1、 ETSI TS 102 460 V1.2.1 (2015-12) Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia (BSM); Address Management at the SI-SAP TECHNICAL SPECIFICATION ETSI ETSI TS 102 460 V1.2.1 (2015-12)2 Reference RTS/SES-00354 Keywords broadband, interworking, IP, management, satellite ETSI
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7、I. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2015. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Mark
8、s of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 460 V1.2.1 (2015-12)3 Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Intr
9、oduction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 7g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 9g34 Scenarios and service requirements 11g34.0 Introduction 11g34.1 Address Management (AM) . 11g34.2 Address Management fun
10、ctions . 12g34.2.1 IP layer Address Management functions 12g34.2.2 BSM_IDs 13g34.2.3 Access network scenarios . 13g34.3 Service requirements 14g35 Unicast architecture requirements 14g35.1 General requirements . 14g35.2 Management of BSM_IDs in an NCC 15g35.3 Relating BSM_IDs to a BSM Network 15g35.
11、4 BSM Address Resolution (B-AR) 16g35.5 BSM Reverse Address Resolution (B-RAR) 18g35.6 BSM Dynamic ST Port Configuration (B-DSPC) 18g35.7 Network Address Translation (NAT) . 19g3Annex A (informative): Internet access scenarios . 21g3A.0 Overview 21g3A.1 Unicast access services . 21g3A.2 Routed IP ac
12、cess mode . 22g3A.2.1 Service architecture 22g3A.2.2 Service characteristics 22g3A.2.3 Service protocol stack 23g3A.2.4 Customer Premises configurations for Internet Access 23g3A.2.4.1 Multi-computers LAN with its own internal private IP addressing 23g3A.3 Bridged access mode 24g3A.3.1 Service chara
13、cteristics 24g3A.3.2 Service protocol stacks . 24g3A.3.3 Hub configuration. 25g3A.3.3.0 Introduction. 25g3A.3.3.1 PPP Terminated Aggregation (PTA) model . 25g3A.3.3.2 L2TP Access Aggregation (LAA) mode 25g3A.4 PPP router mode . 25g3A.5 DHCP router mode . 26g3A.5.1 Service presentation . 26g3A.5.2 Se
14、rvice characteristics 26g3A.5.3 Service protocol stacks . 26g3ETSI ETSI TS 102 460 V1.2.1 (2015-12)4 Annex B (informative): Address Management network topology . 28g3B.1 Address Management SI-SAP model . 28g3B.2 BSM network models . 29g3Annex C (informative): Example of a double NAT network topology
15、 31g3C.1 Double NAT network scenario . 31g3C.2 Premises network routing . 32g3C.2.0 Introduction 32g3C.2.1 Public Routable Networks 32g3C.2.2 Private Non-Routable Network 32g3C.3 Double NATing Requirements 32g3Annex D (informative): RSM-B IP routing 33g3D.1 RSM-B overview 33g3D.2 RSM-B routing . 34g
16、3D.3 IP routing and address resolution function . 34g3D.4 Default route . 36g3Annex E (normative): RSM-A Address Resolution 37g3E.1 Introduction 37g3E.1.0 AR functionalities. 37g3E.1.1 AR for customer networks 37g3E.1.1.1 AR at Terrestrial Interface for customer networks . 37g3E.1.1.2 AR at Satellit
17、e Interface for customer networks . 37g3E.1.1.3 Satellite ARP Description . 38g3E.2 State diagram 39g3E.3 Procedures 40g3Annex F (normative): Specification of SI-SAP AR Primitives 41g3F.1 C-Plane AR Primitives . 41g3F.2 Primitives . 41g3F.2.1 SI-C-AR_QUERY 41g3F.2.2 SI-C-AR_INFO 41g3F.3 Parameters 4
18、2g3F.3.1 AR query handle . 42g3F.3.2 AR info handle . 42g3F.3.3 AR info type . 42g3F.3.4 Network address . 42g3F.3.5 Network address type . 42g3F.3.6 Status 43g3F.3.7 BSM_ID . 43g3F.3.8 BSM multicast flag . 43g3Annex G (informative): Examples of AR function usage 44g3G.1 Suggestion for data stored i
19、n AR caches 44g3G.2 SI-C-AR_INFO Function . 44g3G.3 SI-C-AR_QUERY 45g3History 46g3ETSI ETSI TS 102 460 V1.2.1 (2015-12)5 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if
20、 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, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are availabl
21、e on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be 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
22、may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Satellite Earth Stations and Systems (SES). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need no
23、t“, “will“, “will not“, “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 de
24、fines scenarios and architectures to provide address management functions for a BSM network. ETSI ETSI TS 102 460 V1.2.1 (2015-12)6 1 Scope The present document concerns the address management functions that are required to support interworking of a BSM network with an IP network, including use as p
25、art of the general Internet, in particular the address management functions related to the BSM SI-SAP. The SI-SAP is described in the BSM functional architecture 1 and defined in the SI-SAP specification 3. A key element in the present document is the BSM_Identifier (BSM_ID) which is the SI-SAP addr
26、ess that identifies a BSM subnetwork point of attachment (SNPA). A BSM network uses the BSM_ID when sending and receiving data via the SI-SAP: the BSM_ID is an abstraction of the lower layer address that would otherwise be used. The present document describes the relationships between IP Addresses a
27、nd BSM_IDs and also describes how to create, manage, and query the BSM_IDs for the purpose of sending and receiving user data (in particular IP packets) via the SI-SAP. NOTE 1: In some systems, requesting to pass traffic across the network also causes reservation of bandwidth. This is to be consider
28、ed out of scope of the present recommendation, but assumptions that a notification (e.g., bandwidth allocation) will be sent by a QoS Manager will be made. The present document divides into two parts: address management scenarios and architectures; unicast address resolution at the SI-SAP. Lower lay
