SolarWinds ' log processing policies for svslog (syslog) and traps (SNMP traps) are processed independently and concurrently. This is because syslog and SNMP trap processing are separate services with their own processing pipelines, unlike the global pre and post policies which affect overall log routing or rule order.

Device Studio supports the following data sources:

Calculated result from transformation of polled values: You can apply calculations (such as average, sum, transformation) to the raw polled data.

Polled value by a device on an object ID: Device Studio can directly poll an OID from a device and use its value for monitoring.

Night/day standard deviation and predicted/baseline values are not direct data sources in Device Studio.

This question is defective as written. It says “Choose three,” but SolarWinds capacity forecasting documentation supports all four listed capacity problem areas. SolarWinds states that node capacity includes both CPU load and percent memory usage , volume capacity includes volume usage and exhaustion forecasting, and interface capacity forecasting includes receive/transmit interface utilization thresholds. Therefore, CPU load, interface utilization, memory use, and percent disk usage are all valid capacity forecasting/capacity problem categories. A forced three-answer key would be unreliable and should be corrected, not blindly accepted. The clean correction is to change the item from “Choose three” to “Choose four,” or remove one valid option.

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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.

Unreadable fields in SNMP traps from a device typically indicate either the device is not monitored as a node (so SolarWinds cannot fully parse its SNMP data) or the MIB file for that device is not included in the SolarWinds MIB database, making it impossible to decode certain OIDs.

According to the latest SolarWinds Administrator Guides, integrating Cisco ACI for true Hybrid Cloud Observability involves several coordinated steps:

B. Configure API polling credentials for the APIC cluster under “Settings > All Settings > Manage ACI” in SolarWinds. SolarWinds Hybrid Cloud Observability leverages API-based polling (not only SNMP) to retrieve comprehensive fabric topology, health scores, faults, and logical object inventory (tenants, application profiles, EPGs, etc.). Configuration of API credentials is required to access these features. " For deep ACI monitoring, use API credentials under ' Manage ACI ' . SNMP alone is insufficient for advanced monitoring, object mapping, or health correlation. "

C. Enable NetFlow export from all ACI leaf switches to the SolarWinds collector and import flow definitions in the Platform. NetFlow is essential for capturing east-west and north-south traffic inside the fabric, and SolarWinds uses this flow data for bandwidth analysis and path visualization. " SolarWinds recommends enabling NetFlow export on all leafs and importing flow records to gain traffic visibility inside Cisco ACI environments. "

D. Map tenants, application profiles, and endpoint groups (EPGs) to custom properties for advanced alerting and reporting. Custom properties in SolarWinds allow mapping logical ACI constructs to alert rules, reports, and dashboards for business-centric monitoring. " Map EPGs and application profiles to custom properties for granular alerting and business-aligned dashboards. "

Option A is incorrect because the official guide states that API polling (not just SNMP v3 with plugins) is required for automatic APIC object discovery.

NetPath probes require a supported Windows environment for deployment. According to the SolarWinds documentation, probes can be run from the Hybrid Cloud Observability (HCO) server itself, which must be a Windows server, or from any Windows client computer, including Windows 10. NetPath agents are not available for Linux or for network devices such as routers; the agent cannot be installed on Red Hat Linux or routers.

You can check the status of the flow collector service from the NetFlow collector services section and from NetFlow settings in the SolarWinds web console. These locations provide service health, up/down status, and logs. " Flow and CBQoS sources " and " Top XX receivers " do not display service health.

SolarWinds Hybrid Cloud Observability (HCO) supports capturing flow data and CBQoS data using:

A. IPFIX: (IP Flow Information Export) is the IETF standard for exporting flow information, supported for both flow data and CBQoS.

C. NetFlow: Developed by Cisco, widely used for flow and CBQoS data collection.

J-Flow is primarily for flow data (from Juniper devices), and SNMP is not a flow export protocol.

The documentation states:

" NetFlow (including NetFlow v9) and IPFIX are supported for flow and CBQoS data collection. These standards provide extensive network traffic and QoS visibility within HCO. "

To effectively diagnose a slow connection using NetPath, the following data points are essential:

Date, time, and duration of the performance issue: Helps correlate the problem with specific events or maintenance windows.

IP addresses of the nodes in question: Identifies the exact points in the network path where issues may arise.

Latency and packet loss information: These are core metrics provided by NetPath and are critical for pinpointing where delays and data loss occur.

The SolarWinds documentation states:

" When troubleshooting with NetPath, consider the time frame, the specific nodes (by IP address), and the latency/packet loss details between hops. Alert descriptions are not a primary diagnostic data point in NetPath ' s workflow. "

Unknown flow traffic often occurs when SolarWinds receives flow data from sources not defined in its database, or when flow-enabled devices are not sending data to the expected port.

