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Network Working Group Brian Bidulock
INTERNET-DRAFT OpenSS7 Corporation
October 16, 2005
Expires in April 2006
SS7 MTP2-User Adaptation Layer (M2UA)
SS7 Test Specifications
M2UA-SS7TEST
<draft-bidulock-sigtran-m2ua-ss7test-02.txt>
Status of this Memo
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This Internet-Draft will expire in April 2006.
Copyright
Copyright (C) The Internet Society (2005).
Abstract
This Internet-Draft provides information for the Internet community
on the implementation of test cases for testing the SS7 MTP2-User
Adaptation Layer [M2UA] Signalling Gateway (SG) based on the
conformance test specifications for SS7 MTP Level 2
[Q.780..M2PATEST05].
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1. Introduction
This draft provides details for implementation of testing of SS7
MTP-User Adaptation Layer [M2UA] Signalling Gateways (SG) based on the
test specifications for SS7 MTP Level 2 [Q.780..M2PATEST05]. The
general aspects for SS7 protocol testing [Q.780, M2PATEST05] describes
the requirement for an MTP Level 3 Simulator in the test environment
for SS7 MTP Level 2 testing [Q.781, M2PATEST05]. This MTP Level 3
Simulator is responsible for issuing and accepting request and
indication primitives as well as sending and receiving signalling
messages [Q.780, M2PATEST05].
This memo describes how the MTP Level 3 Simulator would use SS7
MTP2-User Adaptation Layer messages to test a Signalling Gateway
implementation of [M2UA].
1.1. Scope
Although the SS7 MTP Level 2 test cases [Q.781, M2PATEST05] are
applicable in entirety to SS7 signalling links implemented at the M2UA
Signalling Gateway, this memo details the mapping of M2UA messages to
SS7 Message Transfer Part (MTP) Signalling Link [Q.703, M2PA] signals
used in the SS7 MTP Level 2 tests [Q.781, M2PATEST05].
1.2. Abbreviations
ANSI --American National Standards Institute.
ASP --Application Server Process.
BSNT --Backward Sequence Number Transmitted.
CPT --Compatibility Test.
ETSI --European Telecommunications Standards Institute.
FSNC --Forward Sequence Number Confirmed.
I-D --Internet-Draft.
IETF --Internet Engineering Task Force.
IOT --Interoperability Test.
IPSP --IP Signalling Point.
ITU --International Telecommunications Union.
IUT --Implementation Under Test.
M2PA --SS7 MTP2-User Peer-to-Peer Adaptation Layer.
M2UA --SS7 MTP2-User Adaptation Layer.
MTP2 --MTP Level 2.
MTP --Message Transfer Part.
PT --Protocol Tester.
RFC --Request For Comments.
RTB --Retransmission Buffer.
SCTP --Stream Control Transmission Protocol.
SG --Signalling Gateway.
SGP --Signalling Gateway Process.
SP --Signalling Point.
SS7 --Signalling System No. 7.
TC --Test Case.
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TS --Test Suite.
VAT --Validation Test.
1.3. Terminology
Compatibility Test (CPT)-- A test where multiple implementations are
tested in interaction with each other to test for compatibility
between implementations.
Implementation Under Test (IUT)-- An implementation being tested (the
object of testing) as part of a validation, compatibility or
interoperability test within the test environment.
Interoperability Test (IOT)-- A test where multiple implementations
are tested in interaction with each other to test for
interoperability between implementations.
M2UA Monitor-- A device or function used to monitor, capture, record
and analyze the exchange of M2UA messages across and IP network
between implementations or protocol testers. This device function
may be integrated with a protocol tester.
MTP Level 3 Simulator-- A device or function used to simulate the SS7
MTP Level 3 [Q.704] to SS7 MTP Level 2 [Q.703, M2PA]
implementation. This device or function may be integrated within
the Test Environment. This device or function is normally
required for SS7 MTP Level 2 Test Specifications [Q.781, M2PA]
validation, compatibility or interoperability tests.
Protocol Tester (PT)-- A device or function used to generate normal or
abnormal messages and test sequences for the purpose of validation
testing.
Signalling Link-- A signalling link, SS7 [Q.703] or M2PA [M2PA], used
to carry SS7 MTP Level 2 signalling between IUT and PT.
Test Case-- A particular sequence of messages and patters that make up
a single validation, compatibility or interoperability test.
Test Environment-- The environment that contains the testing device
and functiosn necessary and sufficient for executing a test suite.
