01-16 configuring rpr services on a per-ne basis

16 Configuring RPR Services on a Per-NEBasis

About This Chapter

When configuring RPR services on a per-NE basis, you can specify the timeslot and route forservices on an individual NE basis. But, this method is of low efficiency. If the T2000 has thelicense for the end-to-end configuration function, it is recommended to use the end-to-endconfiguration function to configure services.

16.1 RPR Ring NetworkResilient packet ring (RPR) is a MAC layer technology designed for a two-fiber ring topology.RPR is used to transmit data services in an effective and reliable manner.16.2 Configuring RPR RingYou can configure RPR.16.3 Configuring RPR EVPL ServicesYou can configure EVPL services in an RPR ring network.16.4 Configuring RPR EVPLAN ServicesYou can configure EVPLAN services in an RPR ring network.

OptiX iManager T2000Operation Guide for SDH 16 Configuring RPR Services on a Per-NE Basis

Issue 01 (2007-09-15) Huawei Technologies Proprietary 16-1

16.1 RPR Ring NetworkResilient packet ring (RPR) is a MAC layer technology designed for a two-fiber ring topology.RPR is used to transmit data services in an effective and reliable manner.Currently, the three protection modes for an RPR ring network are as follows:l Wrappingl Steeringl Wrapping and steering

WrappingWhen a fault occurs on the ring, wrapping is automatically performed on the node near the failurepoint. That is, Ring 0 and Ring 1 are connected. Wrapping has a short response time, whichlessens frame loss when a fault occurs, but occupies more bandwidth.Figure 16-1 and Figure 16-2 illustrate the situations before a fiber cut and after wrapping isperformed. The thick line indicates the normal route, and the thin line indicates the protectionroute.

Figure 16-1 Traffic flow before a fibre cut

Figure 16-2 Traffic flow after a fibre cut

SteeringWhen a fault occurs somewhere on the ring, the protection information including the failurepoint and fault type is sent to each node, and the topology also changes correspondingly. The

16 Configuring RPR Services on a Per-NE BasisOptiX iManager T2000

Operation Guide for SDH

16-2 Huawei Technologies Proprietary Issue 01 (2007-09-15)

source node only needs to send data to the destination node according to the new topology. Thesmall part of data that has been sent is discarded at the failure point. Steering effectively improvesutilization of ring bandwidth and allows signals to be transmitted on the best route. However, ittakes a longer time to trigger the switching process, and a new route needs to be decidedaccording to the new topology after the topology becomes stable.Figure 16-3 and Figure 16-4 illustrate the situations before a fiber cut and after steering isperformed. The thick line indicates the normal route, and the thin line indicates the protectionroute.

Figure 16-3 Traffic flow before a fibre cut

Figure 16-4 Traffic flow after a fibre cut

Wrapping and SteeringWrapping triggers the switching process in a short time. Hence, loss of frame can be effectivelyprevented after a fault occurs. But, more ring bandwidth is required for this protection mode.Steering effectively improves the utilization of ring bandwidth and allows signals to betransmitted on the best route. However, it takes a longer time to trigger the switching process,and a new route needs to be decided according to the new topology after the topology becomesstable. In this process, wrapping is first performed to avoid loss of packets, and steering is thenperformed after the topology becomes stable. In this way, the time during which services areinterrupted is less than or equal to 50ms.

16.2 Configuring RPR RingYou can configure RPR.



PrerequisiteYou must be an NM user with "NE and network operator" authority or higher.

ProcedureStep 1 In the NE Explorer, select a board and choose Configuration > RPR Management > Topology

Management from the Function Tree. Click the Local Node Information tab.Step 2 Set protection parameters, such as Protection Slow Timer Value (ms), ATD Timer Value

(s), Protection Mode, Hold-off Time(ms), Protection Restoration Mode and ProtectionWait-To-Restore(s).

NOTE

Each node in the same RPR must be set to the same protection mode.

Step 3 Click Apply.----End

16.3 Configuring RPR EVPL ServicesYou can configure EVPL services in an RPR ring network.

1. 16.3.1 Configuring RPR Topology InformationYou can configure the RPR topology information.

2. 16.3.2 Setting Port Attributes and Bound Paths for an Ethernet BoardYou need to set the port attributes and bound paths for an Ethernet board prior to creatingEthernet services.

3. 16.3.3 Creating Cross-Connections Between an Ethernet Board and a Line BoardThe cross-connections between an Ethernet board and a line board carry Ethernet services.Hence, you need to create cross-connections between the Ethernet board and the line boardprior to creating Ethernet services.

4. 16.3.4 Creating RPR EVPL ServicesYou can create RPR EVPL services.

16.3.1 Configuring RPR Topology InformationYou can configure the RPR topology information.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l Applies to the EMR0 and EGR2 boards.




