Guide to Optix OSN 3500 Service and Protection Configuration

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Guide to OptiX OSN 3500&2500 Service and Protection Configuration

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Huawei Technologies Co, Ltd All Rights Reserved


Confidentiality Level: Internal Use Only

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2005-3-3

Revised version

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Huawei Confidential. No disclosure without permission.

Author

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Contents Chapter 1 Guide to OptiX OSN 3500&2500 Service and Protection Configuration ................... 6 Chapter 2 Service Configuration Type ........................................................................................... 6 2.1 Networking and Protection Modes Supported by OptiX OSN3500/2500 ............................. 6 2.2 Other Special Service Configuration Types.......................................................................... 6 Chapter 3 Service Generation Principles of the Host................................................................... 7 3.1 The Service Configuration Is Based on Physical Optic/Electrical Ports Instead of Logical Systems. ..................................................................................................................................... 7 3.2 Service Configuration Is “As Is”, Without Automatic Service Duplication as in the PP Ring 8 3.3 Any Bi-directional Service Should be Composed of Two Unidirectional Service Configuration Commands. .......................................................................................................... 8 3.4 Generation of the MS Protection Data.................................................................................. 8 Chapter 4 Service Configuration Principles and Illustrations in Various Networking Modes . 9 4.1 Unprotected Modes of Chain Networking............................................................................. 9 4.1.1 Configuration Principles and Features....................................................................... 9 4.1.2 Configuration Illustration ............................................................................................ 9 4.2 Point to Point/Chain Linear MS protection.......................................................................... 10 4.2.1 Service Configuration Principles .............................................................................. 10 4.2.2 Configuration Illustration .......................................................................................... 11 4.2.3 Precautions for Configuration................................................................................... 13 4.3 Chain Hub Network............................................................................................................. 13 4.4 2-Fiber Bi-directional MS Shared Protection Ring.............................................................. 13 4.4.1 Service Configuration Features................................................................................ 13 4.4.2 Configuration Illustration .......................................................................................... 16 4.4.3 Service Configuration Principles .............................................................................. 17 4.5 2-Fiber Unidirectional MS Dedicated Protection Ring ........................................................ 17 4.5.1 Service Configuration Principles .............................................................................. 17 4.5.2 Configuration Illustration .......................................................................................... 18 4.6 4-Fiber Bi-directional MS Shared Protection Ring.............................................................. 18 4.6.1 Service Configuration Principles .............................................................................. 18 4.6.2 Configuration Notes ................................................................................................. 18 4.6.3 Configuration Illustration .......................................................................................... 19 4.7 Partial Multiplex Section Ring ............................................................................................. 19 4.7.1 Configuration Principles ........................................................................................... 19 4.8 Circumscribed MS Protection Rings ................................................................................... 20 4.9 Intersected MS Protection Rings ........................................................................................ 21 4.10 Multiplex Section Ring Chain............................................................................................ 22 4.11 SNCP ................................................................................................................................ 23 4.11.1 Service Configuration Principles ............................................................................ 23 4.11.2 Configuration Illustration ........................................................................................ 23 4.11.3 PP Protection Configuration................................................................................... 24 4.11.4 Working and Protection Paths in Various SNCP Networks ................................... 25 4.11.5 Configuration Notes ............................................................................................... 25 4.12 Shared Fiber Virtual Path Protection ................................................................................ 25 4.12.1 Concept of “Shared Fiber Virtual Path Protection”................................................. 25 4.12.2 Configuration Principles of “Fiber Shared Virtual Path Protection” of the OSN 3500/2500 ......................................................................................................................... 27 4.12.3 Configuration Illustration ........................................................................................ 27 4.13 Inter-ring Interworking Service Protection in the DNI Mode ............................................. 28 4.13.1 Service Configuration Principles ............................................................................ 28 4.13.2 Configuration Illustration ........................................................................................ 28

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Chapter 5 Configurations of Other Special Types of Services.................................................. 32 5.1 Broadcast Services............................................................................................................. 32 5.1.1 Configuration Principles ........................................................................................... 32 5.1.2 Configuration Notes ................................................................................................. 32 5.2 Concatenation Services...................................................................................................... 32 5.2.1 Configuration Principles ........................................................................................... 32 5.2.2 Configuration Notes ................................................................................................. 33 5.2.3 Configuration Illustration .......................................................................................... 33 5.3 TPS Configuration............................................................................................................... 33 5.3.1 Configuration Notes ................................................................................................. 33 5.3.2 Configuration Illustration .......................................................................................... 34 5.4 Loopback Service of This Board......................................................................................... 34 5.5 Hardware REG.................................................................................................................... 34 5.5.1 Attribute Settings ...................................................................................................... 34 5.6 Extra Services of Multiplex Sections (Linear and Ring)...................................................... 35 Chapter 6 Configuration Restrictions .......................................................................................... 35

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Keyword: OSN 3500/2500

Protection Configuration

Summary: The lowest cross-connect level of the OptiX OSN 3500/2500 V100R001 is VC12. The services are configured from board to board in a relatively simply way. The service types include vc12, vc3, vc4, au4-4c, au4-8c, au4-16c, au4-64c and au3. Abbreviation list: None. Reference list: None.

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Chapter 1 Guide to OptiX OSN 3500&2500 Service and Protection Configuration Preface: The lowest cross-connect level of the OptiX OSN 3500/2500 V100R001 is VC12. The services are configured from board to board in a relatively simply way. The service types include vc12, vc3, vc4, au4-4c, au4-8c, au4-16c, au4-64c and au3.

Chapter 2 Service Configuration Type The following illustrates the networking types and some special service ways supported by OptiX OSN 3500/2500.

2.1 Networking and Protection Modes Supported by OptiX OSN3500/2500 Table 2-1 Table 1 Networking and protection modes supported by OptiX OSN 3500/2500 No.

Networking and protection types

1

Point to point/chain and its combination networks

2

MS protection ring

Sub-class 3.1 3.2 3.3 3.4 3.5 3.6 3.7

3

Unprotected point to point/chain networking 1:1, 1+1 and 1:N (N ≤ 14) linear MS protection mode Chain hub network 2-fiber bi-directional MS protection: STM-4, STM-16, STM-64 2-fiber unidirectional MS protection: STM-1, STM-4, STM-16, STM-64 4-fiber bi-directional MS protection: STM-4, STM-16, STM-64 Partial multiplex section Multiplex protection for optical interfaces of various levels

3.8

Two MSP rings circumscribing

3.9

Two MSP rings intersecting

Composite ring network

MSP ring chain 3.10

For the intersected/circumscribed SNCP rings, intersected/circumscribed SNCP rings and MSP rings, and SNCP ring chain, refer to the part “SNCP”.