29、er address management (i.e. management of addresses below the SI-SAP) is beyond the scope of the present document. NOTE 2: Examples of lower layer addresses that are out-of-scope include Data Link layer addresses, MAC layer addresses and Physical layer addresses. The present document elaborates the
30、details of the address management functions, notably the address resolution function, as defined in the SI-SAP specification ETSI TS 102 357 3. It also builds on several other reports: ETSI TR 101 984 i.1; ETSI TR 101 985 i.2; ETSI TR 102 155 i.7. 2 References 2.1 Normative references References are
31、 either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents wh
32、ich are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are nece
33、ssary for the application of the present document. 1 ETSI TS 102 292: “Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia (BSM) services and architectures; Functional architecture for IP interworking with BSM networks“. ETSI ETSI TS 102 460 V1.2.1 (2015-12)7 2 IEEE 802(2001):
34、 “IEEE Standard for Local and Metropolitan Area Networks: Overview and Architecture“. NOTE: Available at https:/standards.ieee.org/about/get/802/802.html. 3 ETSI TS 102 357 (V1.1.1): “Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia (BSM); Common Air interface specification
35、; Satellite Independent Service Access Point SI-SAP“. 2.2 Informative 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 applies. For non-specific references, the lates
36、t version of the reference document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present do
37、cument but they assist the user with regard to a particular subject area. i.1 ETSI TR 101 984: “Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia (BSM); Services and architectures“. i.2 ETSI TR 101 985: “Satellite Earth Stations and Systems (SES); Broadband Satellite Multime
38、dia; IP over Satellite“. i.3 ETSI TS 102 295: “Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia (BSM) services and architectures; BSM Traffic Classes“. i.4 ETSI TR 102 353: “Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia (BSM); Guidelines for the
39、 Satellite Independent Service Access Point (SI-SAP)“. i.5 IETF RFC 1112: “Host extensions for IP Multicasting“. i.6 ETSI TR 102 157: “Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia; IP Interworking over satellite; Performance, Availability and Quality of Service“. i.7 ET
40、SI TR 102 155: “Satellite Earth Stations and Systems (SES); Broadband Satellite Multimedia; IP interworking over satellite; Addressing and routing“. i.8 IETF RFC 3022: “Traditional IP Network Address Translator (Traditional NAT)“. i.9 IETF RFC 826: “An Ethernet Address Resolution Protocol: or conver
41、ting network protocol addresses to 48.bit Ethernet address for transmission on Ethernet hardware“. i.10 IETF RFC 2131: “Dynamic Host Configuration Protocol“. i.11 IETF RFC 3046: “DHCP Relay Agent Information Option“. i.12 IETF RFC 4861: “Neighbor Discovery for IP version 6 (IPv6)“. 3 Definitions and
42、 abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: Address Resolution (AR): provides a mechanism that associates L2 information with the IP address of a system NOTE: Many L2 technologies employ unicast AR at the sender: an IP system wi
43、shing to send an IP packet encapsulates it and places it into a L2 frame. It then identifies the appropriate L3 adjacency (e.g. next hop router, end host) and determines the appropriate L2 adjacency (e.g. MAC address in Ethernet) to which the frame should be sent so that the packet gets across the L
44、2 link. ETSI ETSI TS 102 460 V1.2.1 (2015-12)8 Address Resolution Protocol (ARP): protocol defined in IETF RFC 826 i.9 that is used to associate network protocol addresses to 48 bit Ethernet addresses for transmission on Ethernet hardware BSM Address Resolution (B-AR): provides a mechanism that asso
45、ciates a BSM_ID with the IP address of a system BSM Bearer service: transport service from one SI-SAP to one other SI-SAP (unicast service); or from one SI-SAP to one or more SI-SAPs (multicast service); within the same BSM subnetwork BSM Subnetwork: infrastructure that provides transport services b
46、etween STs NOTE: The boundary of the BSM subnetwork corresponds to the SI-SAP in those STs; hence the BSM subnetwork includes elements of the STs, the Gateways and the Satellite. BSM Network: one BSM subnetwork together with the necessary interworking functions that enable that BSM subnetwork to int
47、erwork with one or more attached networks at the STs BSM_Identity (BSM_ID): SI-SAP address that defines the BSM Subnetwork Point of Attachment (SNPA) NOTE: The BSM_ID is divided into BSM Unicast IDs (BSM_UID) and BSM Group IDs (BSM_GID). BSM Subnetwork Point of Attachment (B-SNPA): SI-SAP endpoint o
48、f the BSM data transport services NOTE: The BSM_ID is used to address data sent to and received from the BSM Subnetwork Point of Attachment. dynamically assignable: may be reassigned during normal operations dynamically assigned: assigned at a well-defined point in an operation, such as at log-in fo
49、rwarding: process of relaying an IP Packet from a source to a destination through intermediate network segments and nodes NOTE: The forwarding decision is based on information that is already available in the routing table. The decision on how to construct that routing table is the routing decision - see below. IP datagram (datagram): self-contained, independent entity of data that conforms to the IP protocol IP Packet (Packet): IP packet is identical to an IP datagram NOTE: An IP packet contains sufficient information
