ETSI TS 103 243-3 V1.1.1 (2014-12)

Integrated broadband cable telecommunication networks (CABLE); Testing; Conformance test specifications for 6rd technology; Part 3: Abstract Test Suite (ATS) and Protocol Implementation eXtra Information for Testing (PIXIT)

DTS/CABLE-00015-3

General Information

• Status: Published
• Publication Date: 08-Dec-2014
• Technical Committee: CABLE WG4 - Network, Fault, Monitoring and Performance Management and Test & Measu
• Current Stage: 12 - Completion
• Due Date: 22-Dec-2014
• Completion Date: 09-Dec-2014

Standards Content (Sample)

ETSI TS 103 243-3 V1.1.1 (2014-12)






TECHNICAL SPECIFICATION
Integrated broadband cable
telecommunication networks (CABLE);
Testing;
Conformance test specifications for 6rd technology;
Part 3: Abstract Test Suite (ATS) and Protocol Implementation
eXtra Information for Testing (PIXIT)

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2 ETSI TS 103 243-3 V1.1.1 (2014-12)



Reference
DTS/CABLE-00015-3
Keywords
6rd, ATS, BR, CPE, IP, IPv6, transition
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3 ETSI TS 103 243-3 V1.1.1 (2014-12)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 7
4 Abstract test method . 8
4.1 Abstract protocol tester . 8
4.2 Test configurations . 9
4.2.1 CF01: CPE as IUT . 9
4.2.2 CF02: BR as IUT . 10
4.3 TTCN-3 Test architecture. 10
4.4 Ports and ASPs (Abstract Services Primitives) . 13
4.4.1 TTCN-3 ports. 13
4.4.2 Abstract Service Primitives . 13
5 Implemented Test Purposes . 14
6 ATS conventions . 15
6.1 Naming conventions . 15
6.1.1 General guidelines . 15
6.1.2 6rd specific TTCN-3 naming conventions . 16
6.1.3 Usage of Log statements . 17
6.1.4 Test Case (TC) identifier . 17
6.2 On line documentation . 18
Annex A (normative): Partial PIXIT proforma for 6rd . 19
A.1 Identification summary. 19
A.2 ATS summary . 19
A.3 Test laboratory . 19
A.4 Client identification . 19
A.5 SUT . 20
A.6 Protocol layer information. 20
A.6.1 Protocol identification . 20
A.6.2 IUT information . 21
Annex B (normative): PCTR Proforma for 6rd . 22
B.1 Identification summary. 22
B.1.1 Protocol conformance test report . 22
B.1.2 IUT identification . 22
B.1.3 Testing environment . 22
B.1.4 Limits and reservation . 23
B.1.5 Comments. 23
B.2 IUT Conformance status . 23
B.3 Static conformance summary . 23
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4 ETSI TS 103 243-3 V1.1.1 (2014-12)
B.4 Dynamic conformance summary . 24
B.5 Static conformance review report . 24
B.6 Test campaign report . 25
B.7 Observations . 26
Annex C (normative): TTCN-3 library modules . 27
C.1 Electronic annex, zip file with TTCN-3 code . 27
Annex D (informative): Bibliography . 28
History . 29