4

SNCP

3.11

Various networking modes (including a PP ring)

5

Protection of shared fiber-optic virtual path

3.12

MSP and SNCP, SNCP and SNCP, SNCP and MSP

6

Inter-ring interconnection service protection in DNI mode

SNCP ring and SNCP ring 3.13

SNCP ring and MSP ring MSP ring and MSP ring

2.2 Other Special Service Configuration Types 1. Broadcast service 2. Concatenation service 2005-3-3


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3. TPS configuration 4. Loopback service of this board 5. Hardware REG. Not supporting software REG 6. Extra services of multiplex sections (linear or ring)

Chapter 3 Service Generation Principles of the Host 3.1 The Service Configuration Is Based on Physical Optic/Electrical Ports Instead of Logical Systems. Taking the service creation command in the following table as an example: Cross-connect creation command Name

cfg-add-xc

Function

Create cross-connection

Command level

System operation

Open scope Version

User level OSN 3500: 5.21.01 OSN 2500: 5.27.01 :cfg-add-xc:xc-id,src-bid,src-pid,src-auid,src-pathid,dst-bid,dst-pid,dst-auid, dst-pathid,xc-level; Number of parameters=10, parameter blocks repeated Location Meaning and value of parameters 1 XC serial number: High-order service: 1 ~ 376 for OSN 3500/1~120 for OSN 2500; Low-order service: 377 ~ 3526 for OSN 3500/257 ~ 3028 for OSN 2500; (0 means that the serial number is allocated automatically by the host software). 2 Source slot number: OSN 3500: 1-8, 11-16, 17 (Slot 17 only supports 80G XC capacity) OSN 2500: 5-13 (when there is no division) 3 Source port number: 1-X, X is subject to the type of board installed in this slot. 4 Source port number: When the board is a TU, this item is 0. When the board is another board type, this item is 1-X and X is subject to the type of board installed in this slot. 5 Source low-order path number: When the board is a TU or the service level is high order, this item is 0. Otherwise, it is a low-order path number (VC12 and VC3) 6 Destination slot number: OSN 3500: 1-8, 11-16, 17 ((Slot 17 only supports 80G XC capacity) OSN 2500: 5-13 (when there is no division) 7 Destination port number: 1-X, X is subject to the type of board installed in this slot. 8 Destination high-order path number: When the board is a TU, this item is 0. When the board is another board type, this item is 1-X and X is subject to the type of board installed in this slot 9 Destination low-order path number: When the board is a TU or the service level is high order, this item is 0. Otherwise, it is a low-order path number (VC12 and VC3) 10 XC level: vc12, vc3, vc4, au4-4c, au4-8c, au4-16c, au4-64c, au3

Input format Input parameter

Output format Example

:cfg-add-xc:0, 5, 1, 1, 0, 8, 1, 1, 0, vc4;(High order, unidirectional) :cfg-add-xc:0, 8, 1, 2, 1, 13, 1, 0, 0, vc12;(Low order, unidirectional) :cfg-add-xc:0, 6, 1, 1, 1&&16, 3, 1&&16, 0, 0, vc12;(Low order, unidirectional)

Note that the following configuration parts are incorrect. Why? :cfg-add-xc:0, 12, 1&2, 1, 0, 5, 1, 1&2, 0, vc4; 2005-3-3


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:cfg-add-xc:0, 5, 1, 1&2, 0, 12, 1&2, 1, 0, vc4; The reason is that parameter repetition input is possible only for “source channel number (or sink channel number)” and “source timeslot number (or sink timeslot number)” in the command line configuration, but not for slot numbers and optical interface numbers. Therefore, it is not in compliance with the syntax for “12,1&2,1” to represent the first VC4 of Optical interface 1 and Optical interface 2.

3.2 Service Configuration Is “As Is”, Without Automatic Service Duplication as in the PP Ring The host does not provide the function of automatic generation of SNCP/PP service protection paths. The network-wide complex service protection routes, such as SNCP, are sent to the host after being generated by the network management according to the appropriate algorithm (this is the actual function of network management), or the service routes are manually sent to the host through the command lines. In the old products (2500+, 155/622, etc.), for any service configured in a single direction for the SNCP/PP ring, the host will duplicate a reverse service automatically to make the service a bi-directional one.

3.3 Any Bi-directional Service Should be Composed of Two Unidirectional Service Configuration Commands. This is based on the second principle mentioned above.

3.4 Generation of the MS Protection Data The multiplex section rings and linear multiplex section services need configuring only the services in the normal working state other than the protection services on the protection channels. The protocols and their cross-connect algorithms (MSP, SNCP and TPS) of OSN 3500/2500 are not on the main control board but on the cross-connect board. The main control implements the configuration part of the protocols, but the protocol execution involves no main control performance. This is different from other products and requires special attention. In case of switchover due to fiber cut, the protocol algorithms will automatically generate corresponding bridge and switching data, which are then sent to the lines and cross-connect boards. Please note that the switched service data are generated only in case of switchover. Refer to the following Configuration Principles and Illustrations of Special Services for the generation of SNCP, partial multiplex sections, extra services of the multiplex section, and concatenation services.

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Chapter 4 Service Configuration Principles and Illustrations in Various Networking Modes Since OSN 3500 is similar to OSN 2500 except for the difference in slot creation, this document only takes OSN 3500 as an example. Refer to OSN 3500 for the configuration ways of OSN 2500.

4.1 Unprotected Modes of Chain Networking 4.1.1 Configuration Principles and Features The 5.0 serial hosts, though without logical system concept in service configurations, have their own features in chain networking: In the chain unprotected networking, there is no east or west concept but mere physical connections. NEs are of chain TM or ADM types in practical networking, but there is no TM or ADM attribute settings in the host. In the chain configurations, work is done when the boards are created and the services are connected bi-directionally from one port to another.

Figure 4-1 Figure 1 Point to point/chain unprotected modes The specific command line configurations are illustrated as follows. As shown in Figure 1, it is simple and made clear by the following illustration.

4.1.2 Configuration Illustration z

No protection of point –to-point and link

:lognew:"szhw","nesoft"; :per-set-endtime:15m,1990@0@0@0@0@0; :per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa:1,ssn1sep1:6,ssn1sl16:18,nscc; 2005-3-3


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:cfg-add-xc:0,6,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,1,1,1,0,6,1,1,0,vc4; :cfg-verify;

4.2 Point to Point/Chain Linear MS protection 4.2.1 Service Configuration Principles The chain networks (namely TM + ADM+...+ADM + TM) can be connected in the point-to-point way in practice. That is, convert one ADM node to two back-to-back TM nodes. In this way, if one fiber segment is faulty, it is sufficient to perform switchover between the two stations near the fiber, with no other stations involved. The advantage is improved reliability. Attention should be given to the following features of OSN 3500/2500 in forming linear MS protection: Since the OSN 3500/2500 linear multiplex sections are all based on TM, and the protection switchover are implemented in the point-to-point way, there is neither east/west concept for ADM nor pass-through problem for K byte. Therefore, it is unnecessary to plug the working and protection boards of linear multiplex sections in the dual slots. Similarly, there is no restriction to the plugboard slots for 1: N protection. In this host, the 1+1 protection mode can be configured in the uni-end/dual end mode and in the revertive/non-revertive mode. The 1:N protection is always in the dual-end revertive mode. The 1+1 uni-end non-revertive mode is recommended in general. If unbend switching is configured, the service transmit for the originating end must be configured in the dual transmit mode, namely to both the working channel and the protection channel. The host will not duplicate the service. It is sufficient to configure one 1+1 chain to receive the service. If the configuration is performed by NM, the configuration algorithm module of T2000 NM will duplicate the service according to the “uni-end” attributes. Therefore, transmission NM and reception NM must be configured respectively. The actually transmitted services can be checked with “:cfg-get-xc”, “:cfg-get-xcconnect” and “cfg-get-bdlowxc”. Protocol support is needed for both uni-end switching and dual end switching, but there is no K-byte transfer in the uni-end mode. In Figure 2, 1:1 protection chain is used as an example.

