draft-ietf-ippm-initial-registry-10.txt   draft-ietf-ippm-initial-registry-11.txt 
Network Working Group A. Morton Network Working Group A. Morton
Internet-Draft AT&T Labs Internet-Draft AT&T Labs
Intended status: Standards Track M. Bagnulo Intended status: Standards Track M. Bagnulo
Expires: September 12, 2019 UC3M Expires: September 29, 2019 UC3M
P. Eardley P. Eardley
BT BT
K. D'Souza K. D'Souza
AT&T Labs AT&T Labs
March 11, 2019 March 28, 2019
Initial Performance Metrics Registry Entries Initial Performance Metrics Registry Entries
draft-ietf-ippm-initial-registry-10 draft-ietf-ippm-initial-registry-11
Abstract Abstract
This memo defines the set of Initial Entries for the IANA Performance This memo defines the set of Initial Entries for the IANA Performance
Metrics Registry. The set includes, UDP Round-trip Latency and Loss, Metrics Registry. The set includes, UDP Round-trip Latency and Loss,
Packet Delay Variation, DNS Response Latency and Loss, UDP Poisson Packet Delay Variation, DNS Response Latency and Loss, UDP Poisson
One-way Delay and Loss, UDP Periodic One-way Delay and Loss, ICMP One-way Delay and Loss, UDP Periodic One-way Delay and Loss, ICMP
Round-trip Latency and Loss, and TCP round-trip Latency and Loss. Round-trip Latency and Loss, and TCP round-trip Latency and Loss.
Requirements Language Requirements Language
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
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Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 12, 2019. This Internet-Draft will expire on September 29, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
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publication of this document. Please review these documents publication of this document. Please review these documents
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8.4.4. Calibration . . . . . . . . . . . . . . . . . . . . . 52 8.4.4. Calibration . . . . . . . . . . . . . . . . . . . . . 52
8.5. Administrative items . . . . . . . . . . . . . . . . . . 53 8.5. Administrative items . . . . . . . . . . . . . . . . . . 53
8.5.1. Status . . . . . . . . . . . . . . . . . . . . . . . 53 8.5.1. Status . . . . . . . . . . . . . . . . . . . . . . . 53
8.5.2. Requestor . . . . . . . . . . . . . . . . . . . . . . 53 8.5.2. Requestor . . . . . . . . . . . . . . . . . . . . . . 53
8.5.3. Revision . . . . . . . . . . . . . . . . . . . . . . 53 8.5.3. Revision . . . . . . . . . . . . . . . . . . . . . . 53
8.5.4. Revision Date . . . . . . . . . . . . . . . . . . . . 53 8.5.4. Revision Date . . . . . . . . . . . . . . . . . . . . 53
8.6. Comments and Remarks . . . . . . . . . . . . . . . . . . 53 8.6. Comments and Remarks . . . . . . . . . . . . . . . . . . 53
9. ICMP Round-trip Latency and Loss Registry Entries . . . . . . 53 9. ICMP Round-trip Latency and Loss Registry Entries . . . . . . 53
9.1. Summary . . . . . . . . . . . . . . . . . . . . . . . . . 53 9.1. Summary . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.1.1. ID (Identifier) . . . . . . . . . . . . . . . . . . . 53 9.1.1. ID (Identifier) . . . . . . . . . . . . . . . . . . . 53
9.1.2. Name . . . . . . . . . . . . . . . . . . . . . . . . 54 9.1.2. Name . . . . . . . . . . . . . . . . . . . . . . . . 53
9.1.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . 54 9.1.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . 54
9.1.4. Description . . . . . . . . . . . . . . . . . . . . . 54 9.1.4. Description . . . . . . . . . . . . . . . . . . . . . 54
9.1.5. Change Controller . . . . . . . . . . . . . . . . . . 54 9.1.5. Change Controller . . . . . . . . . . . . . . . . . . 54
9.1.6. Version (of Registry Format) . . . . . . . . . . . . 54 9.1.6. Version (of Registry Format) . . . . . . . . . . . . 54
