[IPFIX] basicList clarification

Gerald Naveen A <ageraldnaveen@gmail.com> Sat, 12 December 2015 08:29 UTC

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From: Gerald Naveen A <ageraldnaveen@gmail.com>
To: ipfix@ietf.org
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Subject: [IPFIX] basicList clarification
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Hi all,

It is my understanding from the RFCs that basicList type is an encoding for
list of IPFIX Information Elements.

To create the template much more strongly typed, we have defined a custom
(enterprise) Information Element with a new ID (say X), which is defined as
a basicList of specific items (eg., InterfaceName).

My question to you all is: Is it mandatory that we have a separate
information element called InterfaceName (say ID Y) and define X as a
basicList of Y ? For our need, it is enough for us, that we define X as a
basicList of string (as X is already strongly defined). But string is a
type, not info element.

We would like to retain X (instead of defining a template directly with a
standard basicList). And we don't have any other need to define a new
Information Element Y.

I realize that the basicList encoding has a information-element ID of the
item in payload -- is this mandatory? Or for a strongly typed item X, we
could expect the IPFIX parser to be aware of contents (interface name) by

Pls let me know if my question is unclear.

Thanks in advance.
- Gerald Naveen