Advanced BGP Monitoring Protocol (BMP) Statistics Types
draft-ietf-grow-bmp-bgp-rib-stats-14

GROW                                                       M. Srivastava
Internet-Draft                                          Juniper Networks
Intended status: Standards Track                                  Y. Liu
Expires: 18 May 2026                                        China Mobile
                                                                  C. Lin
                                                    New H3C Technologies
                                                                   J. Li
                                                            China Mobile
                                                        14 November 2025

        Advanced BGP Monitoring Protocol (BMP) Statistics Types
                  draft-ietf-grow-bmp-bgp-rib-stats-14

Abstract

   RFC 7854 defines different BGP Monitoring Protocol (BMP) statistics
   message types to observe events that occur on a monitored router.
   This document defines new statistics type to monitor BMP Adj-RIB-In
   and Adj-RIB-Out Routing Information Bases (RIBs).

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on 18 May 2026.

Copyright Notice

   Copyright (c) 2025 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   Please review these documents carefully, as they describe your rights
   and restrictions with respect to this document.  Code Components

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   extracted from this document must include Revised BSD License text as
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   provided without warranty as described in the Revised BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Statistics Definition . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Adj-RIB-In Statistics Definition  . . . . . . . . . . . .   4
     3.2.  Adj-RIB-Out Statistics Definition . . . . . . . . . . . .   6
   4.  Application Scope of Statistics . . . . . . . . . . . . . . .   7
   5.  Operational Considerations  . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   8.  Implementation Status . . . . . . . . . . . . . . . . . . . .  11
     8.1.  Juniper Networks  . . . . . . . . . . . . . . . . . . . .  11
     8.2.  New H3C Technologies  . . . . . . . . . . . . . . . . . .  12
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   Section 4.8 of [RFC7854] defines a number of different BGP Monitoring
   Protocol (BMP) statistics types to observe major events that occur on
   a monitored router.  Stats are either counters or gauges.
   Section 6.2 of [RFC8671] also defines several BMP statistics types
   for Adj-RIB-Out of a monitored router.

   New BMP statistics types are needed to enable more refined BGP route
   monitoring and analysis, improving operational maintenance and
   troubleshooting capabilities.

   This document defines new gauges for BMP statistics message.  The
   applicability scope of these new gauges (Adj-RIB-In, Adj-RIB-Out,
   Loc-RIB) is provided in Section 4.  The format of the BMP statistics
   message remains same as defined in [RFC7854].

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1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

2.  Terminology

   This document makes use of the following terms:

   *  Adj-RIB-In: As defined in [RFC4271], "The Adj-RIBs-In contains
      unprocessed routing information that has been advertised to the
      local BGP speaker by its peers."

   *  Pre-policy Adj-RIB-In: The result before applying the inbound
      policy to an Adj-RIB-In.  Note that this aligns with the pre-
      policy Adj-RIB-In concept specified in Section 2 of [RFC7854].

   *  Post-Policy Adj-RIB-In: As defined in Section 2 of [RFC7854].

   *  Adj-RIB-Out: As defined in [RFC4271], "The Adj-RIBs-Out contains
      the routes for advertisement to specific peers by means of the
      local speaker's UPDATE messages."

   *  Pre-policy Adj-RIB-Out: As defined in Section 3 of [RFC8671].

   *  Post-policy Adj-RIB-Out: As defined in Section 3 of [RFC8671].

   *  Loc-RIB: As defined in Section 1.1 of [RFC4271], "The Loc-RIB
      contains the routes that have been selected by the local BGP
      speaker's Decision Process."  Note that the Loc-RIB state as
      monitored through BMP might also contain routes imported from
      other routing protocols such as an IGP or local static routes.

   *  Primary route: A route to a prefix that is considered the best
      route by the BGP decision process [RFC4271] and actively used for
      forwarding traffic to that prefix.

   *  Backup route: A backup route is eligible for route selection, but
      it is not selected as the primary route and is also installed in
      the Loc-RIB.  It is not used until all primary routes become
      unreachable.  Backup routes are used for fast convergence in the
      event of failures.

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3.  Statistics Definition

   This section defines different statistics type for Adj-RIB-In and
   Adj-RIB-Out monitoring type.  Some of these statistics are also
   applicable to Loc-RIB; refer to Section 4 for more details.

