ETSI TS 103 443-3 V1.1.1 (2016-08)

Integrated broadband cable telecommunication networks (CABLE); IPv6 Transition Technology Engineering and Operational Aspects; Part 3: DS-Lite

DTS/CABLE-00018-3

General Information

• Status: Published
• Publication Date: 30-Aug-2016
• Technical Committee: CABLE WG4 - Network, Fault, Monitoring and Performance Management and Test & Measu
• Current Stage: 12 - Completion
• Due Date: 01-Sep-2016
• Completion Date: 31-Aug-2016

Standards Content (Sample)

ETSI TS 103 443-3 V1.1.1 (2016-08)






TECHNICAL SPECIFICATION
Integrated broadband cable
telecommunication networks (CABLE);
IPv6 Transition Technology Engineering and
Operational Aspects;
Part 3: DS-Lite

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2 ETSI TS 103 443-3 V1.1.1 (2016-08)



Reference
DTS/CABLE-00018-3
Keywords
cable, HFC, IPv6

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3 ETSI TS 103 443-3 V1.1.1 (2016-08)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
Introduction . 6
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 11
3 Definitions and abbreviations . 11
3.1 Definitions . 11
3.2 Abbreviations . 11
4 Considerations . 14
4.1 Background . 14
4.2 General Overview. 14
5 Gap Analysis . 15
6 Domain Functionality . 16
6.1 End to End Network Domains . 16
6.2 DS-Lite Domain Topologies . 17
6.3 CPE Home Network Domain . 19
6.4 Access Network Domain . 20
6.5 Core Network Domain . 20
6.6 Data Centre Network Domain . 21
6.7 DMZ Service Domain . 21
6.8 Transit and Peering Service Domain . 21
6.9 Management and Monitoring Domain . 21
6.9.1 General Considerations . 21
6.9.2 OSS . 21
6.9.3 B4 Remote Management . 22
6.9.4 IPv4 Connectivity Checks . 22
6.9.5 B4 Provisioning . 22
6.9.6 AFTR Provisioning . 22
6.10 Security Domain . 23
7 Engineering Requirements . 23
7.1 Key Requirements . 23
7.1.1 AFTR . 23
7.1.2 CPE Cable Gateway Device . 23
7.2 DS-Lite Technology Feature Requirements . 24
7.3 Detailed AFTR Engineering Requirements . 28
7.3.1 AFTR Hardware Feature/Topology . 28
7.3.1.1 Role/Location . 28
7.3.1.2 Type . 28
7.3.1.3 Memory . 28
7.3.1.4 Integrated forwarding and AFTR function . 28
7.3.1.5 Forwarding Architecture . 28
7.3.2 AFTR DS-Lite specific engineering requirements . 29
7.3.2.1 Tunnel Identifiers/Client-Customer ID . 29
7.3.2.2 MTU Sizing/TCP MSS . 29
7.3.2.3 Load balancing . 29
7.3.2.4 IPv4 Private Subnet Segmentation . 29
7.3.2.5 Non-ALG Deployment . 29
7.3.2.6 Traffic Prioritization. 29
7.3.2.7 Data retention (DR) . 29