Test Suite-- A collection of test cases meant to acheive a specific
objective of validation, compatibility or interoperability
testing.
Validation Test (VAT)-- A test where a single implementation is tested
in interaction with a protocol tester to test for validation of
the implementation to a technical specification.
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1.4. Conventions
The keywords MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD,
SHOULD NOT, RECOMMENDED, NOT RECOMMENDED, MAY, and OPTIONAL, when they
appear in this document, are to be interpreted as described in RFC
2119 [RFC 2119].
2. Test Environment
The test environment for SS7 MTP Level 2 [Q.781, M2PATEST05] testing
is described in the General Aspects of SS7 testing [Q.780,
M2PATEST05]. There are two types of testing that are accomodated as
follows:
Validation Testing -- consists of validating a single Implementation
Under Test (IUT). This is performed by connecting the IUT to a
Protocol Tester (PT) within the test enviroment.
Validation testing is more extensive that compatibility testing.
This is because it is possible, with the use of the Protocol
Tester (PT), to generate messages and patterns, that cannot
normally be generated from an implementation, to test the response
of the Implementation Under Test (IUT) to abnormal conditions.
Compatibility Testing -- consists of testing the compatiability of one
Implementation Under Test (IUT) with another. This is performed
by connecting the IUTs together within the test environment.
Compatibility testing is less extensive than validation testing.
This is because it is not normally possible to generate non-
compliant test patterns with an implementation that conforms to
validation testing. However, compatibility tests are better at
testing the interoperability of two implementations.
Interoperability Testing -- consists of testing the interoperability
of one Implementation Under Test (IUT) with another. This is
performed by connecting the IUT together within the test
environment.
Interoperability testing is more extensive than compatibility
testing and less extensive than validation testing. Where
compatibility testing assumes that the IUT have passed validation
testing, interoperability testing makes no such assumption. In
addition, the test environment is expected to have more control
over the IUT in interoperability testing than in compatibility
testing. It may be possible to generate some message and command
or response sequences that would not normally by possible with an
IUT during compatibility testing.
The objectives of interoperability testing are often different
than compatibility testing. The object of compatibility testing
is to assure that an implementation that passes validation testing
is, in other respects not tested by validation testing, compatible
with other such implementations. The object of interoperability
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testing is to show that there exist implementations with which
each of the IUT being tested can indeed function.
Although they have different objectives, the test environment
configuration for interoperability testing is the same as that for
compatibility testing.
2.1. Test Configurations
This section details the Validation and Compatibility test
configurations used for testing M2UA SG and ASP for SS7 MTP Level 2
conformance.
2.1.1. Validation Test Configuration
Validation testing consists of validating a single Implementation
Under Test (IUT) for SS7 MTP Level 2 conformance. Several test
configurations can be used with M2UA Signalling Gateways (SG) and
Application Server Processes (ASP) as follows:
2.1.1.1. SS7 Validation Test Configuration
Figure 1 illustrates the Validation Test configuration. As
described in the SS7 Test Specification [Q.780, M2PATEST05], the SS7
Level 2 validation testing environment consists of the following
components:
(1) The Implementation Under Test (IUT) that is being validated a
position "SP A".
_____________________________________________________________
| |
| TEST ENVIRONMENT |
| MTP Level 3 Simulator |
| ___________ _____|_____ |
| | | | | |
| | PT |____________________| IUT | |
| | SP B | | Signalling | SP A | |
| |___________| | Link |___________| |
| SS7 PT | M2UA SG |
| | |
| ____|____ |
| | | |
| | Link | |
| | Monitor | |
| |_________| |
| |
|_____________________________________________________________|
Figure 1. Validation Test Configuration #1
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(2) The MTP Level 3 Simulator attached to the IUT at position "SP
A".
(3) The Protocol Tester (PT) performing validation tests at
position "SP B".
(4) A Signalling Link [Q.703 or M2PA] between the PT at position
"SP B" and the IUT at position "SP A".
(5) A Link Monitor monitoring the message exchange accross the
Signalling Link [Q.703 or M2PA]. This function MAY be
integrated with the Protocol Tester or the Test Environment.
For this configuration, the interface between the Implementation
Under Test (IUT) and the MTP Level 3 Simulator is that described in
the SS7 Test Specification [Q.780, M2PATEST05]. This is the normal
configuration for SS7 MTP Level 2 testing [Q.781, M2PATEST05] and is
not modified by this memo. Normal SS7 MTP Level 2 testing SHOULD be
performed on the M2UA SG before performing validation, compatibility
or interoperability tests in the other configurations described in
this memo.
