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Chapter 13 Network Management and Operations
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Agenda Objectives Scope Functions Software Security Physical Facility Staffing
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Objectives Availability Reliability Response time Real time problem solving Other?
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Scope Data Network Voice network Wireless network Communication hardware –Workstations –Cluster controllers –Communication lines –Line concentrators –Multiplexers –Front-end processors Communication software Security
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Importance Asset Resources Growth
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Functions Network operations Problem management Performance measurement and tuning Configuration control Change management Management reporting
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Network Operations Starting and stopping Monitoring –Problem identification –Problem solution Collecting statistics –Performance –Usage trend
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Problem Management Help desk: list of standard questions Problem log –Date and time –User name –Problem –Symptoms Trouble ticket –Date and time –Action Auto trouble tracking systems (artificial intelligence or expert systems)
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Problem Escalation Procedure Technical –Level 1 (help desk employee) –Level 2 (technician) –Level 3 (network specialist) Managerial –Desk supervisor –Network operation supervisor –Telecommunication manager –Chief information officer
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Problem Solving Reconfiguration –Backup hardware & lines (alternatives) Diagnosis and repair –Hardware testing equipment –Protocol analyzer –In house or vendor
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Performance Measurement Service level agreement –Availability (hours) –Reliability (percentage of hours, mean time between failure, mean time between repair) –Response time (percentage of seconds) Performance history –Management information database (MIB): response time, circuit utilization, circuit errors, transaction mix, routing, buffer utilization, queue lengths, processing time –Network management protocol for exchange information between central network management computer and end stattions : Simple Network Management Protocol (SMP), Common Management Information Protocol (CMIP) Voice network: carrier or PBX.
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Configuration Control Documentation –Inventory (hardware and software) Name, type, model serial site code, account billed, price –Network, circuit, and wiring diagrams –Emergency phone number –Vendor manuals & contact –Disaster recovery plans –Problem solving and routine procedures Update Off-site back up copies
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Change Management Request Coordination –Weekly change coordination meeting –Scheduled weekend changes Documentation updates
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Management Reporting Short, daily, morning meeting Monthly performance & utilization report Management summary for different levels
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Network management Software Simple Network Management Protocol (TCP/IP) –Oldest, Limited security, widely use, standard for multi-vendors –Managed devices, agents, network management systems (NMS), and remote monitoring (RMON) –SNMPv1 and SNMPv2 are incompatible Common Management Information Protocol (ISO) –Not popular Netview, Netview/6000 (IBM) –Open Network Architecture (ONA) –Capacity planning, network financial administration, support for heterogeneous network Netware Management System (Novell) –Use command
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Network Security Physical security –Lock and key Access control –Password and ID –Call back and handshake for remote access –Firewall: packet-level (address), application-level (entire message), and proxy server Personal security –Security checking for new employees, badge, ID card, security awareness program, education, and prevention Disaster recovery planning –Adequate emergency communication service
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Network Control Center Raised floor -12 inches high Smoke and heat detectors Extinguishing equipment (water or carbon dioxide) Label equipment and cable PBX & other voice equipment Flexible for expansion Help desk
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Staffing Operation Group Help desk: experienced or inexperienced using script Hardware technicians: electrical and electronic background Supervisor: technical and managing skills On going training
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Outsourcing Not vital to the business Considering factors –Location for outsourcing company staff –Service guarantees –Existing employee moral –Cost/benefits analysis AT & T and state of Wisconsin –Wisconsin Network Management Center
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Communications Technical Support Functions Supporting communications software Technical problem solving Network analysis and design Performance analysis and tuning Hardware evaluation Programming Consulting
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Staffing Technical Support Intelligent Analytical Technical Curious Self-motivating Independent
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Points to Remember Objectives Scope Functions Software Physical Facility Security Staffing
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Discussion Develop a telecommunication disaster and recovery plan for a bank. Develop a telecommunication disaster and recovery plan for CSUS.
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