06 Configuring Protection

OptiX iManager T2000 Operation Manual for SDH Contents

Huawei Technologies Proprietary

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Contents

6 Configuring Protection 6-1

6.1 Configuring 1+1 Unit Protection 6-2

6.2 Configuring TPS Protection 6-3

6.3 Configuring MSP Protection 6-5

6.3.1 Creating Two-Fiber MS SPRing 6-5

6.3.2 Creating Two-Fiber MS DPRing 6-9

6.3.3 Creating Four-Fiber MS SPRing 6-11

6.3.4 Creating 1+1 Linear MSP 6-14

6.3.5 Creating M:N Linear MSP 6-17

6.4 Configuring SNCP Protection 6-20

6.5 Configuring PP Protection 6-22

6.5.1 Creating Diverse Route PP 6-22

6.5.2 Creating Uniform Route PP 6-24

6.6 Configuring DNI Protection 6-26

6.7 Configuring Non-Protection Ring 6-29

6.8 Configuring Non-Protection Chain 6-32

6.9 Deleting Protection Subnet 6-35

OptiX iManager T2000 Operation Manual for SDH 6 Configuring Protection


6-1

6 Configuring Protection This chapter introduces how to configure equipment protection and protection subnet. The following tasks are described:

Configuring 1+1 Unit Protection

Configuring TPS Protection

Configuring MSP Protection

Configuring SNCP Protection

Configuring PP Protection

Configuring DNI Protection

Configuring Non-Protection Ring

Configuring Non-Protection Chain



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6.1 Configuring 1+1 Unit Protection

Purpose

Use this procedure to set the protection relations for the cross-connect and clock units of the SDH equipment, and the active/standby unit protection switching as well, in order to realize hot backup function in case of unit fault.

Prerequisites

NM user with the authority of "system operator" or above.

The cross-connect or clock unit with right protection matching relation has been installed in the protection slot.

Procedure

Step Action 1 Select [Configuration/SDH Configuration/Board 1+1 Hot Standby]

from the Main Menu.

2 In the lower-left pane, select the appropriate NE and click the double-right-arrow button (red).

3 Click to query the current active/standby status of the equipment from the NE.

4 Set the active/standby relation.

First select the active unit, and the standby unit will appear automatically.

5 Click .



6-3

6.2 Configuring TPS Protection

Purpose

Use this procedure to set the tributary protection parameters of the SDH equipment and tributary protection switching.

Prerequisites

NM user with the authority of "system maintainer" or above.

The tributary unit with right protection matching relation has been installed in the protection slot.

Procedure

Step Action 1 Select [Configuration/SDH Configuration/TPS Protection] from the

Main Menu.

2 In the lower-left pane, select the appropriate NE and click the double-right-arrow button (red).

3 Click to open the dialog box.

4 Select the protection switching pair to be set.



6-4

Step Action 5 Set the switching priorities of the protected switching pair.

6 Click .



6-5

6.3 Configuring MSP Protection

6.3.1 Creating Two-Fiber MS SPRing

Purpose

Use this procedure to create the Two-Fiber MS shared protection ring protection subnet.

Prerequisites


NE data has been configured, and fibers have been correctly created.

Procedure

Step Action 1 Select [View/Protection View] from the Main Menu.

2 Select [Protection Subnet/Create/2f_MS SPRing]. The "2f_MS SPRing" wizard is displayed.

3 Enter the name of the protection subnet.

The default name is usually used, for example: 2f_MS SPRing_2.

4 Select the capacity level of the protection subnet.

For example: STM-4.

5 Select "Assigned by VC4" and "Resource Sharing" as required.

Note: 1) The resource sharing means that a physical resource may belong to two protection subnets. If it is necessary to create multiple protection subnets on a single fiber, the resource sharing is necessary to be set for and from the second protection subnet.

2) Assigned by VC4 into different protection subnets. To divide the resources by VC4 into different protection subnets is to implement the virtual optical path protection. It means that part of the VC4s in the fiber can be put into one protection subnet. For example, for one STM-16 fiber, the VC4s 1~4 belong to an STM-4 MSP, while VC4s 5~8 belong to a PP.



6-6

Step Action 6 Select the nodes contained in the protection subnet to be created.

Double-click the NE in the Protection View and add it into the node list on the lower-left. Meanwhile, is displayed on the NE icon.

You can double-click the selected NE again to cancel it.

Note: The nodes must be added into a MSP protection subnet in sequence in the direction of the main ring.

7 Set the attribute of respective nodes.

Select "MSP Node" here.



6-7

Step Action 8 Click . The link selection of the creation wizard is displayed.

Note: 1) If there are multiple fiber cables between two NEs, you can make selections in the list box to specify "Physical Link Information".

2) In case of "Assigned by VC4", according to the rule of MSP, VC-4s in the second half part of each fiber protect those in the first half part. For example, in an STM-16 fiber, the 9th VC-4 protects the 1st VC-4.