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4.2.2 Configuration Illustration

Figure 4-2 Figure 2 1:1 protection chain z

NE2 is configured as follows:

:lognew:"szhw","nesoft"; :per-set-endtime:15m,1990@0@0@0@0@0; :per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10, gxcsa:1,ssn1sep1:7&8&11&12,ssn1sl16:18,nscc; :cfg-add-lmspg:1,1pn,1,rvt,biend; :cfg-set-lmsbdmap:1,0,8,1; :cfg-set-lmsbdmap:1,1,7,1; :cfg-set-lmsattrib:1,600; :cfg-add-lmspg:2,1pn,1,rvt,biend; :cfg-set-lmsbdmap:2,0,12,1; :cfg-set-lmsbdmap:2,1,11,1; :cfg-set-lmsattrib:2,600; :cfg-add-xc:0,7,1,1,0,11,1,1,0,vc4; :cfg-add-xc:0,11,1,1,0,7,1,1,0,vc4; :cfg-verify; z

NE3 is configured as follows:

:lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; 2005-3-3


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:cfg-add-board:9&10,gxcsa:1,ssn1sep1:7&8,ssn1sl16:18,nscc; :cfg-add-lmspg:1,1pn,1,rvt,biend; :cfg-set-lmsbdmap:1,0,8,1; :cfg-set-lmsbdmap:1,1,7,1; :cfg-set-lmsattrib:1,600; :cfg-add-xc:0,7,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,1,1,1,0,7,1,1,0,vc4; :cfg-verify; z

In case of 1:3 linear MS protection, the configuration illustration is as follows:

:lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa:1,ssn1sep1:7&8,ssn1sl16:11&12,ssn1sl16:18,nscc; :cfg-add-lmspg:1,1pn,3,rvt,biend; :cfg-set-lmsbdmap:1,0,7,1; :cfg-set-lmsbdmap:1,1,8,1; :cfg-set-lmsbdmap:1,2,11,1; :cfg-set-lmsbdmap:1,3,12,1; :cfg-set-lmsattrib:1,600; :cfg-add-xc:0,7,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,1,1,1,0,7,1,1,0,vc4; :cfg-verify; z

In case of 1+1 uni-end switching, the service originating end must be configured in the dual transmit mode. In this way, the originating end must be configured with a dual transmit service through the command line configuration, which is illustrated as follows (NE3):

:lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; 2005-3-3


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:cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa:1,ssn1sep1:7&8,ssn1sl16:18,nscc; :cfg-add-lmspg:1,1j1,1,norvt,uniend; :cfg-set-lmsbdmap:1,0,8,1; :cfg-set-lmsbdmap:1,1,7,1; :cfg-add-xc:0,7,1,1,0,1,1,1,0,vc4;//Only one should be configured for receiving :cfg-add-xc:0,1,1,1,0,7,1,1,0,vc4;//This is sent to the 1+1 working channel :cfg-add-xc:0,1,1,1,0,8,1,1,0,vc4;//This is sent to the 1+1 protection channel :cfg-verify;

4.2.3 Precautions for Configuration Two minutes after the configuration is completed, the linear multiplex section protocol will be started automatically, or can be started manually with the command “:cfg-start-lms:PgId;”. The ADM NE under the linear MS protection is configured with two back-to-back TMs, each configured under linear protection.

4.3 Chain Hub Network

Figure 4-3 Figure 3 Chain hub network In Figure 3, the NE in the middle is configured as a chain hub point. The configuration is also based on the chain mode, so the command line is similar to that in the chain configuration, and refer to the related example for details.

4.4 2-Fiber Bi-directional MS Shared Protection Ring 4.4.1 Service Configuration Features 1)

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The multiplex section rings are divided into eastbound and westbound rings. That is, it is necessary to map the corresponding original and homed VC4 resources to w1 and e1 (also w2 and e2 for the 4-fiber rings), and thus primary ring directions exist. Defining eastbound and westbound NEs is Huawei Confidential. No disclosure without permission.

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for the purpose of defining of the full-ring multiplex section parameters. 2)

In the multiplex section node parameter definition for the equipment, such as the command “:cfg-set-rmsattrib:1,1,5,2,600;”, the second parameter “1” indicates the local node number, the third parameter “5” indicates the westbound node number, and the fourth parameter “2” indicates the eastbound node number. In this way, the node numbers of a NE and their relations with the left and right nodes are determined.

After node relations are defined for all the NEs in this way, the network-wide multiplex section networking relations are determined uniquely, like a circle formed by all nodes. One of the advantages in this node definition is easy capacity expansion, as shown in Figure 4 (A):

Figure 4-4 Figure 4 Multiplex section node definition (with OSN 3500 as an example) Originally, NE1 ~ NE4 form a MSP ring, with the nodes defined from 4 to 7. If you want to add one NE NE5 to the ring now, it is sufficient to modify part of the multiplex section nodes as follows: The node number of the added E5 is set to “8”, the westbound node to “7”, and the eastbound node to “4”. For the multiplex section attributes of the original NE1, modify the westbound node number from “7” to “8”. For the multiplex section attributes of the original NE4, modify the westbound node number from “4” to “8”. The expansion is thus completed for the node, which involves only parameter modifications for the eastbound and westbound nodes adjacent to the added nodes. For the original multiplex section node settings, in contrast, it is necessary to increase by 1 the “Maximum node number” in the multiplex section attributes of all the NEs. Another advantage in this multiplex section node definition is willful and flexible setting, without need to increase from 0 by 1 in the primary ring direction. To be in agreement with the NM data, it is necessary to regard the NE with the minimum ID number in the ring network as the reference for the setting specifications of the node numbers, and set from 0 in the primary ring direction (to transmit in the east and receive in the west), allowing no leap. 3)

2005-3-3

When mapping VC4 to the multiplex section in the eastbound/westbound direction, it is sufficient to map the working channel and it is unnecessary to map the protection channel. For example, if SL16 is plugged in the slot 2, Huawei Confidential. No disclosure without permission.

