NetFlow v5
See Flow Support for details on flow support in Meridian.
Netflow v5 UDP parser
The Netflow v5 UDP parser accepts packets received by a UDP listener and must forward them to a Netflow v5 adapter.
The Netflow v5 UDP parser supports protocol detection.
Configuration and use
| Parameter | Description | Default |
|---|---|---|
maxClockSkew |
The maximum delta in seconds between exporter and Minion timestamps. |
0 |
clockSkewEventRate |
Rate-limit clock skew events, in seconds. |
3600 |
dnsLookupsEnabled |
Enable or disable DNS resolution for flows. |
True |
The parameter maxClockSkew in your parser definition enables clock skew detection for exporters.
It specifies the maximum delta in seconds between exporter and Minion timestamps.
If exceeded, an alarm will be generated for the exporting device.
The default value is 0, so clock skew detection is disabled.
Furthermore, you can use the clockSkewEventRate parameter to rate-limit clock skew events.
The default is 3600 seconds, so every hour an event will be sent.
|
Netflow v5 adapter
The Netflow v5 adapter handles Netflow v5 payloads received and parsed by by the Netflow v5 UDP Parser. Flows are decoded from the messages into the canonical flow format and published to the flow repository.