7-sdh & mstp principle
TRANSCRIPT
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH & MSTP principleV0501
ZTE university
Course manager:Yuan ling
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Course contents:
•SDH system overview
•EOS principle
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overviewPlesiochronousPlesiochronous digital hierarchy (PDH)digital hierarchy (PDH)
400Mb/s
100Mb/s
32Mb/s
6.3Mb/s
Japan system
274Mb/s
45Mb/s
6.3Mb/s
565Mb/s
139Mb/s
34Mb/s
8Mb/s
2 Mb/s1.5Mb/s
North Americasystem
Europe system
×4×4
×4
×4
×4
×4
×3
×5
×6
×7
×4
1.5Mb/s
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
Adding and dropping 2M signal in PDHAdding and dropping 2M signal in PDH
140/34M bit/s 34/140M bit/s
O / E
Optical
interface
dropping
dropping
dropping
adding
adding
adding
E / O
PDH
34/8M bit/s 8/ 34M bit/s
8/2M bit/s 2/ 8M bit/s
2M bit/s
Optical
interface
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Directly adding and dropping of 2M in SDH
SDH system overview
ADMADM155MBIT/S 155MBIT/S
2M 2M
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
SDH feature
•• SDH unifies the main three digital system of the world, and it iSDH unifies the main three digital system of the world, and it is s entirely compatible with PDH.entirely compatible with PDH.
•• Support standard optical interface.Support standard optical interface.
•• Easy adding and dropping of 2M service.Easy adding and dropping of 2M service.
•• Rich overhead bytes for operation, management and maintenance.Rich overhead bytes for operation, management and maintenance.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
level STM-1 STM-4 STM-16 STM-64rate(Mbit/s) 155.520 622.080 2488.320 9953.280
SDH has a set of standard information structure level, and they are synchronous transmission module STM-1,STM-4,STM-16,which have leaf-like frame structure.
Rate level of SDHRate level of SDH
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
MSOH
RSOH
Frame structure of STMFrame structure of STM--NN1 frame
9×270×N bytes
1345
9 9 × N 261 × N270 × N
Segment overhead refers to the additional bytes necessarily required to ensure the normal and flexible transmission of information payload in the STM frame structure.Segment overhead consists of two parts: RSOH(regeneration SOH) and MSOH(multiplexing SOH).
•RSOH manages the regeneration segment.AU PTR is an indicator, used mainly to indicate the accurate position of the 1st byte of the information payload in the STM-N frame so that it is correctly dissolved at the receiving end.
•MSOH manages the multiplexing segment made up of several regeneration segment.
•information payload area is the place for storing various information capacities in the frame structure.•Information payload includes path overhead(POH).
RSOH
MSOH
•STM-1 frame is made up of 9 rows and 270 columns, and there are totally 2430 bytes. The transmission sequence is from left to right and from up to down. Every second 8000 frame will be transmitted.•The transmission rate is: 270×9×8×8000=155.520Mbit/s
STM-N payload
(including POH)AU PTRAU PTR
RSOH
MSOH
Transmissiondirection
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
RSOH
MSOHSOH
POH
SDH OverHead
OverHeadHD POH
LD POH
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
A1A1 A1A1 A1A1 A2A2 A2A2 A2A2 J0J0 **×× **××××××F1F1E1E1△△B1B1
D1D1
K2K2K1K1B2B2
××××E2E2M1M1S1S1
AUAU PTRPTR
△△
△△△△
△△
△△
B2B2 B2B2
D2D2 D3D3
D4D4D7D7D10D10
D5D5
D10D10 D11D11D8D8 D9D9
D6D6
D12D12
1 2 3
123456789
4 5 6 7 8 9
Arrangement of the SOH bytes in STMArrangement of the SOH bytes in STM--11
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview1) Frame alignment bytes: A1, A2. They are used to
identify the start position of a frame. A1, A2 have definite binary numerical values: A1 is 11110110; A2 is 00101000.
2) Regenerator section trace byte: J0. This byte is used to send the “Section Access Point ID ” repeatedly, so that the section receiver can determine whether the connection between the receive end and the preset transmit end is in a continuously connected status.
3) Bit interleaved parity 8 code (BIP-8 code) byte: B1. It is used to monitor the bit error of the RSOH.
R
S
O
H
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
4) Orderwire bytes: E1. It belongs to the RSOH, and is used to provide an orderwire communication voice channel. The orderwire channel rate is 64Kbit/s.
5) User channel byte: F1. This byte is reserved specially for the user (often referring to the network provider). It provides temporary data/voice channel connection or special maintenance purposes.
6) Data communication channel (DCC) bytes: D1, D2, D3.They can be used to form the transmission link of the SDH Management Network.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
M
S
O
H
SDH system overview
1) BIP-NX24: B2. It is used to monitor the bit error of the multiplexing section.
2) Data communication channel (DCC) bytes: D4~D12. They are used to form the transmission link of the SDH Management Network for MSOH.
3) Orderwire bytes: E2. It belongs to MSOH, and is used to provide an orderwire communication voice channel.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview4) Automatic protection switch (APS) channel bytes: K1
and K2 (b1-b5). The two bytes serves as APS signaling (commands).
5) Mutiplexer section-Remote Defect Indication (MS-RDI):K2 (b6-b8). This byte is used to return an indication to the transmit end, indication that the receive end has detected upstream section failure or received MS-AIS (Multiplexer Section-Alarm Indication Signal). MS-RDI is expressed by setting b6, b7 and b8 of the unscrambled K2 byte to “110”.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
6) Synchronous status byte: S1 (b5-b8).
