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+---
+Author: János Kövesdi
+Version: 155 17-CNL 113 632, Rev. A
+Date: 2016-11-17
+
+---
+= NDP Protocol Modules for TTCN-3 Toolset with TITAN, Function Specification
+:author: János Kövesdi
+:revnumber: 155 17-CNL 113 632, Rev. A
+:revdate: 2016-11-17
+:toc:
+
+*Copyright*
+
+Copyright (c) 2000-2016 Ericsson Telecom AB. +
+All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 that accompanies this distribution, and is available at +
+http://www.eclipse.org/legal/epl-v10.html.
+
+== How to Read This Document
+
+This is the Function Specification for the set of NDP protocol modules. NDP protocol modules are developed for the TTCN-3 Toolset with TITAN.
+
+== Scope
+
+The purpose of this document is to specify the content of the NDP protocol modules.
+
+= General
+
+Protocol modules implement the message structures of the related protocol in a formalized way, using the standard specification language TTCN-3. This allows defining of test data (templates) in the TTCN-3 language and correctly encoding/decoding messages when executing test suites using the TITAN TTCN-3 test environment.
+
+Protocol modules are using TITAN’s RAW encoding attributes <<_1, [1]>> and hence are usable with the TITAN test toolset only.
+
+= Functional Specification
+
+== Protocol Version Implemented
+
+This protocol module contains the protocol messages and elements of the NDP protocol (see <<_3, [3]>>),
+
+[[modifications-deviations-related-to-the-protocol-specification]]
+== Modifications/Deviations Related to the Protocol Specification
+
+=== Implemented Messages
+
+All message types listed in protocol description are implemented.
+
+[[protocol-modifications-deviations]]
+=== Protocol Modifications/Deviations
+
+None.
+
+[[encoding-decoding-and-other-related-functions]]
+== Encoding/Decoding and Other Related Functions
+
+This product also contains encoding/decoding functions that provide for the correct encoding of messages when sent from TITAN and correct decoding of messages when received by TITAN. The encoder updates the checksum field with the correct value. Implemented encoding/decoding functions:
+
+[cols=3*,options=header]
+|===
+
+|Name |Type of formal parameters |Type of return value
+|`f_enc_PDU_NDP` |PDU_NDP, OCT16, OCT16 |octetstring
+|`f_dec_PDU_NDP` |octetstring |PDU_NDP
+|===
+
+There is also a function which verifies the checksum field in an encoded NDP message:
+
+[cols=3*,options=header]
+|===
+
+|Name |Type of formal parameters |Type of return value
+|`f_NDP_verify_checksum` |octetstring, OCT16, OCT16 |boolean
+|===
+
+= Terminology
+
+TITAN TTCN-3 Test Executor.
+
+== Abbreviations
+
+IETF:: Internet Engineering Task Force
+
+ICMPv6:: Internet Control Message Protocol for IPv6
+
+IPv6:: Internet Protocol Version 6
+
+NDP:: Neighbor Discovery Protocol
+
+RFC:: Request for Comments
+
+TTCN-3:: Testing and Test Control Notation version 3
+
+= References
+
+[[_1]]
+[1] Programmer’s Technical Reference for the TITAN TTCN-3 Test Executor
+
+[[_2]]
+[2] ETSI ES 201 873-1 v.3.1.1 (06/2005) +
+The Testing and Test Control Notation version 3. Part 1: Core Language
+
+[[_3]]
+[3] IETF https://tools.ietf.org/html/rfc4861[RFC 4861] +
+Neighbor Discovery for IP version 6 (IPv6)
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+---
+Author: János Kövesdi
+Version: 198 17-CNL 113 632, Rev. A
+Date: 2016-11-17
+
+---
+= NDP Protocol Modules for TTCN-3 Toolset with TITAN, User Guide
+:author: János Kövesdi
+:revnumber: 198 17-CNL 113 632, Rev. A
+:revdate: 2016-11-17
+:toc:
+
+*Copyright*
+
+Copyright (c) 2000-2016 Ericsson Telecom AB. +
+All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 that accompanies this distribution, and is available at +
+http://www.eclipse.org/legal/epl-v10.html.
+
+== About This Document
+
+=== How to Read This Document
+
+This is the User Guide for the NDP protocol module. The NDP protocol module is developed for the TTCN-3 Toolset with TITAN. This document should be read together with Function Specification <<_4, [4]>>.
+
+=== Presumed Knowledge
+
+To use this protocol module the knowledge of the TTCN-3 language <<_1, [1]>> is essential.
+
+== System Requirements
+
+Protocol modules are a set of TTCN-3 source code files that can be used as part of TTCN-3 test suites only. Hence, protocol modules alone do not put specific requirements on the system used. However in order to compile and execute a TTCN-3 test suite using the set of protocol modules the following system requirements must be satisfied:
+
+* TITAN TTCN-3 Test Executor 1.8.pl0.pre2 or higher installed. For installation guide see <<_3, [3]>>.
+
+NOTE: This version of the protocol module can not be used for defining 32bit unsigned or larger integers with TITAN versions earlier than 1.8.pl0.pre2. +
+This version of the protocol module is not compatible with TITANreleases earlier than R7A.