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5 ETSI TS 103 243-3 V1.1.1 (2014-12)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://ipr.etsi.org).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Integrated broadband cable
telecommunication networks (CABLE).
The present document is part 3 of a multi-part deliverable covering the conformance test specification for 6rd
technology.
Part 1: " Test requirements and Protocol Implementation Conformance Statement (PICS) proforma";
Part 2: "Test Suite Structure and Test Purposes (TSS&TP)";
Part 3: "Abstract Test Suite (ATS) and Protocol Implementation eXtra Information for Testing (PIXIT)".
The development of the present document follows the guidance provided in ETSI EG 202 798 [i.1]. Therefore the
present document is also based on the guidance provided in ETSI EG 202 798 [i.1].
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "may not", "need", "need not", "will",
"will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms
for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
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6 ETSI TS 103 243-3 V1.1.1 (2014-12)
1 Scope
The present document contains the Abstract Test Suite (ATS) for 6rd technology as defined in RFC 5969 [1] and
RFC 5569 [2] which address specific cable industry requirements as defined in ETSI TS 101 569-1 [10] in compliance
with the relevant requirements and in accordance with the relevant guidance given in ISO/IEC 9646-7 [6].
The objective of the present document is to provide a basis for conformance tests for 6rd technology equipment giving a
high probability of inter-operability between different manufacturer's equipment.
The ISO standards for the methodology of conformance testing (ISO/IEC 9646-1 [3] and ISO/IEC 9646-2 [4]) as well
as the ETSI rules for conformance testing (ETSI ETS 300 406 [7]) are used as a basis for the test methodology.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
reference document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] IETF RFC 5969: "IPv6 Rapid Deployment on IPv4 infrastructures - 6rd - Protocol Specification".
[2] IETF RFC 5569: "IPv6 Rapid Deployment on IPv4 infrastructures - 6rd".
[3] ISO/IEC 9646-1 (1994): "Information technology - Open Systems Interconnection - Conformance
testing methodology and framework - Part 1: General concepts".
[4] ISO/IEC 9646-2 (1994): "Information technology -- Open Systems Interconnection --
Conformance testing methodology and framework -- Part 2: Abstract Test Suite specification".
[5] ISO/IEC 9646-6 (1994): "Information technology -- Open Systems Interconnection --
Conformance testing methodology and framework -- Part 6: Protocol profile test specification".
[6] ISO/IEC 9646-7 (1995): "Information technology -- Open Systems Interconnection --
Conformance testing methodology and framework -- Part 7: Implementation Conformance
Statements".
[7] ETSI ETS 300 406 (1995): "Methods for testing and Specification (MTS); Protocol and profile
conformance testing specifications; Standardization methodology".
[8] ETSI ES 201 873-1: "Methods for Testing and Specification (MTS); The Testing and Test Control
Notation version 3; Part 1: TTCN-3 Core Language".
[9] ETSI TS 103 243-2: "Integrated broadband cable telecommunication networks (CABLE); Testing;
Conformance test specifications for 6rd technology; Part 2: Test Suite Structure and Test Purposes
(TSS&TP)".
[10] ETSI TS 101 569-1: "Integrated Broadband Cable Telecommunication Networks (CABLE); Cable
Network Transition to IPv6 Part 1: IPv6 Transition Requirements".
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7 ETSI TS 103 243-3 V1.1.1 (2014-12)
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI EG 202 798: "Intelligent Transport Systems (ITS); Testing; Framework for conformance and
interoperability testing".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in ETSI TS 101 569-1 [10],
ISO/IEC 9646-1 [3] and ISO/IEC 9646-7 [6] apply.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply.
3GPP Third Generation Partnership Project
6rd IPv6 Rapid Deployment
ALG Application Layer Gateway
ASP Abstract Service Primitives
ATM Abstract Test Method
ATS Abstract Test Suite
BR Border Router
CE Customer Edge router
CPE Customer Premises Equipment
DHCP Dynamic Host Configuration Protocol
DNS Domain Name System
FTP File Transfer Protocol
HTML HyperText Markup Language
HTTP HyperText Transfer Protocol
IP Internet Protocol
IPv4 IP version 4
IPv6 IP version 6
IUT Implementation Under Test
MSS (TCP) Maximum Segment Size
MTC Main Test Component
MTS Methods for Testing and Specification
MTU Maximum Transmission Unit
NAT Network Address Translation
OSI Open System Interconnection
PA Platform Adaptor
PDU Protocol Data Unit
PIXIT Protocol Implementation Extra Information for Testing
PTC Parallel Test Component
SUT System Under Test
TA Test Adaptor
TC Test Case
TP Test Purpose
TSS Test Suite Structure
TTCN Testing and Test Control Notation
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8 ETSI TS 103 243-3 V1.1.1 (2014-12)
4 Abstract test method
This clause describes the ATM used to test the 6rd technology.
4.1 Abstract protocol tester
An abstract protocol tester presented in figure 1 is a process providing the test behaviour for testing an IUT. Thus it will
emulate an entity which is capable of proving the IUT functionalities. This type of test architecture provides a situation
of communication which is equivalent to real operation between real devices. The test system will simulate valid and
invalid behaviours, and will analyse the reaction of the IUT. Then the test verdict, e.g. pass or fail, will depend on the
result of this analysis. Thus this type of test architecture enables to focus the test objective on the IUT behaviour only.
In order to access an IUT, the corresponding abstract protocol tester needs to use lower layers to establish a proper
connection to the system under test (SUT) over a physical link (Lower layers link).
Test system SUT
PDUs
Abstract protocol tester IUT
Lower layers
Lower layers
Lower layers link