9.2. Metric Definition . . . . . . . . . . . . . . . . . . . . 55 9.2. Metric Definition . . . . . . . . . . . . . . . . . . . . 54
9.2.1. Reference Definition . . . . . . . . . . . . . . . . 55 9.2.1. Reference Definition . . . . . . . . . . . . . . . . 55
9.2.2. Fixed Parameters . . . . . . . . . . . . . . . . . . 55 9.2.2. Fixed Parameters . . . . . . . . . . . . . . . . . . 55
9.3. Method of Measurement . . . . . . . . . . . . . . . . . . 56 9.3. Method of Measurement . . . . . . . . . . . . . . . . . . 56
9.3.1. Reference Method . . . . . . . . . . . . . . . . . . 56 9.3.1. Reference Method . . . . . . . . . . . . . . . . . . 56
9.3.2. Packet Stream Generation . . . . . . . . . . . . . . 57 9.3.2. Packet Stream Generation . . . . . . . . . . . . . . 57
9.3.3. Traffic Filtering (observation) Details . . . . . . . 58 9.3.3. Traffic Filtering (observation) Details . . . . . . . 58
9.3.4. Sampling Distribution . . . . . . . . . . . . . . . . 58 9.3.4. Sampling Distribution . . . . . . . . . . . . . . . . 58
9.3.5. Run-time Parameters and Data Format . . . . . . . . . 58 9.3.5. Run-time Parameters and Data Format . . . . . . . . . 58
9.3.6. Roles . . . . . . . . . . . . . . . . . . . . . . . . 59 9.3.6. Roles . . . . . . . . . . . . . . . . . . . . . . . . 59
9.4. Output . . . . . . . . . . . . . . . . . . . . . . . . . 59 9.4. Output . . . . . . . . . . . . . . . . . . . . . . . . . 59
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9.4.2. Reference Definition . . . . . . . . . . . . . . . . 59 9.4.2. Reference Definition . . . . . . . . . . . . . . . . 59
9.4.3. Metric Units . . . . . . . . . . . . . . . . . . . . 61 9.4.3. Metric Units . . . . . . . . . . . . . . . . . . . . 61
9.4.4. Calibration . . . . . . . . . . . . . . . . . . . . . 61 9.4.4. Calibration . . . . . . . . . . . . . . . . . . . . . 61
9.5. Administrative items . . . . . . . . . . . . . . . . . . 62 9.5. Administrative items . . . . . . . . . . . . . . . . . . 62
9.5.1. Status . . . . . . . . . . . . . . . . . . . . . . . 62 9.5.1. Status . . . . . . . . . . . . . . . . . . . . . . . 62
9.5.2. Requestor . . . . . . . . . . . . . . . . . . . . . . 62 9.5.2. Requestor . . . . . . . . . . . . . . . . . . . . . . 62
9.5.3. Revision . . . . . . . . . . . . . . . . . . . . . . 62 9.5.3. Revision . . . . . . . . . . . . . . . . . . . . . . 62
9.5.4. Revision Date . . . . . . . . . . . . . . . . . . . . 62 9.5.4. Revision Date . . . . . . . . . . . . . . . . . . . . 62
9.6. Comments and Remarks . . . . . . . . . . . . . . . . . . 62 9.6. Comments and Remarks . . . . . . . . . . . . . . . . . . 62
10. TCP Round-Trip Delay and Loss Registry Entries . . . . . . . 62 10. TCP Round-Trip Delay and Loss Registry Entries . . . . . . . 62
10.1. Summary . . . . . . . . . . . . . . . . . . . . . . . . 63 10.1. Summary . . . . . . . . . . . . . . . . . . . . . . . . 62
10.1.1. ID (Identifier) . . . . . . . . . . . . . . . . . . 63 10.1.1. ID (Identifier) . . . . . . . . . . . . . . . . . . 63
10.1.2. Name . . . . . . . . . . . . . . . . . . . . . . . . 63 10.1.2. Name . . . . . . . . . . . . . . . . . . . . . . . . 63
10.1.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . 63 10.1.3. URIs . . . . . . . . . . . . . . . . . . . . . . . . 63
10.1.4. Description . . . . . . . . . . . . . . . . . . . . 63 10.1.4. Description . . . . . . . . . . . . . . . . . . . . 63
10.1.5. Change Controller . . . . . . . . . . . . . . . . . 64 10.1.5. Change Controller . . . . . . . . . . . . . . . . . 64
10.1.6. Version (of Registry Format) . . . . . . . . . . . . 64 10.1.6. Version (of Registry Format) . . . . . . . . . . . . 64
10.2. Metric Definition . . . . . . . . . . . . . . . . . . . 64 10.2. Metric Definition . . . . . . . . . . . . . . . . . . . 64