2.1.1.2. SG Validation Test Configuration
Figure 2 illustrates the Validation Test configuration. As
described in the SS7 Test Specification [Q.780, M2PATEST05], the SS7
Level 2 validation testing environment consists of the following
components:
_____________________________________________________________
| |
| TEST ENVIRONMENT |
| MTP Level 3 Simulator |
| | |
| M2UA | SCTP |
| | Association |
| ___________ _____|_____ |
| | | | | |
| | PT |____________________| IUT | |
| | SP B | | Signalling | SP A | |
| |___________| | Link |___________| |
| SS7 PT | M2UA SG |
| | |
| ____|____ |
| | | |
| | Link | |
| | Monitor | |
| |_________| |
| |
|_____________________________________________________________|
Figure 2. Validation Test Configuration #2
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(1) The Implementation Under Test (IUT) that is being validated at
position "SP A".
(2) An MTP Level 3 Simulator attached to the IUT at position "SP
A".
(3) The Protocol Tester (PT) performing validation tests at
position "SP B".
(4) A Signalling Link [Q.703 or M2PA] between the PT at position
"SP B" and the IUT at position "SP A".
(5) A Link Monitor monitoring the message exchange accross the
Signalling Link [Q.703 or M2PA]. This function MAY be
integrated with the Protocol Tester or the Test Environment.
In addition, this memo specifies the interface between the
Implementation Under Test (IUT) and the MTP Level 3 Simulator [Q.780,
M2PATEST05] within the test environment.
The MTP Level 3 Simulator SHALL be attached to the IUT a position
"SP A" using an M2UA SCTP Association. The MTP Level 3 Simulator
SHALL inject and collect M2UA messages to and from the IUT during the
performance of SS7 MTP Level 2 testing [Q.781, M2PATEST05]. The MTP
Level 3 Simulator SHALL inject and collect the M2UA messages as
decribed in Section 4 of this document.
2.1.1.3. SG-ASP Validation Test Configuration
Figure 3 illustrates a Validation Test Configuration that includes
an ASP in the validation tests. In this case the MTP Level 3
Simulator is connected at the ASP rather than directly to the SG. In
this configuration, the combination of ASP and SG form the
Implementation Under Test (IUT).
For this configuration the interface between the MTP Level 3
Simulator and the M2UA ASP is the same as for normal SS7 MTP Level 2
Testing [Q.780..M2PATEST05]. The test envirnoment SHOULD include
monitoring of the M2UA SCTP Association to ensure the mapping between
SS7 MTP Level 2 [Q.703, M2PA] signals, SS7 MTP Level 2 Test
Specification [Q.781, M2PATEST05] commands, and SS7 MTP2-User
Adaptation Layer [M2UA] messages as described in Section 4.
2.1.2. Compatibility Test Configurations
Compatibility testing consists of testing two Implementations Under
Test (IUT) for compatibility with each other. Several test
configurations can be used with M2UA Signalling Gateways (SG) and
Application Server Processes (ASP) as follows:
2.1.2.1. SS7 Compatibility Test Configuration
Figure 4 illustrates the Compatibility Test configuration. As
described in the SS7 Test Specification [Q.780, M2PATEST05], The SS7
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_____________________________________________________________
| |
| TEST ENVIRONMENT |
| MTP Level 3 Simulator |
| _____|_____ |
| | | |
| | IUT | M2UA |
| | SP A | ASP |
| |___________| |
| | |
| M2UA | SCTP |
| | Association |
| ___________ _____|_____ |
| | | | | |
| | PT |____________________| IUT | |
| | SP B | | Signalling | SP A | |
| |___________| | Link |___________| |
| Protocol | M2UA SG |
| Tester | |
| ____|____ |
| | | |
| | Link | |
| | Monitor | |
| |_________| |
| |
|_____________________________________________________________|
Figure 3. Validation Test Configuration #3
_____________________________________________________________
| |
| TEST ENVIRONMENT |
| |
| MTP Level 3 Simulator MTP Level 3 Simulator |
| _____|_____ _____|_____ |
| | | | | |
| | IUT |____________________| IUT | |
| | SP B | | Signalling | SP A | |
| |___________| | Link |___________| |
| M2UA SG | M2UA SG |
| | |
| ____|____ |
| | | |
| | Link | |
| | Monitor | |
| |_________| |
| |
|_____________________________________________________________|
Figure 4. Compatibility Test Configuration #1
Level 2 compatibility testing environment consists of the following
components:
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(1) One Impementation Under Test (IUT) for compatibility testing at
position "SP A".
