Flowmon Collector - Extra Fields
- Last Updated: May 27, 2026
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The Flowmon Collector adds these fields to flow records either automatically if the incoming flow record contains the required data or by enabling the appropriate Collector processing module. For more information about processing modules, see Built-in Collector - Processing Modules.
| PEN | ID | Field | Description | Length (bytes) | Collector Processing Module |
|---|---|---|---|---|---|
| - | 16 | src autonomous-systems (IPFIX_bgpSourceAsNumber) | The autonomous system (AS) number of the source IP address. If AS path information for this Flow is only available as an unordered AS set (and not as an ordered AS sequence), then the value of this Information Element is 0. | 4 | Autonomous system list |
| - | 17 | dst autonomous-systems (IPFIX_bgpDestinationAsNumber) | The autonomous system (AS) number of the destination IP address. If AS path information for this Flow is only available as an unordered AS set (and not as an ordered AS sequence), then the value of this Information Element is 0. | 4 | Autonomous system list |
| - | - | src hostname | The captured hostname for the source IP address, if available. | any | DNS information |
| - | - | dst hostname | The captured hostname for the destination IP address, if available. | any | DNS information |
| - | - | src country | The country code (ISO 3166-1 numeric) for the source IP address, as determined by geolocation. | 2 | GeoIP information |
| - | - | dst country | The country code (ISO 3166-1 numeric) for the destination IP address, as determined by geolocation. | 2 | GeoIP information |
| - | - | npm-server-response-time-min | The minimum server response time (SRT) observed for the flow. | 4 | Normalize flow records |
| - | - | npm-server-response-time-max | The maximum server response time (SRT) observed for the flow. | 4 | Normalize flow records |
| - | - | dns-response-info | Arbitrary DNS response data, such as resource record data or additional information, captured as a string or binary blob. | any | Normalize flow records |
| 39499 | 1 | http-host (IPFIX_INVEA_HOST) | HTTP Hostname string (last 32 bytes). | any | Normalize flow records |
| 39499 | 2 | http-url (IPFIX_INVEA_URL) | HTTP URL string (first 64 bytes). | any | Normalize flow records |
| 39499 | 69 | npm-round-trip-time (IPFIX_INVEA_NPM_RTT) | Round trip time. | 4 | Normalize flow records |
| 39499 | 70 | npm-server-response-time (IPFIX_INVEA_NPM_SRT) | Server response time. | 4 | Normalize flow records |
| 39499 | 71 | npm-tcp-retransmission (IPFIX_INVEA_NPM_RETRANSMISSION) | Retransmissions. | 4 | Normalize flow records |
| 39499 | 111 | dns-flags-codes (IPFIX_INVEA_DNS_FLAGS_CODES) | DNS Flags (includes Operation Code, Response Code, Query/Response flag). | 2 | Normalize flow records |
| 39499 | 354 | tls-signature-algorithm (IPFIX_FLOWMON_TLS_SIGNATURE_ALG) | TLS signature algorithm | 2 | Normalize flow records |
| 39499 | 355 | tls-public-key-algorithm (IPFIX_FLOWMON_TLS_PUBLIC_KEY_ALG) | TLS public key algorithm | 2 | Normalize flow records |
| 39499 | 356 | tls-public-key-length (IPFIX_FLOWMON_TLS_PUBLIC_KEY_LENGTH) | TLS public key length | 4 | Normalize flow records |
| - | - | src user-id | The user identity (for example login name or UID) associated with the source of the flow. | any | User identity |
| - | - | dst user-id | The user identity (for example login name or UID) associated with the destination of the flow. | any | User identity |
| - | - | listening-port-name | The name or label assigned to the listening port (for example service name or custom label). | any | Enabled by default |
| - | - | source-group-id | An identifier for the group or set of sources associated with the flow, used for grouping or aggregation. | 2 | Enabled by default |
| - | - | start-time-orig | The original timestamp when the flow was first observed in the forward direction. | 8 | Enabled by default |
| - | - | end-time-orig | The original timestamp when the flow was last observed in the forward direction. | 8 | Enabled by default |
| - | - | uuid | A universally unique identifier (UUID) assigned to the flow record for correlation or tracking. | 16 | Enabled by default |
| - | 32 | icmp-type-code4 (IPFIX_icmpTypeCodeIPv4) | Type and Code of the IPv4 ICMP message. The combination of both values is reported as (ICMP type * 256) + ICMP code. | 2 | Enabled by default |
| - | 38 | engine-type (NF9_ENGINE_TYPE) | Type of flow switching engine: RP = 0, VIP/Linecard = 1. | 1 | Enabled by default |
| - | 39 | engine-id (NF9_ENGINE_ID) | ID number of the flow switching engine. | 1 | Enabled by default |
| - | 130 | exporter4 (IPFIX_exporterIPv4Address) | The IPv4 address used by the Exporting Process. This is used by the Collector to identify the Exporter in cases where the identity of the Exporter may have been obscured by the use of a proxy. | 4 | Enabled by default |
| - | 131 | exporter6 (IPFIX_exporterIPv6Address) | The IPv6 address used by the Exporting Process. This is used by the Collector to identify the Exporter in cases where the identity of the Exporter may have been obscured by the use of a proxy. | 16 | Enabled by default |
| - | 139 | icmp-type-code6 | Type and Code of the IPv6 ICMP message. The combination of both values is reported as (ICMP type * 256) + ICMP code. | 2 | Enabled by default |
| - | 149 | source-id | Observation domain ID or source ID for s-flow. | 4 | Enabled by default |
| - | 156 | start-time (flowStartNanoseconds) | The absolute timestamp of the first packet of this Flow. | 8 | Enabled by default |
| - | 157 | end-time (flowEndNanoseconds) | The absolute timestamp of the last packet of this Flow. | 8 | Enabled by default |
| - | 176 | icmp-type4 (IPFIX_ICMP_TYPE) | ICMP type value. | 1 | Enabled by default |
| - | 177 | icmp-code4 (IPFIX_ICMP_CODE) | ICMP code value. | 1 | Enabled by default |
| - | 178 | icmp-type6 (IPFIX_ICMP_TYPE_IPV6) | ICMP IPv6 type value. | 1 | Enabled by default |
| - | 179 | icmp-code6 (IPFIX_ICMP_CODE_IPV6) | ICMP IPv6 code value. | 1 | Enabled by default |
| 39499 | 563 | received-time | The timestamp when the flow record was received by the collector. | 8 | Enabled by default |
| 39499 | 564 | sampling | The sampling interval or rate used for flow data collection (for example 1 out of N packets). | 8 | Enabled by default |