10.2.1. Reference Definitions . . . . . . . . . . . . . . . 64 10.2.1. Reference Definitions . . . . . . . . . . . . . . . 64
10.2.2. Fixed Parameters . . . . . . . . . . . . . . . . . . 66 10.2.2. Fixed Parameters . . . . . . . . . . . . . . . . . . 66
10.3. Method of Measurement . . . . . . . . . . . . . . . . . 67 10.3. Method of Measurement . . . . . . . . . . . . . . . . . 67
10.3.1. Reference Methods . . . . . . . . . . . . . . . . . 67 10.3.1. Reference Methods . . . . . . . . . . . . . . . . . 67
10.3.2. Packet Stream Generation . . . . . . . . . . . . . . 69 10.3.2. Packet Stream Generation . . . . . . . . . . . . . . 69
10.3.3. Traffic Filtering (observation) Details . . . . . . 69 10.3.3. Traffic Filtering (observation) Details . . . . . . 69
10.3.4. Sampling Distribution . . . . . . . . . . . . . . . 69 10.3.4. Sampling Distribution . . . . . . . . . . . . . . . 69
10.3.5. Run-time Parameters and Data Format . . . . . . . . 69 10.3.5. Run-time Parameters and Data Format . . . . . . . . 69
10.3.6. Roles . . . . . . . . . . . . . . . . . . . . . . . 70 10.3.6. Roles . . . . . . . . . . . . . . . . . . . . . . . 70
10.4. Output . . . . . . . . . . . . . . . . . . . . . . . . . 70 10.4. Output . . . . . . . . . . . . . . . . . . . . . . . . . 70
10.4.1. Type . . . . . . . . . . . . . . . . . . . . . . . . 70 10.4.1. Type . . . . . . . . . . . . . . . . . . . . . . . . 70
10.4.2. Reference Definition . . . . . . . . . . . . . . . . 70 10.4.2. Reference Definition . . . . . . . . . . . . . . . . 70
10.4.3. Metric Units . . . . . . . . . . . . . . . . . . . . 72 10.4.3. Metric Units . . . . . . . . . . . . . . . . . . . . 72
10.4.4. Calibration . . . . . . . . . . . . . . . . . . . . 73 10.4.4. Calibration . . . . . . . . . . . . . . . . . . . . 72
10.5. Administrative items . . . . . . . . . . . . . . . . . . 73 10.5. Administrative items . . . . . . . . . . . . . . . . . . 73
10.5.1. Status . . . . . . . . . . . . . . . . . . . . . . . 73 10.5.1. Status . . . . . . . . . . . . . . . . . . . . . . . 73
10.5.2. Requestor . . . . . . . . . . . . . . . . . . . . . 73 10.5.2. Requestor . . . . . . . . . . . . . . . . . . . . . 73
10.5.3. Revision . . . . . . . . . . . . . . . . . . . . . . 73 10.5.3. Revision . . . . . . . . . . . . . . . . . . . . . . 73
10.5.4. Revision Date . . . . . . . . . . . . . . . . . . . 73 10.5.4. Revision Date . . . . . . . . . . . . . . . . . . . 73
10.6. Comments and Remarks . . . . . . . . . . . . . . . . . . 73 10.6. Comments and Remarks . . . . . . . . . . . . . . . . . . 73
11. Security Considerations . . . . . . . . . . . . . . . . . . . 73 11. Security Considerations . . . . . . . . . . . . . . . . . . . 73
12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 73 12. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 73
13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 74 13. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 73
14. References . . . . . . . . . . . . . . . . . . . . . . . . . 74 14. References . . . . . . . . . . . . . . . . . . . . . . . . . 74
14.1. Normative References . . . . . . . . . . . . . . . . . . 74 14.1. Normative References . . . . . . . . . . . . . . . . . . 74
14.2. Informative References . . . . . . . . . . . . . . . . . 76 14.2. Informative References . . . . . . . . . . . . . . . . . 76
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 78 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 78
1. Introduction 1. Introduction
This memo proposes an initial set of entries for the Performance This memo proposes an initial set of entries for the Performance
Metrics Registry. It uses terms and definitions from the IPPM Metrics Registry. It uses terms and definitions from the IPPM
literature, primarily [RFC2330]. literature, primarily [RFC2330].