3.1.  Adj-RIB-In Statistics Definition

   *  Type = 18: (64-bit Gauge) Current number of routes in pre-policy
      Adj-RIB-In.  This gauge is similar to stats type 7 defined in
      [RFC7854] and makes it explicitly for the pre-policy Adj-RIB-In.

   *  Type = 19: (64-bit Gauge) Current number of routes in per-Address
      Family Identifier (AFI)/Subsequent Address Family Identifier
      (SAFI) pre-policy Adj-RIB-In.  This gauge is similar to stats type
      9 defined in Section 4.8 of [RFC7854] and makes it explicitly for
      the pre-policy Adj-RIB-In.  The value is structured as: 2-byte
      AFI, 1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 20: (64-bit Gauge) Current number of routes in post-policy
      Adj-RIB-In.

   *  Type = 21: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      post-policy Adj-RIB-In.  The value is structured as: 2-byte AFI,
      1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 22: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      rejected by inbound policy.  This gauge is different from stats
      type 0 defined in Section 4.8 of [RFC7854].  The stats type 0 is a
      32-counter which is a monotonically increasing number and doesn't
      represent the current number of routes rejected by an inbound
      policy due to ongoing configuration changes.  The value is
      structured as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit
      Gauge.

   *  Type = 23: (64-bit Gauge) Current Number of routes in per-AFI/SAFI
      accepted by inbound policy.  The value is structured as: 2-byte
      AFI, 1-byte SAFI, followed by a 64-bit Gauge.  Some
      implementations, or configurations in implementations, may discard
      routes that do not match policy and thus the accepted count (type
      23) and the Adj-RIB-In counts (type 21) will be identical in such
      cases.

   *  Type = 24: (64-bit Gauge) Current Number of routes in per-AFI/SAFI
      selected as primary route.  The value is structured as: 2-byte
      AFI, 1-byte SAFI, followed by a 64-bit Gauge.

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   *  Type = 25: (64-bit Gauge) Current Number of routes in per-AFI/SAFI
      selected as a backup route.  The value is structured as: 2-byte
      AFI, 1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 26: (64-bit Gauge) Current Number of routes in per-AFI/SAFI
      suppressed by configured route damping policy.  The value is
      structured as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit
      Gauge.  'Suppressed' refers to a path which has been declared
      suppressed by the BGP Route Flap Damping mechanism as described in
      Section 2.2 of [RFC2439].

   *  Type = 27: (64-bit Gauge) Current Number of routes in per-AFI/SAFI
      marked as stale by Graceful Restart (GR) events.  The value is
      structured as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit
      Gauge.  'Stale' refers to a path which has been declared stale by
      the BGP GR mechanism as described in Section 4.1 of [RFC4724].

   *  Type = 28: (64-bit Gauge) Current Number of routes in per-AFI/SAFI
      marked as stale by Long-Lived Graceful Restart (LLGR).  The value
      is structured as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit
      Gauge.  'Stale' refers to a path which has been declared stale by
      the BGP LLGR mechanism as described in Section 4.3 of [RFC9494].

   *  Type = 29: (64-bit Gauge) Current Number of routes left until
      reaching the received route threshold which corresponds to the
      upper bound of accepted routes per Section 6.7 of [RFC4271].

   *  Type = 30: (64-bit Gauge) Current Number of routes per-AFI/SAFI
      left until reaching the received route threshold which corresponds
      to the upper bound of accepted routes per Section 6.7 of
      [RFC4271].  The value is structured as: 2-byte AFI, 1-byte SAFI,
      followed by a 64-bit Gauge.

   *  Type = 31: (64-bit Gauge) Current Number of routes left until
      reaching a license-customized route threshold.  This value is
      affected by whether a customized license exists, and when the
      customized license is installed.

   *  Type = 32: (64-bit Gauge) Current Number of routes in per-AFI/SAFI
      left until reaching a license-customized route threshold.  This
      value is affected by whether a customized license exists for the
      relevant address family, and when the customized license is
      installed.  The value is structured as: 2-byte AFI, 1-byte SAFI,
      followed by a 64-bit Gauge.

   *  Type = 33: (64-bit Gauge) Current number of routes rejected by
      exceeding the maximum AS_PATH length supported by the local
      configuration.

