Technical requirements for automatically switched optical network - Part 3: Data communication network
1 Scope
This part of GB/T 21645 specifies the architecture and functions of data communication network for automatically switched optical network (ASON), mainly including data communication network (DCN) application, general requirements for ASON DCN, requirements for management communication network (MCN), requirements for signalling communication network (SCN), DCN functional architecture and requirements as well as DCN network performance.
This part is applicable to synchronous digital hierarchy (SDH) transport network defined in ITU-T G.803 and optical transport network (OTN) defined in ITU-T G.872. It may also be used as reference for DCN applications in other communication networks.
2 Normative references
The following documents contain provisions which, through reference in this part of GB/T 21645, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
ISO/IEC 9577 Information technology - Protocol identification in the network layer
ISO/IEC 10589 Information technology - Telecommunications and information exchange between systems - Intermediate system to intermediate system intra-domain routeing information exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service (ISO 8473)
ITU-T G.783 Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
ITU-T G.784 Synchronous digital hierarchy (SDH) management
ITU-T G.798 Characteristics of optical transport network hierarchy equipment functional blocks
ITU-T G.803 Architecture of transport network based on the synchronous digital hierarchy (SDH)
ITU-TG.872 Architecture of optical transport networks
ITU-T G.874 Management aspects of the optical transport network element
ITU-T G.7712 Architecture and specification of data communication network
ITU-T G.8080 Architecture for the automatically switched optical networks (ASON)
ITU-T M.3010 Principles for a telecommunications management network
ITU-TM.3013 Considerations for a telecommunications management network
ITU-T M.3016 TMN security overview
ITU-T Q.811 Lower layer protocol profiles for the Q3 and X interfaces
ITU-T X.263 Information technology - Protocol identification in the network layer
ITU-T Y.1720 Protection switching for MPLS networks
IEEE 802.3 Ethernet LAN protocol
IETF RFC 791 Internet protocol
IETF RFC 826 Ethernet address resolution protocol or converting network protocol addresses to 48.bit Ethernet address for transmission on Ethernet hardware
IETF RFC 894 A standard for the transmission of IP datagrams over Ethernet networks
IETF RFC 1122 Requirements for Internet hosts - Communication layers
IETF RFC 1195 Use of OSI IS-IS for routing in TCP/IP and dual environments
IETF RFC 1332 The PPP Internet protocol control protocol (IPCP)
IETF RFC 1377 The PPP OSI network layer control protocol (OSINLCP)
IETF RFC 1661 The point-to-point protocol (PPP)
IETF RFC 1662 PPP in HDLC-like framing
IETF RFC 1812 Requirements for IP version 4 routers
IETF RFC 2460 Internet protocol, version 6 (IPv6) specification
IETF RFC 2472 IPv6 over PPP
IETF RFC 2784 Generic routing encapsulation (GRE)
IETF RFC 2961 RSVP Refresh overhead reduction extensions
IETF RFC 3031 Multiprotocol label switching architecture
IETF RFC 3032 MPLS label stack encoding
IETF RFC 3147 Generic routing encapsulation over CLNS networks
IETF RFC 3209 RSVP-TE: Extensions to RSVP for LSP tunnels
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this part, the following terms and definitions apply.
3.1.1
DCN
a network that supports Layer 1 (physical layer), Layer 2 (data-link layer), and Layer 3 (network layer) functions. A DCN can be designed to support transport of distributed management communications related to the TMN, distributed signalling communications related to the ASON, and other communications (e.g., orderwire/voice communications, software downloads, etc.)