3) As K1 and K2 bytes are needed for transferring information for the MSP, the first timeslot must be allocated to the MSP subnet. Moreover, there should be only one MSP subnet in one fiber.

9 Click to send the configurations.

The created protection subnet is displayed in the protection view.

10 Right-click the protection subnet and select [Protection Subnet Attributes].

11 Click the Protection Subnet Maintenance tab. Select all the NEs of the protection subnet. Right-click them and select [Start/Stop Protocol/Start]. Make sure that all the "Protocol Controller" columns are in Protocol Started status.



6-8

Step Action 12 Click the Protection Subnet Parameters tab and set the WTR Time

as required. The WTR time of all NEs in the same protection subnet should be the same.

For example, the default is 600 seconds.



6-9

6.3.2 Creating Two-Fiber MS DPRing

Purpose

Use this procedure to create the Two-Fiber MS dedicated protection ring protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/2f_MS DPRing]. The "2f_MS DPRing" wizard is displayed.


The default name is usually used, for example: 2f_MS DPRing_1.


For example: STM-4.

5 Select the nodes contained in the protection subnet to be created.


Double-click the selected NE again to cancel it.




6-10

Step Action 6 Set the attribute of respective nodes.

Select "MSP Node" here.

7 Click . The link selection of the creation wizard is displayed.







6-11




6.3.3 Creating Four-Fiber MS SPRing

Purpose

Use this procedure to create the Four-Fiber MS shared protection ring protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/4f_MS SPRing]. The "4f_MS SPRing" wizard is displayed.


The default name is usually used, for example: 4f_MS SPRing_1.


For example: STM-16.



6-12

Step Action 5 Select "Assigned by VC4" and "Resource Sharing" as required.









6-13


Note: 1) If there are multiple fiber cables between two NEs, you can make selections in the list box to specify "Physical Link Information".

2) In case of "Assigned by VC4", according to the rule of MSP, VC-4s in the second half part of each fiber protect those in the first half part. For example, in an STM-16 fiber, the 9th VC-4 protects the 1st VC-4.

3) As K1 and K2 bytes are needed for transferring information for the MSP, the first timeslot must be allocated to the MSP subnet. Moreover, there should be only one MSP subnet in one fiber.






6-14

Step Action 10 Click the Protection Subnet Maintenance tab. Select all the NEs of

the protection subnet. Right-click them and select [Start/Stop Protocol/Start]. Make sure that all the "Protocol Controller" columns are in Protocol Started status.

11 Click the Protection Subnet Parameters tab and set the WTR Time as required. The WTR time of all NEs in the same protection subnet should be the same.

For example, the defaut is 600 seconds.

6.3.4 Creating 1+1 Linear MSP

Purpose

Use this procedure to create the 1+1 Linear MSP protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/1+1 MSP]. The 1+1_MSP wizard is displayed.



6-15

Step Action 3 Enter the name of the protection subnet.

The default name is usually used, for example: 1+1_MSP_1.



5 Select "Revertive Mode" and "Switching Mode" as required.

For example, select "Revertive" and Single-Ended Switching.

Note: 1) Revertive Mode refers to the handling strategy adopted after the faulty line resumes to normal.

2) Switching Mode refers to the switching strategy adopted after fault occurs to the line.

3) Single-ended switching: The switching happens at the receive end when the receive end goes faulty. Or the switching happens at the transmit end when the transmit end goes faulty. In this way, the service is protected.

4) Dual-ended switching: The switching happens at the receive and transmit ends when either end goes faulty to protect the service.






6-16


Select the working link and protection link.







6-17




6.3.5 Creating M:N Linear MSP

Purpose

Use this procedure to create the M:N Linear MSP protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/M:N MSP]. The M:N MSP wizard is displayed.


The default name is usually used, for example: M:N _MSP_1.





6-18

Step Action 5 Select the number of working links as required, which is the N

value.

In this example,

M is the number of protection link. The M is 1 only.

N is the number of working links.




7 Click . The link selection of the creation wizard is displayed. Select the working link and protection link.






6-19

Step Action 10 Click the Protection Subnet Maintenance tab. Select all the NEs of

the protection subnet. Right-click them and select [Start/Stop Protocol/Start]. Make sure that all the "Protocol Controller" columns are in Protocol Started status.

11 Click the Protection Subnet Parameters tab and set the WTR Time as required. The WTR time of all NEs in the same protection subnet should be the same.




6-20

6.4 Configuring SNCP Protection

Purpose

Set the SNCP node on the protection subnet to support the SNCP of different protection subnets. The SNCP node can support the dual-fed and selectively receive, thus implementing sub-network connection protection.

Generally, the incoming point and the outgoing point are created as the SNCP nodes.

It is a kind of service-level protection. The principle is based on dual-fed at incoming point and selectively receiving at the outgoing point.

