Management Tools, Systems and Applications. Network Management

Transcription

1 Management Tools, Systems and Applications Network Management

2 Lectures Schedule Week Week 1 Topic Computer Networks - Network Management Architectures & Applications Week 2 Network Management Standards Architectures & Applications Week 3 Simple Network Management Protocol - SNMP v1, ASN, MIB, BER Week 4 Network Management Functions - Fault Week 5 Simple Network Management Protocol - SNMP v2 - Configuration Week 6 Network Management Functions - Accounting Week 7 Midterm Week 8 Simple Network Management Protocol - SNMP v3 - Performance Week 9 Network Management Functions Security 1 Week 10 Network Management Functions Security 2 Week 11 Remote Network Monitoring RMON 1, RMON 2 Week 12 SLA Week 13 Management Tools, Systems and Applications Week 14 NM Project Presentations Week 15 NM Project Presentations

3 The Network Management Platform A software package that provides generic functionality for a variety of network devices Basic functionality includes A GUI A network map A database management system (DBMS) A standard method to query devices A customisable menu system An event system Other features may include Graphing tools Application programming interface System security

4 The Network Management Platform A GUI Standard GUI, platform will behave in a documented manner Conformation by various vendors A network map Useful in all areas Fault isolation Physical and logical configuration Graphical display of device and link performance Can include autodiscovery and automapping

5 The Network Management Platform A database management system (DBMS) Applications can use for information storage Relationships assists in diagnosis and maintenance A standard method to query devices Must be able to gather information from devices from many different vendors A customisable menu system Enables seamless extensions An event system Logs each event chronologically

6 Network Management Architecture Brief Three most common Centralised Hierarchical Distributed

7 Network Management Architecture Brief Centralised Platform on one computer system Single centralised database Complete backup to separate system for redundancy Gives Network engineer a single point to view ALL alerts and events Security easier to maintain Lacks degrees of redundancy and fault tolerance Traffic load on all network links connected to management site Problems with scalability

8 Network Management Architecture Brief Hierarchical Multiple systems One acting as central server Other acting as clients Key Features Not dependant on a single system Distribution of network management tasks Network monitoring distributed throughout network Centralised information storage Management tasks distributed between central server and clients May make information gathering more difficult and time consuming May result in some devices being monitored twice

9 Network Management Architecture Brief Distributed Combines centralised and hierarchical approaches Uses multiple peer platforms One platform is the leader of a set of peer network management systems Each peer platform can have a complete database of the network Allows it to perform tasks & report back to a central system Advantages Single location for all information, alerts and events Single location to access all management applications Not dependant on a single system Distribution of network management tasks Distribution of network monitoring

10 Network Management Applications The platform provides generic functionality for ALL network devices Network management applications help the network engineer to manage a specific set of devices and services Have the following goals Effectively manage a specific set of devices Avoid functionality overlap with the platform Integrate with a platform through the API and menu system Reside on multiple platforms

11 Choosing a Network Management System A practical approach could be Perform device inventory Prioritise the functional areas of network management Survey network management applications Choose the network management platform

12 Choosing a Network Management System Perform device inventory Identify ALL devices on the network Discovery of manageability Prioritise mission critical devices

13 Choosing a Network Management System Prioritise the functional areas of network management Fault, config, security etc Order will depend upon your organisational environment

14 Choosing a Network Management System Survey network management applications Find applications that help perform YOUR key areas of network management Using apps designed to manage the devices you prioritised allows you to spend resources actively managing the network

15 Choosing a Network Management System Choose the network management platform Ideally all the applications chosen will work on at least one common platform If you have a choice of platforms choose the one with an architecture that resembles the way your organisation plans to manage the network Eg centralised, hierarchical, distributed

16 MRTG F C A P S MRTG (Multi Router Traffic Grapher) mrtg/mrtg.html) and makes nice graphs:

17 Applications F C A P S

18 Globalni pogled Applications F C A P S

19 Applications F C A P S

20 Applications F C A P S

21 Applications HostTopN F C A P S Host 1 Host 2 Host 3 Host 4 Host 5 Host 6 Host 7 Host 8 Host 9 Host Giga Octets

22 Applications F C A P S

23 Applications F C A P S

24 Summary