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   *  Type = 34: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      rejected by exceeding the maximum AS_PATH length supported by the
      local configuration.  The value is structured as: 2-byte AFI,
      1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 35: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      post-policy Adj-RIB-In invalidated through the Route Origin
      Authorization (ROA) of Resource Public Key Infrastructure (RPKI)
      [RFC6811].  This is total number of routes invalidated due to
      origin Autonomous System (AS) number mismatch and prefix length
      mismatch.  The value is structured as: 2-byte AFI, 1-byte SAFI,
      followed by a 64-bit Gauge.

   *  Type = 36: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      post-policy Adj-RIB-In validated by verifying route origin AS
      number through the ROA of RPKI [RFC6811].  The value is structured
      as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 37: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      post-policy Adj-RIB-In not found by verifying route origin AS
      number through the ROA of RPKI [RFC6811].  The value is structured
      as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit Gauge.

3.2.  Adj-RIB-Out Statistics Definition

   *  Type = 38: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      rejected by outbound policy.  These routes are active routes which
      otherwise would have been advertised in absence of outbound policy
      which rejected them.  The value is structured as: 2-byte AFI,
      1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 39: (64-bit Gauge) Current number of routes refused to be
      sent by exceeding the maximum AS_PATH length supported by the
      local configuration.

   *  Type = 40: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      refused to be sent by exceeding the maximum AS_PATH length
      supported by the local configuration.  The value is structured as:
      2-byte AFI, 1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 41: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      post-policy Adj-RIB-Out invalidated through the ROA of RPKI
      [RFC6811].  This is total number of routes invalidated due to
      origin AS number mismatch and prefix length mismatch.  The value
      is structured as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit
      Gauge.

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   *  Type = 42: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      post-policy Adj-RIB-Out validated by verifying route origin AS
      number through the ROA of RPKI [RFC6811].  The value is structured
      as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit Gauge.

   *  Type = 43: (64-bit Gauge) Current number of routes in per-AFI/SAFI
      post-policy Adj-RIB-Out not found by verifying route origin AS
      number through the ROA of RPKI [RFC6811].  The value is structured
      as: 2-byte AFI, 1-byte SAFI, followed by a 64-bit Gauge.

4.  Application Scope of Statistics

   This section briefly lists the statistics defined in this document
   and outlines their scope of application, as shown in Table 1.

                  +-------+----------+-----------+-------+
                  | Type  |Adj-RIB-In|Adj-RIB-Out|Loc-RIB|
                  +-------+----------+-----------+-------+
                  |  18   |     Y    |     N     |   N   |
                  |  19   |     Y    |     N     |   N   |
                  |  20   |     Y    |     N     |   N   |
                  |  21   |     Y    |     N     |   N   |
                  |  22   |     Y    |     N     |   N   |
                  |  23   |     Y    |     N     |   N   |
                  |  24   |     Y    |     N     |   Y   |
                  |  25   |     Y    |     N     |   Y   |
                  |  26   |     Y    |     N     |   Y   |
                  |  27   |     Y    |     N     |   Y   |
                  |  28   |     Y    |     N     |   Y   |
                  |  29   |     Y    |     N     |   N   |
                  |  30   |     Y    |     N     |   N   |
                  |  31   |     Y    |     N     |   Y   |
                  |  32   |     Y    |     N     |   Y   |
                  |  33   |     Y    |     N     |   N   |
                  |  34   |     Y    |     N     |   N   |
                  |  35   |     Y    |     N     |   N   |
                  |  36   |     Y    |     N     |   N   |
                  |  37   |     Y    |     N     |   N   |
                  |  38   |     N    |     Y     |   N   |
                  |  39   |     N    |     Y     |   N   |
                  |  40   |     N    |     Y     |   N   |
                  |  41   |     N    |     Y     |   N   |
                  |  42   |     N    |     Y     |   N   |
                  |  43   |     N    |     Y     |   N   |
                  +-------+----------+-----------+-------+

                      Table 1: Scope of Application

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5.  Operational Considerations

   This document defines new gauges for BMP statistics messages.  The
   format of BMP statistics messages remains unchanged from [RFC7854].
   Transmission scheduling and triggering mechanisms for new gauges are
   implementation-dependent.  Implementations SHOULD determine
   appropriate report generation and delivery strategies, including
   configurable timing intervals and threshold values.  The mechanism
   for controlling the reporting of new gauges SHOULD be consistent with
   that of existing types.  Implementations SHOULD also support per-
   router configuration of statistic subsets for collection and
   reporting.

