1、 International Telecommunication Union ITU-T H.248.61TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2013) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMSInfrastructure of audiovisual services Communication procedures Gateway control protocol: Packages for network level ITU-T H.248 statistics Recom
2、mendation ITU-T H.248.61 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.229 Systems aspects H.230H.239 Communicatio
3、n procedures H.240H.259Coding of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of service architecture for audiovisual and multim
4、edia services H.360H.369 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H.510H.519 Mobile multimedia collaboration ap
5、plications and services H.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559 Mobile multimedia collaboration inter-working procedures H.560H.569 BROADBAN
6、D, TRIPLE-PLAY AND ADVANCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 Ubiquitous sensor network applications and Internet of Things H.640H.649 IPTV MULTIMEDIA SERVICES AND APPLICATIONS FOR IPTV General aspects H.70
7、0H.719 IPTV terminal devices H.720H.729 IPTV middleware H.730H.739 IPTV application event handling H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 Digital Signage H.780H.789 For further details, please refer to
8、 the list of ITU-T Recommendations. Rec. ITU-T H.248.61 (03/2013) i Recommendation ITU-T H.248.61 Gateway control protocol: Packages for network level ITU-T H.248 statistics Summary Recommendation ITU-T H.248.61 defines ITU-T H.248 packages for network level statistics for the Internet Protocol. The
9、 IP layer octets count statistics package is used to support explicit octet count statistics on the Internet Protocol layer. The IP layer packets count statistics package is used to support explicit packet count statistics on the Internet Protocol layer. The IP traffic flow of an IP-based ITU-T H.24
10、8 stream or termination may be either IPv4 or IPv6. This revision incorporates a clarification that the flow identifier is not limited to TCP/UDP. History Edition Recommendation Approval Study Group 1.0 ITU-T H.248.61 2009-03-16 16 2.0 ITU-T H.248.61 2013-03-16 16 ii Rec. ITU-T H.248.61 (03/2013) FO
11、REWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studyi
12、ng technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups
13、 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 areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO
14、 and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions
15、 (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such w
16、ords does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position c
17、oncerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected b
18、y patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2013 All rights reserved. No part of this
19、 publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.248.61 (03/2013) iii Table of Contents Page 1 Scope 1 1.1 Introduction to areas with usage of ITU-T H.248 statistics . 1 1.2 Scope of ITU-T H.248 statistics defined by this Recommendati
20、on . 1 2 References. 2 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 4 6 IP Layer Octets Count Statistics Package . 4 6.1 Properties 4 6.2 Events . 4 6.3 Signals 4 6.4 Statistics 4 6.5 Error codes 5 6.6 Procedu
21、res 5 7 IP Layer Packets Count Statistics Package . 5 7.1 Properties 6 7.2 Events . 6 7.3 Signals 6 7.4 Statistics 6 7.5 Error codes 6 7.6 Procedures 7 Appendix I Relation between “IP flow“ and “IP layer H.248 Statistic“ . 8 I.1 Model (for packet-to-Context delivery) . 8 I.2 Correlation between ITU-
22、T H.248 Stream Identifier and IP Flow Identifier . 9 I.3 The general Context delivery process for incoming IP packets . 12 I.4 Context level IP packet processing: relation of ITU-T H.248.61 and other ITU-T H.248.x-series technologies concerning IP-related functions . 13 I.5 Special IP bearer traffic
23、 14 Appendix II Lookup-key structures 16 II.1 Lookup-keys based on fully specified SDP 16 II.2 Lookup-keys based on wildcarded SDP . 18 Bibliography. 21 Rec. ITU-T H.248.61 (03/2013) 1 Recommendation ITU-T H.248.61 Gateway control protocol: Packages for network level ITU-T H.248 statistics 1 Scope 1
24、.1 Introduction to areas with usage of ITU-T H.248 statistics ITU-T H.248 statistics are defined and used for different purposes. There are four major categories identified, see clause 1.1 of ITU-T H.248.58. 1.2 Scope of ITU-T H.248 statistics defined by this Recommendation The scope of this Recomme
25、ndation is related to ITU-T H.248 statistics defined, in particular, for measurements on the network protocol layer. A potential application is the validation of network capacity allocations. Figure 1 illustrates the different scopes of several packages with octets count statistics on different prot
26、ocol layers. The IP layer octets count statistics package provides statistics on Internet Protocol (IP) layer. H.248.61(13)_F01Application level framing protocolRTP, UDPTL, L3: IPL2L4: UDP, TCP, L1e.g., audio codecTransport protocolNetwork protocolApplication dataPrincipal protocol stack forITU-T H.