Figure 1: Generic abstract protocol tester
The "Protocol Data Units" (PDUs) are the messages exchanged between the IUT and the abstract protocol tester which
permits to trigger the IUT and to analyse its reaction. The result of the analysis allows to assign the test verdict.
Further control actions on the IUT may be necessary from inside the SUT, for instance to simulate a primitive from the
upper layer or the management/security entity. Further details on such control actions are provided by means of an
upper tester presented in clause 4.3.
The above "Abstract Test Method" (ATM) is well defined in ISO/IEC 9646-1 [3] and supports a wide range of
approaches for testing including the TTCN-3 abstract test language [8].The abstract protocol tester used for 6rd test
suite is described in figure 2. The test system will send and receive IP packets, by using other upper layer protocols such
as DHCP, DNS and FTP, in order to analyse 6rd functionality.
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9 ETSI TS 103 243-3 V1.1.1 (2014-12)
Test System System Under Test
6rd
Functionality
DNS/FTP/
SIP/RTSP/etc*
IP packets
IPv4/IPv6
IPv4/IPv6
Ethernet
Ethernet
Lower Layers Link

NOTE: * Those protocols are used to prove certain 6rd functionalities.

Figure 2: Abstract Protocol Tester - 6rd
4.2 Test configurations
The test suite for 6rd uses two test configurations to cover the different test scenarios. Distinction between the two
configurations is given by the two main components in 6rd, which are the Customer Edge router (CE), also referred to
as a Customer Premises Equipment (CPE) and Border Relay router (BR).
4.2.1 CF01: CPE as IUT
In this configuration, the CPE is the IUT and the test system simulates a 6rd BR in one side and a IPv6 host in the other
side.
Test system (TTCN-3)
IPv6 Host -
Simulated
CPE - IUT
6rd BR -
Simulated


Figure 3: CF01, CPE device is the IUT
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10 ETSI TS 103 243-3 V1.1.1 (2014-12)
4.2.2 CF02: BR as IUT
In this configuration, the BR is the IUT and the test system simulates a 6rd CPE in one side and a IPv6 server in the
other side.
Test system (TTCN-3)
IPv6 server
- Simulated
BR - IUT
6rd CPE -
Simulated


Figure 4: CF01, BR device is the IUT
4.3 TTCN-3 Test architecture
In general, a conformance test system architecture based on TTCN-3 is as figure 5 shows.
6rd Test System SUT
Codec Test control Upper tester application
Upper tester
6rd Abstract Test Suite
6rd IUT
transport
Test adaptor
6rd lower
Upper tester 6rd lower
transport Layers Layers
Lower layer transport link
Upper tester transport link