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statistical summary. To describe both "raw" and one or more statistical summary. To describe both "raw" and one or more
statistics efficiently, the Identifier, Name, and Output Categories statistics efficiently, the Identifier, Name, and Output Categories
can be split and a single section can specify two or more closely- can be split and a single section can specify two or more closely-
related metrics. This section specifies two Registry entries with related metrics. This section specifies two Registry entries with
many common columns. See Section 7 for an example specifying many common columns. See Section 7 for an example specifying
multiple Registry entries with many common columns. multiple Registry entries with many common columns.
All column entries beside the ID, Name, Description, and Output All column entries beside the ID, Name, Description, and Output
Reference Method categories are the same, thus this section proposes Reference Method categories are the same, thus this section proposes
two closely-related registry entries. As a result, IANA is also two closely-related registry entries. As a result, IANA is also
asked to assign corresponding URNs and URLs to each Named Metric. asked to assign a corresponding URL to each Named Metric.
4.1. Summary 4.1. Summary
This category includes multiple indexes to the registry entry: the This category includes multiple indexes to the registry entry: the
element ID and metric name. element ID and metric name.
4.1.1. ID (Identifier) 4.1.1. ID (Identifier)
IANA is asked to assign different numeric identifiers to each of the IANA is asked to assign different numeric identifiers to each of the
two Named Metrics. two Named Metrics.
4.1.2. Name 4.1.2. Name
RTDelay_Active_IP-UDP-Periodic_RFCXXXXsecY_Seconds_95Percentile RTDelay_Active_IP-UDP-Periodic_RFCXXXXsecY_Seconds_95Percentile
RTLoss_Active_IP-UDP-Periodic_RFCXXXXsecY_Percent_LossRatio RTLoss_Active_IP-UDP-Periodic_RFCXXXXsecY_Percent_LossRatio
4.1.3. URIs 4.1.3. URIs
URN: Prefix urn:ietf:metrics:perf:<name>
URL: http://<TBD by IANA>/<name> URL: http://<TBD by IANA>/<name>
4.1.4. Description 4.1.4. Description
RTDelay: This metric assesses the delay of a stream of packets RTDelay: This metric assesses the delay of a stream of packets
exchanged between two hosts (which are the two measurement points), exchanged between two hosts (which are the two measurement points),
and the Output is the Round-trip delay for all successfully exchanged and the Output is the Round-trip delay for all successfully exchanged
packets expressed as the 95th percentile of their conditional delay packets expressed as the 95th percentile of their conditional delay
distribution. distribution.
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5.1.1. ID (Identifier) 5.1.1. ID (Identifier)
<insert numeric identifier, an integer> <insert numeric identifier, an integer>
5.1.2. Name 5.1.2. Name
OWPDV_Active_IP-UDP-Periodic_RFCXXXXsecY_Seconds_95Percentile OWPDV_Active_IP-UDP-Periodic_RFCXXXXsecY_Seconds_95Percentile
5.1.3. URIs 5.1.3. URIs
URI: Prefix urn:ietf:metrics:perf:<name>
URL: http://<TBD by IANA>/<name> URL: http://<TBD by IANA>/<name>
5.1.4. Description 5.1.4. Description
An assessment of packet delay variation with respect to the minimum An assessment of packet delay variation with respect to the minimum
delay observed on the periodic stream, and the Output is expressed as delay observed on the periodic stream, and the Output is expressed as
the 95th percentile of the packet delay variation distribution. the 95th percentile of the packet delay variation distribution.
