network management network administrators jobs reasons for using network management systems ...
TRANSCRIPT
Lec3: Network Management
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Outline
Network Management
Network Administrators Jobs
Reasons for using Network Management Systems
Analysing Network Data
Points that must be taken into account when managing networks
Benefits of using networks that works full time (7 days X 24 hours)
Steps for Preventive Management (Before the failure occur)
Warnings Classification “Reactions” to Network Management
Components for Network Management System
Reasons for the success of the (SNMP) network management program
What is ISO?
Functions of Network Management based of ISO Model
Additional Main functions for Network management based on ISO model
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Definition of Management
Management in general means:1. To manage.
2. To control.
3. To guide.
4. To treat with care
5. To carry on business
6. To achieve goals
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Network Management
Network Management: It is an approach for managing and controlling network to get the best performance, productivity and availability.
This method in management includes assigning permissions, monitoring errors, configuring network, monitoring users and devices, and connection method.
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Network Management
According to International Telecommunication Union (ITU) definition of network management this includes the following tasks: Monitoring and controlling network performance during real
or actual work in the network (Operation) Doing necessary work to control network directly when
it is required. Improving bandwidth usage Planning for future requirements (development) Business continuity plan (risks)
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Network Administrators Jobs
1. Meeting users needs.2. Adding network services to improve
performance.3. Effective operation of network to get the
best availability with the least percentage of errors.
4. Fast response.5. Using different techniques.6. Managing different sites.
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Reasons for using Network Management Systems
1) The existence of modern and important techniques in the field of
information technology (IT):
a) Bank Networks.
b) Electronic government.
c) Connecting users (the client & the seller)
2) The great expansion of networks
3) Promising benefits of networks (Cost – effective).
4) Improving modern techniques in networking field.
5) Applying different techniques on one network.
6) Reducing the efforts of using large number of specialists &
technicians to monitor the network.
7) Improving network performance.
8) Improving the security of information.
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Analyzing Network Data
1. What are the kind of information exchanged:
data – audio – video – image.
2. Who needs to use the different kind of
information available online.
3. The level of security required in the network.
4. Priority of the required information.
5. Scalability.
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Points that must be taken into account when managing networks
1. Availability.
2. Users cost.
3. Reporting errors.
4. Determining problems and their solutions.
5. Backup and contingency plan.
6. Performance monitor.
7. Maintenance tools.
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Benefits of using networks that works full time (7 days X 24 hours)
Saving time because of using networks at any time.
Saving data transfer
Quality and accuracy
Higher productivity
Great benefits compared to the costs (the benefits
ratio is higher than the loss ratio)
Great reputation for the organization that owns the
network.
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Steps for Preventive Management (Before the failure occur)
A. Exploring the current state of the network
1) What are the devices connected to the network currently?
2) How to configure these devices?
3) What are the current performances of these devices?
4) What are the current errors?
B. Network Activation
1) Determining the route
2) Changing network configuration
3) Replacing network devices
4) Getting previous information about the network
5) Performing statistical analysis to the information.
C. Future Expectation:
1) Where failure could happen?
2) Monitoring sensitive devices
3) Overcoming future mistakes
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Steps for Preventive Management (Before the failure occur)
D. Tracking Updates on the Network
1) Current state of the devices
2) Topography changes
3) Discovering new devices
E. Adding Alerts
1) CPU performance
2) Capacity of storage devices
3) Line mistakes.
4) Connection devices failures
5) Important events on the network
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Warnings Classification “Reactions” to Network Management
1. Inactive
Does not monitor the network
Ignore all alerts
2. Reactive
Does not monitor the network
React to the problems after it happens
3. Interactive
Monitor the network’s components
Analyze the problem to avoid alerts and determine the reason for the problem
4. Proactive
Monitor the network’s components
Determines the reasons for the problem
Solve the problem automatically to reduce idle time of the system
Idle Time of the system : refers to the time when system stops working.
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Components for Network Management System
1. Devices, Applications and routers.2. Network management administrator.3. Network Management Systems.4. Workstations and network tools.5. Alerts and reports.6. User Interface.
