Documentation forNetwork Performance Monitor
Monitoring network performance is a key capability of SolarWinds Observability Self-Hosted (formerly Hybrid Cloud Observability) and is available in the Essentials edition. Network Performance Monitor (NPM) is also available in a standalone module.

Node variables for Network Atlas tooltips

Variable

Description

${AgentPort}

Node SNMP port number.

${Allow64BitCounters}

Node allows 64-bit counters (1), or not (0).

${AvgResponseTime}

Average node response time , in msec, to ICMP requests.

${BlockUntil}

Day, date, and time until which node polling is blocked.

${Caption}

User-friendly node name.

${Community}

Node community string.

${CPULoad}

Node CPU utilization rate at last poll.

${CustomPollerLastStatisticsPoll}

Day, date, and time of last poll attempt on node.

${CustomPollerLastStatisticsPollSuccess}

Day, date, and time that node was last successfully polled.

${DateTime}

Current date and time. (Windows control panel defined “Long Date” and “Long Time” format).

${Description}

Node hardware and software.

${DNS}

Fully qualified node name.

${DynamicIP}

If node supports dynamic IP address assignment via BOOTP or DHCP (1); static IP address return (0).

${EngineID}

Internal unique identifier of the polling engine to which node is assigned.

${External}

States if node is currently designated as external.

${GroupStatus}

File name of status icon for node and its interfaces.

${IOSImage}

Family name of Cisco IOS on node.

${IOSVersion}

Cisco IOS version on node.

${IP_Address}

Node IP address.

${LastBoot}

Day, date and time of last node boot.

${LastSync}

Time and date of last node database and memory synchronization.

${MachineType}

Node manufacturer or distributor and family or version information.

${MaxResponseTime}

Maximum node response time , in msec, to ICMP requests.

${MemoryUsed}

Total node memory used over polling interval.

${MinResponseTime}

Minimum node response time , in msec, to ICMP requests.

${NextPoll}

Day, date and time of next scheduled node polling.

${NextRediscovery}

Time of next node rediscovery.

${NodeID}

Internal unique identifier of node.

${NodeName}

Node host name. Defaults to node IP address ${IP_Address} if host name does not resolve.

${ObjectSubType}

States if node supports SNMP or is ICMP‑only.

${PercentLoss}

ICMP packet loss percentage when node last polled.

${PercentMemoryUsed}

Percentage of total node memory used over polling interval.

${PollInterval}

Node polling interval, in seconds.

${RediscoveryInterval}

Node rediscovery interval, in minutes.

${ResponseTime}

Node response time, in milliseconds, to last ICMP request.

${RWCommunity}

Node read/write community string; acts as security code for read/write SNMP access.

${Severity}

A network health score providing 1 point for an interface in a warning state, 1000 points for a down interface, and 1 million points for a down node.

${SNMPVersion}

States the version of SNMP used by the node

${StatCollection}

Statistics collection frequency, in minutes.

${Status}

Numerical node status. For more information see Status Icons and Identifiers.

${StatusDescription}

User-friendly node status

${StatusLED}

File name of node status icon.

${SysName}

String reply to SNMP SYS_NAME OID request.

${SysObjectID}

Vendor ID of the network management subsystem in OID form. Clearly determines the type of node.

${SystemUpTime}

Time, in hundredths of a second, since monitoring started.

${TotalMemory}

Total node memory available.

${UnManaged}

States if node is currently unmanaged.

${UnManageFrom}

Day, date, and time when node is set to “Unmanaged”.

${UnManageUntil}

Day, date, and time when node is scheduled to be managed.

${Vendor}

Node manufacturer or distributor.

${VendorIcon}

File name of node vendor logo icon.