Figure 5: Global test architecture
The "System Under Test" (SUT) contains:
• The "Implementation Under Test" (IUT), i.e. the object of the test.
• The "Upper tester application" enables to trigger or capture some actions (i.e. higher layer service primitives)
on the IUT.
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11 ETSI TS 103 243-3 V1.1.1 (2014-12)
• The "6rd lower layers" enable to establish a proper connection to the system under test (SUT) over a physical
link (Lower layer transport link).
• The "Upper tester transport" is a functionality, which enables the test system to communicate with the upper
tester application. Then the upper tester can be controlled by a TTCN-3 test component as part of the test
process.
The "6rd test system" contains:
• The "TTCN-3 test components" are processes providing the test behaviour. The test behaviour may be
provided as one single process or may require several independent processes.
• The "Codec" is a functional part of the test system to encode and decode messages between the TTCN-3
internal data representation and the format required by the related base standard.
• The "Test Control" enables the management of the TTCN-3 test execution (parameter input, logs, test
selection, etc.).
• The "Test adaptor" (TA) realizes the interface between the TTCN-3 ports using TTCN-3 messages, and the
physical interfaces provided by the IUT.
Based on the above test architecture, figure 6 shows a detailed test architecture used for the 6rd. The 6rd ATS requires
using several Parallel Test Components (PTC) dealing with specific communication protocols and a Main Test
Component (MTC) dealing with PTCs' synchronization. The different test components communicate with the 6rd SUT
over several ports (described in clause 4.4) which are used to exchange protocol messages between the test components
and the 6rd IUT.
The Upper tester entity enables triggering some functionalities by simulating actions or primitives from above
applications.
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12 ETSI TS 103 243-3 V1.1.1 (2014-12)
6rd TTCN-3 ATS
DHCPv6 Http
component component
SSyncync
6rd por port t
component
(sync)
Upper tester / CPE Monitoring Hosts BR
external functions component component components component
control
UT
port
Test Adaptor (TA)*
CODECS
IPv4 IPv6 DHCP HTTP
IPv4
IPv4 IPv6 Dhcpv6 Http
port
port port port port

6rd lower layers stack
External Upper Tester
functions Transport

Platform Adaptor (PA) System Adaptor (SA)
UT IPv4 IPv6

port port port

NOTE: * Test Adaptor (TA) is out of scope.

Figure 6: 6rd TTCN-3 test architecture
The following protocol test components are available. Each of these components can be mapped to either a "Main Test
Component" (MTC), when only one component shall be executed, or to a "Parallel Test Component" (PTC), if several
components shall be used.
• CPE: This component simulates an CPE entity and its functionality.
• BR: This component simulates an BR entity and its functionality.
• HOST: These components simulate one or more hosts (one component per host).
• MONITORING: This component is used to monitor traffic from the IUT.
• DHCP: This component simulates a DHCPv6 Client.
• HTTP: This component simulates a HTTP client.
The Sync component is mapped to the MTC and is used to trigger and synchronize the PTCs in order to orchestrate the
test environment executed by the PTCs. In addition, it starts and terminates the test cases.
The upper tester external functions control represents the functions which the protocol test components may use to
control the upper tester which is located in the SUT. These functions may use either external functions or dedicated
messages and a dedicated port to realize synchronization. These functions can be executed in the protocol test
components.
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13 ETSI TS 103 243-3 V1.1.1 (2014-12)
4.4 Ports and ASPs (Abstract Services Primitives)
4.4.1 TTCN-3 ports
The 6rd Test Suite implements the following ports:
• Ipv6Port, to send and receive IPv6 packets.
• Ipv4Port, to send and receive IPv4 packets.
• Dhcpv6Port, to send and receive DHCPv6 messages.
• HttpPort, to trigger the following HTTP actions: data sending (both IPv4 and IPv6). It can monitor incoming
traffic.
• UtPort, included in order to be able to stimulate the IUT and receive extra information from IUT upper layers
(it is not used in the current implementation and is provided for future expansion).
4.4.2 Abstract Service Primitives
Abstract service primitives are commands or actions that need to be performed on the IUT in order to trigger certain
behaviour or to obtain information about the IUT state.
The list of ASP used in the 6rd ATS is shown in table 1.
Table 1: 6rd Abstract Service Primitives
TTCN-3 text Action/Command Description
Is Gateway Prefix withdrawn? Action To check that the gateway prefix is withdrawn
Remove the routes for the next hop Command To remove the routes from IUT routing tables
Remove the cache Command To remove the IUT cache
Simulate a hardware failure Command To simulate an IUT hardware failure