Context

CAUTIONIf you change the RPR node ID, the RPR protocol is restarted and the RPR services areinterrupted.


Management from the Function Tree. Click the Local Node Information tab.Step 2 Complete the information of the local node, such as Node ID and Node Name.Step 3 To enable the RPR protocol, set RPR Protocol to Enabled.Step 4 Set protection parameters, such as Protection Slow Timer Value (ms), ATD Timer Value

(s), Protection Mode, Hold-off Time (ms), Protection Restoration Mode and ProtectionWait-To-Retore (s).

NOTE

In the same RPR ring, set the same value in the Protection Mode field.

Step 5 Click Apply and click Close in the Operation Result dialog box.Step 6 Click the Link Information tab. Configure link parameters, such as Send link weight, Used

bandwidth of priority A (Mbps), Reserved bandwidth of priority A (Mbps) and Usedbandwidth of priority B-CIRs (Mbps).

Step 7 Click Apply and click Close in the Operation Result dialog box.----End

16.3.2 Setting Port Attributes and Bound Paths for an EthernetBoard

You need to set the port attributes and bound paths for an Ethernet board prior to creating Ethernetservices.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l The Ethernet board and Ethernet interface board must be created.

ProcedureStep 1 Configure the external port of a board. For details, refer to Configuring External Ports.Step 2 Configure the internal port of a board. For details, refer to Configuring Internal Ports.Step 3 Configure the binding path of a board. For details, refer to Configuring Binding Path.

----End



16.3.3 Creating Cross-Connections Between an Ethernet Board anda Line Board

The cross-connections between an Ethernet board and a line board carry Ethernet services.Hence, you need to create cross-connections between the Ethernet board and the line board priorto creating Ethernet services.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l For release 4.0 NEs, including the OptiX 155/622H (Metro 1000), the OptiX 155/622

(Metro 2050), the OptiX 2500+ (Metro 3000), the OptiX Metro 3100 and so on, theprotection subnet must be created.

l The Ethernet processing board and the Ethernet interface board must be installed.

ProcedureStep 1 In the NE Explorer, select an NE and choose Configuration > SDH Service Configuration

from the Function Tree.Step 2 Click Create and the Create SDH Service dialog box is displayed.Step 3 Create the cross-connection between the Ethernet and the line boards.

NOTECreate the VC12, VC3 or VC4 cross-connection as required.

Step 4 Click Apply or OK. ----End

16.3.4 Creating RPR EVPL ServicesYou can create RPR EVPL services.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l The RPR topology information must be configured.l The port attributes and bound path must be configured for an Ethernet board.l The cross-connections between the Ethernet board and the line board must be created.l Applies to the EMR0 and EGR2 Ethernet boards.

ProcedureStep 1 In the NE Explorer, select a board and choose Configuration > Ethernet Service > Ethernet

Line Service from the Function Tree.Step 2 Click New and the Create Ethernet Line Service dialog box is displayed.Step 3 Complete the information of the EVPL service such as Service Type, Direction, Source Port

and other parameters.




NOTE

l For the EVPL service that is transmitted on the RPR ring, the source and the sink ports can only be ofthe PORT or RPR type.

l The port attributes for the RPR port must be P, and the encapsulation format is MartinioE. For N2series RPR boards, you can set their encapsulation format to stack VLAN.

l If the port attributes for the PORT port is P, the encapsulation format can only be MartinioE. For N2series RPR boards, you can set their encapsulation format to stack VLAN.

l The Sink Node parameter is specific to RPR rings, which is used to identify the destination node ofthis EVPL service on the RPR ring.

Step 4 Click OK and click Close in the Operation Result dialog box.----End

16.4 Configuring RPR EVPLAN ServicesYou can configure EVPLAN services in an RPR ring network.



1. 16.4.1 Configuring RPR Topology InformationYou can configure the RPR topology information.

2. 16.4.2 Setting Port Attributes and Bound Paths for an Ethernet BoardYou need to set the port attributes and bound paths for an Ethernet board prior to creatingEthernet services.

3. 16.4.3 Creating Cross-Connections Between an Ethernet Board and a Line BoardThe cross-connections between an Ethernet board and a line board carry Ethernet services.Hence, you need to create cross-connections between the Ethernet board and the line boardprior to creating Ethernet services.

4. 16.4.4 Creating RPR EVPLAN ServicesYou can configure RPR EVPLAN services on a per-NE basis.

5. 16.4.5 Creating the VLAN Filtering TableYou can create the VLAN filtering table.

16.4.1 Configuring RPR Topology InformationYou can configure the RPR topology information.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l Applies to the EMR0 and EGR2 boards.

Context

CAUTIONIf you change the RPR node ID, the RPR protocol is restarted and the RPR services areinterrupted.