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the map command in the 2-fiber bi-directional multiplex section ring configuration is: :cfg-set-rmsbdmap:1,w1,2,1,1&&8; It is unnecessary to map the protection channel of 9&&16. Note: Make sure not to map the VC4 resources of the protection channel, otherwise errors may rise. To be specific, map the first 8 VC4s (or part of them) for SL16, and map the first 32 VC4s in the STM-64 for SL64. It could be easily concluded that, in the 2-fiber bi-directional multiplex section ring, the active channels must be defined in a number not larger than half of the maximum VC4 channel amount in the line, and only the first half could be used. The standby channels are duplicated automatically and correspond to the active channels one to one. The corresponding relation is “active channel number + maximum channel number/2”. The difference is that, in the unidirectional multiplex section ring, all the VC4s in the active optical path of span sections are working channels. In addition, the optical interface mapping relations of the 4-fiber ring are different, as detailed below. 4)

As shown in the above mapping commands, the mapping of partial multiplex sections is supported. Refer to the subsequent “Partial Multiplex Sections” for details.

5)

There are restrictions to the dual slots of the plugboards in the ring networking.

Try to form the multiplex section rings between the corresponding optical interfaces in dual slots, if not specially required. The reason lies in the existence of overhead bus interworking between the corresponding optical interfaces in dual slots, which could realize fast pass-through handling of the overhead (in K bytes) between the slots of ADM in the eastbound and westbound directions. Table 2 and table 3 list the layout of the dual slots of OSN 3500 and OSN 2500: Table 4-1 Table 2 Layout of OSN 3500 dual slots Pairing slots 8 7 6 5

11 12 13 14

Pairing slots 4 3 2

15 16 17

Table 4-2 Table 3 Layout of OSN 2500 dual slots Pairing slots 8 7 6

Pairing slots

11 12 13

The layout of dual slots is symmetric horizontally with the cross-connect board at the center. Try to use dual slots for form a ring network. The dual optical interfaces on the multiple optical interface board (sep1) in the dual slots are in the one-to-one relationship, namely optical 1 corresponds to optical 1, optical 2 corresponds to optical 2, and so on, and 8 optical interfaces are supported. The OSN3500 circuit board supports K-byte pass-through by software means, and any two optical interfaces can actually form a ring, but at a small switchover speed. This is not recommended unless no way is possible.

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6)

Twelve ring MS protection groups and forty linear MS protection groups are supported.

7)

Two minutes after successful configuration check and transmission, the MS protection groups will start automatically, and could be started with the command “:cfg-start-rms: PgId;” as well.

4.4.2 Configuration Illustration The 2-fiber bi-directional MS shared protection ring is illustrated in Figure 5: 11

NE1

8

NE5

NE2 STM-64 2f bi msp ring

NE3

NE4

Figure 4-5 Figure 5 2-fiber bi-directional MS shared protection ring The configuration illustration is as follows (NE1): :lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa:1,ssn1sep1:8&11,ssn2sl64:18,nscc; :cfg-add-rmspg:1,2fbi; :cfg-set-rmsbdmap:1,w1,8,1,1&&32; :cfg-set-rmsbdmap:1,e1,11,1,1&&32; :cfg-set-rmsattrib:1,1,5,2,600; :cfg-add-xc:0,1,1,1,0,8,1,1,0,vc4; :cfg-add-xc:0,8,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,1,2,1,0,11,1,1,0,vc4; :cfg-add-xc:0,11,1,1,0,1,2,1,0,vc4; :cfg-verify;

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4.4.3 Service Configuration Principles The generation of the MS protection services is based on two aspects of configurations: one is the configuration of the mapping relations between the MS protection units, and the other is service configurations. Taking the above NE1 configuration as an example, the 1&&32 VC4 in slot 8 are mapped to the westbound direction of the multiplex section ring, and the 1&&32 VC4 in slot 11 are mapped to the eastbound direction of the multiplex section ring. This is the first aspect of configuration. The second aspect of configuration is the timeslots passing through the eastbound and westbound slots, such as “:cfg-add-xc:0,1,1,1,0,8,1,1,0,vc4;”. In case of switchover due to fiber cut, the timeslots configured through protocol analysis pass through the eastbound and westbound slots mapped from the multiplex sections, and generate protection services corresponding to this part of services (for example, the No.1 VC4 of the optical interface 1 in the slot 1 is sent to the first VC4 in the westbound slot 8, and the generated switched data are sent to the No.33 VC4 in the eastbound slot 11), which are then sent to the lines and cross-connect boards. This part of protection data are generated automatically by the protocol after switchover, and need no manual configuration. Note: To improve the switchover speed, the future versions may optimize the software, and it is possible to calculate in advance the pages of the cross-connect board to enable direction page transmission in switchover. Extra service configuration is supported on the protection channels of the MS protection ring. The configuration method is simple. Just configure the extra services onto the protection channel, and this part of services will be overlaid after switchover.

4.5 2-Fiber Unidirectional MS Dedicated Protection Ring 4.5.1 Service Configuration Principles The unidirectional MS protection ring is a kind of protection ring dedicated to MS, and is usually a 2-fiber ring. An MS dedicated protection ring consists of two reverse rings, which transmit signals in opposite directions. In this way, only one direction of the ring transmit is sent to the protected working services, and the other direction of the ring transmit is retained for protecting the working services. The protection capacity is not shared by all the span sections. The maximum service demand volume carried by the ring is restricted to the capacity of a span section, known as a group of multiplex sections between two adjacent nodes in the ring. The service demand modes in the ring do not affect the capacity of a unidirectional ring. That is to say, the total demand volume of all the nodes does not exceed the capacity of one single span section. The MS dedicated protection ring needs to use the APS protocol. This type of networking is applied mainly to the STM-1 rate. The service configuration usually follows the so-called “Primary ring” direction, namely “to transmit in the east and receive in the west”. Other principles are the same as those of “2-fiber bi-directional multiplex section”.

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4.5.2 Configuration Illustration Taking the above networking in Figure 5 as an example as well, if it is a 2-fiber unidirectional MS protection ring, NE1 is configured as follows: :lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa:1,ssn1sep1:8&11,ssn2sl64:18,nscc; :cfg-add-rmspg:1,2funi; :cfg-set-rmsbdmap:1,w1,8,1,1&&64 :cfg-set-rmsbdmap:1,e1,11,1,1&&64 :cfg-set-rmsattrib:1,1,5,2,600; :cfg-add-xc:0,1,1,1,0,11,1,1,0,vc4; :cfg-add-xc:0,8,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,1,2,1,0,11,1,2,0,vc4; :cfg-add-xc:0,8,1,2,0,1,2,1,0,vc4; :cfg-verify;

4.6 4-Fiber Bi-directional MS Shared Protection Ring The OSN 3500/2500 can support both the 2-fiber unidirectional/bi-directional MS protection ring and the 4-fiber bi-directional MS protection ring.

4.6.1 Service Configuration Principles A 4-fiber ring protection group consists of two systems, a working system and a protection system (not a logical system). The working system includes the w1 and e1 definitions, and the protection system includes the w2 and e2 definitions. Refer to the 4-fiber ring optical interface mapping commands. Others are the same as the 2-fiber bi-directional MS shared protection ring.

