1、 ETSI ES 203 136 V1.2.1 (2017-10) Environmental Engineering (EE); Measurement methods for energy efficiency of router and switch equipment ETSI STANDARD ETSI ETSI ES 203 136 V1.2.1 (2017-10) 2 Reference RES/EE-EEPS30 Keywords configuration, EEER, router, switch ETSI 650 Route des Lucioles F-06921 So
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7、 foregoing restriction extend to reproduction in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are trademarks of ETSI registered for the benefit of its Members and of the 3GPP O
8、rganizational Partners. oneM2M logo is protected for the benefit of its Members. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI ES 203 136 V1.2.1 (2017-10) 3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g3Introduction 4g3
9、1 Scope 5g32 References 5g32.1 Normative references . 5g32.2 Informative references 5g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 Equipment Classification . 6g34.1 Router . 6g34.2 Switch . 7g35 Definitions of the Equipment Energy Efficiency Ratio for Router and
10、Switch . 7g36 Measurement Methods . 10g36.1 Measurement conditions . 10g36.2 Equipment Configuration . 11g36.3 Measurement Procedures . 11g36.4 Alternative Measurement Method 13g3History 15g3ETSI ETSI ES 203 136 V1.2.1 (2017-10) 4 Intellectual Property Rights Essential patents IPRs essential or pote
11、ntially 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
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13、e 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. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by
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15、ices or organizations associated with those trademarks. Foreword This ETSI Standard (ES) has been produced by ETSI Technical Committee Environmental Engineering (EE). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“,
16、“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. Introduction The present document defines the energy consump
17、tion metrics and measurement methods for router and Ethernet switch equipment. ETSI ETSI ES 203 136 V1.2.1 (2017-10) 5 1 Scope The present document defines the methodology and the test conditions to measure the power consumption of router and switch equipment. The present document is applicable to C
18、ore, edge and access routers. Home gateways are not included in the present document. 2 References 2.1 Normative 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 appl
19、ies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at https:/docbox.etsi.org/Reference/. NOTE: While any hyperlinks included in t
20、his clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 ATIS-0600015.03.2009: “Energy Efficiency for Telecommunication Equipment: Methodology for Measurement and
21、Reporting for Router and Ethernet Switch Products“. 2 ATIS-0600015: “Energy Efficiency for Telecommunication Equipment: Methodology for Measurement and Reporting - General Requirements“. 2.2 Informative references References are either specific (identified by date of publication and/or edition numbe
22、r or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI
23、 cannot guarantee their long term validity. 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 EN 300 132-2: “Environmental Engineering (EE); Power supply interface at the input
24、to telecommunications and datacom (ICT) equipment; Part 2: Operated by -48 V direct current (dc)“. ETSI ETSI ES 203 136 V1.2.1 (2017-10) 6 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: aggregation mode: mode in wh
25、ich, a few (typically higher bandwidth) ports on the equipment are considered UPLINK ports; while majority (typically lower bandwidth) ports are considered user ports NOTE: In this configuration the data flow is strictly from user ports to uplink ports and vice versa. User ports do not communicate w
26、ith each other through this equipment. core mode: mode in which all ports are considered similar and have similar bandwidth NOTE: In this configuration the data flow is so that each port communicate with one another. maximum configuration: configuration with maximum capacity where whole slots of the
27、 equipment are configured with maximum interface bandwidth line cards, all of the interfaces can work at the maximum data rate 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AC Alternating Current ATM Asynchronous Transfer Mode DC Direct Current EE Ene
28、rgy EfficiencyEEER Equipment Energy Efficiency Ratio EER Energy Efficiency Rating EUT Equipment Under Test FDDI Fibre Distributed Data Interface FE Fast Ethernet GE Giga EthernetIMIX Internet MIX traffic IP Internet ProtocolMPU Main Processing Unit NDR Non Drop Rate OSI Open System Interconnection P
29、AR Peak to Average Ratio PoE Power other Ethernet QoS Quality of Service 4 Equipment Classification 4.1 Router Routers are typical packet switching equipment running at the network layer of OSI layer 3. The router selects the optimal route according to the destination address of the received packet
30、through a network and forwards the packet to the next router. The last router is responsible for sending the packet to the destination host. Routers connect different physical networks and manually configure and run standard protocols to obtain the information of each subnet such as label, number of
31、 devices, names and addresses, etc. and thus generate and maintain a live forwarding routing table. Based on this table, each IP packet passing these routers will be assigned an optimal path according to the longest matching rules and be forwarded to the right path, if the path searching of the pack
