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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">tuzsut</journal-id><journal-title-group><journal-title xml:lang="ru">Труды учебных заведений связи</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Telecommunication Universities</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1813-324X</issn><issn pub-type="epub">2712-8830</issn><publisher><publisher-name>СПбГУТ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31854/1813-324X-2024-10-2-34-47</article-id><article-id custom-type="edn" pub-id-type="custom">JCNBES</article-id><article-id custom-type="elpub" pub-id-type="custom">tuzsut-567</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЭЛЕКТРОНИКА, ФОТОНИКА, ПРИБОРОСТРОЕНИЕ И СВЯЗЬ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ELECTRONICS, PHOTONICS, INSTRUMENTATION AND COMMUNICATIONS</subject></subj-group></article-categories><title-group><article-title>Моделирование процесса обработки меток времени на устройствах транспортной сети</article-title><trans-title-group xml:lang="en"><trans-title>Modelling of Timestamp Processing  within Transport Network Equipment</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1578-2629</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Канаев</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kanaev</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор технических наук, профессор, профессор кафедры «Электрическая связь»</p></bio><email xlink:type="simple">kanaevak@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4549-787X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казакевич</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazakevich</surname><given-names>E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент, заведующий кафедрой «Электрическая связь» </p></bio><email xlink:type="simple">kev-pgups@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5067-8539</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сахарова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Saharova</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук, доцент, доцент кафедры «Электрическая связь» </p></bio><email xlink:type="simple">maryazuvaka@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-5513-9302</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Прошин</surname><given-names>Ф. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Proshin</surname><given-names>F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры «Электрическая связь» </p></bio><email xlink:type="simple">fedorproshin@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Петербургский государственный университет путей сообщения Императора Александра I<country>Россия</country></aff><aff xml:lang="en">Emperor Alexander I St. Petersburg State Transport University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>04</day><month>05</month><year>2024</year></pub-date><volume>10</volume><issue>2</issue><fpage>34</fpage><lpage>47</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Канаев А.К., Казакевич Е.В., Сахарова М.А., Прошин Ф.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Канаев А.К., Казакевич Е.В., Сахарова М.А., Прошин Ф.А.</copyright-holder><copyright-holder xml:lang="en">Kanaev A., Kazakevich E., Saharova M., Proshin F.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://tuzs.sut.ru/jour/article/view/567">https://tuzs.sut.ru/jour/article/view/567</self-uri><abstract><p>Современные телекоммуникационные сети строятся на основе различных технологий передачи и обработки данных. Большая нагрузка на узлы транспортного уровня требует обеспечения качественной синхронизации расположенного на них оборудования. Транспортная сеть выступает в качестве важного элемента, передающего шкалу времени на ведомые устройства. Использование принципов временного мультиплексирования и обработки высокоскоростных потоков с разделением по длине волны (OTN, аббр. от англ. Optical Transport Network) и классических сетей на основе Ethernet в качестве системы транспортного уровня требует наличия точного временного согласования, что может обеспечиваться при поддержке функций работы по протоколу точного времени (PTP, аббр. от англ. Precision Time Protocol). Предлагается аппарат моделирования процессов обмена пакетами, которые содержат сообщения PTP, на уровне мультиплексоров OTN и участке транспортной IP-подсети, построенной на маршрутизаторах. Процесс прохождения пакетов по сети рассмотрен с точки зрения базовых процессов обработки. Рассмотрено влияние нагрузки в сети на скорость обработки пакетов на маршрутизаторах и эффективность применения алгоритмов упреждающего кодирования (Forward Error Correction) на быстродействие мультиплексоров OTN. Приведены экспериментальные данные по распределению задержек и дана оценка асимметрии на оборудовании при различных условиях функционирования.</p></abstract><trans-abstract xml:lang="en"><p>The modern telecommunication networks are forming on the basis of different transmission and data processing technologies. High load on the transport layer nodes demands quality synchronization of equipment that works on it. The transport network is an important element which delivers the time scale to slave nodes. Using the time-division multiplexing for the high-speed channel processing with the use of wavelength division multiplexing (OTN, Optical Transport Network) and classic Ethernet networks as a transport layer systems needs the precision time synchronization which can be achieved with the use of Precision Time Protocol (PTP). The modeling apparatus of PTP messages exchanging within OTN multiplexers and IP-network based on the routers are suggested. The packet transferring through the network are given as sequence of simple processing steps. The impact of a network load on PTP information processing capacity on the routers and efficiency of the Forward Error Correction algorithm for OTN equipment are analyzed. The experimental distribution of variable delays on that network elements are given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оптическая транспортная сеть</kwd><kwd>OTN</kwd><kwd>транспортная сеть Ethernet</kwd><kwd>уровень агрегации</kwd><kwd>обработка PTP</kwd><kwd>задержка обработки</kwd><kwd>сетевая синхронизация</kwd><kwd>алгоритм Forward Error Correction</kwd></kwd-group><kwd-group xml:lang="en"><kwd>optical transport network</kwd><kwd>OTN</kwd><kwd>Ethernet transport network</kwd><kwd>aggregation layer</kwd><kwd>PTP processing</kwd><kwd>processing delay</kwd><kwd>network synchronization</kwd><kwd>Forward Error Correction</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Рекомендация МСЭ-T G.709/Y.1331 (11/2022) Интерфейсы оптической транспортной сети (OTN).</mixed-citation><mixed-citation xml:lang="en">Rec. ITU-T G.709/Y.1331. 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