5.1.5. Change Controller 5.1.5. Change Controller
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names. RFC 2681 [RFC2681] defines a Round-trip delay metric. We names. RFC 2681 [RFC2681] defines a Round-trip delay metric. We
build on that metric by specifying several of the input parameters to build on that metric by specifying several of the input parameters to
precisely define two metrics for measuring DNS latency and loss. precisely define two metrics for measuring DNS latency and loss.
Note to IANA: Each Registry "Name" below specifies a single registry Note to IANA: Each Registry "Name" below specifies a single registry
entry, whose output format varies in accordance with the name. entry, whose output format varies in accordance with the name.
All column entries beside the ID, Name, Description, and Output All column entries beside the ID, Name, Description, and Output
Reference Method categories are the same, thus this section proposes Reference Method categories are the same, thus this section proposes
two closely-related registry entries. As a result, IANA is also two closely-related registry entries. As a result, IANA is also
asked to assign corresponding URNs and URLs to each Named Metric. asked to assign corresponding URLs to each Named Metric.
6.1. Summary 6.1. Summary
This category includes multiple indexes to the registry entries, the This category includes multiple indexes to the registry entries, the
element ID and metric name. element ID and metric name.
6.1.1. ID (Identifier) 6.1.1. ID (Identifier)
<insert numeric identifier, an integer> <insert numeric identifier, an integer>
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Poisson One-way Delay, and one for UDP Poisson One-way Loss. Poisson One-way Delay, and one for UDP Poisson One-way Loss.
IANA Note: Registry "Name" below specifies a single registry entry, IANA Note: Registry "Name" below specifies a single registry entry,
whose output format varies according to the <statistic> element of whose output format varies according to the <statistic> element of
the name that specifies one form of statistical summary. There is an the name that specifies one form of statistical summary. There is an
additional metric name for the Loss metric. additional metric name for the Loss metric.
All column entries beside the ID, Name, Description, and Output All column entries beside the ID, Name, Description, and Output
Reference Method categories are the same, thus this section proposes Reference Method categories are the same, thus this section proposes
six closely-related registry entries. As a result, IANA is also six closely-related registry entries. As a result, IANA is also
asked to assign corresponding URNs and URLs to each Named Metric. asked to assign corresponding URLs to each Named Metric.
7.1. Summary 7.1. Summary
This category includes multiple indexes to the registry entries, the This category includes multiple indexes to the registry entries, the
element ID and metric name. element ID and metric name.
7.1.1. ID (Identifier) 7.1.1. ID (Identifier)
IANA is asked to assign different numeric identifiers to each of the IANA is asked to assign different numeric identifiers to each of the
six Metrics. six Metrics.
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o Max o Max
o StdDev o StdDev
OWLoss_Active_IP-UDP-Poisson- OWLoss_Active_IP-UDP-Poisson-
Payload250B_RFCXXXXsecY_Percent_LossRatio Payload250B_RFCXXXXsecY_Percent_LossRatio
7.1.3. URI and URL 7.1.3. URI and URL
URI: Prefix urn:ietf:metrics:perf:<name>
URL: http:\\www.iana.org\ ... <name> URL: http:\\www.iana.org\ ... <name>
7.1.4. Description 7.1.4. Description
OWDelay: This metric assesses the delay of a stream of packets OWDelay: This metric assesses the delay of a stream of packets
exchanged between two hosts (or measurement points), and reports the exchanged between two hosts (or measurement points), and reports the
<statistic> One-way delay for all successfully exchanged packets <statistic> One-way delay for all successfully exchanged packets
based on their conditional delay distribution. based on their conditional delay distribution.
where <statistic> is one of: where <statistic> is one of:
o 95Percentile o 95Percentile
o Mean o Mean
o Min
o Min
o Max o Max
o StdDev o StdDev
OWLoss: This metric assesses the loss ratio of a stream of packets OWLoss: This metric assesses the loss ratio of a stream of packets
exchanged between two hosts (which are the two measurement points), exchanged between two hosts (which are the two measurement points),
and the Output is the One-way loss ratio for all successfully and the Output is the One-way loss ratio for all successfully
received packets expressed as a percentage. received packets expressed as a percentage.