(2) An MTP Level 3 Simulator attached to the IUT at position "SP
A".
(3) Another Impementation Under Test (IUT) for compatibility
testing at position "SP B".
(4) Another MTP Level 3 Simulator attached to the IUT at position
"SP B".
(5) A Signalling Link [Q.703 or M2PA] between IUT at position "SP
A" and IUT at position "SP B".
(6) A Link Monitor monitoring the message exchange accross the
Signalling Link [Q.703 or M2PA].
For this configuration, the interface between each Implementation
Under Test (IUT) and the MTP Level 3 Simulator is that described in
the SS7 Test Specifications [Q.780, M2PATEST05]. This is the normal
configuration for SS7 MTP Level 2 testing [Q.781, M2PATEST05] and is
not modified by this memo. Normal SS7 MTP Level 2 testing SHOULD be
peformed on the M2UA SG before performing compatibility tests in the
other configurations described in this memo.
2.1.2.2. SG Compatibility Test Configuration
_____________________________________________________________
| |
| TEST ENVIRONMENT |
| |
| MTP Level 3 Simulator MTP Level 3 Simulator |
| | | |
| M2UA | SCTP M2UA | SCTP |
| | Association | Association |
| _____|_____ _____|_____ |
| | | | | |
| | IUT |____________________| IUT | |
| | SP B | | Signalling | SP A | |
| |___________| | Link |___________| |
| M2UA SG | M2UA SG |
| | |
| ____|____ |
| | | |
| | Link | |
| | Monitor | |
| |_________| |
| |
|_____________________________________________________________|
Figure 5. Compatibility Test Configuration #2
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Figure 5 illustrates the Compatibility Test configuration. As
described in the SS7 Test Specification [Q.780, M2PATEST05], The SS7
Level 2 compatibility testing environment consists of the following
components:
(1) One Impementation Under Test (IUT) for compatibility testing at
position "SP A".
(2) An MTP Level 3 Simulator attached to the IUT at position "SP
A".
(3) Another Impementation Under Test (IUT) for compatibility
testing at position "SP B".
(4) Another MTP Level 3 Simulator attached to the IUT at position
"SP B".
(5) A Signalling Link [Q.703 or M2PA] between IUT at position "SP
A" and IUT at position "SP B".
(6) A Link Monitor monitoring the message exchange accross the
Signalling Link [Q.703 or M2PA].
In addition, this memo specifies the interface between the
Implementation Under Test (IUT) and the MTP Level 3 Simulator [Q.780,
M2PATEST05] within the test environment.
The MTP Level 3 Simulators SHALL be attached to the IUT at position
"SP A" and the IUT at position "SP B" using an M2UA SCTP Association.
The MTP Level 3 Simulator SHALL inject and collect M2UA messages to
and from the IUT during the performance of SS7 MTP Level 2 testing
[Q.781, M2PATEST05]. The MTP Level 3 Simulator SHALL inject and
collect the M2UA messages as decribed in Section 4 of this document.
2.1.2.3. SG-ASP Compatibility Test Configuration
Figure 6 illustrates a Compatibility Test Configuration that
includes an ASP in the compatibility tests. In this case the MTP
Level 3 Simulator is connected at the ASP rather than directly to the
SGs. IN this configuration, the combination of each ASP and SG form
the two Implementations Under Test (IUT).
For this configuration, the interface between the MTP Level 3
Simulator and the M2UA ASP is the same as for normal SS7 MTP Level 2
Testing [Q.780..M2PATEST05]. The test environment SHOULD include
monitoring of the M2UA SCTP Association to ensure the mapping between
SS7 MTP Level 2 [Q.703, M2PA] signals, SS7 MTP Level 2 Test
Specification [Q.781, M2PATEST05] commands, and SS7 MTP2-User
Adaptation Layer [M2UA] messages as described in Section 4.
