Non-flow Metrics
The non-flow metrics used in Kentik queries are discussed in the following topics:
Notes:
- Streaming Telemetry is discussed in this article in relation to Kentik's non-NMS ST implementation. For information about ST for Kentik NMS, see NMS via Streaming Telemetry).
- The categorization of metrics in the topics below corresponds to the categories by which they are grouped in the Metrics dialog (see Metrics Dialog UI).
- For general information about metrics in Kentik, see About Metrics.
- For metrics that are device-specific, see Device-specific Metrics.
- Metrics that are available as filter or group-by dimensions are covered in the KB's Dimensions Reference (see Per-flow Metrics).
- In addition to being used for query settings in the Kentik portal, metrics are also used for the Query API.
SNMP Metrics
| Note: Queries using SNMP metrics are subject to the following restrictions: - SNMP metrics cannot be mixed with metrics from any other category. - Results will return only if the query's dimensions are from the SNMP category in the Dimension Selectors. |
Metrics derived from SNMP are covered in the following topics:
About SNMP Metrics
If SNMP polling is enabled on a router (see SNMP OID Polling) then Kentik is able to enrich the KDE with the SNMP-derived metrics listed below. These metrics are stored in Kentik using Universal Data Records (UDR), allowing flexible allocation of data to the columns of the Kentik Data Engine. See also Counter SNMP OIDs.
Note: UDR metrics have no persistent KDE columns.
SNMP Interface Metrics
The metrics listed in the table below are derived by Kentik from data collected from interfaces using the SNMP OIDs covered in Kentik-polled SNMP OIDs.
| Metric in portal | Variations | OID | Calculated as... | Description |
| Bit Rate | - Input - Output |
- ifHCInOctets - ifHCOutOctets |
- Average - 95th Percentile - Max - Total |
Rate of bits received/transmitted on the interface, including framing characters. |
| Packets | - Input - Output |
- ifHCInUcastPkts - ifHCOutUcastPkts |
- Average - 95th Percentile - Max - Total |
Rate of packets, including discards, which were not addressed to a multicast or broadcast address. |
| Errors | - Input - Output |
- ifInErrors - ifOutErrors |
- Average - 95th Percentile - Max - Total |
The number of inbound/outbound packets that contained errors preventing them from being delivered/transmitted. |
| Discards | - Input - Output |
- ifInDiscards - ifOutDiscards |
- Average - 95th Percentile - Max - Total |
The number of inbound/outbound packets that were chosen to be discarded even though no errors had been detected, possibly to free up buffer space. |
| Multicast Packets | - Input - Output |
- ifHCInMulticastPkts - ifHCOutMulticastPkts |
- Average - 95th Percentile - Max - Total |
The number of inbound/outbound packets that were addressed to a multicast address. |
| Broadcast Packets | - Input - Output |
- ifHCInBroadcastPkts - ifHCOutBroadcastPkts |
- Average - 95th Percentile - Max - Total |
The number of inbound/outbound packets that were addressed to a broadcast address. |
SNMP Device Metrics
The metrics listed in the table below are derived by Kentik from data collected from devices made by specific vendors using the SNMP OIDs covered in Vendor-specific SNMP OIDs. The metrics are for an individual component within a device, which is identified with the portal dimension Component (see SNMP Device Dimensions).
| Metric in portal | Variations | Calculated as... | Description |
| CPU | N.A. | - Average - 95th Percentile - Max - Total |
The percent of CPU utilization for the component. |
| Memory Total | N.A. | - Average - 95th Percentile - Max - Total |
The total amount, in bytes, of memory on this component. |
| Memory Used | N.A. | - Average - 95th Percentile - Max - Total |
The amount, in bytes, of memory used on this component. |
| Memory Free | N.A. | - Average - 95th Percentile - Max - Total |
The amount, in bytes, of memory available on this component. |
| Memory Utilization | N.A. | - Average - 95th Percentile - Max - Total |
The percent of memory utilization for the component. |
Streaming Telemetry Metrics
| Note: Queries using Streaming Telemetry metrics are subject to the following restrictions: - Streaming Telemetry metrics cannot be mixed with metrics from any other category. - Results will return only if the query's dimensions are from the Streaming Telemetry category in the Dimension Selectors. |
If streaming telemetry publishing is enabled on a router (see Streaming Telemetry Device Support) then you can run queries in the portal that return the values of ST interface metrics. The metrics that are available for these ST interface queries have the same names as the metrics listed in the table in SNMP Interface Metrics, but they appear in the Streaming Telemetry section of the list in the portal's Metrics dialog (e.g. in Data Explorer).
Note: Streaming Telemetry is discussed above in relation to Kentik's non-NMS ST implementation. For information about ST for Kentik NMS, see NMS via Streaming Telemetry).