agents. It includes the following key capacities: “Get”, “Set”, and “Notify.” Network Management

7. Network Management Protocol Specifications • Structure and Identification of Management Information for TCP/IP-Based Networks (RFC 1155): Describes how managed objects contained in the MIB are defined. • Management Information Base for Network Management for TCP/IP-Based Networks: MIB-II (RFC 1213): Describes the managed objects contained in the MIB. • Simple Network Management Protocol (RFC 1157): Describes the protocol used to manage these objects. Network Management

8. Role of SNMP Network Management

9. Proxy Configuration Network Management

10. SNMPv1 Formats Network Management

11. SNMP Message Fields Network Management

12. SNMP PDU Sequences Network Management

13. SNMPv2 PDU Formats Network Management

14. Example: Distributed Network Management Configuration Network Management

15. GetBulk Request Command Network Management

16. SNMPv3 Security Features Network Management

17. LAN Network Control Center Functions • Configuration Functions maintain a directory of names and addresses of resources (terminals, hosts, peripherals, application programs, or utility programs) available on the network. • Monitoring Functions (performance monitoring, network status, and accounting). • Fault-Isolation Functions. Network Management

18. Performance Measurement Report Network Management