ITU-T SERIES G SUPP 49-2011 Rogue optical network unit (ONU) considerations (Study Group 15)《欺诈光网络单元(ONU)注意事项 15号研究组》.pdf
《ITU-T SERIES G SUPP 49-2011 Rogue optical network unit (ONU) considerations (Study Group 15)《欺诈光网络单元(ONU)注意事项 15号研究组》.pdf》由会员分享,可在线阅读,更多相关《ITU-T SERIES G SUPP 49-2011 Rogue optical network unit (ONU) considerations (Study Group 15)《欺诈光网络单元(ONU)注意事项 15号研究组》.pdf(16页珍藏版)》请在麦多课文档分享上搜索。
1、 International Telecommunication Union ITU-T Series GTELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Supplement 49(02/2011) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Rogue optical network unit (ONU) considerations ITU-T G-series Recommendations Supplement 49 ITU-T G-SERI
2、ES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON
3、METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G
4、.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS
5、G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. G series Supplement 49 (02/2011) i Supplement 49 to ITU-T G-series Recommendations Rogue optical network unit (ONU) considerations Summary Supp
6、lement 49 to ITU-T G-series Recommendations provides additional guidelines relative to ITU-T G.984.x-series and ITU-T G.987.x-series Recommendations, and other passive optical networks (PONs). It addresses the issue of rogue optical network units (ONUs), their prevention, detection, isolation and mi
7、tigation. History Edition Recommendation Approval Study Group 1.0 ITU-T G Suppl. 49 2011-02-25 15 ii G series Supplement 49 (02/2011) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication te
8、chnologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Tel
9、ecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some
10、areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this publication, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized ope
11、rating agency. Compliance with this publication is voluntary. However, the publication may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the publication is achieved when all of these mandatory provisions are met. The words “shall“ or so
12、me other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the publication is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or im
13、plementation of this publication may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the publication development process. A
14、s of the date of approval of this publication, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this publication. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to c
15、onsult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2011 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. G series Supplement 49 (02/2011) iii Table of Contents Page 1 Scope 1 2 Rogue condition c
16、auses and prevention . 1 2.1 Unauthorized transmission errors . 1 2.2 Software errors . 2 2.3 Media access control errors 3 2.4 Transceiver error 3 3 Rogue detection, isolation, and mitigation . 4 3.1 General . 4 3.2 Detection . 4 3.3 Isolation 5 4 Abbreviations and acronyms 6 G series Supplement 49
17、 (02/2011) 1 Supplement 49 to ITU-T G-series Recommendations Rogue optical network unit (ONU) considerations 1 Scope A passive optical network has a shared medium in the upstream direction, and the passive ODN combines all ONU outputs towards the OLT. Therefore, an ONU that is not transmitting in a
18、manner consistent with parameters specified in the standard can threaten all upstream transmissions on the PON causing interference and disrupting communications of all ONUs on the PON. An ONU that transmits optical power up the PON in violation of the parameters of the standard is called a “rogue O
19、NU“. This kind of situation is not unique to PONs, as many wireless and RF-based systems use the same shared channel scheme. However, under certain hardware and software conditions (attributed to circumstances including design, manufacturing, device failure, environmental, external, or other influen
20、ces), an ONU may exhibit behaviour that disrupts the operation of other ONUs on the same PON. Such rogue ONU behaviour can cause performance issues or outages for one or more ONUs on the PON. Also, diagnosing and isolating the offending ONU can be difficult since the affected ONUs are not always the
21、 ONUs causing the disruption. This Supplement raises the awareness of rogue ONU behaviour and provides system designers and implementers with techniques and tools to facilitate the prevention, detection, isolation, and removal of the offending ONU to avert or minimize service interruptions to other
22、ONUs on the PON. This treatment distinguishes a rogue ONU from a unit that intentionally or maliciously transmits optical signals that are not in accordance with the standard. In the strictest sense, these devices or intentional jammers are not ONUs, since they are not following the ITU-T Recommenda
23、tions that describe ONUs. They are essentially illegal devices that intend to deny or steal service from the network. However, these devices may exhibit behaviour and use processes that are similar to rogue ONUs and, therefore, considerations contained in this Supplement may assist in mitigating the
24、ir potential impact. Security measures are specified in the standard to further assist in reducing threats from malicious sources. The following clauses consider several rogue conditions that can occur and the design measures that can be employed to address them. Rogue ONU prevention, detection, iso
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