GROW M. Srivastava
Internet-Draft Juniper Networks
Updates: 7854 (if approved) Y. Liu
Intended status: Standards Track China Mobile
Expires: 9 November 2024 C. Lin
New H3C Technologies
J. Li
China Mobile
8 May 2024
Definition For New BMP Statistics Type
draft-ietf-grow-bmp-bgp-rib-stats-03
Abstract
RFC 7854 defined different BMP statistics messages types to observe
interesting events that occur on the router. This document updates
RFC 7854 by adding new statistics type to monitor BMP rib-in and rib-
out 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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on 9 November 2024.
Copyright Notice
Copyright (c) 2024 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
Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
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
described in Section 4.e of the Trust Legal Provisions and are
provided without warranty as described in the Revised BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2
2. Statistics Definition . . . . . . . . . . . . . . . . . . . . 2
2.1. RIB-IN Statistics Definition . . . . . . . . . . . . . . 3
2.2. RIB-OUT Statistics Definition . . . . . . . . . . . . . . 7
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
4. Security Considerations . . . . . . . . . . . . . . . . . . . 8
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 8
6. Normative References . . . . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
[RFC7854] defines a number of different BMP statistics types to
observe interesting events that occur on the router. Stats are
either counters or gauges. A 32-bit Counter is a non-negative
integer that monotonically increases until it reaches a maximum
value, when it wraps around and starts increasing again from 0. A
64-bit Gauge is a non-negative integer that may increase or decrease,
but shall never exceed a maximum value, nor fall below a minimum one.
This document defines new gauges for BMP statistics message. The
format of the BMP statistics message remains same as defined in
[RFC7854].
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. Statistics Definition
This section defines different statistics type for RIB-IN and RIB-OUT
monitoring type.
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2.1. RIB-IN Statistics Definition
* Type = TBD1: (64-bit Gauge) Current number of routes in Adj-RIBs-
In-Pre-Policy. The value can increase or decrease based upon
ongoing configuration change. Note that this counter updates
stats type 7 defined in [RFC7854] and makes it a explicit for Adj-
RIBs-In-Pre-Policy.
* Type = TBD2: (64-bit Gauge) Current number of routes in per-AFI/
SAFI Adj-RIBs-In-Pre-Policy. The value can increase or decrease
based upon ongoing configuration change. Note that this counter
is similar from stats type 9 defined in [RFC7854] and makes it a
explicit for Adj-RIBs-In-Pre-Policy. The value is structured as:
2-byte Address Family Identifier (AFI), 1-byte Subsequent Address
Family Identifier (SAFI), followed by a 64-bit Gauge.
* Type = TBD3: (64-bit Gauge) Current number of routes in Adj-RIBs-
In-Post-Policy. The value can increase or decrease based upon
ongoing configuration change.
* Type = TBD4: (64-bit Gauge) Current number of routes in per-AFI/
SAFI Adj-RIBs-In-Post-Policy. The value can increase or decrease
based upon ongoing configuration change. The value is structured
as: 2-byte Address Family Identifier (AFI), 1-byte Subsequent
Address Family Identifier (SAFI), followed by a 64-bit Gauge.
* Type = TBD5: (64-bit Gauge) Current number of routes in per-AFI/
SAFI rejected by inbound policy. The value can increase or
decrease based upon ongoing configuration change. Note that this
counter is different from stats type 0 defined in [RFC7854]. The
stats type 0 in [RFC7854] is the a 32 counter which is
monotonically increasing number and doesn't represents the current
number of routes rejected by inbound policy due to ongoing
configuration changes. The value is structured as: 2-byte Address
Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge.
* Type = TBD6: (64-bit Gauge) Number of routes in per-AFI/SAFI
accepted by inbound policy. The value can increase or decrease
based upon ongoing configuration change or network events. The
value is structured as: 2-byte Address Family Identifier (AFI),
1-byte Subsequent Address Family Identifier (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 and the rib-in counts will be identical in
such cases.
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* Type = TBD7: (64-bit Gauge) Number of routes in per-AFI/SAFI
selected as primary route. The value can increase or decrease
based upon ongoing configuration change or network events. The
value is structured as: 2-byte Address Family Identifier (AFI),
1-byte Subsequent Address Family Identifier (SAFI), followed by a
64-bit Gauge. A primary path is a recursive or non-recursive path
whose nexthop resolution ends with an adjacency
draft-ietf-rtgwg-bgp-pic [I-D.ietf-rtgwg-bgp-pic]. A prefix can
have more than one primary path if multipath is configured
draft-lapukhov-bgp-ecmp-considerations
[I-D.lapukhov-bgp-ecmp-considerations]. A best-path is also
considered as a primary path.