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14 ETSI TS 103 243-3 V1.1.1 (2014-12)
5 Implemented Test Purposes
Table 2 shows the test purposes from [9] which have been implemented and included in the present document.
Table 2: Implemented Test Purposes
Unt
TP Identifier TC Identifier Group Subgroup PICS esta Implemented
ble
Gateway
TP/6RD/CPE/GWA/BV/01 TC_6RD_CPE_GWA_BV_01 PICS_ROLE_IS_CPE Yes
Assignment
TP/6RD/ CPE/BF/BV/01 TC_6RD_CPE_BF_BV_001 Basic Function PICS_ROLE_IS_CPE Yes

TP/6RD/CPE/FRAG/BV/01 TC_6RD_CPE_FRAG_BV_01 PICS_ROLE_IS_CPE Yes
CPE

Fragmentation
TP/6RD/CPE/FRAG/BV/02 TC_6RD_CPE_FRAG_BV_02 PICS_ROLE_IS_CPE Yes

TP/6RD/ CPE/ MSSC/BV/01 TC_6RD_CPE_MSSC_BV_01 MSS Clamping PICS_ROLE_IS_CPE Yes

TP/6RD/CPE/TI/BV/01 TC_6RD_CPE_TI_BV_01 Tunnel Identifier PICS_ROLE_IS_CPE Yes

TP/6RD/BR/BF/BV/01 TC_6RD_BR_BF_BV_01 Basic Function PICS_ROLE_IS_BR Yes

PICS_ROLE_IS_BR,
TP/6RD/BR/SC/BV/01 TC_6RD_BR_SC_BV_01 Session Control Yes
PICS_PORT_RANGE
TP/6RD/BR/FRAG/BV/01 TC_6RD_BR_FRAG_BV_01 PICS_ROLE_IS_BR Yes

Fragmentation
PICS_ROLE_IS_BR,
TP/6RD/BR/FRAG/BV/02 TC_6RD_BR_FRAG_BV_02 Yes
PICS_ICMP_ECHO_REQUEST
TP/6RD/BR/MSSC/BV/01 TC_6RD_BR_MSSC_BV_01 MSS Clamping PICS_ROLE_IS_BR Yes

TP/6RD/BR/NT/BV/01 TC_6RD_BR_NT_BV_01 NAT Timers PICS_ROLE_IS_BR Yes

Anycast
TP/6RD/BR/AA/BV/01 TC_6RD_BR_AA_BV_01 PICS_ROLE_IS_BR Yes
BR Addressing
TP/6RD/BR/AW/BV/01 TC_6RD_BR_AW_BV_01 PICS_ROLE_IS_BR Yes

PICS_ROLE_IS_BR,
TP/6RD/BR/AW/BV/02 TC_6RD_BR_AW_BV_02 PICS_RT_GRT_UPSTREAM_VR Yes
Address
F_UPSTREAM
Withdrawal
PICS_ROLE_IS_BR,
TP/6RD/BR/AW/BV/03 TC_6RD_BR_AW_BV_03 PICS_RT_GRT_UPSTREAM_VR Yes

F_UPSTREAM
TP/6RD/BR/RT/BV/01 TC_6RD_BR_RT_BV_01 PICS_ROLE_IS_BR Yes

Routing Tables
TP/6RD/BR/RT/BV/02 TC_6RD_BR_RT_BV_02 PICS_ROLE_IS_BR Yes


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15 ETSI TS 103 243-3 V1.1.1 (2014-12)
6 ATS conventions
The ATS conventions are intended to give a better understanding of the ATS but they also describe the conventions
made for the development of the ATS. These conventions shall be considered during any later maintenance or further
development of the ATS.
6.1 Naming conventions
This test suite follows the naming convention guidelines provided in [7] and [i.1].
6.1.1 General guidelines
The naming convention is based on the following underlying principles:
• Identifiers should be prefixed with a short alphabetic string (specified in table 3) indicating the type of
TTCN-3 element it represents.
• Suffixes should not be used except in those specific cases identified in table 3.
• Prefixes and suffixes should be separated from the body of the identifier with an underscore ("_").
EXAMPLE 1: c_sixteen, t_wait.
• Only module names, data type names and module parameters shoul
...