Note: You need to create SNCP node only when the NE software (the software of system control unit) is 4.0 version. Refer to 4.7 Viewing Unit Version.

Prerequisites


Protection subnet has been created on the T2000.



6-21

Procedure


2 Right-click the NE to be created as the SNCP node, and select [Create SNCP Node/CreateSNCP Nod] (. . . refers to the name of the protection subnet of this NE).

If the creation is successful, the prompt message Creating SNCP independent node succeeded. is displayed. Otherwise, the failure prompt is displayed.



6-22

6.5 Configuring PP Protection

6.5.1 Creating Diverse Route PP

Purpose

Use this procedure to create the Two-Fiber Diverse Route PP protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/PP (Diverse Route)]. The Create PP (Diverse Route) wizard is displayed.


The default name is usually used, for example: PP (Diverse_Route)_1.


For example: STM-4.






6-23





Select "PP Node" here.






6-24

6.5.2 Creating Uniform Route PP

Purpose

Use this procedure to create the Two-Fiber Uniform Route PP protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/PP (Uniform Route)]. The Create PP (Uniform Route) wizard is displayed.


The default name is usually used, for example: PP (Uniform_Route)_2.


For example: STM-4.






6-25





Select "PP Node" here.






6-26

6.6 Configuring DNI Protection

Purpose

DNI is shorted for the Dual Node Interconnection.

By creating the DNI protection subnet at the interworking nodes of the two rings, the protection of the interworking service between two ring networks can be realized though the network is composed of different vendors' equipment or in different protection modes. Here is an example of how to create DNI protection, as shown below:

NE1 NE4

NE2 NE3

Two-fiber MS SPRING_1

NP CHAIN_1

NP CHAIN_2

NE6 NE7

NE5 NE8

Two-fiber PP RING_1

Note: Creation of the DNI nodes: NE3 (master) with NE4 (slave) as well as NE5 (master) NE6 (slave).

Prerequisites



Two protection subnets of the DNI protection have been created.

Procedure


2 Select [Protection Subnet/Create/DNI]. The Create DNI wizard is displayed.


The default name is usually used, for example: DNI_1.



6-27

Step Action 4 Double-click the icons of NE3 and NE4 in the view, and select them

as the master and slave nodes respectively for the DNI protection.

5 Click to select the affiliated protection subnet.

Select the affiliated protection subnet in the protection subnet list: 2f-MS-SPRING_1.



6-28

Step Action 6 Click to send the configuration.

Note: On a protection ring, the node selected first is the master node and the second one is the slave node. When the master node or the slave node is selected in the protection view, the flag appears on its icon.

7 Repeat step 2 to 6 in the same method to create the master node and the slave node: NE5 and NE6.



6-29

6.7 Configuring Non-Protection Ring

Purpose

Use this procedure to create the Non-Protection Ring protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/NP Ring]. The Create NP Ring wizard is displayed.


The default name is usually used, for example: NP_Ring_1.


For example: STM-4.



6-30










6-31

Step Action 8 Click to send the configurations.




6-32

6.8 Configuring Non-Protection Chain

Purpose

Use this procedure to create the Non-Protection Chain protection subnet.

Prerequisites



Procedure


2 Select [Protection Subnet/Create/NP Chain]. The Create NP Chain wizard is displayed.


The default name is usually used, for example: NP_Chain_1.





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Step Action 8 Click to send the configurations.




6-35

6.9 Deleting Protection Subnet

Purpose

Use this procedure to delete created protection subnets.

Note: If you want to delete a protection subnet which has been configured service, you need to delete the service first.

Prerequisites


Make sure the protection subnet to delete has no any service.

Procedure

Method 1: Step Action 1 Select [View/Protection View] and select [Protection

Subnet/Protection Subnet Management] in the protection view.



6-36

Step Action 2 Select protection subnets to delete, right-click it and select [Delete

from the NM] or [Deleted from the NE].

Note: You can delete a protection subnet in one of the three manners below:

1) [Delete from the NM]: Delete relation between the protection subnet and logical systems at the NE side, to allow deleting fibers, re-uploading, and so on. This command is not delivered to the NE and is not service-affecting. The deleted protection subnet can be located by the searching feature. And the T2000 will locate it according to the NE layer protection information.

2) [Delete from the NE]: Delete the protection subnet, logical systems at the NE side and all traffic in the protection subnet. The deleted protection subnet cannot be restored without being created again.

3) [Delete All from the NM]: Delete data other than fiber in the network layer. Search the deleted protection subnet can be located by the searching feature. It is not recommended because this option would delete a large number of data. Choose this option with care.

3 Click to delete the protection subnet.

Method 2: Step Action 1 Select protection subnets to delete.



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Step Action 2 Select the protection subnet to delete, right-click it and select

[Delete Protection Subnet].

3 Click to delete the protection subnet.

06 Configuring Protection

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