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4 ETSI TS 103 443-3 V1.1.1 (2016-08)
7.3.2.8 UPnP/Port forwarding/PCP . 29
7.3.3 AFTR General software engineering requirements . 30
7.3.3.1 Topology dependency . 30
7.3.3.2 Integrated topology engineering requirements . 30
7.3.3.3 Hairpin topology engineering requirements . 31
7.3.4 Scalability . 33
7.3.5 AFTR Performance . 33
7.3.5.1 General considerations . 33
7.3.5.2 Throughput interfaces . 33
7.3.5.3 Node latency . 33
7.3.5.4 Flow throughput . 33
7.3.5.5 Convergence. 33
7.3.6 AFTR Application proxy . 33
8 General Considerations . 35
8.1 Hardware Considerations . 35
8.2 DS-Lite Scalability . 35
8.3 PCP Considerations . 36
8.4 NDP Considerations . 36
9 Support Systems . 36
9.1 Testing . 36
10 CPE Specifications for IPv6 . 38
10.1 Summary . 38
10.1.1 Reference Architecture . 38
10.1.2 CPE Requirements . 39
10.1.2.1 General . 39
10.1.2.2 Cable Modem . 39
10.1.2.2.1 DOCSIS 2.0 + IPv6 Cable Modem. 39
10.1.2.2.2 DOCSIS 3.0 Cable Modem . 39
10.1.2.3 eRouter/Home Gateway . 40
10.1.2.4 LAN-side Interface. 40
10.1.2.5 Software Features . 40
10.1.2.5.1 Static Configuration . 40
10.1.2.5.2 Tunnel Bindings . 40
10.1.2.5.3 P2P . 41
10.1.2.5.4 Gi-DS-Lite . 41
10.1.2.5.5 Tunnel Identifiers/Client-Customer ID (flow label identifier) . 41
10.1.2.5.6 MTU Sizing/TCP MSS . 41
10.1.2.5.7 Non-ALG Deployment . 41
10.1.2.5.8 DNS over IPv6 . 41
10.1.2.5.9 Port Forwarding . 41
10.1.2.5.10 SI . 41
10.1.2.5.11 DHCPv4 Internal . 41
10.1.2.5.12 DHCPv6 - PD Internal and external . 41
10.1.2.5.13 Non-ALG Deployment . 42
10.1.2.5.14 Customer Management (Access and Reporting) . 42
10.1.2.5.15 Cable Operators Corporate Management (IPv6 or IPv4) . 42
10.1.2.5.16 Port Forwarding . 42
10.1.2.5.17 UPnP . 42
10.1.2.5.18 Firewall . 42
10.1.2.5.19 Standard Hardware and Software Features for the CPE . 42
10.1.2.6 Performance . 43
10.1.2.6.1 Forwarding . 43
10.1.2.6.2 Node latency . 43
10.1.2.6.3 Max ses sions . 43
10.1.2.7 DS-Lite . 43
10.1.2.7.1 General . 43
10.1.2.7.2 WAN requirements: . 43
10.1.2.7.3 Security Considerations . 44
10.1.2.7.4 Security requirements: . 44
10.2 DHCP . 44
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5 ETSI TS 103 443-3 V1.1.1 (2016-08)
10.2.1 DHCPv6 - PD Internal and external . 44
10.3 DNS over IPv6 . 44
10.4 Client Reactivity . 44
10.5 Monitoring and Logging . 44
10.6 Resource Management . 45
10.7 Placement of function on LSN or CPE . 45
10.8 Security . 47
10.8.1 SNMP . 47
10.8.1.1 SNMP Management . 47
History . 48