4.6.2 Configuration Notes 1)

The optical interface mapping of the 4-fiber ring is different from that of the 2-fiber bi-directional multiplex section ring. For both the working system and the protection system, it is necessary to map all the VC4s in the optical interface, as shown in the illustration,

Because the relation between the protection channel and the working channel is determined for the 2-fiber bi-directional MS shared ring and needs no setting. For the 4-fiber ring, however, the indefinite slots result in the indefinite 2005-3-3


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correspondence between the working system and protection system, making setting necessary. 2)

The services need to be configured only to the working system.

3)

Refer to the related documentations for the protection principles of the 4-fiber ring.

4.6.3 Configuration Illustration z

Example of 4-fiber bi-directional MSP configuration

:lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa:1,ssn1sep1:7&8&11&12,ssn1sl16:18,nscc; :cfg-add-rmspg:1,4f //Note: For two-fiber ring, two parameter options "uni" and "bi" are available. A four-fiber ring only supports bidirectional transmission, so the parameter "bi" is not necessary. :cfg-set-rmsbdmap:1,w1,7,1,1&&16; //Map West 1 optical board, optical interface, VC4 :cfg-set-rmsbdmap:1,e1,12,1,1&&16; //Map East 1 optical board, optical interface, VC4 :cfg-set-rmsbdmap:1,w2,8,1,1&&16; //Map West 2 optical board, optical interface, VC4 :cfg-set-rmsbdmap:1,e2,11,1,1&&16; //Map East 2 optical board, optical interface, VC4 :cfg-set-rmsattrib:1,1,5,2,600; :cfg-add-xc:0,1,1,1,0,7,1,16,0,vc4; :cfg-add-xc:0,7,1,16,0,1,1,1,0,vc4; :cfg-verify;

4.7 Partial Multiplex Section Ring 4.7.1 Configuration Principles Suppose one SL16 is plugged in the slot 7, and look at the multiplex section ring mapping command: :cfg-set-rmsbdmap:1, w1, 7, 1, 1&&5; It indicates to map the 1&&5 VC4 of the optical interface 1 in the slot 7 to the west of the multiplex section. As is known, the first 8 VC4s of SL16 can serve as 2005-3-3


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working channels. Now five of them are mapped to the multiplex section and the others are reserved for future use. This is known as a partial multiplex section. After such configuration, the system will automatically treat the 9&&13 VC4 of SL16 as the protection channel for the working channel. Certainly, corresponding to the west, it is also necessary to map the 1&&5 VC4 to the multiplex section in the east. In the above illustration, what are the reserved 6&&8 VC4s for? They could be used to form chain configuration or SNCP configuration, thus realizing the sharing of different networking types in the same optical path. They could also be used to form another MS protection ring. Refer to the document OSN3500 Multiplex Section Descend and Multiplex Section Optical Path Shared Characteristics for detailed configurations. Evidently, the following configuration is also a partial multiplex section (the generated protection channel is 9&11&13&15): :cfg-set-rmsbdmap:1, w1, 7, 1, 1&3&5&7;

4.8 Circumscribed MS Protection Rings

Figure 4-6 Figure 6 Circumscribed MS protection rings In the circumscribed point, configure two MS protection groups, map the corresponding optical interfaces to these two protection groups, and configure other NEs as multiplex section rings. The following is the configuration illustration of the circumscribed point: :lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,excsa:1,ssn1sep1:7&8&11&12,ssn2sl64:18,nscc; :cfg-add-rmspg:1,2fbi; :cfg-set-rmsbdmap:1,w1,7,1,1&&32; :cfg-set-rmsbdmap:1,e1,12,1,1&&32; :cfg-set-rmsattrib:1,1,4,2,600; 2005-3-3


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:cfg-add-rmspg:2,2fbi; :cfg-set-rmsbdmap:2,w1,8,1,1&&32; :cfg-set-rmsbdmap:2,e1,11,1,1&&32; :cfg-set-rmsattrib:2,5,8,6,600; :cfg-add-xc:0,1,1,1,0,7,1,1,0,vc4; :cfg-add-xc:0,7,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,7,1,3,0,11,1,3,0,vc4; :cfg-add-xc:0,11,1,3,0,7,1,3,0,vc4; :cfg-verify; The inter-ring services are protectable, and refer to the single multiplex section ring protection for their protection principles.

4.9 Intersected MS Protection Rings

Figure 4-7 Figure 7 Intersected MS protection rings Figure 7 illustrates the intersecting of multiplex section rings. In the two intersected points, set two MS protection groups. The pass-through configuration of the inter-ring services in the intersected points has two following types: 1)

In the principle of vicinity, select an intersected point of the two rings for inter-ring pass-through configuration. This is common configuration, because the two optical paths between the two intersected points are usually the same routes, which could break at the same time, avoiding frequent protection switchover.

2)

Configure in the same way as the circumscribed rings. Select one of the two intersected points, and configure all the inter-ring services between the two rings (acting like two circumscribed rings) to pass through this point..

3)

Refer to the related documentations for detailed analysis of intersected rings.

The configuration file illustration is not given here.

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4.10 Multiplex Section Ring Chain OSN 3500/2500 can realize ring-chain structures at various rates. To protect the ring-chain services, the rings are protected by multiplex section means. Besides, SNCP protection can also be used to protect the ring-chain services. The following illustrates the configuration of the STM-64 bi-directional MS protection ring with the STM-4 chain in the cross-connect point. Other nodes are configured in the ring or chain mode. z

Example of cross point configuration

:lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,excsa; :cfg-add-board:1&&3,ssn1sep1; :cfg-add-board:5,ssn1slq4:7&8&11&12,ssn2sl64:18,nscc; :cfg-add-xc:0,5,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,1,1,1,0,5,1,1,0,vc4; :cfg-add-xc:0,5,1,2,0,1,2,1,0,vc4; :cfg-add-xc:0,1,2,1,0,5,1,2,0,vc4; //Service from the chain to the cross-connect point, using the first vc4 and the second vc4 of Optical interface 1 in slot 5. :cfg-add-xc:0,7,1,1&&2,0,5,1,3&&4,0,vc4; :cfg-add-xc:0,5,1,3&&4,0,7,1,1&&2,0,vc4; //Service between the ring and the chain. It passes through at the cross-connect point. :cfg-add-rmspg:1,2fbi :cfg-set-rmsbdmap:1,w1,7,1,1&&32; :cfg-set-rmsbdmap:1,e1,12,1,1&&32; :cfg-set-rmsattrib:1,0,4,1,600; :cfg-verify; In addition, the tributary spanning way in the following Figure 8 is also of ring-chain networking.

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Figure 4-8 Figure 8 Tributary spanning networking

4.11 SNCP 4.11.1 Service Configuration Principles Known from Part 2 of this document “Service Generation Principle”, when SNCP is configured with the working routes of the services, the host will not automatically generate protection services, which are generated by NM according to the algorithm and then sent to the host, or the protection routes are sent to the host manually according to the ITU-T proposals. Thus, the SNCP configuration part is actually quite simple, and the complicated work is the application of the SNCP working and protection paths in the ITU-T proposals.