2.2. Testing Methodologies
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_____________________________________________________________
| |
| TEST ENVIRONMENT |
| |
| MTP Level 3 Simulator MTP Level 3 Simulator |
| _____|_____ _____|_____ |
| | | | | |
| | IUT | M2UA | IUT | M2UA |
| | SP A | ASP | SP B | ASP |
| |___________| |___________| |
| | | |
| M2UA | SCTP M2UA | SCTP |
| | Association | Association |
| _____|_____ _____|_____ |
| | | | | |
| | IUT |____________________| IUT | |
| | SP A | | Signalling | SP B | |
| |___________| | Link |___________| |
| M2UA SG | M2UA SG |
| | |
| ____|____ |
| | | |
| | Link | |
| | Monitor | |
| |_________| |
| |
|_____________________________________________________________|
Figure 6. Compatibility Test Configuration #3
2.2.1. Test Sequence
Testing of a particular M2UA SG implementation SHOULD be performed
in the following order.
(1) Validation Test Configuration #1 -- validation tests [Q.781
or M2PATEST05] directly.
(2) Validation Test Configuration #2 -- validation tests [Q.781
or M2PATEST05] with M2UA interface between SG and MTP Level 3
Simulator.
(3) Compatibility Test Configuration #1 -- compatibility tests
[Q.781 or M2PATEST05] directly.
(4) Compatibility Test Configuration #2 -- compatibility tests
[Q.781 or M2PATEST05] with M2UA interface between SG and MTP
Level 3 Simulator.
Testing of a particular M2UA ASP implementation against an SG
implementation (already tested per above) SHOULD be performed in the
following order:
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(5) Validation Test Configuration #3 -- validation tests [Q.781
or M2PATEST05] directly, with SG/ASP interaction within the
IUT.
(6) Compatibility Test Configuration #3 -- compatibility tests
[Q.781 or M2PATEST05] directly, with SG/ASP interaction within
the IUT.
In addtion, validation testing of the M2UA protocol between ASP and
SG SHOULD be performed independent of SS7 MTP Level 2 validation
testing in accordance with a validation test suite for M2UA[1]. Also,
compatibility testing of the M2UA protocol between ASP and SG SHOULD
be performed independent of SS7 MTP Level 2 compatibility testing in
accordance with a compatibility test suite for M2UA[2].
The normal methodology for testing SS7 MTP Level 2 [Q.781,
M2PATEST05] is to perform validation testing on an IUT before
performing compatibility testing. The tests presented in [Q.781
and M2PATEST05] test the functionality of the MTP Level 2 state
machines; however, they do not adequately test the L2 to L3 interface.
To complete validation and compatibility testing of M2UA, the
validation and compatibility tests presented in the SS7 MTP Level 3
Test Specification [Q.782] SHOULD be performed with the M2UA ASP in
the test environment to assure that the M2UA IUT has properly
implemented the L2 to L3 interface. The test environment for
executing [Q.782] tests are outside the scope of this document.
(7) MTP Level 3 Validation Tests -- validation tests [Q.781]
performed with SG/ASP interaction within the IUT.
(8) MTP Level 3 Compatibility Tests -- compatibility tests [Q.781]
performed with SG/ASP interaction within the IUT.
Notes for Section 2
[1] At the time of writing this memo, there did not exist an IETF
validation test suite specification for the M2UA protocol. The
author of this memo is working on the development of such a
specification.
[2] At the timer of writing this memo, there did not exist an IETF
compatibility test suite specificaiton for the M2UA protocol.
There does exist, however, several M2UA Interop test plans that
come close to such a specification. The author of this memo is
also working on the development of such a specification.
3. Tests
This section details the validation and compatibility tests to be
performed.
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3.1. Test Cases
In each test configuration, the applicable Validation tests or
Compatibility tests of the SS7 MTP Level 2 Test Specification [Q.781,
M2PATEST05], or other applicatble SS7 MTP Level 2 test specification,
SHALL be performed.
4. Mapping of Signals
The mapping of SS7 MTP Level 2 [Q.703, M2PA] signals, SS7 MTP Level
2 Test [Q.781, M2PATEST05] commands, and SS7 MTP2-User Adaptation
Layer [M2UA] messages are listed in Table 1. Each [Q.703, M2PA]
signal SHALL be mapped onto a [Q.781, M2PATEST05] command or
indication and onto a [M2UA] message. When the SS7 MTP Level 2
[Q.781, M2PATEST05] test case calls for a given [Q.703, M2PA] signal
or [Q.781, M2PATEST05] command or indication, the corresponding [M2UA]
message SHALL be injected or collected by the MTP Level 3 Simulator.