7.2. Metric Definition 7.2. Metric Definition
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Periodic One-way Delay, and one for UDP Periodic One-way Loss. Periodic One-way Delay, and one for UDP Periodic One-way Loss.
IANA Note: Registry "Name" below specifies a single registry entry, IANA Note: Registry "Name" below specifies a single registry entry,
whose output format varies according to the <statistic> element of whose output format varies according to the <statistic> element of
the name that specifies one form of statistical summary. There is an the name that specifies one form of statistical summary. There is an
additional metric name for the Loss metric. additional metric name for the Loss metric.
All column entries beside the ID, Name, Description, and Output All column entries beside the ID, Name, Description, and Output
Reference Method categories are the same, thus this section proposes Reference Method categories are the same, thus this section proposes
six closely-related registry entries. As a result, IANA is also six closely-related registry entries. As a result, IANA is also
asked to assign corresponding URNs and URLs to each Named Metric. asked to assign corresponding URLs to each Named Metric.
8.1. Summary 8.1. Summary
This category includes multiple indexes to the registry entries, the This category includes multiple indexes to the registry entries, the
element ID and metric name. element ID and metric name.
8.1.1. ID (Identifier) 8.1.1. ID (Identifier)
IANA is asked to assign a different numeric identifiers to each of IANA is asked to assign a different numeric identifiers to each of
the six Metrics. the six Metrics.
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o Max o Max
o StdDev o StdDev
OWLoss_Active_IP-UDP-Periodic- OWLoss_Active_IP-UDP-Periodic-
Payload142B_RFCXXXXsecY_Percent_LossRatio Payload142B_RFCXXXXsecY_Percent_LossRatio
8.1.3. URIs 8.1.3. URIs
URI: Prefix urn:ietf:metrics:perf:<name>
URL: http:\\www.iana.org\ ... <name> URL: http:\\www.iana.org\ ... <name>
8.1.4. Description 8.1.4. Description
OWDelay: This metric assesses the delay of a stream of packets OWDelay: This metric assesses the delay of a stream of packets
exchanged between two hosts (or measurement points), and reports the exchanged between two hosts (or measurement points), and reports the
<statistic> One-way delay for all successfully exchanged packets <statistic> One-way delay for all successfully exchanged packets
based on their conditional delay distribution. based on their conditional delay distribution.
where <statistic> is one of: where <statistic> is one of:
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This section specifies three initial registry entries for the ICMP This section specifies three initial registry entries for the ICMP
Round-trip Latency, and another entry for ICMP Round-trip Loss Ratio. Round-trip Latency, and another entry for ICMP Round-trip Loss Ratio.
This section specifies four Registry entries with many common This section specifies four Registry entries with many common
columns. columns.
All column entries beside the ID, Name, Description, and Output All column entries beside the ID, Name, Description, and Output
Reference Method categories are the same, thus this section proposes Reference Method categories are the same, thus this section proposes
two closely-related registry entries. As a result, IANA is also two closely-related registry entries. As a result, IANA is also
asked to assign four corresponding URNs and URLs to each Named asked to assign four corresponding URLs to each Named Metric.
Metric.
9.1. Summary 9.1. Summary
This category includes multiple indexes to the registry entry: the This category includes multiple indexes to the registry entry: the
element ID and metric name. element ID and metric name.