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Reasons for the success of the (SNMP) network management program
1. Possibility to get the standards for free.2. Possibility to get the standards from
websites in the form of electronic templates.
3. The continuous development of the standards.
4. Explain the need for some functions through the use of experimental models.
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What is ISO?
Abbreviation of International Organization for Standardization (ISO)
It is an independent international organization to set standards established at 1947
Its main responsibility specialized to set standards in the field of computing and communication.
Its members are from deferent local organizations from different countries.
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Functions of Network Management based of ISO Model
A. Fault ManagementB. Accounting ManagementC. Configuration ManagementD. Security ManagementE. Performance Management
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A. Fault Management
It is a way to determine, restrict and discover faults in the network.
Main functions of fault management:1. Monitoring the network status.
2. Crash management.
3. Restricting faults.
4. Troubleshooting faults.
5. Testing from the beginning to the end.
6. Performing backups.
7. Grouping and saving all alerts in a log file. Example:
Remedy: www.Remedy.com Seugate: www.Seugate.com
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Flow Chart for Fault Management
AlertProblem
Open the Fault Note
Is the solution for
the problem known
YesNo
Analyzing problem and finding the
solution
Finding Reasons
Applying solution
Is the proble
m solved
?
No
Yes
Close the Fault Note
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B. Accounting Management
Accounting management is a method for determining: How users (groups or single) access network
resources? Make sure for the suitable way to access
network resources. Counting the cost for accessing resources by
users (groups or single)
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Main Functions for Accounting Management
1. Pricing.2. Making sure of the bills of the dealers and
suppliers.3. Network usage.4. Restoring strategy when the performance
decrease.5. Measuring the usage of network resources so
that we can calculate the benefits from these resources.
Example:www.cbis.com
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C. Configuration Management
It is a way for determining, monitoring and modifying the setup of devices.
Main functions for configuration management1. Processing services requests.
2. Monitoring modification management.
3. The status of network topology and storage devices.
4. Storage management and restoring information. Example:
www.openview.hp.com Cisco work
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D. Security Management
It is a way for controlling the access to network resources (update – allow access – don’t allow access – alert)
Main functions for security management:1. Setting access lists on routers (fire walls) so that passwords are
maintained and updated regularly to access critical resources in the network.
2. Controlling access to network resources based on internal instructions so that no one ruin information intentionally or unintentionally.
3. Monitoring users and how they use network resources.
4. Determining critical network resources including systems and files.
5. Monitoring access points to critical network resources.
6. Analyzing risks and reviewing the security of the network. Example:Checkpoint - lucent
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E. Performance Management
Measuring the network resources usage, and it is a way to measure the performance of all network components.
Main functions for performance management:1. Measuring performance (connection – load of the network)
2. Monitoring performance (the delay in responding to a request)
3. Determining the highest level of performance.
4. Analyzing performance.
5. Using standards to improve network performance.
6. Using simulation system to plan for future improvements on network performance.
Example:www.proactivenet.com www.ganymede.com
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Specification of Network Management Architecture
Determining access permissions and boundaries that should not be crossed
Analyzing data & information to set the highest performance level
Gathering information & variable & giving it to the network administrator
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Additional Main functions for Network management based on ISO model
A. Capacity Planning Management
B. Strategic Planning Management
C. Operation Support Management
D. Programmability Management
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A. Capacity Planning Management
1. Accurate setting of network regularly.
2. Software updates such as (adding or
removing technologies.
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B. Strategic Planning Management
1. Part of the management plan where new applications are managed & rearranged.
2. Benefits & expected cost.3. Emergency plan.4. Future planning for improving
applications.5. Future improvement for network to keep
up improvement for performance, users , and applications.
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C. Operation Support Management
1. Managing employees and technicians in
their training and needs and job position.
2. Managing network resources.
3. Maintenance management.
4. Managing information flow & all network
events.
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D. Programmability Management
Organizing management systems to match with network management in the term of system features, reports and other choices.