Table 1. Mapping of Q.703 Signals, Q.781 Commands and M2UA Messages
M2UA | M2UA | Q.703 | Q.781
Message | Parameter | Signal | Notation
------------+----------------------+--------------+------------
ESTABLISH | | Start | :start
Request | | |
------------+----------------------+--------------+------------
ESTABLISH | | In Service | <1>
Confirm | | |
------------+----------------------+--------------+------------
RELEASE | | Stop | :stop
Request | | |
------------+----------------------+--------------+------------
RELEASE | | <5> | <5>
Confirm | | |
------------+----------------------+--------------+------------
RELEASE | | Link | <2>
Indication | | Failure |
------------+----------------------+--------------+------------
STATE | STATUS_LPO_SET | Local | :set LPO
Request | | Processor |
| | Outage |
+----------------------+--------------+------------
| STATUS_LPO_CLR | Local | :clear LPO
| | Processor |
| | Recovered |
+----------------------+--------------+------------
| STATUS_EMER_SET | Emergency | :set EM
+----------------------+--------------+------------
| STATUS_EMER_CLR | Emergency | :clear EM
| | Ceases |
+----------------------+--------------+------------
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M2UA | M2UA | Q.703 | Q.781
Message | Parameter | Signal | Notation
------------+----------------------+--------------+------------
| STATUS_FLUSH_BUFFERS | Flush | <3>
| | Buffers |
+----------------------+--------------+------------
| STATUS_CONTINUE | Continue | <3>
+----------------------+--------------+------------
| STATUS_CLEAR_RTB | Clear | <3>
| | RTB |
+----------------------+--------------+------------
| STATUS_CONG_ACCEPT | Congestion | <4>
| | Accept |
+----------------------+--------------+------------
| STATUS_CONG_DISCARD | Congestion | :make
| | Discard | congestion
| | | state
+----------------------+--------------+------------
| STATUS_CONG_CLEAR | No | :clear
| | Congestion | congestion
| | | state
------------+----------------------+--------------+------------
STATE | | <5> | <5>
Confirm | | |
------------+----------------------+--------------+------------
STATE | EVENT_RPO_ENTER | Remote | <9>
Indication | | Processor |
| | Outage |
+----------------------+--------------+------------
| EVENT_RPO_EXIT | Remote | <9>
| | Processor |
| | Recovered |
------------+----------------------+--------------+------------
DATA | ACTION_RTRV_BSN | Retrieve | <7>
RETRIEVAL | | BSNT |
Request +----------------------+--------------+------------
| ACTION_RTRV_MSGS | Retrieval | <7>
| | Request |
| | and FSNC |
------------+----------------------+--------------+------------
DATA | ACTION_RTRV_MSGS | Retrieved | <7>
RETRIEVAL | | Message |
Confirm +----------------------+--------------+------------
| ACTION_RTRV_BSN | BSNT | <7>
------------+----------------------+--------------+------------
DATA | | Retrieval | <7>
RETRIEVAL | | Complete |
COMPLETE | | |
Indication | | |
------------+----------------------+--------------+------------
CONGESTION | | <6> | <6>
Indication | | |
------------+----------------------+--------------+------------
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M2UA | M2UA | Q.703 | Q.781
Message | Parameter | Signal | Notation
------------+----------------------+--------------+------------
DATA | | <5> | <5>
Acknowledge | | |
------------+----------------------+--------------+------------
DATA | | Message | <8>
Request | | for |
| | Transmission |
------------+----------------------+--------------+------------
DATA | | Received |
Indication | | Message |
------------+----------------------+--------------+------------
<10> | | Power On | :power ON
------------+----------------------+--------------+------------
<10> | | -- | :tx break
------------+----------------------+--------------+------------
Notes for Table 1:
<1> MTP Level 2 Test Specifications [Q.781, M2PATEST05] do not
provide a notation for "In Service" indication; however, in a
number of test cases it is necessary to establish that the link
is in the "In Service" state. The ESTABLISH Confirm [M2UA]
message sent by the SG can be used to confirm that the link has
acheived the "In Service" state.
<2> MTP Level 2 Test Specifications [Q.781, M2PATEST05] do not
provide a notation for "Link Failure" indication; however, in a
number of test cases it is necessary to establish that the link
has failed. The RELEASE Indication [M2UA] message sent by the SG
can be used to confirm that the link has failed.
<3> MTP Level 2 Test Specifications [Q.781, M2PATEST05] do not
provide a notation for "Flush Buffers," "Clear RTB," "Continue,"
or "Resume." However, use of these primitives is necessary in
some test cases (e.g. test case 4.1 [Q.781], test case 3.4.1
[M2PATEST05]). The STATE Request [M2UA] message with the
STATUS_FLUSH_BUFFERS, STATUS_CLEAR_RTB or STATUS_CONTINUE state
values SHOULD be used to perform these functions.