   Some statistics are dependent on feature configurations, such as GR,
   LLGR, and RPKI, so the corresponding statistics are only sent when
   these features are enabled.  This statistics include Type 24, 25, 26,
   27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41, 42, and 43.

   Some statistics are also relevant for the Loc-RIB view [RFC9069], so
   they may apply to the Loc-RIB view after best-path selection is
   completed.  This statistics include Type 24, 25, 26, 27, 28, 31, and
   32.

   Certain statistics may have logical relationships (e.g., per-AFI/SAFI
   counts summing to global totals).  Implementations MAY perform
   consistency checks but MUST NOT assume strict dependencies (due to
   potential race conditions or partial failures).  Discrepancies (e.g.,
   sum(per-AFI/SAFI) != global count) SHOULD be logged as warnings but
   MUST NOT disrupt protocol operation.

   For backward compatibility, and absent policy otherwise, it is
   RECOMMENDED that monitored routers capable of generating both (Type 7
   and Type 18) or (Type 9 and Type 19) BMP statistics SHOULD transmit
   both corresponding types simultaneously.  This allows monitoring
   stations to process either format according to their needs without
   disrupting existing implementations that rely on Type 7 or Type 9.
   The selection of which statistic type(s) to generate within each pair
   should be treated as an implementation decision rather than a
   protocol requirement, with the monitoring station behavior for
   handling these statistic types remaining implementation-specific.

   Counters may reset due to session restart, manual clearance, or
   overflow.  Implementations MUST track discontinuities and log this
   information.

   Operators MAY consider rate-limiting statistic updates to minimize
   performance impact on control-plane processes.  Operators SHOULD
   enable only necessary statistics to reduce memory and CPU overhead.

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   A BMP implementation MUST ignore unrecognized stat types upon receipt
   and MUST exclude unsupported stat types upon transmission.

6.  Security Considerations

   Procedures and protocol extensions defined in this document do not
   affect the BMP security model.  All security and authentication
   mechanisms required by Section 11 of [RFC7854], Section 8 of
   [RFC8671], and Section 7 of [RFC9069] are also applicable to the
   gauges defined in this document.  This document does not add any
   additional security considerations.

   Monitored devices SHOULD be configured to implement rate-limited
   reporting of new gauges.

7.  IANA Considerations

   IANA has assigned the following new parameters in the BMP Statistics
   Types registry (https://www.iana.org/assignments/bmp-parameters/bmp-
   parameters.xhtml#statistics-types), part of the BMP parameters
   registry group (https://www.iana.org/assignments/bmp-parameters/bmp-
   parameters.xhtml).

   This document requests IANA to update these entries as follows.
   Also, the document requests IANA to update the reference cited for
   the entries with the RFC number to be assigned to this document.

   *  Type = 18: Number of routes currently in pre-policy Adj-RIB-In.

   *  Type = 19: Number of routes currently in per-AFI/SAFI pre-policy
      Adj-RIB-In.

   *  Type = 20: Number of routes currently in post-policy Adj-RIB-In.

   *  Type = 21: Number of routes currently in per-AFI/SAFI post-policy
      Adj-RIB-In.

   *  Type = 22: Number of routes currently in per-AFI/SAFI rejected by
      inbound policy.

   *  Type = 23: Number of routes currently in per-AFI/SAFI accepted by
      inbound policy.

   *  Type = 24: Number of routes currently in per-AFI/SAFI selected as
      primary route.

   *  Type = 25: Number of routes currently in per-AFI/SAFI selected as
      a backup route.

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   *  Type = 26: Number of routes currently in per-AFI/SAFI suppressed
      by configured route damping policy.

   *  Type = 27: Number of routes currently in per-AFI/SAFI marked as
      stale by GR events.

   *  Type = 28: Number of routes currently in per-AFI/SAFI marked as
      stale by LLGR.

   *  Type = 29: Number of routes currently left until reaching the
      received route threshold.

