NetCrunch uses some intelligent algorithms to optimize its monitoring, ensuring that all the available bandwidth and CPU processing doesn't get consumed by the monitoring process. NetCrunch can associate whole network segments with a particular router or switch, for example, so if a critical piece of infrastructure goes down, the remote networks behind that device will be ignored until the device is restored.
Alerts, Reports And Diagnostics
NetCrunch has a broad range of actions that can be associated with events. At the simplest, a message can be popped onto the console or sent to predefined contacts over SMTP, SMS, pager, ICQ and network broadcasting. NetCrunch manipulates Windows services (such as restarting a problematic service) and can manipulate the power state of an entire PC. It also can be configured to log in to a remote system over SSH, and upload and run a custom script if some user-defined condition is met.
Performance readings can be fed into graphs that show recent activity, and reports can be generated to show the current and long-term performance data for any monitored resource. The graphs are single-element charts and aren't comprehensive enough to compete with specialty tools such as Cacti, but are adequate for most jobs.
NetCrunch includes a set of basic interactive tools for exploring systems, which is useful for building new monitors or when the network fails. The toolkits include standard devices, such as trace route and DNS debuggers, MIB browsers and WMI browsers. Unfortunately, these tools aren't well-integrated into NetCrunch; users can isolate a problem condition, but can't ask NetCrunch to monitor the condition state. Instead, users must rebuild the metrics inside NetCrunch separately.
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