Hi Yang, There is lack of clarity with stat types as defined in 7854. It specifically called out Adj-RIB-In and defines non pre/post Adj-RIB-In stat types/metrics, such as Loc-RIB, duplicates, invalid by, etc. This kind of renders the L flag misleading on some types considering some represent post processing metrics. 8671 doesn’t attempt to redefine or correct 7854 in this sense. Instead 8671 calls out explicitly new types that should be used. The O flag is specifically not set or ignored for stat reports, supporting backwards combability. Types 14 – 17 if sent will be understood by the BMP receiver, as those are explicitly defined. L flag being set or not for types 14 – 17 is moot as the types clearly define the metric for the given peer defined by the per-peer header (sans L or O flags).
Thanks, Tim On 2/1/23, 6:23 PM, "GROW" <[email protected]> wrote: Stats Reports follows per-peer header, which has L flag indicating indicates that the message reflects post-policy RFC7854 created stats type 7/8/9/10 for route counts, without specifying whether they are pre or post policy Later RFC8671 added stats report 14/15/16/17 with dedicated stat types for pre / post policy in Adj-RIB-Out, making the route counter setup inconsistent with Adj-RIB-In https://www.iana.org/assignments/bmp-parameters/bmp-parameters.xhtml#statistics-types Should L flag be meaningful for stats reports? If this is the case data in type 7/8/9/10 would be expected to match L flag? If not, why didn't stat type 7/8/9/10 get updated to match the setup in RFC8671 for Adj-RIB-Out? In JunOS 18's implementation, it appears stats reports are always sent with L flag set to 0, even though only post-policy monitoring has been configured. a related discussion that predates RFC 8671 https://mailarchive.ietf.org/arch/msg/grow/Coqz738DPv7ZGVy-9GGzUBjtsF8/ Thanks. Yang _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
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