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CoreFlow
2 years ago

Flow Ingest: Support for MPLS Label 3

Kentik now supports collection of the NetFlow and IPFIX fields for position 3 MPLS Label in the label stack , which we previously not collected from the received flows. The related fields is shown in tables below:

NetFlow v9 VLAN fields:

Field TypeValueLength (bytes)Description
MPLS_LABEL_3723MPLS label at position 3 in the stack. This comprises 20 bits of MPLS label, 3 EXP (experimental) bits and 1 S (end-of-stack) bit.

Resource: https://www.cisco.com/en/US/technologies/tk648/tk362/technologies_white_paper09186a00800a3db9.html

IPFIX VLAN fields:

ElementIDNameAbstract Data TypeDescription
72mplsLabelStackSection3octetArrayThe Label, Exp, and S fields from the label stack entry that was pushed immediately before the label stack entry that would be reported by mplsLabelStackSection2. See the definition of mplsTopLabelStackSection for further details.

Resource: https://www.iana.org/assignments/ipfix/ipfix.xhtml

This field is collected from NetFlow/IPFIX protocols and stored in the Kentik’s MPLS Label 3 and MPLS Label 3 EXP dimensions.

The support is available in kproxy starting from version v7.37.0. The example of the Data Explorer query is shown below:


Avatar of authorDuĊĦan Pajin