   *  Type = 30: Number of routes currently per-AFI/SAFI left until
      reaching the received route threshold.

   *  Type = 31: Number of routes currently left until reaching a
      license-customized route threshold.

   *  Type = 32: Number of routes currently in per-AFI/SAFI left until
      reaching a license-customized route threshold.

   *  Type = 33: Number of routes currently rejected due to exceeding
      the maximum AS_PATH length.

   *  Type = 34: Number of routes currently in per-AFI/SAFI rejected due
      to exceeding the maximum AS_PATH length.

   *  Type = 35: Number of routes currently in per-AFI/SAFI post-policy
      Adj-RIB-In invalidated after verifying route origin AS number
      through the ROA of RPKI.

   *  Type = 36: Number of routes currently in per-AFI/SAFI post-policy
      Adj-RIB-In validated after verifying route origin AS number
      through the ROA of RPKI.

   *  Type = 37: Number of routes currently in per-AFI/SAFI post-policy
      Adj-RIB-In not found after verifying route origin AS number
      through the ROA of RPKI.

   *  Type = 38: Number of routes currently in per-AFI/SAFI rejected by
      outbound policy.

   *  Type = 39: Number of routes currently refused to be sent by
      exceeding the maximum AS_PATH length.

   *  Type = 40: Number of routes currently in per-AFI/SAFI refused to
      be sent by exceeding the maximum AS_PATH length.

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   *  Type = 41: Number of routes currently in per-AFI/SAFI post-policy
      Adj-RIB-Out invalidated after verifying route origin AS number
      through the ROA of RPKI.

   *  Type = 42: Number of routes currently in per-AFI/SAFI post-policy
      Adj-RIB-Out validated after verifying route origin AS number
      through the ROA of RPKI.

   *  Type = 43: Number of routes currently in per-AFI/SAFI post-policy
      Adj-RIB-Out not found after verifying route origin AS number
      through the ROA of RPKI.

8.  Implementation Status

   Note to the RFC Editor - remove this section before publication, as
   well as remove the reference to [RFC7942].

   This section records the status of known implementations of the
   protocol defined by this specification at the time of posting of this
   Internet-Draft, and is based on a proposal described in [RFC7942].
   The description of implementations in this section is intended to
   assist the IETF in its decision processes in progressing drafts to
   RFCs.  Please note that the listing of any individual implementation
   here does not imply endorsement by the IETF.  Furthermore, no effort
   has been spent to verify the information presented here that was
   supplied by IETF contributors.  This is not intended as, and must not
   be construed to be, a catalog of available implementations or their
   features.  Readers are advised to note that other implementations may
   exist.

   According to [RFC7942], "this will allow reviewers and working groups
   to assign due consideration to documents that have the benefit of
   running code, which may serve as evidence of valuable experimentation
   and feedback that have made the implemented protocols more mature.
   It is up to the individual working groups to use this information as
   they see fit".

8.1.  Juniper Networks

   *  Organization: Juniper Networks.

   *  Implementation:

   *  Description: Below RIB-IN statistics are implemented.

      -  Type = 18.

      -  Type = 19.

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      -  Type = 20.

      -  Type = 21.

      -  Type = 22.

      -  Type = 23.

      -  Type = 26.

      -  Type = 27.

      -  Type = 28.

      -  Type = 35.

      -  Type = 36.

      -  Type = 37.

   *  Maturity Level: Demo

   *  Coverage:

   *  Version: Draft-05

   *  Licensing: N/A

   *  Implementation experience: Nothing specific.

   *  Contact: msri@juniper.net

   *  Last updated: January 20, 2025

8.2.  New H3C Technologies

   *  Organization: New H3C Technologies.

   *  Implementation: H3C CR16000, CR19000 series routers implementation
      of New BMP Statistics Type.

   *  Description: Below New types have been implemented in above-
      mentioned New H3C Products (running Version 7.1.086 and above).

      -  Type = 18.

      -  Type = 19.

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      -  Type = 20.

      -  Type = 21.

      -  Type = 22.

      -  Type = 23.

      -  Type = 24.

      -  Type = 25.

      -  Type = 29.

      -  Type = 30.

      -  Type = 31.

      -  Type = 32.

      -  Type = 33.