Add the devices and interfaces to SolarWinds ' database: Ensures flow data is properly associated with monitored objects, resolving the " unknown " status.

Ensure flow-enabled devices send data to the appropriate port: If data is sent to the wrong port, SolarWinds cannot process it correctly, leading to unknown events.

SolarWinds documentation notes:

" Unknown flow traffic typically indicates a mismatch between flow sources and known device/interface configurations, or incorrect UDP port configuration. Registering devices/interfaces and verifying port assignments resolves most unknown flow issues. "

A. Ensuring that firewall rules allow SNMP traffic is essential, especially when monitoring remote site nodes.

C. Basic connectivity should be checked by pinging the node from the SolarWinds application server.

D. If the SNMP community string is changed, the SNMP service on the device must be restarted for the new configuration to take effect.

Option B is not required unless SNMPv3 is specifically being used, and even then, SNMPv2c and SNMPv1 are still widely supported and commonly used.

A. Communication issue exists in new device: If there is an SNMP or network issue, the poller cannot retrieve data.

D. Object IDs (OIDs) are not supported: The new device may not support the same OIDs as the test device, resulting in no data returned.

SolarWinds documentation notes:

" When extending a poller to other devices, ensure network/SNMP communication is successful and that the target devices support the required OIDs. Differences in support or access may cause data collection to fail on some nodes. "

A. A different port is being used: If MSSQL traffic is sent on a port different from the default (1433), SolarWinds may not classify it as MSSQL unless custom mapping is defined.

C. The source or the destination port field is not present: Application mapping relies on port information; missing fields prevent classification.

The documentation states:

" Unclassified traffic may result when known applications use non-default ports or when flow records lack required port information for mapping. "

B. NetFlow data is commonly used to diagnose network performance issues, such as identifying sources of congestion or bottlenecks.

C. NetFlow analysis provides visibility into which applications and endpoints are consuming bandwidth and causing congestion.

User authorization and link status events are not functions of NetFlow; those are handled by other monitoring tools or features.

A. When you probe less frequently, updates are slower but generally more accurate since there ' s less overhead and less chance of missing network changes due to polling overlaps.

C. Probing more frequently results in faster updates but may slightly decrease accuracy due to increased network noise and overlapping probes.

The documentation states:

" A higher probing frequency provides faster updates in NetPath views but can reduce accuracy due to more frequent sampling. Lower frequency means slower updates but typically results in higher accuracy and less system load. "

If the web console shows a router as “down” but it is actually operational:

ICMP is blocked: If the polling engine cannot ping the device, it will be reported as down.

SNMP is blocked: If SNMP polling fails (for devices polled via SNMP), detailed data and status cannot be retrieved, resulting in a down state.

Agent connection issues may apply for agent-based monitoring but are not typical for network routers. Node dependency configuration could affect child node status display but would not cause the parent node to show “down”.

SolarWinds provides several statistics for network capacity planning, most notably:

Memory usage data on nodes: Useful for forecasting resource exhaustion on network devices.

Receive utilization on interfaces: Essential for predicting bandwidth saturation and planning upgrades.

The documentation states:

" Key statistics for network capacity planning include interface utilization trends (receive and transmit) and memory utilization, which allow for forecasting and proactive infrastructure management. "

SolarWinds NTA (and Hybrid Cloud Observability) supports a range of flow technologies including J-Flow (used by Juniper devices) and sFlow (an industry standard for network monitoring and traffic analysis). GFlow and HFlow are not supported flow technologies in SolarWinds ' official documentation.

If a node remains in “unknown” status:

A. Ping device from assigned polling engine: Verifies direct network connectivity from the poller to the node.

C. Verify the appropriate polling method is set for this node: Ensures SolarWinds uses the correct protocol (ICMP, SNMP, WMI, etc.) for monitoring.

D. Verify a ping response for this node is received through the ICMP: Confirms basic reachability and that the node is not blocking ping requests.

Running an SNMP walk (B) can help diagnose SNMP-specific issues but is not always directly relevant to a node simply being in “unknown” status unless SNMP is the configured polling method.

When the SNMP community string is changed on a device, SolarWinds recommends:

Edit the node properties and save the changes.

Update the community string in node properties to match the new value on the device.

" To restore polling, edit the node in SolarWinds, update the SNMP community string in the properties, and save the changes. This ensures that SolarWinds can authenticate and resume polling. Deleting and re-adding the node is not necessary, nor is restarting the SNMP service on the device in most cases. "

To detect duplex mismatches:

The node must be monitored (i.e., managed in SolarWinds).

The node must be in " up " status, so SNMP data about interface status, speed, and errors can be polled and compared.

Description in MIB (A) is not necessary if the device is already SNMP-capable, and " warning " status (C) is a result, not a requirement.