+
+= Protocol Modules
+
+== Overview
+
+Protocol modules implement the message structures of the corresponding protocol in a formalized way, using the standard specification language TTCN-3. This allows defining of test data (templates) in the TTCN-3 language <<_1, [1]>> and correctly encoding/decoding messages when executing test suites using the TITAN TTCN-3 test environment.
+
+Protocol modules are using TITAN’s RAW encoding attributes <<_2, [2]>> and hence are usable with the TITAN test toolset only.
+
+The table below contains the implemented NDP messages and the corresponding TTCN-3 type records. Using those type records, templates can be defined to send and receive a given message.
+
+[cols=",,",options="header",]
+|===
+|Message name |Reference |Corresponding type record in __NDP_Types.ttcn__
+|Router Solicitation |<<_5, [5]>> 4.1 |`NDP_RouterSolicitation`
+|Router Advertisement |<<_5, [5]>> 4.2 |`NDP_RouterAdvertisement`
+|Neighbor Solicitation |<<_5, [5]>> 4.3 |`NDP_NeighborSolicitation`
+|Neighbor Advertisement |<<_5, [5]>> 4.4 |`NDP_NeighborAdvertisement`
+|Redirect |<<_5, [5]>> 4.5 |`NDP_Redirect`
+|===
+
+== Installation
+
+The set of protocol modules can be used in developing TTCN-3 test suites using any text editor. However to make the work more efficient a TTCN-3-enabled text editor is recommended, for example `nedit`, `xemacs`. Since the NDP protocol module is used as a part of a TTCN-3 test suite, this requires TTCN-3 Test Executor and a C compiler be installed before the module can be compiled and executed together with other parts of the test suite. For more details on the installation of TTCN-3 Test Executor see the relevant parts of <<_2, [2]>>.
+
+== Configuration
+
+None.
+
+== Encoding, Decoding, Checksum Calculation
+
+Implemented encoding/decoding functions:
+
+[cols=3*,options=header]
+|===
+
+|Name |Type of formal parameters |Type of return value**
+|`f_enc_PDU_NDP` |PDU_NDP, OCT16, OCT16 |octetstring
+|`f_dec_PDU_NDP` |octetstring |PDU_NDP
+|===
+
+The encoding function `f_enc_PDU_NDP` performs basic RAW encoding <<_2, [2]>>. In addition to encoding functionality this function can calculate the `checksum` field. The checksum is automatically calculated during encoding if the user sets the `PDU_NDP’s` `checksum` field to `__`'0000'O`__`. For calculating the correct checksum the user needs to provide 2 additional parameters to the encoding function. These parameters are the `srcaddr` and `dstaddr`. The value of `srcaddr` is the source address in the IPv6 packet. The value of `dstaddr` is the destination address in the IPv6 packet. The default value for `srcaddr` is the dummy value `__`'00000000000000000000000000000000'O`__`. The default value for `dstaddr` is the dummy value `__`'00000000000000000000000000000000'O`__`. If the user sets the `PDU_NDP’s` `checksum` field to a value different from `_'0000'O_` then this user defined value will appear in the encoded message.
+
+The decoding function `f_dec_PDU_NDP` performs basic RAW decoding <<_2, [2]>>. The `checksum` field is not verified during decoding.
+
+There is an additional function which verifies the `checksum` field in an encoded NDP message:
+
+[cols=3*,options=header]
+|===
+
+|Name |Type of formal parameters |Type of return value
+|`f_NDP_verify_checksum` |octetstring, OCT16,OCT16 |boolean
+|===
+
+The inputs into this function are the encoded NDPmessage and the source and destination addresses of the IPv6 packet. The default value for `srcaddr` is the dummy value `__`'00000000000000000000000000000000'O`__`. The default value for `dstaddr` is the dummy value `_'00000000000000000000000000000000'O_`. The function returns `_true_` if the checksum is correct and `_false_` if it is incorrect.
+
+= Terminology
+
+TITAN TTCN-3 Test Executor.
+
+= Abbreviations
+
+IETF:: Internet Engineering Task Force
+
+IP:: Internet Protocol
+
+ICMPv6:: Internet Control Message Protocol for IPv6
+
+IPv6:: Internet Protocol Version 6
+
+NDP:: Neighbor Discovery Protocol
+
+RFC:: Request for Comments
+
+TTCN-3:: Testing and Test Control Notation version 3
+
+= References
+
+[[_1]]
+[1] ETSI ES 201 873–1 v.3.1.1 (06/2005) +
+The Testing and Test Control Notation version 3. Part 1: Core Language
+
+[[_2]]
+[2] Programmer’s Technical Reference for the TITAN TTCN-3 Test Executor
+
+[[_3]]
+[3] Installation Guide for the TITAN TTCN-3 Test Executor
+
+[[_4]]
+[4] NDP Protocol Modules for TTCN-3 Toolset with TITAN, Function Specification
+
+[[_5]]
+[5] IETF https://tools.ietf.org/html/rfc4861[RFC 4861] +
+Neighbor Discovery for IP version 6 (IPv6)
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