Overview:
This article define a network management strategy for network management. And 'necessary to define how the equipment is going to be monitored and determine if the current management strategy is adequate or if new applications, equipment, protocols and processes must be identified. management components are then integrated with infrastructure and security. These primary elements comprise any well-defined management strategy and should be considered when developing your strategy.
network management strategy
· Network Management Groups
· SNMP Applications
Devices · monitored and events
network management groups
· fault
· performance
· device
· Security
· Change
· Configuration
· Implementation
Fault Management
This describes the pro-active monitoring of devices, circuits, and servers for errors. It specifies what events are monitored and thresholds for generating alarms. Once the alarms are generated, there is an escalation process to resolve any errors. It could be a circuit problem, a router interface or a server link. Service contracts with local network providers and long distance IXC for circuit repair are important as is vendor equipment repair contracts. Out-of-band router management allows troubleshooting and configuration of routers with an attached modem. The technician is not based on the primary circuit to reach the router. They use a separate analog phone line with a modem connected to the auxiliary port to the router. Escalation support processes are defined that are used by network operations center (NOC) employees for effective troubleshooting. These are some typical support activities:
· support levels Tier Established with well-defined tasks for each group Tier
· severity levels defined and what level group is responsible
· defined response times for severity levels
· applications for trouble ticket
[1945001proceduredirisoluzionedeiproblemi] · established for employees· Root Cause Analysis
· of the investigation support groups to identify skill levels, deficiencies and plan for training programs to address this problem.
Performance Management
This describes the pro-active monitoring of circuit modules and levels of server performance. That translates to monitoring and reporting on trends with device CPU, memory and link utilization, the use of circuit bandwidth, server CPU, memory and input / output speed. As well campus segments and device interfaces should be monitored for collisions, CRC errors and packet drops. planning bandwidth capacity is a bandwidth monitoring trends continuing process of use for the enterprise network and consideration of business growth estimates. This information is used for the development of a provisioning strategy addressing company we need bandwidth capacity. The dynamic nature of an enterprise network is such that new locations, employees and application deployments will increase network traffic and utilize the available bandwidth. Trend monitoring tools are typically run from the network operations center and focus on enterprise traffic patterns and performance of circuits, routers and switches.
RMON is a popular protocol that is utilized for monitoring router, switch and campus segment performance with probes at various venues across the enterprise. Information can be collected at all levels of the OSI model for statistics on utilizations, packet size and errors. In addition there are specific SNMP applications designed for the planning of bandwidth capacity. The bandwidth provisioning strategy could involve faster campus and WAN equipment, increased bandwidth for circuits, quality of service protocols or a combination of any of these elements.
Security Management
This describes the device management and server security that is consistent with the company's policies. Typical devices are firewalls, routers, switches, TACACS servers and RADIUS servers. Security includes community strings, the password assignment, change policy, with safety line and Internet security.
Device Management
This describes the maintenance of an inventory database that lists all campus and WAN devices, modules, serial numbers, IOS versions , server documentation and design. It 'important that companies keep information on these assets for support and warranty issues.
Configuration Management
This describes the process of configuring, and documenting devices, circuits and servers on the corporate network. We must establish a process for configuring new equipment, with current and maintain TFTP server editing equipment. These scripts should be saved to TFTP servers and documented for later use with subsequent configurations. Build a directory structure with a folder for each equipment type and subdirectories for model types.
Change Management
This describes a process for approving and coordinating device configuration changes and is essential for network availability. Staff members that make unapproved changes without alerting affected departments can cause problems if the changes do not work and are made during the busiest hours of the day. Any changes to the production network should involve at least the network operation center and someone from the engineering group. So it could be important to let the application developers know of network changes. Any change management process should have these components:
review process
· departments concerned consider the impact of changes and discuss concerns
· Proof of concept and
of test quality assurance · Develop a timeline for changes approved by all departments
· departments provide contingencies should there be network issues
· process approval: software manages and records approvals from groups
· proactive monitoring of unauthorized changes
Implementation management
This describes the process of managing new implementations such that there is no disruption to the production network and the implementation is efficient and effective. These are some activities network operations center (NOC) that should be part of a typical implementation management strategy. Consider vendor support contracts for support with configuration scripts, testing, and design since that will promote an effective implementation.
[1945001] Standard Network Operations Center Activities:1) Turn on circuits and ping all new devices to verify connectivity
2) change the SNMP applications at network operations center for proactive fault and performance monitoring of new devices
devices 3) Make sure they are SNMP enabled and security is applied
4) Update the inventory database and save configuration scripts for a server TFTP
SNMP applications
there are a myriad of SNMP applications on the market that focus on managing servers, devices and circuits. An enterprise customer sometimes employ several applications including their own software that addresses each management group. The SNMP version that is implemented should be noted at each device and server. This is a list of popular commercial applications and how it might be used.
monitored devices and events
Typical devices such as routers, switches and circuits are configured and monitored with SNMP applications. The thresholds are defined for each event that will trigger an alarm when that is exceeded. A polling interval is configured for each event, which describes the time interval between sending of status information from the device to the network management station. An example could be a threshold of 60% of the routers use the CPU and a polling interval of 10 minutes.
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