4.11.2 Configuration Illustration

Figure 4-9 Figure 9 Schematic diagram of the SNCP ring-chain configuration Figure 9 illustrates an SNCP ring chain, where the slots 5 and 6 of NE1 form the SNCP ring, and the slot 1 ssn1sep1 is used for loading/unloading services. The configuration illustration is as follows: 2005-3-3


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:lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,excsa:1,ssn1sep1:5&6,ssn1sl16:18,nscc; :cfg-add-sncppg:1,rvt; :cfg-set-sncpbdmap:1,work,5,1,16,0,1,1,1,0,vc4; :cfg-set-sncpbdmap:1,backup,6,1,16,0,1,1,1,0,vc4; //Select service to receive. "work" for active, "backup" for standby :cfg-set-sncppgpara:1,rvt,600; :cfg-set-sncpattrib:1,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:1,backup,b3sd&hptim&b3exc,0; :cfg-add-xc:0,1,1,1,0,6,1,16,0,vc4; :cfg-add-xc:0,1,1,1,0,5,1,16,0,vc4; //Note that this is dually-transmitted service and it is not necessary to configure the "work" and "backup" attributes for SNCP//It should be configured only for selectively receiving. :cfg-verify;

4.11.3 PP Protection Configuration PP protection is a special type of the default SNCP protection. If it is desired, just set the SNCP protection mode to the PP protection. Commands used: cfg-set-sncpprotmode: PgId, ProtMode PgId: Protection group ID, ranging from 1 to 1184. ProtMode: Protection modes, including sncp protection and pp protection. Here is the illustration: :lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,excsa:1,ssn1sep1:5&6,ssn1sl16:18,nscc;

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:cfg-add-sncppg:1,rvt; :cfg-set-sncpbdmap:1,work,5,1,16,1,1,1,0,0,vc12; :cfg-set-sncpbdmap:1,backup,6,1,16,1,1,1,0,0,vc12; //Select service to receive，"work" for active and "backup" for standby :cfg-set-sncpprotmode:1,pp :cfg-add-xc:0,1,1,1,0,6,1,16,0,vc4; :cfg-add-xc:0,1,1,1,0,5,1,16,0,vc4; :cfg-verify;

4.11.4 Working and Protection Paths in Various SNCP Networks Refer to the schematic diagrams in SNCP Networking and Service Protection Routes and the above configuration illustrations to prepare your own configuration files.

4.11.5 Configuration Notes In the SNCP configuration, one command can set multiple protection groups: :cfg-set-sncpbdmap:1&&8, work, 6, 1, 1&&8, 0 , 5, 1, 1&&8, 0, vc4; Equally, it could be split as follows: :cfg-set-sncpbdmap: 1, work, 6, 1, 1, 0, 5, 1, 1, 0, vc4; :cfg-set-sncpbdmap: 2, work, 6, 1, 2, 0, 5, 1, 2, 0, vc4 ...... :cfg-set-sncpbdmap: 8, work, 6, 1, 8, 0, 5, 1, 8, 0, vc4; OSN 3500/2500 SNCP supports 1184 protection groups.

4.12 Shared Fiber Virtual Path Protection 4.12.1 Concept of “Shared Fiber Virtual Path Protection” The shared fiber virtual path protection is to split one optical path, such as an STM-64, STM-16 or STM-4 optical path, into multiple channels in the configuration. These channels perform loop combination respectively with other links at the channel layers, and adopt various protection modes (path protection (PP), MS protection (MSP), and subnet connection protection (SNCP)) for the loops of these channel layers.

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8


11

STM-64 ADM

12

STM-64 MSP STM-64 ADM

STM-16 SNCP

STM-16 ADM

STM-64 ADM

STM-64 ADM Figure 4-10 Figure 10 Schematic diagram of shared fiber virtual path protection Figure 10 illustrates an STM-64 loop, with an STM-16 link in the middle, under the ordinary SDH loop protection. Obviously, since the STM-16 link fails to form a ring, the services on the chain could not be protected. However, from the angle of a channel loop, the optical path of STM-64 consists of four STM-16 channels in the channel structure, and it is possible to single out one STM-16 channel to form a ring with the STM-16 links. In practice, it is just as to virtualize an STM-16 half-ring in the STM-64 optical path to combine with the STM-16 link to form the STM-16 channel loop. In addition, it is feasible to set a protection mode to independently realize service transmit and protection loop functions. The original STM-64 loop continues to work independently and implement protection. The service interworking between the two loops are realized in the access node cross-connect matrix. In the STM-64 loop, the STM-64 optical path where the STM-16 channel loop is virtualized has only 3 STM-16 capacities left for the STM-64 loop. Furthermore, if the services needing loading/unloading on the STM-16 link are only n VC4s, it is workable to virtualize only a half ring with the bandwidth of n VC4s in this segment of the STM-64 optical path to combine with the corresponding n VC4s on the STM-16 link to form a channel loop with the bandwidth of n VC4s and realize independent protection. As a result, the services on the STM-64 loop that could be affected are only n VC4s. Features of the shared fiber virtual path protection The optical paths where various network holes intersect are divided logically into a combination of many channels. In the SDH equipment where various network holes intersect, the ADM mode is no longer based completely on optical paths, and could be treated as a combination of multiple channel layer ADMs. Each channel layer ADM realizes service loading/unloading and protection for the channel loop. Equipment requirements of the shared fiber virtual path protection First, the SDH equipment at a node must be able to provide multiple optical interfaces to meet complex networking requirements. Secondly, cross-connect capability must be sufficient. In complex networking, the nodes where multiple optical paths tandem may be required to virtualize several or more rings, and each ring could be a combination of different types of channels. Therefore, the SDH equipment that may serve as such a node must possess large capacity and cross-connect capability based on various levels of services. 2005-3-3


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4.12.2 Configuration Principles of “Fiber Shared Virtual Path Protection” of the OSN 3500/2500 ”Fiber Shared Virtual Path Protection” of the OSN3500/2500 equipment is available in the following modes: 1)

Define one part of VC4 on a segment of optical path in the MSP ring, and define the other part in the SNCP ring. The two parts of VC4 do not repeat each other and can provide respective protection for MSP and SNCP on the same segment of fiber, without mutual influence. This configuration actually uses the “Partial Multiplex Section” principle. In this configuration, it can be considered that there are two pairs of fiber in this span section, one for MSP protection, and the other for SNCP protection.

2)

Part of VC4 on this optical path is defined in both the MSP ring and the SNCP ring.