* Type = TBD8: (64-bit Gauge) Number of routes in per-AFI/SAFI
selected as backup route. The value can increase or decrease
based upon ongoing configuration change or network events. The
value is structured as: 2-byte Address Family Identifier (AFI),
1-byte Subsequent Address Family Identifier (SAFI), followed by a
64-bit Gauge. A backup path is also installed in the RIB, but it
is not used until some or all primary paths become unreachable.
Backup paths are used for fast convergence in the event of
failures.
* Type = TBD9: (64-bit Gauge) Number of routes in per-AFI/SAFI
suppressed by configured route damping policy. The value can
increase or decrease based upon configuration change or network
events. The value is structured as: 2-byte Address Family
Identifier (AFI), 1-byte Subsequent Address Family Identifier
(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 = TBD10: (64-bit Gauge) Number of routes in per-AFI/SAFI
marked as stale by any configuration. The value is structured as:
2-byte Address Family Identifier (AFI), 1-byte Subsequent Address
Family Identifier (SAFI), followed by a 64-bit Gauge. Stale
refers to a path which has been declared stale by the BGP Graceful
Restart mechanism as described in Section 4.1 of [RFC4724].
* Type = TBD11: (64-bit Gauge) Number of routes in per-AFI/SAFI
marked as stale by LLGR. The value is structured as: 2-byte
Address Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge. Stale refers to a
path which has been declared stale by the BGP Long-Lived Graceful
Restart mechanism as described in Section 4.3 of [RFC9494]. This
is the route that are marked stale as part of LLGR process.
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* Type = TBD12: (64-bit Gauge) Number of routes left until reaching
the received route threshold as defined in Section 6.7 of
[RFC4271]. This value can increase or decrease base on ongoing
configuration changes of the peer's received route threshold.
* Type = TBD13: (64-bit Gauge) Number of routes in per-AFI/SAFI left
until reaching the received route threshold as defined in
Section 6.7 of [RFC4271]. This value can increase or decrease
base on ongoing configuration changes of the peer's received route
threshold. The value is structured as: 2-byte Address Family
Identifier (AFI), 1-byte Subsequent Address Family Identifier
(SAFI), followed by a 64-bit Gauge.
* Type = TBD14: (64-bit Gauge) Number of routes left until reaching
the 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. This value
can increase or decrease based on current customized information
of license.
Since the license-customized route threshold is vendor specific,
this type value (TBD14) SHOULD use enterprise-specific TLV
encoding as described in Section 3.3 of
[I-D.ietf-grow-bmp-tlv-ebit].
For the enterprise-specific TLV of TBD14, E-bit SHOULD set to 1,
and TBD14 is 15 bits of TLV Type. As enterprise-specific Type
value, TBD14 is determined by the Enterprise number, and does not
have to be defined by INNA.
* Type = TBD15: (64-bit Gauge) Number of routes in per-AFI/SAFI left
until reaching the 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. This value can increase or decrease based on current
customized information of license. The value is structured as:
2-byte Address Family Identifier (AFI), 1-byte Subsequent Address
Family Identifier (SAFI), followed by a 64-bit Gauge.
It's also since the license-customized route threshold is vendor
specific, this type value (TBD15) SHOULD also use enterprise-
specific TLV encoding as described in Section 3.3 of
[I-D.ietf-grow-bmp-tlv-ebit].
For the enterprise-specific TLV of TBD15, E-bit SHOULD set to 1,
and TBD15 is 15 bits of TLV Type. As enterprise-specific Type
value, TBD15 is determined by the Enterprise number, and also does
not have to be defined by INNA.
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* Type = TBD16: (64-bit Gauge) Current Number of routes rejected by
exceeding the length threshold of as-path. This value can
increase or decrease base on ongoing configuration changes of the
length threshold of as-path. For as-path attribute information,
please refer to [RFC4271].
* Type = TBD17: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI rejected by exceeding the length threshold of as-path. This
value can increase or decrease base on ongoing configuration
changes of the length threshold of as-path. The value is
structured as: 2-byte Address Family Identifier (AFI), 1-byte
Subsequent Address Family Identifier (SAFI), followed by a 64-bit
Gauge.
* Type = TBD18: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI Adj-RIBs-In-Post-Policy invalidated by verifying route origin
Autonomous System (AS) number through the Route Origin
Authorization (ROA) of Resource Public Key Infrastructure (RPKI)
[RFC6811]. This value can increase or decrease base on ongoing
ROA changes of RPKI. The value is structured as: 2-byte Address
Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge.
* Type = TBD19: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI Adj-RIBs-In-Post-Policy validated by verifying route origin
Autonomous System (AS) number through the Route Origin
Authorization (ROA) of Resource Public Key Infrastructure (RPKI)
[RFC6811]. This value can increase or decrease base on ongoing
ROA changes of RPKI. The value is structured as: 2-byte Address
Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge.