3.1.2
ECC
ECC providing a logical operations channel between NEs. The physical channel supporting the ECC is technology specific. Examples of physical channels supporting the ECC are: a DCC channel within SDH, GCC channel within OTN OTUk/ODUk, or the COMMS OH channel within the OTNOOS
3.1.3
IP routing interworking function
a function allowing IP topology or routes to be passed from one IP routing protocol to a different incompatible IP routing protocol. For example, an IP routing interworking function may form a gateway between an integrated IS-IS routed DCN and an OSPF routed DCN
3.1.4
network layer interworking function
a function providing interoperability between nodes that support incompatible network layer protocols, such as static GRE tunnels, or an AE-DCF
3.1.5
AE-DCF
a function automatically encapsulating packets when necessary so that they may be routed by NEs that would otherwise be unable to forward them. An AE-DCF also features a matching de-encapsulation function to restore the packet back to its original form once it has traversed incompatible NEs
Foreword i
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviations
4 DCN application
4.1 General application
4.2 ASON application
4.3 Division of applications
5 General requirements for ASON DCN
5.1 ASON DCN transport mode
5.2 DCN protocol encapsulation
5.3 DCN protocol interworking
6 Requirements for management communication network (MCN)
6.1 MCN architecture
6.2 Reliability of MCN
6.3 Security of MCN
6.4 MCN data communication functions (DCF)
7 Requirements for signalling communication network (SCN)
7.1 SCN architecture
7.2 General requirements for SCN
7.3 Reliability of SCN
7.4 Security of SCN
7.5 SCN data communication functions (DCF)
8 DCN functional architecture and requirements
8.1 DCN functional architecture
8.2 ECC access function
8.3 ECC data-link layer termination function
8.4 "Network layer PDU into ECC data-link frame" encapsulation function
8.5 Ethernet LAN physical termination function
8.6 "Network layer PDU into Ethernet frame" encapsulation function
8.7 Network layer PDU forwarding function
8.8 Network layer PDU interworking function
8.9 Network layer PDU encapsulation function
8.10 Network layer tunnelling function
8.11 Network layer routing function
8.12 IP routing interworking function
8.13 "Applications to network layer" mapping function
8.14 "MPLS PDU into ECC data-link layer" encapsulation function
8.15 "MPLS PDU into Ethernet frame" encapsulation function
8.16 MPLS LSP signalling function
8.17 MPLS LSP forwarding function
8.18 MPLS LSP path computation function
8.19 "Network layer packet into MPLS" encapsulation function
8.20 MPLS protection function
8.21 Message priority (optional)
9 DCN network performance
9.1 Basic requirements
9.2 Network performance parameters
Standard
GB/T 21645.3-2009 Technical requirements for automatically switched optical network—Part 3:Data communication network (English Version)
Standard No.
GB/T 21645.3-2009
Status
valid
Language
English
File Format
PDF
Word Count
15000 words
Price(USD)
450.0
Implemented on
2009-12-1
Delivery
via email in 1 business day
Detail of GB/T 21645.3-2009
Standard No.
GB/T 21645.3-2009
English Name
Technical requirements for automatically switched optical network—Part 3:Data communication network
Technical requirements for automatically switched optical network - Part 3: Data communication network
1 Scope
This part of GB/T 21645 specifies the architecture and functions of data communication network for automatically switched optical network (ASON), mainly including data communication network (DCN) application, general requirements for ASON DCN, requirements for management communication network (MCN), requirements for signalling communication network (SCN), DCN functional architecture and requirements as well as DCN network performance.
This part is applicable to synchronous digital hierarchy (SDH) transport network defined in ITU-T G.803 and optical transport network (OTN) defined in ITU-T G.872. It may also be used as reference for DCN applications in other communication networks.
2 Normative references
The following documents contain provisions which, through reference in this part of GB/T 21645, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
ISO/IEC 9577 Information technology - Protocol identification in the network layer
ISO/IEC 10589 Information technology - Telecommunications and information exchange between systems - Intermediate system to intermediate system intra-domain routeing information exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service (ISO 8473)
ITU-T G.783 Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks
ITU-T G.784 Synchronous digital hierarchy (SDH) management
ITU-T G.798 Characteristics of optical transport network hierarchy equipment functional blocks
ITU-T G.803 Architecture of transport network based on the synchronous digital hierarchy (SDH)
ITU-TG.872 Architecture of optical transport networks
ITU-T G.874 Management aspects of the optical transport network element
