Hybrid-Cloud-Observability-Network-Monitoring Exam Dumps - SolarWinds Certified Professional Questions and Answers

Comprehensive and Detailed Explanation From Exact Extract:

When you observe an "unknown traffic event" in the SolarWinds web console, it usually means the collector is receiving NetFlow or other flow data from a device that is not currently managed or monitored in the SolarWinds database. The collector can receive flows from any device, but if the device is not added or properly monitored, the traffic will show up as "unknown" because SolarWinds cannot associate the flows with a known interface or device.

Comprehensive and Detailed Explanation From Exact Extract:

Device Studio is specifically designed to build custom pollers for missing or vendor-specific metrics that are not natively included in node details. It is best used to enrich the node details with custom OID-based metrics from devices.

From the documentation:

“Use Device Studio to build pollers for new metrics not present in the default node details, particularly for custom or third-party equipment.”

Comprehensive and Detailed Explanation From Exact Extract:

The Universal Device Poller (UDP) in SolarWinds NPM allows users to monitor any SNMP-exposed value, including interface traffic, UPS battery status, and CPU temperature, provided the device's MIB exposes the relevant OIDs. Users configure the UDP to poll these custom OIDs, making it a flexible option for monitoring a wide range of metrics across diverse devices.

Comprehensive and Detailed Explanation From Exact Extract:

In NetPath visualizations, the thickness of the connection lines represents the likelihood or frequency of traffic using that path.

From the documentation:

“In NetPath, thicker lines between nodes indicate a higher probability that traffic will flow along that path. This visualization is based on the frequency of successful probes and actual traffic analysis.”

Comprehensive and Detailed Explanation From Exact Extract:

SolarWinds provides a MIB Browser utility that lets you search and verify whether a specific object ID (OID) exists in the SolarWinds MIB database. By entering the OID in the MIB Browser, you can confirm its presence and also test polling against the device.

The documentation states:

"Use the MIB Browser to search for and verify OIDs in the SolarWinds MIB database. The tool also allows you to test poll the device to ensure the OID is being returned."

Comprehensive and Detailed Explanation From Exact Extract:

If default SNMP polling is not returning data for a new device but works for others, it is likely that the device uses unique or vendor-specific MIBs not present in the SolarWinds MIB database. Updating the MIB database and building custom pollers (UDPs) for those MIBs allows you to collect the desired metrics. An SNMP walk may help you identify the OIDs, but building and assigning pollers is necessary for ongoing monitoring.

Comprehensive and Detailed Explanation From Exact Extract:

SolarWinds Hybrid Cloud Observability supports multiple industry flow protocols:

J-Flow: Supported and commonly used by Juniper devices.

NetFlow v9: Supported, providing flexible flow data and templates.

sFlow: Supported, widely used in vendor-agnostic environments.

NetFlow v6 is not a recognized protocol; SolarWinds documentation does not list it as a supported standard.

"SolarWinds NTA and HCO support NetFlow (v5/v9), sFlow, J-Flow, and IPFIX for collecting and analyzing flow data."

Comprehensive and Detailed Explanation From Exact Extract:

To monitor servers and connections in a load-balancing environment—specifically for F5 BIG-IP load balancers—SolarWinds requires that you:

Enable CLI polling: This is necessary for SolarWinds to collect configuration and health data from network devices.

Enable F5 iControl polling: F5 iControl API allows SolarWinds to collect load balancer details, including virtual servers and pools, for deep monitoring of server and connection health.

Adding Cisco Nexus devices relates to switch monitoring and is not required for F5/BIG-IP load balancer server connection monitoring.

Exact Extract from Official Guide:

“To fully monitor F5 BIG-IP load balancers, enable both SNMP and CLI polling, and configure F5 iControl API credentials for device access and load balancing visibility.”

— (Network Performance Monitor Administrator Guide, “Network Insight for F5 BIG-IP” section)

Comprehensive and Detailed Explanation From Exact Extract:

The Universal Device Poller (UnDP) allows administrators to define custom SNMP OIDs for statistics (like UPS battery status) that are not natively polled. You can assign a new UnDP to an existing node to monitor additional values such as UPS battery status, provided the device supports the necessary OID.

Comprehensive and Detailed Explanation From Exact Extract:

SolarWinds determines node status by polling using ICMP (ping) and SNMP. If ICMP is blocked by a firewall or network device between the polling engine and the monitored node, the node will appear “down” in the web console even though it is actually up. Likewise, if the SNMP credentials configured in SolarWinds are incorrect, the polling engine cannot successfully query the device, leading to a false “down” status.

From the documentation:

“If ICMP packets are blocked or dropped, SolarWinds cannot determine node status, resulting in false down events.”

“Incorrect SNMP community strings or credentials will prevent node polling, and these nodes may appear down in the console.”

Changing the polling interval or node management settings does not directly cause this issue.