9.1.1. ID (Identifier) 9.1.1. ID (Identifier)
IANA is asked to assign different numeric identifiers to each of the IANA is asked to assign different numeric identifiers to each of the
four Named Metrics. four Named Metrics.
skipping to change at page 54, line 21 skipping to change at page 54, line 15
o Mean o Mean
o Min o Min
o Max o Max
RTLoss_Active_IP-ICMP-SendOnRcv_RFCXXXXsecY_Percent_LossRatio RTLoss_Active_IP-ICMP-SendOnRcv_RFCXXXXsecY_Percent_LossRatio
9.1.3. URIs 9.1.3. URIs
URN: Prefix urn:ietf:metrics:perf:<name>
URL: http://<TBD by IANA>/<name> URL: http://<TBD by IANA>/<name>
9.1.4. Description 9.1.4. Description
RTDelay: This metric assesses the delay of a stream of ICMP packets RTDelay: This metric assesses the delay of a stream of ICMP packets
exchanged between two hosts (which are the two measurement points), exchanged between two hosts (which are the two measurement points),
and the Output is the Round-trip delay for all successfully exchanged and the Output is the Round-trip delay for all successfully exchanged
packets expressed as the <statistic> of their conditional delay packets expressed as the <statistic> of their conditional delay
distribution, where <statistic> is one of: distribution, where <statistic> is one of:
skipping to change at page 63, line 4 skipping to change at page 62, line 41
This section specifies three initial registry entries for the Passive This section specifies three initial registry entries for the Passive
assessment of TCP Round-Trip Delay (RTD) and another entry for TCP assessment of TCP Round-Trip Delay (RTD) and another entry for TCP
Round-trip Loss Count. Round-trip Loss Count.
This section specifies four Registry entries with many common This section specifies four Registry entries with many common
columns. columns.
All column entries beside the ID, Name, Description, and Output All column entries beside the ID, Name, Description, and Output
Reference Method categories are the same, thus this section proposes Reference Method categories are the same, thus this section proposes
four closely-related registry entries. As a result, IANA is also four closely-related registry entries. As a result, IANA is also
asked to assign four corresponding URNs and URLs to each Named asked to assign four corresponding URLs to each Named Metric.
Metric.
10.1. Summary 10.1. Summary
This category includes multiple indexes to the registry entry: the This category includes multiple indexes to the registry entry: the
element ID and metric name. element ID and metric name.
10.1.1. ID (Identifier) 10.1.1. ID (Identifier)
IANA is asked to assign different numeric identifiers to each of the IANA is asked to assign different numeric identifiers to each of the
four Named Metrics. four Named Metrics.
skipping to change at page 63, line 38 skipping to change at page 63, line 31
RTDelay_Passive_IP-TCP-HS_RFCXXXXsecY_Seconds_Singleton RTDelay_Passive_IP-TCP-HS_RFCXXXXsecY_Seconds_Singleton
Note that a mid-point observer only has the opportuinty to compose a Note that a mid-point observer only has the opportuinty to compose a
single RTDelay on the TCP Hand Shake. single RTDelay on the TCP Hand Shake.
RTLoss_Passive_IP-TCP_RFCXXXXsecY_Packet_Count RTLoss_Passive_IP-TCP_RFCXXXXsecY_Packet_Count
10.1.3. URIs 10.1.3. URIs
URN: Prefix urn:ietf:metrics:perf:<name>
URL: http://<TBD by IANA>/<name> URL: http://<TBD by IANA>/<name>
10.1.4. Description 10.1.4. Description
RTDelay: This metric assesses the round-trip delay of TCP packets RTDelay: This metric assesses the round-trip delay of TCP packets
constituting a single connection, exchanged between two hosts. We constituting a single connection, exchanged between two hosts. We
consider the measurement of round-trip delay based on a single consider the measurement of round-trip delay based on a single
Observation Point [RFC7011] somewhere in the network. The Output is Observation Point [RFC7011] somewhere in the network. The Output is
the Round-trip delay for all successfully exchanged packets expressed the Round-trip delay for all successfully exchanged packets expressed
as the <statistic> of their conditional delay distribution, where as the <statistic> of their conditional delay distribution, where
 End of changes. 23 change blocks. 
30 lines changed or deleted 16 lines changed or added

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