In this mode, this part of VC4 are under dual protection: MSP protection and SNCP protection. Please note that the SNCP ring switchover will occur twice when the shared fiber breaks. First, the SNCP ring performs SNCP switchover, and then after the MSP ring performs switchover, the SNCP detection point detects that the signals in the invalid direction become OK, so the SNCP ring switches back to this direction. This is the second switchover. Please think it over. Therefore, it is necessary to use the command “:cfg-set-sncpattrib” to set the SNCP ring switchover delay time (longer than the actual multiplex section switchover time) to prevent two successive switchovers. 200ms would be OK (with a step of 100ms). However, if you want to test the SNCP switchover time, the delay time should not be set (set delaytime to 0), otherwise the switchover time would fail to meet the standard. On the shared fiber, any combination of the MSP and SNCP protection is possible, but could not be configured for the MSP attributes simultaneously, because one optical path can only provide one pair of K byte. (For 10G optical board, one single optical interface can support two groups of multiplex section rings)

4.12.3 Configuration Illustration The intersected nodes of the two rings in Figure 10 are taken as an example: :lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,excsa:1,ssn1sep1:8&11,ssn2sl64:12,ssn1sl16:18,nscc; :cfg-add-rmspg:1,2fbi; :cfg-set-rmsbdmap:1,w1,8,1,1&&32; :cfg-set-rmsbdmap:1,e1,11,1,1&&32; :cfg-set-rmsattrib:1,3,2,4,600; 2005-3-3


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:cfg-add-sncppg:1,rvt; :cfg-set-sncpbdmap:1,work,8,1,2,0,1,2,1,0,vc4; virtual ring SNCP

//Selectively receiving of

:cfg-set-sncpbdmap:1,backup,12,1,2,0,1,2,1,0,vc4; //Selectively receiving of virtual ring SNCP :cfg-set-sncppgpara:1,rvt,600; :cfg-set-sncpattrib:1,work,b3sd&hptim&b3exc, 2; step of 100ms and the delay time is 200ms

//Set delay time in the

:cfg-set-sncpattrib:1,backup,b3sd&hptim&b3exc, 2; //Set delay time :cfg-add-xc:0,1,1,1,0,8,1,1,0,vc4; :cfg-add-xc:0,8,1,1,0,1,1,1,0,vc4; :cfg-add-xc:0,1,2,1,0,8,1,2,0,vc4; SNCP :cfg-add-xc:0,1,2,1,0,12,1,2,0,vc4; ring SNCP

//Dual transmitting of the virtual ring //Dual transmitting of the virtual

:cfg-verify;

4.13 Inter-ring Interworking Service Protection in the DNI Mode 4.13.1 Service Configuration Principles The DNI mode includes mainly interconnections between the following ring networks: SNCP ring and SNCP ring SNCP ring and MSP ring MSP ring and MSP ring For the specific working and protection service paths in the above three modes, refer to the appendix of this document SNCP Networking and Service Protection Routes. Each NE in the ring must be configured with working and protection paths according to the instructions in the appendix and in reference to the above SNCP configuration illustrations.

4.13.2 Configuration Illustration Figure 11 shows the DIN structure networking of two MSP rings. Suppose there is an inter-ring service A to H, and the service working route is “A → D → C → F → G → H”. The following shows only the A → H unidirectional service configuration illustration, and the H → A service configuration could be known in the same principle. A point: Configure services originated from A point to H point A → H; D point: Configure dual transmit routes D → C, D → E; C point: Configure the pass-through route D → F; 2005-3-3


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E point: Configure the pass-through route D → F; F point: Configure the SNCP protection group, select the signals from E point and C point for reception; G point: Configure the pass-through route F → H; H point: Configure to receive the signals from A point F → H. The basic attribute of each NE is MSP. The A, B, C and D points form a MS protection ring, and the E, F, G and H points form another MS protection ring.

Figure 4-11 Figure 11 DNI structure networking of two MSP rings The D point configuration file is as follows: (note that the configuration file is actual an A→H bi-directional service). :lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa; :cfg-add-board:6,ssn1sl16:8&11,ssn2sl64:18,nscc; //Create multiplex section ring protection group :cfg-add-rmspg:2,2fbi :cfg-set-rmsbdmap:2,w1,8,1,1&&32; :cfg-set-rmsbdmap:2,e1,11,1,1&&32; :cfg-set-rmsattrib:2,0,3,1,600; //Configure inter-ring service (for dual-transmitting) 2005-3-3


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:cfg-add-xc:0,8,1,1&&8,0,11,1,1&&8,0,vc4; :cfg-add-xc:0,8,1,1&&8,0,6,1,1&&8,0,vc4; //Other services should be configured the same as that in the two-fiber multiplex section ring. It will not be repeated here. //Set SNCP protection group (selectively-receiving) :cfg-add-sncppg:1&&8,rvt; :cfg-set-sncpbdmap:1&&8,work,11,1,1&&8,0,8,1,1&&8,0,vc4; :cfg-set-sncpbdmap:1&&8,backup,6,1,1&&8,0,8,1,1&&8,0,vc4 :cfg-set-sncppgpara:1&&8,rvt,600; :cfg-set-sncpattrib:1,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:1,backup,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:2,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:2,backup,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:3,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:3,backup,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:4,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:4,backup,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:5,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:5,backup,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:6,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:6,backup,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:7,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:7,backup,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:8,work,b3sd&hptim&b3exc,0; :cfg-set-sncpattrib:8,backup,b3sd&hptim&b3exc,0; :cfg-verify; C and E have similar services, and only the C point configurations are given here: //Install Boards ...... //Create multiplex section ring protection group :cfg-add-rmspg:2,2fbi :cfg-set-rmsbdmap:2,w1,8,1,1&&32; :cfg-set-rmsbdmap:2,e1,11,1,1&&32; :cfg-set-rmsattrib:2,1,0,2,600; //Configure the pass-through service :cfg-add-xc:0,8,1,1&&8,0,6,1,1&&8,0,vc4; :cfg-add-xc:0,6,1,1&&8,0,8,1,1&&8,0,vc4; //Verify :cfg-verify; 2005-3-3


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F point configuration file: :lognew:"szhw","nesoft"; //:per-set-endtime:15m,1990@0@0@0@0@0; //:per-set-endtime:24h,1990@0@0@0@0@0; :cfg-init-all; :cfg-set-devicetype:OptiXOsn3500,standard; :cfg-set-nename:64,"DEMO"; :cfg-add-board:9&10,gxcsa; :cfg-add-board:6,ssn1sl16:8&11,ssn2sl64:18,nscc; //Set multiplex section protection group :cfg-add-rmspg:1,2fbi :cfg-set-rmsbdmap:1,w1,8,1,1&&32; :cfg-set-rmsbdmap:1,e1,11,1,1&&32; :cfg-set-rmsattrib:1,0,3,1,600; //Set SNCP protection group :cfg-add-sncppg:1&&8,rvt; :cfg-set-sncpbdmap:1&&8,work,6,1,1&&8,0,8,1,1&&8,0,vc4; :cfg-set-sncpbdmap:1&&8,backup,11,1,1&&8,0,8,1,1&&8,0,vc4; :cfg-set-sncppgpara:1&&8,rvt,600; :cfg-set-sncpattrib:1,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:1,backup,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:2,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:2,backup,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:3,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:3,backup,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:4,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:4,backup,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:5,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:5,backup,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:6,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:6,backup,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:7,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:7,backup,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:8,work,b3sd&hptim&b3exc,100; :cfg-set-sncpattrib:8,backup,b3sd&hptim&b3exc,100; //Set dual-transmitting service 2005-3-3


