One of the most crucial components of the network is
monitoring, which has been reiterated a lot of times throughout this document.
It’s only with the continuous monitoring that network administrators may
maintain high performance IT infrastructure for organizations.
Aside from the common practices that IT experts should know,
there are also some best practices are applicable in network monitoring. While
the common practices define the basic components, which are important for
network monitoring and applicable to each network, the best practices in
network monitoring is a guideline in implementing a great network monitoring
strategy. Adopting best practices may help network administrators streamline
network monitoring to resolve and determine problems much quicker with less
MTTR.
Baseline Network Behavior
For you to determine the potential problems even before the
users start complaining, the administrator has to be aware of what’s typical in
the network. Baselining the behavior of the network over several weeks or
months will help the network administrator understand what network’s normal
behavior is. When baseline or normal behavior of the different services and
elements in the network are understood, formation may be used by administrator
to set the threshold values for alerts.
When elements in the network do not function well, some
metrics associated with node performance will display deviation from their mean
value. For instance, the core switch’s temperature might shoot-up. The increase
in the temperature may be because of an increase in the usage of CPU on the
switch. Understanding CPU utilization and normal temperature of the device
would help any network administrator to detect deviation and take some
corrective actions before malfunction happens.
Being knowledgeable of the baseline behavior when it comes
to the network elements will help the network administrator to decide the
thresholds in which an alert will be triggered. It also helps in proactive
troubleshooting and prevents downtime in the network instead of being reactive
after the users begin complaining.
Escalation Matrix
Probably, one of the many reasons why potential network
problems become an actual network issue is because the alerts triggered based
on the threshold are ignored or the one responsible isn’t alerted. In a big
network, there could be different administrators or individuals who take care
of various aspects of the network. There could be the security administrator
who looks at the firewall devices, systems admin, admin responsible for
virtualization, and Intrusion Prevention Systems.
Whenever setting up reporting and monitoring, the
organization must have a policy on who should be alerted when malfunction
occurs or a possible issue is detected. Based on the policy, the person
administering the network that’s having a problem should be alerted. It could
reduce the needed time for analysis that reduced MTTR. Aside from alerting the
network administrator, escalation matrix is necessary as well. Escalation plan
ensures that the issues are resolved and looked on time. If the person in
charge of the element isn’t available or might take a long time to solve the
problem, implementing escalation matrix can be the best solution.
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