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Rivier College CS575: Advanced LANs Chapter 14: Network Management
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Transcript of Rivier College CS575: Advanced LANs Chapter 14: Network Management
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Chapter 14 Network Management 1
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Rivier CollegeCS575: Advanced LANs
Chapter 14: Network Management
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Network Management Overview
0 Network Management Requirements:* Fault Management* Accounting Management* Configuration and Name Management* Performance Management* Security Management
0 Network Management Systems0 Simple Network Management Protocol (SNMP):
Basic Concepts and SNMP Protocol Specifications* SNMPv2* SNMPv3
0 LAN-Specific Network Management 0 LAN Network Control Center
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OSI Management Functional Areas
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Elements of a Network Management System
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Network Management Entity (NME) Tasks
0 Collect statistics on communications and network-related activities.0 Store statistics locally.0 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.
0 Send messages to the NCC when local conditions undergo a significant change.
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Simple Network Management Protocol (SNMP)
0 Network Management Model includes the following:
0 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.
0 Management Agent: Key platforms (hosts, bridges, routers, hubs) may be equipped with SNMP so that they may be managed from a management station.
0 Management Information Base (MIB) is the collection of objects (resources or data variables) that represent aspects of the managed agent.
0 Network Management Protocol is used for linking the management station and agents. It includes the following key capacities: “Get”, “Set”, and “Notify.”
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Network Management Protocol Specifications
0 Structure and Identification of Management Information for TCP/IP-Based Networks (RFC 1155): Describes how managed objects contained in the MIB are defined.
0 Management Information Base for Network Management for TCP/IP-Based Networks: MIB-II (RFC 1213): Describes the managed objects contained in the MIB.
0 Simple Network Management Protocol (RFC 1157): Describes the protocol used to manage these objects.
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Role of SNMP
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Proxy Configuration
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SNMPv1 Formats
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SNMP Message Fields
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SNMP PDU Sequences
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SNMPv2 PDU Formats
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Example: Distributed Network Management Configuration
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GetBulk Request Command
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SNMPv3 Security Features
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LAN Network Control Center Functions
0 Configuration Functions maintain a directory of names and addresses of resources (terminals, hosts, peripherals, application programs, or utility programs) available on the network.
0 Monitoring Functions (performance monitoring, network status, and accounting).
0 Fault-Isolation Functions.
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Performance Measurement Report