values at required intervals Application periodically requests a service from a

Values at required intervals application periodically

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values at required intervals · Application periodically requests a service from a service provider Physical Connectivity Testing · Using a cable tester to check that links are not broken
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FAULT MANAGEMENT SUB-CATEGORIES AND RELATED ACTIVITIES Software Connectivity Testing · Using an application that makes a request of another device that requires a response. q The most often application for this is Ping.Exe. It calls the Internet Control Message Protocol ( ICMP) which sends periodic Echo Request messages to a selected device on a TCP/IP network Device Configuration · Devices are configured conservatively to minimize chances of dropped packets. SNMP Polls · Devices are periodically polled to collect network statistics Fault Reports Generated · Thresholds configured and alarms generated · Text media used for report · Audio media used for report · A color graphical display used to show down devices · Traffic Monitored · Remote Monitors used · Protocol analyzers used · Trends · Graphical trends generated to identify potential faults
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CONFIGURATION MANAGEMENT Configuration Management The process of finding and setting up (configuring) network devices Automated configuration is becoming a more important part of network management as the sizes of networks grow
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CONFIGURATION MANAGEMENT SUB-CATEGORIES AND RELATED ACTIVITIES Configuration (Local) · Choice of medium access protocol · Choice of correct cabling and connectors · Choice of cabling layout · Determining the number of physical interfaces on devices · Setting device interface parameter values q Interrupts q I/O Addresses q DMA numbers q Network layer addresses (e.g. IP, NetWare, etc) · Configuration of multiport devices (e.g. hubs, switches and routers) · Configuration (Remote) · From the network management station q Disabling device ports q Redirecting port forwarding q Disabling devices q Comparing current versus stored configurations q Configuring routing tables · Verifying integrity of changes
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CONFIGURATION MANAGEMENT SUB-CATEGORIES AND RELATED ACTIVITIES Configuration (Automated) · Using the Dynamic Host Configuration Protocol (DHCP) to configure IP addresses · Using Plug and Play enabled NICs for automatic selection of interrupts and I/O addresses · Domain Name Services (DNS) addresses · Trap messages from agents
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CONFIGURATION MANAGEMENT SUB-CATEGORIES AND RELATED ACTIVITIES Inventory (Manual) · Maintaining records of cable runs and the types of cables used · Maintaining device configuration records · Creating network database containing for each device: q Device types q Software environment for each device q operating systems q configuration files (.ncf, .ini, .sys) q vendor contact information q IP address q Subnet address Inventory (Automated) · Auto-discovery of devices on the network using an NMS · Auto-determination of device configurations using an NMS · Creation of a network database · Auto-mapping of current devices to produce a network topological map
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Types of Network Management Configuration Network Management Configuration Distributed Configuration Centralized Configuration
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Probe =remote monitor Probe = Remote Monitor NMS = Network Management System
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  • Spring '17
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