32、et fails, this packet will be abandoned. ETSI ETSI ES 203 136 V1.2.1 (2017-10) 7 The router can connect two or more independent and flexible logical networks using different data packets method and media access method. Routers have not any requirements for hardware in each subnet but run the softwar
33、e using the same network layer protocol. In light of the router different application scenarios, they can be classified into core routers, service routers, broadband access routers, and aggregation routers (Core, Edge, access routers in ATIS 0600015.03.2009 1 classification). Routers have the follow
34、ing typical features: 1) Provide multiple protocols on network layer to connect different types of networks. 2) Provide multiple types of interfaces so as to realize the conversion between the packets with different encapsulations and transmission across different networks. 3) Support packet fragmen
35、tation and reassembly. 4) Provide large-scale packet buffers so as to support QoS and traffic engineering. 5) Provide large-scale routing tables and support large-scale Layer 3 services within intra-networks or inter-networks. 4.2 Switch Switches generally refer to equipment that exchange informatio
36、n in a communications system. They include Ethernet switches, ATM switches, FDDI switches, and token ring switches, Ethernet switch is widely used because of fast development of Ethernet technologies and its low costs, therefore, switches in the present document refer to Ethernet switches. Switches
37、are typical packet switching devices at the data link layer of OSI layer 2. Based on the destination data link layer addresses in the Layer 2 switching tables, each received packet, will be assigned an optimal path according to the accurate matching rule and be forwarded to the right path, if the pa
38、th searching of the packet fails, this packet will be sent to the broadcast domain to which it belongs. The Layer 2 switching table is generated by switch network self-learning. The main function of switches is packet switching at the data link layer, but with the development of network technologies
39、, the relationship between network hierarchy and hardware equipment has become ambiguous, it is not limited to Layer 2 services, the routing function is also integrated into most switches to support Layer 3 services, if the path searching of packets entering the switch fails in Layer 2, then it will
40、 be delivered to the routing module for path searching and forwarding in Layer 3. For example, some high-level switches also have the routing function, the little differences between switch and router lie in routing items and performance specifications. Switches have the following typical features:
41、1) Support data link layer protocols, such as 802.3, Ethernet II, etc. 2) Provide Ethernet optical and electrical interfaces with different data rates. 3) Packet buffers are not large and low requirements for QoS and traffic engineering are allowed. 4) Demand a large-scale Layer 2 switching table an
42、d low requirements for the Layer 3 routing table. 5 Definitions of the Equipment Energy Efficiency Ratio for Router and Switch Based on the routers and switches energy consumption measurements and research, it is showed that the main influencing factors of their energy consumption are the quantity o
43、f service boards configured, traffic configuration, traffic load and ambient conditions. These factors should be taken into account when defining the energy efficiency indicators. Therefore, Energy Efficiency Ratio of Equipment (EEER) is defined as the throughput forwarded by 1 watt, unit: Gbps/Watt
44、. A higher EEER corresponds to a better the energy efficiency. ETSI ETSI ES 203 136 V1.2.1 (2017-10) 8 Depending on the equipment type application or usage, one shall configure the product in Aggregation mode (uplink/downlink ports) as described in figure 1 or in Core mode (all ports to all ports) a
45、s described in figure 2. Figure 1: Aggregation mode functionality Aggregation mode: in this mode, a few (typically higher bandwidth) ports on the equipment are considered uplink ports; while majority (typically lower bandwidth) ports are considered user ports. In this configuration the data flow is
46、strictly from user ports to uplink ports and vice versa. User ports do not communicate with each other through this equipment. Figure 2: Core mode functionality Core mode: in this mode all ports are considered similar and have similar bandwidth. In this configuration the data flow is so that each po
47、rt communicates with one another. This is also called full mesh configuration. ETSI ETSI ES 203 136 V1.2.1 (2017-10) 9 For modular systems with 6 or more modules, it is allowed to permit a multi mesh configuration instead of a full mesh to facilitate the modular test method, provided that there is m
48、ore than one mesh with at least three modules per mesh. For EUT with 40 GBs speed ports or higher, it is permitted to use vertical “snake“/cascade topology except one port on each line card which should be used for mesh traffic. Use throughput numbers on meshed ports for total system throughput calc
49、ulation. Figure 3 EEER definition for: EEER=Ti/Pi Where: jmjjiTBT=1Table 1: Traffic load level and weight multipliers Traffic load level percentage of maximum load Weight factor Equipment type high medium Low B1 B2 B3 Core equipment 100 % 30 % 0 % 0,1 0,8 0,1 Edge/access 100 % 10 % 0 % 0,1 0,8 0,1 Bj: Weight multipliers for different traffic level, see table 1; the summation of B1to B3equal to 1. Ti: Total capacity of the interfaces for a fixed configuration model (the sum of interface bandwidth). Ti for a core functionality mode: Total weighted throughput is