ITU-T G.7712 Architecture and specification of data communication network
ITU-T G.8080 Architecture for the automatically switched optical networks (ASON)
ITU-T M.3010 Principles for a telecommunications management network
ITU-TM.3013 Considerations for a telecommunications management network
ITU-T M.3016 TMN security overview
ITU-T Q.811 Lower layer protocol profiles for the Q3 and X interfaces
ITU-T X.263 Information technology - Protocol identification in the network layer
ITU-T Y.1720 Protection switching for MPLS networks
IEEE 802.3 Ethernet LAN protocol
IETF RFC 791 Internet protocol
IETF RFC 826 Ethernet address resolution protocol or converting network protocol addresses to 48.bit Ethernet address for transmission on Ethernet hardware
IETF RFC 894 A standard for the transmission of IP datagrams over Ethernet networks
IETF RFC 1122 Requirements for Internet hosts - Communication layers
IETF RFC 1195 Use of OSI IS-IS for routing in TCP/IP and dual environments
IETF RFC 1332 The PPP Internet protocol control protocol (IPCP)
IETF RFC 1377 The PPP OSI network layer control protocol (OSINLCP)
IETF RFC 1661 The point-to-point protocol (PPP)
IETF RFC 1662 PPP in HDLC-like framing
IETF RFC 1812 Requirements for IP version 4 routers
IETF RFC 2460 Internet protocol, version 6 (IPv6) specification
IETF RFC 2472 IPv6 over PPP
IETF RFC 2784 Generic routing encapsulation (GRE)
IETF RFC 2961 RSVP Refresh overhead reduction extensions
IETF RFC 3031 Multiprotocol label switching architecture
IETF RFC 3032 MPLS label stack encoding
IETF RFC 3147 Generic routing encapsulation over CLNS networks
IETF RFC 3209 RSVP-TE: Extensions to RSVP for LSP tunnels
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this part, the following terms and definitions apply.
3.1.1
DCN
a network that supports Layer 1 (physical layer), Layer 2 (data-link layer), and Layer 3 (network layer) functions. A DCN can be designed to support transport of distributed management communications related to the TMN, distributed signalling communications related to the ASON, and other communications (e.g., orderwire/voice communications, software downloads, etc.)
3.1.2
ECC
ECC providing a logical operations channel between NEs. The physical channel supporting the ECC is technology specific. Examples of physical channels supporting the ECC are: a DCC channel within SDH, GCC channel within OTN OTUk/ODUk, or the COMMS OH channel within the OTNOOS
3.1.3
IP routing interworking function
a function allowing IP topology or routes to be passed from one IP routing protocol to a different incompatible IP routing protocol. For example, an IP routing interworking function may form a gateway between an integrated IS-IS routed DCN and an OSPF routed DCN
3.1.4
network layer interworking function
a function providing interoperability between nodes that support incompatible network layer protocols, such as static GRE tunnels, or an AE-DCF
3.1.5
AE-DCF
a function automatically encapsulating packets when necessary so that they may be routed by NEs that would otherwise be unable to forward them. An AE-DCF also features a matching de-encapsulation function to restore the packet back to its original form once it has traversed incompatible NEs
Contents of GB/T 21645.3-2009
Foreword i
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviations
4 DCN application
4.1 General application
4.2 ASON application
4.3 Division of applications
5 General requirements for ASON DCN
5.1 ASON DCN transport mode
5.2 DCN protocol encapsulation
5.3 DCN protocol interworking
6 Requirements for management communication network (MCN)
6.1 MCN architecture
6.2 Reliability of MCN
6.3 Security of MCN
6.4 MCN data communication functions (DCF)
7 Requirements for signalling communication network (SCN)
7.1 SCN architecture
7.2 General requirements for SCN
7.3 Reliability of SCN
7.4 Security of SCN
7.5 SCN data communication functions (DCF)
8 DCN functional architecture and requirements
8.1 DCN functional architecture
8.2 ECC access function
8.3 ECC data-link layer termination function
8.4 "Network layer PDU into ECC data-link frame" encapsulation function
8.5 Ethernet LAN physical termination function
8.6 "Network layer PDU into Ethernet frame" encapsulation function
8.7 Network layer PDU forwarding function
8.8 Network layer PDU interworking function
8.9 Network layer PDU encapsulation function
8.10 Network layer tunnelling function
8.11 Network layer routing function
8.12 IP routing interworking function
8.13 "Applications to network layer" mapping function
8.14 "MPLS PDU into ECC data-link layer" encapsulation function
8.15 "MPLS PDU into Ethernet frame" encapsulation function
8.16 MPLS LSP signalling function
8.17 MPLS LSP forwarding function
8.18 MPLS LSP path computation function
8.19 "Network layer packet into MPLS" encapsulation function
8.20 MPLS protection function
8.21 Message priority (optional)
9 DCN network performance
9.1 Basic requirements
9.2 Network performance parameters