Management from the Function Tree. Click the Local Node Information tab.Step 2 Complete the information of the local node, such as Node ID and Node Name.Step 3 To enable the RPR protocol, set RPR Protocol to Enabled.Step 4 Set protection parameters, such as Protection Slow Timer Value (ms), ATD Timer Value

(s), Protection Mode, Hold-off Time (ms), Protection Restoration Mode and ProtectionWait-To-Retore (s).

NOTE

In the same RPR ring, set the same value in the Protection Mode field.

Step 5 Click Apply and click Close in the Operation Result dialog box.




Step 6 Click the Link Information tab. Configure link parameters, such as Send link weight, Usedbandwidth of priority A (Mbps), Reserved bandwidth of priority A (Mbps) and Usedbandwidth of priority B-CIRs (Mbps).

Step 7 Click Apply and click Close in the Operation Result dialog box.----End

16.4.2 Setting Port Attributes and Bound Paths for an EthernetBoard

You need to set the port attributes and bound paths for an Ethernet board prior to creating Ethernetservices.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l The Ethernet board and Ethernet interface board must be created.

ProcedureStep 1 Configure the external port of a board. For details, refer to Configuring External Ports.Step 2 Configure the internal port of a board. For details, refer to Configuring Internal Ports.Step 3 Configure the binding path of a board. For details, refer to Configuring Binding Path.

----End

16.4.3 Creating Cross-Connections Between an Ethernet Board anda Line Board

The cross-connections between an Ethernet board and a line board carry Ethernet services.Hence, you need to create cross-connections between the Ethernet board and the line board priorto creating Ethernet services.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l For release 4.0 NEs, including the OptiX 155/622H (Metro 1000), the OptiX 155/622

(Metro 2050), the OptiX 2500+ (Metro 3000), the OptiX Metro 3100 and so on, theprotection subnet must be created.

l The Ethernet processing board and the Ethernet interface board must be installed.

ProcedureStep 1 In the NE Explorer, select an NE and choose Configuration > SDH Service Configuration

from the Function Tree.Step 2 Click Create and the Create SDH Service dialog box is displayed.Step 3 Create the cross-connection between the Ethernet and the line boards.



NOTECreate the VC12, VC3 or VC4 cross-connection as required.

Step 4 Click Apply or OK. ----End

16.4.4 Creating RPR EVPLAN ServicesYou can configure RPR EVPLAN services on a per-NE basis.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l The RPR topology information must be configured.l The port attributes and bound path must be configured for an Ethernet board.l The cross-connections between the Ethernet board and the line board must be created.l Applies to the EMR0 and EGR2 Ethernet boards.


LAN Service from the Function Tree.Step 2 Click New and the Create Ethernet LAN Service dialog box is displayed.Step 3 Complete the information of the EVPLAN service. Enter a VB Name, and select the Bridge

Switch Mode.Step 4 Click Configure Mounted Port and the VB Mount Port Configuration dialog box is

displayed. Select a port in the Available Mounted Ports pane and click .




NOTE

l The options for Mount Port are PORT port and RPR port.l The Port Type of the PORT port can be P or PE.l The Port Type of the RPR port must be P. The encapsulation format of the RPR port can be only stack

VLAN.

Step 5 Click OK and click Close in the Operation Result dialog box.----End

16.4.5 Creating the VLAN Filtering TableYou can create the VLAN filtering table.

Prerequisitel You must be an NM user with "NE and network operator" authority or higher.l The port attributes and bound path must be configured for an Ethernet board.l The cross-connections between the Ethernet board and the line board must be created.l The EVPLAN services must be created.


LAN Service from the Function Tree. Click the VLAN tab.Step 2 Click New and the Create VLAN dialog box is displayed.



Step 3 Enter the information of the VLAN. Specify a VLAN ID, and select the appropriate ports asforwarding ports.

Step 4 Click OK. Click Close in the Operation Result dialog box.----End




16 Configuring RPR Services on a Per-NE Basis16.1 RPR Ring Network16.2 Configuring RPR Ring16.3 Configuring RPR EVPL Services16.3.1 Configuring RPR Topology Information16.3.2 Setting Port Attributes and Bound Paths for an Ethernet Board16.3.3 Creating Cross-Connections Between an Ethernet Board and a Line Board16.3.4 Creating RPR EVPL Services

16.4 Configuring RPR EVPLAN Services16.4.1 Configuring RPR Topology Information16.4.2 Setting Port Attributes and Bound Paths for an Ethernet Board16.4.3 Creating Cross-Connections Between an Ethernet Board and a Line Board16.4.4 Creating RPR EVPLAN Services16.4.5 Creating the VLAN Filtering Table

01-16 configuring rpr services on a per-ne basis

Documents

rpr services

fiber ring

rpr ringyou

data services

rpr evplan servicesyou

rpr evpl servicesyou

traffic flow

normal route