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:cfg-add-xc:0,8,1,1&&8,0,6,1,1&&8,0,vc4; :cfg-add-xc:0,8,1,1&&8,0,11,1,1&&8,0,vc4; :cfg-verify;

Chapter 5 Configurations of Other Special Types of Services 5.1 Broadcast Services 5.1.1 Configuration Principles The broadcast services are on the unidirectional basis. The configuration principles of broadcast services are simple. For example, if one origin is to be broadcast to two homes, it is enough to configure two unidirectional commands, shown as follows: :cfg-add-xc: 0, 6, 1, 1, 0, 13, 1, 1, 0, vc4; :cfg-add-xc:0, 6, 1, 1, 0, 13, 1, 2, 0, vc4; After the configuration, you can check whether it is a broadcast service with the command “cfg-get-connect”, for example: CLOS-CONNECTION G1In G1 G1Out Src CC BCSUM 21 1 21 1

G2In

G2

G2Out

G3In

G3

G3Out

0

197

65535

255

65535

65535

255

65535

21

0 2

198

65535

255

65535

65535

255

65535

21

2

”BCSUM” represents the broadcast service types. The value “1” indicates non-broadcast service, “2” indicates a broadcast service with one origin and two homes, “3” indicates a broadcast service with one origin and three homes, and so on.

5.1.2 Configuration Notes There are some restrictions. Refer to the host software release notes and the descriptions in the equipment problem tree.

5.2 Concatenation Services 5.2.1 Configuration Principles If there are data boards configured in the system, it may be necessary to configure concatenation services of au4-8c to transfer 1.25G GE services. There may be other requirements in the future for configuring the concatenation services of au4-4c and au4-16c. As the telecommunication services develop, there are increasing data service applications, and some signal transmit requirements for capacities larger than 2005-3-3


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C-4 (149760Kbit) appear in the data communication services. To enable the STM-4-4C concatenation services to be transmitted by the SDH equipment, the concatenation mode is feasible. Concatenation is a process of combination, which combines multiple virtual containers to serve as a single container with bit sequence integrity due to their increased combined capacity. VC-4 concatenation is to combine X C-4 containers to form a large container to meet the requirement of large-capacity customer signal transmit beyond C-4. Concatenation is divided into adjacent concatenation and virtual concatenation. The adjacent concatenation is to use adjacent C-4 concatenations to form VC-4-Xc as an integral structure for transmission. The adjacent concatenations in the transmission travel through the same physical paths. The virtual concatenation is to combine the VC-4s (possibly in the same route or not) distributed in different STM-Ns to form a virtual large-structure VC-4-Xv for transmission. In the virtual concatenation, since the transmission of each VC-4 travels through different paths, transfer delay difference may occur between each VC-4 after reaching the home terminations. In extreme cases, the VC-4s with larger sequence numbers reach the home terminations earlier than those VC-4s with smaller sequence numbers, thus making it difficult to restore customer signals. Each circuit board can realize VC-4-4c, VC-4-8c, VC-4-16c and VC-4-64c concatenation services based on its own capacity.

5.2.2 Configuration Notes After configuring one concatenation service, the channel number in the optical interface corresponding to the next concatenation service is “previous originating channel number + concatenation level number”. In the following illustration, the first concatenation service channel number is “channel 1 of the optical interface 1 in the slot 5”, and the next successive concatenation service begins from “1+ 8”, where 8 refers to the 8 in vc4-8c.

5.2.3 Configuration Illustration :cfg-get-connect; CLOS-CONNECTION G1In Src 21 21

G1 CC

G1Out BCSUM

G2In

G2

G2Out

197 1

65535

255

65535

0 8

G3In

G3

G3Out

65535

255

65535

”CC” represents the concatenation service types. The value “1” indicates non-concatenation services, “4” indicates au4-4c services, “8” indicates au4-8c services, and “16” indicates au4-16c services.

5.3 TPS Configuration 5.3.1 Configuration Notes For E1 / T1 services The slot 1 is for a protection board, the working slot is 2&&5, and 13&&16 can realize 1:8 protection. For 34M/45M/140M/155M services The slot 2 is for a protection board. The working slot is 3&&5, realizing 1:3 protection. 2005-3-3


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The slot 16 is for a protection board. The working slot is 13&&15, realizing 1:3 protection. As long as the protection and working slots do not conflict, multiple protection groups can co-exist. The TPS protection slots can also configure extra services, which would be overlaid after switchover. For detailed configuration principles, refer to the document Protection Characteristics of the OSN3500 and 2500 Electric Interface Board Level.

5.3.2 Configuration Illustration Except for normal board creating and service configuring, TPS is configured as follows: :cfg-add-board:1&&5, ssn1pq1; :cfg-add-tpspg:1, 4; units.

//Create TPS protection group 1, with 4 work

:cfg-set-tpsbdmap: 1, 0, 1; //The slot 1 is mapped as the protection unit of the protection group 1 (fixed) :cfg-set-tpsbdmap: 1, 1, 2; //The slot 2 is mapped as the work unit 1. :cfg-set-tpsbdmap: 1, 2,.3; //The slot 3 is mapped as the work unit 2. :cfg-set-tpsbdmap: 1, 3, 4; //The slot 4 is mapped as the work unit 3. :cfg-set-tpsbdmap: 1, 4,5;

//The slot 5 is mapped as the work unit 4.

:cfg-set-tpswtrtime:1,600;

5.4 Loopback Service of This Board Apart from the normal service of configuring one circuit slot to another circuit slot, the Loopback service of this board can be configured as follows: :cfg-add-xc: 0, 3, 1, 1, 0, 3, 1, 1, 0, vc4; This configuration is allowed and applicable to some tests. For example, it could be used to locate faults section by section, and serve as the configuration for testing some indices in the acceptance test. This service configuration returns to this board after passing the ingress port and egress port of the cross-connect board. The service paths could be viewed with the command “:cfg-get-connect”.

5.5 Hardware REG 5.5.1 Attribute Settings OSN 3500/2500 supports the hardware REG. The setting method is simple, and the software REG is not supported. :cfg-set-hardreg: Bid, Pid, hardreg; parameter number = 3, with parameter modules repeated Bid slot number: OSN 3500: 40G cross-connect capacity: 1-8, 11-16; 80G cross-connect capacity: 1-8, 11-17 OSN 2500: 5-13 (non-split slots) 2005-3-3


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Pid port number: 1-X. X is determined by the type of the board installed in this slot. Hardreg

Enable Disable

5.6 Extra Services of Multiplex Sections (Linear and Ring) Extra services could be configured. Just configure them on the protection channels. In case of switchover, this part of extra services would be overlaid by the protection services.

Chapter 6 Configuration Restrictions Refer to the defect descriptions in the product publication.

2005-3-3


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Guide to Optix OSN 3500 Service and Protection Configuration

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