27、248 IP terminationsTransport overheadbcdaertpadnt andrtpipocsScope of thisRecommendationReported traffic volumeFigure 1 Semantics of the ipocs package versus rtpad package and nt and rtp packages The ipocs package provides complementary statistics with regard to other packages for octets count measu
28、rement of different protocol layers. 2 Rec. ITU-T H.248.61 (03/2013) 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were v
29、alid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendatio
30、ns is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T H.248.1 Recommendation ITU-T H.248.1 (2013), Gateway control protocol: Version 3. ITU-T H.248.43 Recommendation ITU-T H.248.43 (2008),
31、Gateway control protocol: Packages for gate management and gate control. ITU-T H.248.53 Recommendation ITU-T H.248.53 (2009), Gateway control protocol: Traffic management packages. ITU-T H.248.58 Recommendation ITU-T H.248.58 (2008), Gateway control protocol: Packages for application level H.248 sta
32、tistics. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 flow (see clause 3.3 of b-ITU-T Y.2121): A unidirectional sequence of packets with the property that, along any given network link, a flow identifier has the same value for every
33、packet. 3.1.2 flow identifier (see clause 3.6 of b-ITU-T Y.2121): A vector (or n-tuple) comprising the values of a number of elements taken from the IP, TCP/UDP header fields, encapsulation header, and label fields attached to a packet. The flow identifier for a flow within a single IP network is un
34、ique. NOTE The header fields values are not limited to TCP/UDP other layer 4 protocols may also be used. 3.1.3 measurement point (see clause 3.9 of b-ITU-T M.2301): The physical or logical point at which measurements can be made and to which the data obtained is related. 3.1.4 IP bearer (see clause
35、3.1 of b-ITU-T Q.1970): A bidirectional user plane association between two BIWFs for carrying media stream information across IP networks. An IP bearer is an instance of a backbone network connection (BNC) type defined in clause 3 of b-ITU-T Q.1902.1. 3.2 Terms defined in this Recommendation This Re
36、commendation defines the following term: 3.2.1 lookup-key: Flow identifier element that can be used for packet classification with regard to ITU-T H.248 Context delivery. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: QoS Codepoint for QoS B2BIH Back-
37、to-Back IP Host (mode) BIWF Bearer Interworking Function BNC Backbone Network Connection Rec. ITU-T H.248.61 (03/2013) 3 CDIB Context Delivery Information Base DA (L2 or L3) Destination Address DP (L2 or L3) Destination Port FlowID Flow Identifier (in general) or IPv6 Flow Label (in case of L3-FlowI
38、D) GRE Generic Routing Encapsulation ICMP Internet Control Message Protocol IGMP Internet Group Management Protocol IP Internet Protocol IPR IP Router (mode) L2VPN Layer 2 Virtual Private Network LCD (ITU-T H.248) LocalControl Descriptor LD (ITU-T H.248) Local Descriptor LSP (MPLS) Label Switched Pa
39、th Lx Protocol Layer x MD (ITU-T H.248) Media Descriptor MG Media Gateway MGC Media Gateway Controller MP Measurement Point MPLS MultiProtocol Label Switching NAT Network Address Translation nt Network Package ID OSPF Open Shortest Path First (routing protocol) PDU Protocol Data Unit PROT (Upper Lay
40、er) Protocol PT (RTP) Payload Type; (RTCP) Packet Type RD (ITU-T H.248) Remote Descriptor; Remote Destination (IP connection endpoint) RS Remote Source (IP connection endpoint) RTCP RTP Control Protocol RTP Real-time Transport Protocol rtp RTP Package ID rtpad RTP Application Data Package SA (L2 or
41、L3) Source Address SD (ITU-T H.248) Stream Descriptor SDP Session Description Protocol SP (L2 or L3) Source Port SSRC (RTP) Synchronization Source TCP Transmission Control Protocol 4 Rec. ITU-T H.248.61 (03/2013) UDP User Datagram Protocol UDPTL (Facsimile) UDP Transport Layer Protocol VERS (L3, IP)
42、 Version VPNID Virtual Private Network Identifier 5 Conventions None. 6 IP Layer Octets Count Statistics Package Package name: IP Layer Octets Count Statistics Package Package ID: ipocs (0x00d0) Description: This package is used to support explicit octet count statistics on the Internet Protocol lay
43、er. Version: 1 Extends: None. 6.1 Properties None. 6.2 Events None. 6.3 Signals None. 6.4 Statistics 6.4.1 IP Octets Sent Statistic name: IP Octets Sent Statistic ID: ipos (0x0001) Description: Provides the number of octets sent from the termination or stream since the termination or stream has exis
44、ted and the statistic has been set. The octets represent the egress IP protocol data units (PDU) of all IP flows of an ITU-T H.248 Stream. At the termination level, it is equal to the sum of the egress IP flows over all streams. Type: Double Possible values: Any 64-bit integer 0 and up Level: Either
45、 6.4.2 IP Octets Received Statistic name: IP Octets Received Statistic ID: ipor (0x0002) Rec. ITU-T H.248.61 (03/2013) 5 Type: Double Description: Provides the number of octets received on the termination or stream since the termination or stream has existed and the statistic has been set. The octet
46、s represent the ingress IP protocol data units (PDU) of all IP flows of an ITU-T H.248 Stream. At the termination level, it is equal to the sum of the ingress IP flows over all streams. Possible values: Any 64-bit integer 0 and up Level: Either 6.5 Error codes None. 6.6 Procedures 6.6.1 Semantic in
47、detail 6.6.1.1 Ingress IP traffic Statistic “IP Octets Received“ Every incoming IP packet successfully delivered to its ITU-T H.248 Context and ITU-T H.248 IP stream/termination is counted. The measurement represents the volume of all IP flows of an ITU-T H.248 Stream. The IP flow identifier is give
48、n by the ITU-T H.248 Stream Descriptor (see also Appendix I). 6.6.1.2 Egress IP traffic Statistic “IP Octets Sent“ The measurement represents the volume of all IP flows of an ITU-T H.248 Stream. The IP flow identifier is given by the ITU-T H.248 Stream Descriptor (see also Appendix I). 6.6.2 IP vers
49、ions The statistics may be applied for any IP version. 6.6.3 Measurements when policing is enabled (possible policing-measuring interactions) 6.6.3.1 IP address policing ITU-T H.248.43 The semantic is clarified in clause 6 of ITU-T H.248.43: the location of the measurement point (MP) defined by this Recommendation for IP ingress Statistics is before any ITU-T H.248.43 defined Context level filters. The traffic is thus measured before entering the Stream-assigned filter unit(s). 6.6.3.2 IP byterate poli
