est specifications for SDH-based multi-service transport platform (MSTP) - Interoperability
1 Scope
This standard specifies the test specifications for interoperability of synchronous digital hierarchy (SDH)-based multi-service transport platform (MSTP) equipment, mainly including SDH optical interface interoperability test, generic framing procedure (CFP) interoperability test, virtual concatenation and link capacity adjustment scheme (LCAS) interoperability test, multiprotocol label switching (MPLS) interoperability test and Ethernet service interoperability test, etc.
This standard is applicable to the interoperability test for SDH-based MSTP equipment provided by different manufacturers.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB/T 15941-2008 Requirements for synchronous digital hierarchy (SDH) optical fiber cable line systems
YD/T 1443-2006 Technical requirements of generic framing procedure (GFP)
YD/T 1474-2006 Technical requirements of multi-service transport platform (MSTP) based on SDH - Embedded with MPLS function
YD/T 1631-2007 Technical requirements for synchronous digital hierarchy (SDH) virtual concatenation and link capacity adjustment scheme
YD/T 1961-2009 Technical requirements for SDH-based multi-service transport platform (MSTP) - Interoperability
ITU-T G.8011.2 Ethernet virtual private line service
3 Abbreviations
For the purposes of this standard, the following abbreviations apply.
CRC Cyclic Redundancy Check
CoS Class of Service
CSF Client Signal Failure
FCS Frame Check Sequence
GFP Generic Framing Procedure
LCAS Link Capacity Adjustment Scheme
LFD Loss of Frame Delineation
LSP Label Switching Path
MAC Media Access Control
MPLS Multiprotocol Label Switching
MSTP Multi-Service Transport Platform
NNI Network to Network Interface
OSPF Open Shortest Path First
PE Provider Equipment
PFI Payload FCS Identifier
PLI Payload Length Indicator
PLM Payload Mismatch
PSN Packet Switch Network
PW Pseudo-Wire
QoS Quality of Service
SDH Synchronous Digital Hierarchy
S-VLAN service vlan
TIM Trace Identifier Mismatch
UNI User-Network Interface
VC Virtual Container
VLAN Virtual Local Area Network
4 Basic test configuration and test content
4.1 Basic test configuration
The basic configuration of equipment provided by manufacturer for SDH-based MSTP interoperability test shall meet those specified in Table 1.
Table 1 Basic configuration provided by manufacturer for interoperability test
Manufacturer A Manufacturer B
Equipment type STM-1/4/16/64 STM-1/4/16/64
Equipment quantity More than 2 ports More than 2 ports
Service board card under test Ethernet board card and STM-N service interface card Ethernet board card and STM-N service interface card
See Figure 1 for an example of test networking.
Figure 1 Schematic diagram for MSTP interoperability test networking
4.2 Test contents
YD/T 1961-2009 specifies the interoperability model shown in Figure 2 and this standard specifies the corresponding test specifications for the interoperability contents involved in this interoperability model, as follows:
Foreword i
1 Scope
2 Normative references
3 Abbreviations
4 Basic test configuration and test content
4.1 Basic test configuration
4.2 Test contents
5 SDH optical interface interoperability test
5.1 Interface interoperability
5.2 Interoperability of low order time slot numbers
5.3 Overhead interoperability
6 GFP encapsulation interoperability test
7 Virtual concatenation and LCAS interoperability test
7.1 Virtual concatenation interoperability test
7.2 LCAS function interoperability test
8 MPLS interoperability test
8.1 Static assignment interoperability
8.2 Dynamic signalling interoperability (optional)
9 Ethernet service interoperability test
9.1 Point-to-point Ethernet private line service interoperability test
9.2 Point-to-multipoint Ethernet private line service interoperability test
9.3 QoS interoperability test
9.4 Long-term Ethernet service interoperability test