* Type = TBD20: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI Adj-RIBs-In-Post-Policy not found by verifying route origin
Autonomous System (AS) number through the Route Origin
Authorization (ROA) of Resource Public Key Infrastructure (RPKI)
[RFC6811]. This value can increase or decrease base on ongoing
ROA changes of RPKI. The value is structured as: 2-byte Address
Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge.
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2.2. RIB-OUT Statistics Definition
* Type = TBD21: (64-bit Gauge) Current number of routes in per-AFI/
SAFI rejected by outbound policy. These routes are active routes
which should otherwise would have been advertised in absense of
outbound policy which rejected them. The value can increase or
decrease based upon ongoing configuration change. The value is
structured as: 2-byte Address Family Identifier (AFI), 1-byte
Subsequent Address Family Identifier (SAFI), followed by a 64-bit
Gauge. This counter only considers routes distributed from loc-
rib into the adj-ribs-out and does not include cases like BGP add-
paths [RFC7911].
* Type = TBD22: (64-bit Gauge) Current Number of routes refused to
be sent by exceeding the length threshold of as-path. This value
can increase or decrease base on ongoing configuration changes of
the length threshold of as-path. For as-path attribute
information, please refer to [RFC4271].
* Type = TBD23: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI refused to be sent by exceeding the length threshold of as-
path. This value can increase or decrease base on ongoing
configuration changes of the length threshold of as-path. The
value is structured as: 2-byte Address Family Identifier (AFI),
1-byte Subsequent Address Family Identifier (SAFI), followed by a
64-bit Gauge.
* Type = TBD24: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI Adj-RIBs-Out-Post-Policy invalidated by verifying route
origin Autonomous System (AS) number through the Route Origin
Authorization (ROA) of Resource Public Key Infrastructure (RPKI)
[RFC6811]. This value can increase or decrease base on ongoing
ROA changes of RPKI. The value is structured as: 2-byte Address
Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge.
* Type = TBD25: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI Adj-RIBs-Out-Post-Policy validated by verifying route origin
Autonomous System (AS) number through the Route Origin
Authorization (ROA) of Resource Public Key Infrastructure (RPKI)
[RFC6811]. This value can increase or decrease base on ongoing
ROA changes of RPKI. The value is structured as: 2-byte Address
Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge.
* Type = TBD26: (64-bit Gauge) Current Number of routes in per-AFI/
SAFI Adj-RIBs-Out-Post-Policy not found by verifying route origin
Autonomous System (AS) number through the Route Origin
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Authorization (ROA) of Resource Public Key Infrastructure (RPKI)
[RFC6811]. This value can increase or decrease base on ongoing
ROA changes of RPKI. The value is structured as: 2-byte Address
Family Identifier (AFI), 1-byte Subsequent Address Family
Identifier (SAFI), followed by a 64-bit Gauge.
3. IANA Considerations
This document requests that IANA assign the following new parameters
(Except TBD14 and TBD15) to the BMP parameters name space
(https://www.iana.org/assignments/bmp-parameters/bmp-
parameters.xhtml).
4. Security Considerations
The considerations in Section 11 of [RFC7854] apply to this document.
It is also believed that this document does not add any additional
security considerations.
5. Acknowledgements
The author would like to thank Jeff Haas for his valuable input.
6. Normative References
[I-D.ietf-grow-bmp-tlv-ebit]
Lucente, P. and Y. Gu, "Support for Enterprise-specific
TLVs in the BGP Monitoring Protocol", Work in Progress,
Internet-Draft, draft-ietf-grow-bmp-tlv-ebit-05, 18 March
2024, <https://datatracker.ietf.org/doc/html/draft-ietf-
grow-bmp-tlv-ebit-05>.
[I-D.ietf-rtgwg-bgp-pic]
Bashandy, A., Filsfils, C., and P. Mohapatra, "BGP Prefix
Independent Convergence", Work in Progress, Internet-
Draft, draft-ietf-rtgwg-bgp-pic-20, 1 October 2023,
<https://datatracker.ietf.org/doc/html/draft-ietf-rtgwg-
bgp-pic-20>.
[I-D.lapukhov-bgp-ecmp-considerations]
Lapukhov, P. and J. Tantsura, "Equal-Cost Multipath
Considerations for BGP", Work in Progress, Internet-Draft,
draft-lapukhov-bgp-ecmp-considerations-12, 28 December
2023, <https://datatracker.ietf.org/doc/html/draft-
lapukhov-bgp-ecmp-considerations-12>.
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[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>.
[RFC7911] Walton, D., Retana, A., Chen, E., and J. Scudder,
"Advertisement of Multiple Paths in BGP", RFC 7911,
DOI 10.17487/RFC7911, July 2016,
<https://www.rfc-editor.org/info/rfc7911>.
[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>.
[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>.
Authors' Addresses
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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
Jinming Li
China Mobile
32 Xuanwumen West Street
Beijing
Xicheng District, 100053
China
Email: lijinming@chinamobile.com
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