      -  Type = 34.

      -  Type = 35.

      -  Type = 36.

      -  Type = 37.

      -  Type = 38.

      -  Type = 39.

      -  Type = 40.

   *  Maturity Level: Demo

   *  Coverage:

   *  Version: Draft-05

   *  Licensing: N/A

   *  Implementation experience: Nothing specific.

   *  Contact: linchangwang.04414@h3c.com

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   *  Last updated: January 20, 2025

9.  Acknowledgements

   The author would like to thank Jeff Haas, Mohamed Boucadair, Thomas
   Graf, and Prasad S.  Narasimha for their valuable input.

   Thanks to Giuseppe Fioccola for the OPSDIR, Jouni Korhonen for the
   GENART, and Bruno Decraene for the RTGDIR review.

10.  References

10.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

   [RFC2439]  Villamizar, C., Chandra, R., and R. Govindan, "BGP Route
              Flap Damping", RFC 2439, DOI 10.17487/RFC2439, November
              1998, <https://www.rfc-editor.org/info/rfc2439>.

   [RFC4271]  Rekhter, Y., Ed., Li, T., Ed., and S. Hares, Ed., "A
              Border Gateway Protocol 4 (BGP-4)", RFC 4271,
              DOI 10.17487/RFC4271, January 2006,
              <https://www.rfc-editor.org/info/rfc4271>.

   [RFC4724]  Sangli, S., Chen, E., Fernando, R., Scudder, J., and Y.
              Rekhter, "Graceful Restart Mechanism for BGP", RFC 4724,
              DOI 10.17487/RFC4724, January 2007,
              <https://www.rfc-editor.org/info/rfc4724>.

   [RFC6811]  Mohapatra, P., Scudder, J., Ward, D., Bush, R., and R.
              Austein, "BGP Prefix Origin Validation", RFC 6811,
              DOI 10.17487/RFC6811, January 2013,
              <https://www.rfc-editor.org/info/rfc6811>.

   [RFC7854]  Scudder, J., Ed., Fernando, R., and S. Stuart, "BGP
              Monitoring Protocol (BMP)", RFC 7854,
              DOI 10.17487/RFC7854, June 2016,
              <https://www.rfc-editor.org/info/rfc7854>.

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <https://www.rfc-editor.org/info/rfc8174>.

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   [RFC8671]  Evens, T., Bayraktar, S., Lucente, P., Mi, P., and S.
              Zhuang, "Support for Adj-RIB-Out in the BGP Monitoring
              Protocol (BMP)", RFC 8671, DOI 10.17487/RFC8671, November
              2019, <https://www.rfc-editor.org/info/rfc8671>.

   [RFC9069]  Evens, T., Bayraktar, S., Bhardwaj, M., and P. Lucente,
              "Support for Local RIB in the BGP Monitoring Protocol
              (BMP)", RFC 9069, DOI 10.17487/RFC9069, February 2022,
              <https://www.rfc-editor.org/info/rfc9069>.

   [RFC9494]  Uttaro, J., Chen, E., Decraene, B., and J. Scudder, "Long-
              Lived Graceful Restart for BGP", RFC 9494,
              DOI 10.17487/RFC9494, November 2023,
              <https://www.rfc-editor.org/info/rfc9494>.

10.2.  Informative References

   [RFC7942]  Sheffer, Y. and A. Farrel, "Improving Awareness of Running
              Code: The Implementation Status Section", BCP 205,
              RFC 7942, DOI 10.17487/RFC7942, July 2016,
              <https://www.rfc-editor.org/info/rfc7942>.

Authors' Addresses

   Mukul Srivastava
   Juniper Networks
   10 Technology Park Dr
   Westford, MA 01886
   United States of America
   Email: msri@juniper.net

   Yisong Liu
   China Mobile
   32 Xuanwumen West Street
   Beijing
   Xicheng District, 100053
   China
   Email: liuyisong@chinamobile.com

   Changwang Lin
   New H3C Technologies
   8 Yongjia North Road
   Beijing
   Haidian District, 100094
   China
   Email: linchangwang.04414@h3c.com

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   Jinming Li
   China Mobile
   32 Xuanwumen West Street
   Beijing
   Xicheng District, 100053
   China
   Email: lijinming@chinamobile.com

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