<4> MTP Level 2 Test Specifications [Q.781, M2PATEST05] do not
require the use of this request.
<5> There are no SS7 MTP Level 2 [Q.703, M2PA] signals or SS7 MTP
Level 2 Test [Q.781, M2PATEST05] actions that correspond to these
[M2UA] messages; however, these messages are required by the
[M2UA] specifications and it SHOULD be verified that the SG
issues these messages to the test enviroment under the
appropriate conditions during testing.
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<6> Although SS7 MTP Level 2 [Q.703, M2PA] provides signals to SS7
MTP Level 3 [Q.704] indicating congesiton onset and abatement
that use these [M2UA] messages, SS7 MTP Level 2 Tests [Q.781,
M2PATEST05] do not perform congestion testing that would generate
these indications to the test environment.
<7> MTP Level 2 Test Specifications [Q.781, M2PATEST05] do not test
retrieval. Retrieval tests are performed by SS7 MTP Level 3
testing [Q.782].
<8> MTP Level 2 Test Specifications [Q.781, M2PATEST05] do not have a
notation for signalling messages (other than indicating that an
MSU is sent or received); however, signalling messages are
exchanged between L2 and L3 as a normal course of most of the SS7
MTP Level 2 tests [Q.781, M2PATEST05].
<9> MTP Level 2 Test Specifications [Q.781, M2PATEST05] do not
provide a notation for "Remote Processor Outage" or "Remote
Processor Recovered" indications. These indications are not
required in SS7 MTP Level 2 tests [Q.781, M2PATEST05]; however,
these indications SHOULD be delivered to the test environment on
entry and exit from the "Remote Processour Outage" state.
<10> MTP Level 2 Test Specifications [Q.781, M2PATEST05] defines these
signals, and these signals are required within the test
environment [Q.780, M2PATEST05]; however, these signals are
outside the scope of the SS7 MTP2-User Adaptation Layer [M2UA]
protocol and SHOULD be generated by other means.
Note that it is possible that some implementations might use the
REGISTRATION Request or ASP-ACTIVE [M2UA] messages for powering
on the signalling link.
All of the applicable validation or compatibility tests of the SS7
MTP Level 2 Test Specification [Q.781, M2PATEST05] SHALL be performed
in this fashion with the mapping presented in Table 1. For other SS7
Conformance Test Specifications, a similar mapping and the test
configurations presented SHOULD be used.
5. Examples
Security Considerations
There are no security considerations for this draft.
IANA Considerations
There are no IANA considerations for this draft.
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0. Change History
This section provides historical information on the changes made to
this draft. This section will be removed from the document when the
document is finalized.
0.2. Changes from Version 0.1 to Version 0.2
(1) Updated first and last page to IETF boiler plate.
Updated dates, versions and references.
0.1. Changes from Version 0.0 to Version 0.1
Updated dates and references.
0.0. Version 0.0
This is the first version of this document.
0.0.0. Change Log
$Log: draft-bidulock-sigtran-m2ua-ss7test-02.me,v $
Revision 0.9.2.3 2005/10/17 11:53:44 brian
- updated drafts for republication
Revision 0.9.2.2 2005/05/14 08:33:15 brian
- copyright header correction
Revision 0.9.2.1 2004/08/21 10:14:37 brian
- Force checkin on branch.
Revision 0.9 2004/02/17 09:44:31 brian
- Baseline for documentation.
Revision 0.8.2.3 2003/07/28 13:10:34 brian
Reformatting.
Revision 0.8.2.2 2003/07/27 08:15:27 brian
Checking in changes.
Revision 0.8.2.1 2003/07/26 23:19:03 brian
Minor corrections to table.
Revision 0.8 2003/07/26 19:10:57 brian
Added new drafts.
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R. References
R.1. Normative References
[RFC 2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels," RFC 2119 - BCP 14, The Internet Society
(March 1997).
[M2UA] Morneault, K., Dantu, R., Sidebottom, G., Bidulock, B. and
Heitz, J., "Signaling System 7 (SS7) Message Transfer Part 2
(MTP2) - User Adaptation Layer," RFC 3331, Internet Engineering
Task Force - Signalling Transport Working Group (September,
2002).
