Bandwidth usage is the amount of data transferred over a network connection in a given time period. It is an indicator of how much traffic is flowing through a network device or link. Peak network traffic is the highest level of bandwidth usage that occurs during a specific time interval, such as an hour, a day, or a week. Monitoring peak network traffic can help you identify potential bottlenecks, plan for capacity, and optimize network performance. NPM can monitor bandwidth usage on nodes and interfaces using SNMP, WMI, or NetFlow protocols. You can view bandwidth usage charts and reports in the web console, as well as set alerts and thresholds for bandwidth utilization. Reference: Monitor bandwidth usage in NPM; SCP Study Aid - NPM, page 11.

According to the SolarWinds NPM Administrator Guide, you can edit the node properties of any device and change the polling method to suit your needs. The polling method determines what data is collected and displayed for the node. The "Most Devices: SNMP and ICMP" polling method collects and displays the most comprehensive data, including CPU load, memory utilization, interface statistics, and more. The "Status Only: ICMP" polling method only collects and displays the node status, average response time, and packet loss. If you want to monitor the other statistics on switch A, you should change the polling method to "Most Devices: SNMP and ICMP". This will not affect the historical data that has already been collected for switch A, as it will be stored in the database. However, deleting switch A and adding it again, or adding switch A again without deleting it first, will result in losing the historical data or creating duplicate nodes. Reference: SolarWinds NPM Administrator Guide, page 78-79; Polling methods used by Orion

Orion Maps can automatically display the connections between the devices that are monitored by NPM, based on topology data, manual dependencies, or application dependency mapping. However, if some of the devices are not monitored by NPM, or the connections are not detected by any of these methods, you can manually configure the connections between them in Orion Maps. To do this, you need to drag and drop the desired devices from the Entity Library to the map canvas, and then use the Connect tool to draw lines between them. You can also edit the connection properties, such as name, type, and status, to customize the appearance and behavior of the connections. Reference: Create and edit Intelligent Maps, Connect objects on maps manually, Intelligent Maps for SolarWinds Platform products

Network Discovery is a feature of SolarWinds NPM that allows you to automatically discover and add network devices to the Orion Platform for monitoring. You can use Network Discovery to query Domain Controllers in your company domain and then select the Organizational Units (OUs) with the registered devices you want to scan. This way, you can add entities from NPM to monitor for all registered devices in your company domain in a single discovery. The other options are not as efficient or accurate as Network Discovery, as they either require manual addition of each device, or rely on the Domain Controllers to provide the list of registered devices, which may not be up-to-date or complete. Reference:
Discover your network devices and add them to the Orion Platform
Discover devices on your network using Active Directory

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