7) Mutiplexer section-Remote Error Indication (MS-REI): M1. This byte transfers the number of interleaved bit blocks of errors detected by the B2 (0-255).
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
Multiplexing principle introduction
1. Several important concepts;
2. Mapping, Alignment and Multiplexing process.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Container
SDH system overview
• Container is a kind of information structure. Its main function is adaptation(rate adjustment). All the common PDH system signals can be contained in several standard containers.
• ITU-T recommended 5 standard containers:C-11、C-12、C-2、C-3 and C-4.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overviewVirtual container
• Virtual container is another information structure which is almost the most important in SDH system.
• Virtual container consists of two parts:the signal from container and low level POH.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
Tributary unit and administration unit• TU is made up of low level VC and TU PTR. It is a
information structure which supplies the adaptation function between the low level channel layer and high level channel layer.
• AU is made up of high level VC and AU PTR. It is a information structure which supplies the adaptation function between the high level channel layer and multiplexing segment layer.
• PTR is used to indicate the starting location of VC in TU or in STM-N frame. But the location of pointer itself is fixed.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overviewMapping
• The process of putting various tributary signal from containers into related virtual containers is called mapping.
• Its essence is to make the various tributary signals synchronized with related VC containers so that VC can be an independent entity in the transmission, multiplexing and
cross connection.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Multiplexing
SDH system overview
• The process of adapting multiple tributary units (TU-12 and TU-3) to the high level VC-4 or adapting multiple administration units to the multiplexing segment is called multiplexing.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overviewBasic process of mapping and multiplexingBasic process of mapping and multiplexing
Synchronous multiplexing
Insert pointer
Insert POH
Mapping intocontainer
VCTU或AU
High lever VC or STM-N
SDH tributary signal
Insert pointer
Insert POH
Mapping into container with rate adaptation
PDH tributary signal
C
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overview
Mapping and multiplexing structure of SDHMapping and multiplexing structure of SDH
VC
STM-N× N × 1 140Mb/s
45Mb/s34Mb/s
6.3Mb/s
2Mb/s
1.5Mb/s
×3
×7
×7
×1×3
C-11
C-12
C-2
C-3
C-4
VC-11
VC-2
VC-3
VC-3
VC-4
TU-11
TU-12
TU-2
TU-3
TUG-2
TUG-3
AUG-4
AU-3
AU-4
VC-12×3
×4
×1
C
TU
AU
TUGAUG
STM-Ncalibrating
multiplexing
mapping
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overviewMapping and multiplexing process
STM-N
× N × 1C-12VC-12VC-4 TUG-2AUG-4 AU-4 TU-12 2Mb/s
Rate adjustment
LD POHSOH AU PTR
×3multiplexing
×7 multiplexing
HD POH
×3multiplexing
×Nmultiplexing
TUG-3
TU PTR
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SDH system overviewRate varying in multiplexing
The rate varying of 2M signal in multiplexingC-12=2M mapping=2.176
VC-12=C-12+LPOH=2.240
TU-12=VC-12+TU-PTR=2.304
TUG-2=3*TU-12=6.912
TUG-3=7*TUG-2+。。。=49.152
VC-4=3*TUG-3+HPOH=150.336
AU-4=VC-4+AU-PTR=150.912
AUG=AU-4=150.912
STM-N=N*(AUG+SOH)=N*155.520
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
1. EOS principle contents:
1) EOS system ;
2) Ethernet frame encapsulation;
3) Continuous cascade and virtual cascade;
4) EOS networking application.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
EOS system
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
FramerFramer
L2 switch
SDH cross matrix
Ethernet transparently transmit
SDH
OL
SDH
OL
PDH/SDH interface、 PoS Ethernet interface(10M/100M/GE)
STM-N STM-N
EOS principleEOS system
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
VC
Mapping
VC
Mapping
M
S
O
H
M
S
O
H
R
S
O
H
R
S
O
H
STM-N
interface
STM-N
interface
EOS
Ethernet interface
L
2switching
PPP
/LAPS
/GFP
Assembly
Cross connection
EOS function module
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
Ethernet frame encapsulation
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principleEOS encapsulation protocol
IEEE 802.3 MAC
PPP/LAPS/GFP
VC12/VC3/VC4
Multiplex Section
Regeneration Section
PHY
Protocols:PPP、LAPS and GFP
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
Continuous cascade and virtual cascade
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
Continuous cascade
TDM
VC-4
VC-4
VC-4
VC-4
VC-4
VC-4
VC-4
VC-4
VC-4-4C VC-4-4C
IP TDM ATM
STM-16
IP/ATM TDM
VC-4-4C 4×VC-4STM-4
STMSTM--16 NE which supports VC16 NE which supports VC--4C function4C function
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
Virtual cacade
VC-12
VC-12
VC-12
VC-12
VC-12
VC-12-NC
Relay
SDH networkSDH network...
RX
TX
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
EOS networking application
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
Ethernet single board networking
Star networking:
1) Fit for trunking and centralized service;
2) Can supply bandwidth assurance;
3) High requirement for MSTP trunking port.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
Link networking:
1) Fit for separated service, relay is serious;
2) Sharing bandwidth, has high usage, and is fit for the network which lack of optical line resource.
3) Need do the Cos configuration. When sharing the bandwidth, require high Qos ability.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com
ZTE University univunivuniv...zteztezte.com..com..com.cncncnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
EOS principle
Loop networking:1) Put STP in use, and avoid that logic topo
become to be loop;
2) In the condition that you don’t configure the physical protection, it still has the protection function;
3) Other features are same as link networking.Mixed networking:
According to the basic networking, do the network analysis.
PDF created with FinePrint pdfFactory Pro trial version http://www.pdffactory.com