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CIT 443: Enterprise Network Management

CIT 443: Enterprise Network Management. FCAPS - Performance Management. Performance Management. The activities necessary to monitor, evaluate, and improve the speed, capacity, responsiveness, flexibility, and/or adaptability of a network and its component systems.

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CIT 443: Enterprise Network Management

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  1. CIT 443: Enterprise Network Management FCAPS - Performance Management

  2. Performance Management • The activities necessary to monitor, evaluate, and improve the speed, capacity, responsiveness, flexibility, and/or adaptability of a network and its component systems.

  3. Benefits of Performance Management • Reduce network overcrowding and inaccessibility • Determine utilization trends • Isolate performance problems • Help determine root cause of performance issues • Capacity planning • Plan for both expansion of existing services and deployment of new services

  4. Purpose of Network Management • Justify the necessity of the network and its components • Provide adequate support for all the business needs • Allow the network to evolve with the business

  5. Performance Management • Extension of fault management - ensure the system runs well. • Determination of quality parameters • Monitor and measure performance parameters • Generate performance reports • Provide information for performance and capacity planning • Be proactive in your assessment of needs

  6. Accomplishing Performance Management • Collect data on current utilization of network devices and links • Analyzing the Data • Real-time graphs • Instantaneous utilization information • Useful for solving real-time problems • Ex. MRTG • Historical data • Useful to determine trends

  7. Thresholds • Define a set value for a statistic that indicates that a serious problem may occur • Automatically take action when a threshold is eclipsed (TRAP) • Send an email / text message / IM • Sound an alarm • Call a pager • Switch to a back-up circuit • Initiate a dial-up link

  8. Affects on performance • Management WILL increase network traffic • Care must be taken to balance management needs with network impact • Polling rates • Fast links are compounding polling rate issues due to the limitations of 64 bit counters - a packet counter that was good for several months at 10 Mbps now wraps in as little as 10 minutes at high bandwidths • Automatic inventory or virus checks can greatly increase login times

  9. PM Tools – Network Traffic • Traffic management tools • Mostly real-time • Some graphing capabilities • Monitor device and link status and utilization • Supported by many NOS platforms (Windows Performance Manager) • Many fuller featured products available from third party vendors • Intel LANDesk Manager • Farallon Computing Traffic Watch

  10. PM Tools – Network Protocols • Protocol analyzers • Can capture and decode packets from the network • Useful for odd and intermittent network problems • Sometimes include a traffic generator to re-create high traffic problems • Some capability included in general management platforms • Specialty products available • Wildpackets Etherpeek, Ethereal (WireShark), Airopeek

  11. PM Tools – Network Equipment • Server monitor products • Most NOS products include some sort of performance management capabilities • Mass storage systems are usually the bottleneck • Memory is the second most important system • Network cards are the next bottleneck • CPU performance is usually not a huge factor for file/print servers

  12. PM Tools PM Tools – Network Equipment • Switch, Bridge and Router monitor products • Well placed to collect traffic information and relay it to a management platform (via SNMP?) • Span switch ports • Most hardware now includes management modules that provide management capability

  13. Actions to Improve Performance • Upgrade LAN to Gigabit Ethernet • Utilize Aggregate Links • Implement VLANs to limit cross-business unit broadcasts • High-speed interconnects on Servers • Others?

  14. Market Trends • Cross-Silo Automation • Componentry & Integration • Move towards a more business-aligned management architecture • Vendor Framework Integration • Combining Network Management with “Systems” Management • Deployment of new network services • VoIP, Streaming Media, Wireless Applications • Integration of Security throughout all aspects of Network Management

  15. Performance Management –Network Elements • PBX • Hubs • Routers • Switches • Servers • Workstations • Firewalls • Wireless Access Points • Printers • Power Management Systems • Network SCADA Systems • Temperature Management Systems (HVAC) • Home Appliances? • Others?

  16. Other terminology • Service Availability • Service Management • Network Quality Management • Quality of Service • Network Monitoring & Measuring • Network Baselining

  17. Reading Assignment • Two Whitepapers • Performance Management • Bandwidth Management

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