[Q.780] ITU, "Signalling System No. 7 Test Specification -- General
Description," ITU-T Recommendation Q.780, ITU-T Telecommunication
Standardization Sector of ITU, Geneva (October 1995).
(Previously "CCITT Recommendation")
[Q.781] ITU, "Signalling System No. 7 - MTP Level 2 Test
Specification," ITU-T Recommendation Q.781, ITU-T
Telecommunication Standardization Sector of ITU, Geneva (March
1993). (Previously "CCITT Recommendation")
[M2PATEST05] Bidulock, B., "SS7 MTP-User Peer-to-Peer Adaptation
Layer Test Specifications (M2PA-TEST)," <draft-bidulock-sigtran-
m2pa-test-05.txt>, Internet Engineering Task Force - Signalling
Transport Working Group (February 24, 2005). Work In Progress.
[Q.703] ITU, "Signalling System No. 7 - Signalling Link," ITU-T
Recommendation Q.703, ITU-T Telecommunication Standardization
Sector of ITU, Geneva (March 1993). (Previously "CCITT
Recommendation")
[M2PA] George, T., Bidulock, B., Dantu, R., Schwarzbauer, H. J. and
Morneault, K., "Signaling System 7 (SS7) Message Transfer Part 2
(MTP2)-User Peer-to-Peer Adaptation Layer (M2PA)," RFC 4165,
Internet Engineering Task Force - Signalling Transport Working
Group (September 2005).
R.2. Informative References
[Q.704] ITU, "Message Transfer Part - Signalling Network Functions
and Messages," ITU-T Recommendation Q.704, ITU-T
Telecommunication Standardization Sector of ITU, Geneva (March
1993). (Previously "CCITT Recommendation")
[Q.782] ITU, "Specifications of Signalling System No. 7 -- Test
Specification -- MTP Level 3 Test Specification," ITU-T
Recommendation Q.782, ITU-T Telecommunication Standardization
Sector of ITU, Geneva (July 1996). (Previously "CCITT
Recommendation")
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Author's Addresses
Brian Bidulock
OpenSS7 Corporation
1469 Jeffreys Crescent
Edmonton, AB T6L 6T1
Canada
Phone: +1-780-490-1141
Email: [email protected]
URL: http//www.openss7.org/
This draft expires April 2006.
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List of Tables
Table 1. Mapping of Q.703 Signals, Q.781 Commands and M2UA
Messages ...................................................... 13
List of Illustrations
Figure 1. Validation Test Configuration #1 ...................... 5
Figure 2. Validation Test Configuration #2 ...................... 6
Figure 3. Validation Test Configuration #3 ...................... 8
Figure 4. Compatibility Test Configuration #1 ................... 8
Figure 5. Compatibility Test Configuration #2 ................... 9
Figure 6. Compatibility Test Configuration #3 ................... 11
Table of Contents
Status of this Memo ............................................. 1
Copyright ....................................................... 1
Abstract ........................................................ 1
1 Introduction .................................................. 2
1.1 Scope ....................................................... 2
1.2 Abbreviations ............................................... 2
1.3 Terminology ................................................. 3
1.4 Conventions ................................................. 4
2 Test Environment .............................................. 4
2.1 Test Configurations ......................................... 5
2.1.1 Validation Test Configuration ............................. 5
2.1.2 Compatibility Test Configurations ......................... 7
2.2 Testing Methodologies ....................................... 10
2.2.1 Test Sequence ............................................. 11
Notes for Section 2 ............................................. 12
3 Tests ......................................................... 12
3.1 Test Cases .................................................. 13
4 Mapping of Signals ............................................ 13
5 Examples ...................................................... 16
Security Considerations ......................................... 16
IANA Considerations ............................................. 16
0 Change History ................................................ 17
0.2 Changes from Version 0.1 to Version 0.2 ..................... 17
0.1 Changes from Version 0.0 to Version 0.1 ..................... 17
0.0 Version 0.0 ................................................. 17
0.0.0 Change Log ................................................ 17
R References .................................................... 18
R.1 Normative References ........................................ 18
R.2 Informative References ...................................... 18
Author's Addresses .............................................. 19
List of Tables .................................................. 20
List of Illustrations ........................................... 20
Table of Contents ............................................... 20
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Intellectual Property
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Disclaimer of Validity
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ENGINEERING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
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Full Copyright Statement
Copyright (C) The Internet Society (2005). This document is subject
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except as set forth therein, the authors retain all their rights.
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
B. Bidulock Version 0.2 Page 21
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