ETSI

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6 ETSI TS 103 443-3 V1.1.1 (2016-08)
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 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 available on the ETSI Web
server (https://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 may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee TC CABLE.
The present document is part 3 of a multi-part deliverable. Full details of the entire series can be found in part 1 [34].
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "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
Considering the depletion of IPv4 addresses, transition to IPv6 is required in order to enable continued growth of the
customer base connected to cable networks and ensure service continuity for existing and new customers. High-quality
connectivity to all kinds of IP-based services and networks is essential in today's business and private life.
The present document accommodates an urgent need in the industry to implement and integrate the IPv6 transition
technologies as specified by ETSI TS 101 569-1 [1] into their cable networks. The choice of the technology
implemented depends on factors such as the business needs, current deployed architectures and plans for cost
effectively transition from IPv4 to IPv6.
Current global IPv4 address space was projected to be depleted around the middle of 2012; depletion for the operator
was estimated around end 2012. As part of the resulting roll-out of IPv6 in the operator's network, specific measures
had to be taken to allow a smooth transition and coexistence between IPv4 and IPv6. ETSI developed requirements to
address transition from IPv4 to IPv6 specifying six transition technologies as given by ETSI TS 101 569-1 [1] that were
at the time considered to be the most appropriate to assist cable operators to transition there cable networks to IPv6.
Since then the industry has acquired more experience with the technology options settling in the main for DS-Lite
across the cable network market and NAT64 IPv6 transition technologies across the mobile market.
The objective of the present document is to define the operational and engineering requirements to enable engineers to
implement a seamless transition of the cable networks to IPv6 with the application of the DS-Lite transition technology.
The present document is the final part of a companion of ETSI standards developed in 4 phases to provide the cable
sector in particular cable operators engineering and operational staff a standardized approach when integrating one of
the five IPv6 transition technologies, NAT64, DS-Lite, 464XLAT, 6RD and MAP-E.
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7 ETSI TS 103 443-3 V1.1.1 (2016-08)
The first phase assessed the different IPv6 transition technology options being defined by industry with
recommendation for the most appropriate with consideration of current network architectures, ensuring adequate scale
and a cost effective transition approach from IPv4 to IPv6 as the IPv4 addresses deplete. The objective being to
examine the pros and cons of the IPv6 transition technologies and recommend the most cost effective solution that
would enable the cable operators to minimize the cost of upgrades to their existing network plant whilst maintain
continuity of services to their present and new added customers. The details of the study are given by ETSI
TR 101 569 [i.5].
In the second phase an ETSI technical specification was developed to specify technical requirements for six transition
technologies that industry were considering for use by Cable Operators depending on the current state of their deployed
cable network architecture, service model requirements and their IPv6 transition strategy as the IPv4 addresses depleted.
These six IPv6 transition technologies are specified by ETSI TS 101 569-1 [1], covering NAT64, DS-Lite, 6RD,
NAT44, 464XLAT and MAP-E.
In the third phase ETSI developed a series of conformance test specifications to enable the compliance verification of
the five IPv6 transition technologies, NAT64, DS-Lite, 464XLAT, 6RD and MAP-E that were specified during phase 2
standardization. The conformance tests are developed against the requirements given by the ETSI TS 101 569-1 [1].
The series of conformance tests developed for each of the four transition technologies, are as given by ETSI TS 103 238
parts 1 [2] to 3 [4] respectively for NAT64; ETSI TS 103 239 parts 1 [5] to 3 [7] respectively for MAP-E; ETSI TS 103
241 parts 1 [8] to 3 [10] respectively for DS-Lite; ETSI TS 103 242 parts 1 [11] to 3 [13] respectively for XLAT and
ETSI TS 103 243 parts 1 [14] to 3 [16] respectively for 6RD.
Phase 4 is the present project phase for development of technical specifications covering the operational and
engineering requirements with the present document being part 3 of a multi-part series covering the IPv6 transition
technology DS-Lite.
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DOCSIS is a registered Trade Mark of Cable Television Laboratories, Inc., and is used in the present document with
permission.


ETSI

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8 ETSI TS 103 443-3 V1.1.1 (2016-08)
1 Scope
The present document presents the engineering and operational requirements for the application of the IPv6 transition
technology DS-Lite as defined by ETSI TS 101 569-1 [1] (IPv6 Transition Requirements) implemented within an
integrated broadband cable network end to end across its network domains.
The present document is part 3 of a multi-part series and presents the operational aspects of the IPv6 transition
technology DS-Lite across the cable network domains.
Only those elements of the network that have to be engineered to operate the IPv6 transition technology DS-Lite are
presented. Descriptions and interface details of network elements that do not change are already addressed by the
relevant equipment cable standards and therefore this information is not included in the present document.
The conformity of the DS-Lite implementation is relevant when assessing its implementation and operational
requirements across the cable network to ensure the implementation is correctly engineered to conform to the
requirements of the base standard ETSI TS 101 569-1 [1]. These conformance tests are not specified in the present
document as they are already specified by ETSI TS 103 241 parts 1 to 3 [8], [9] and [10].
The operational aspects for the IPv6 transition technology DS-Lite are considered when engineered end to end across
the cable network domains:
• CPE Home Networking Domain
• Access Network Domain
• Core Network Domain
• Data Center Domain
• DMZ Service Domain
• Transit and Peering Domain
• Management and Monitoring Domain
• Security Domain
The present document specifies
...