Create MPLS-TP service with PWSM

PseudoWire Status Messaging (PWSM) enabled on a MPLS-TP service allows fault notification on that service. This service can be created on an OAM enabled tunnel only.

Perform the following steps to create a MPLS-TP service with PWSM:

1. Go to Configuration > Layer 2 > Services menu and click Complete Services option. The Complete Services page is displayed.
2. Click on . A series of new windows will be displayed for step-by step creation of a service.

• Step 1: General Attributes
  1. Enter a name for the service and select the Technologies as 'MPLS-TP'.
  2. Do one of the following:

     > To create an ELINE service, select the Service Type as 'ELINE'.

     > To create an ELAN service, select the Service Type as 'ELAN'.

  3. Do one of the following:

     > To create the service in Non Qos Domain, select the Domain as 'Non Qos Domain'.

     > To create the service in Qos Domain, select the Domain as 'Qos Domain'.

     > To create the service in any of the two domain, select the Domain as 'All Domain'.

  4. To enable PWSM on the service, select OAM as 'Pw Status'. On selection, Enable PSC check box gets disabled since Pseudowire Status and PSC cannot be enabled at the same time. Enter rest other details as desired and click Next.

     

Refer General Attributes parameters table in the topic Create MPLS-TP service for description of parameters on General Attributes page.

• Step 2: Adding End Points
  1. Click Add on End Points page to choose the end point and the UNI port for the service.
  2. Under Network element column, select the desired node as 'endpoint' followed by a UNI port.

     There are two ways of searching the desired node from the list as explained follows:

     > Enter the IP address/user label of the node in the text box provided and click (Search Node by IP Address or UserLabel). Or,

     > Click (Add switches using map view) and select desired node from the Topology selection window launched. Click Done. Note that only one node can be added at a time.

  3. Do one of the following for the selected UNI port,

     > If Domain is selected as 'Non Qos Domain' or All Domain' in General Attributes page, enter the VLAN value only. For All Domain the UNI port can be associated with TCProfile and CoS-0.

     > If Domain is selected as 'Qos Domain', enter the VLAN value and associate a Priority Mapping Profile or DSCP Mapping Profile or a pair of TCProfile and COS values.

     To view the bandwidth utilization, click View BW. View Port BW Utilization window is displayed with the bandwidth utilization details of Ingress and Egress Port.

     To view the used VLAN range, click Show Used VLans. View Used VLAN Range(s) window is displayed with a list of used VLAN values for the selected port.

  4. Click Add Uni.
  5. Similarly, repeat step a to d (of Step 2: Adding End Points) to add another endpoint to the service. The VLAN value by default will be same as entered for first UNI port while other values can be changed as desired.

     An ELine service must have two endpoints as shown in the following figure:

     

     NOTE: In case of an ELAN Service Type, more than two end points can be added and for each end point, a different VLAN value for the UNI port can be applied.

  6. Click Next. PseudoWires page is displayed.

Refer End Points parameters table in the topic Create MPLS-TP service for description of parameters on End Points page.

• Step 3: PseudoWires

The PseudoWires page of Create Service provides the options to add or remove protection, selection of pseudowire path manually or automatic path detection, and MA configuration.

• To edit MA configuration parameters, select the MA Configuration tab and select or enter the required values.
• To create an unprotected/protected pseudowire, un-select/select (Protection) check box under PseudoWires. The check box against the end points gets unchecked/checked simultaneously.
• Pseudowire path selection can be done in two ways as follows:

To find path for the pseudowire automatically,

1. Enable Find Path button by selecting (Auto Path) check box and the check box against the added end points. The check boxes will be selected by default.
2. Click Find Path. A success message is displayed. Path is found successfully. Click OK and select the pseudowire endpoint (Sw1--Sw2).

   Graphical representation of the pseudowire detected automatically is displayed under the View tab as shown in the following figure. Details of work and protect path, excluded switches and excluded tunnels is available under Details:

   

NOTE: When finding the pseudowire path automatically, the user is provided an option to exclude switches/tunnels. Select Excluded Switches and Excluded Tunnels tab. Click Add button and select the desired nodes and/links. Click Exclude Nodes or Exclude Links followed by Done. Remove button can be used to delete the added data. Select Find Path. Pseudowire path is calculated once again, excluding the selected switches/tunnels in the path.

To find path for the pseudowire manually,

1. Uncheck (Auto Path) check box and then select the added end points (Sw1--Sw2). The Manual Path button is displayed under the View tab.
2. Click Manual Path. The topology selection window is displayed.
3. There are two ways in which the pseudowire path can be added, which is explained as follows:

   (i) Direct Path Selection: This option is used for direct path selection between two end points with no intermediate nodes in between.

   Select a direct path/link between the two selected end points (highlighted in black) and click Add Work. The pseudowire path is added and the link color changes from pink to blue. If the (Protection) check box was selected on the PseudoWires page, Add Protect button will get displayed. Select another path/link between the two selected end points and click Add Protect > Done.

   

   (ii) Partial Link Selection: This option is used when the user has to add more than one link to create a pseudowire path between the two end points.

   Select the Partial Link Selection check box. Select the path/link connecting the two selected end points and click Add Links. The path/link gets highlighted in cyan color. Click Add Work. The pseudowire path is added and the link color changes from cyan to blue. To add protection, select another path/link connecting the two selected end points and click Add Links > Add Protect > Done. In case path addition fails, the partial link selection will be reset.

4. The graphical representation of the pseudowire added is displayed on the PseudoWires page under View tab along with work and protect path details under Details column. Click Next.

• Step 4: PW Status Info

The PW Status Info page of Create Service provides the option to select attachment circuits for the pseudowire end points.

1. To add an attachment circuit, select the Attachment Circuit check box against the desired pseudowire endpoint.
2. For the endpoints of the selected pseudowire, select the attachment circuit from the drop down menu and click OK to confirm. Attachment circuit added successfully message is displayed. Click OK.

   For ELAN service, repeat the two steps a and b above for adding attachment circuit to other pseudowire end points. In case if the user desires to change the added attachment circuit on a pseudowire, select that pseudowire under PW Name. The added attachment circuit will be displayed under the end points. Select another attachment circuit from the drop down menu and click OK.

3. Click Next.

• Step 5: Advanced Configuration

The Advance Configuration window is displayed when the Service Type is selected as 'ELAN'. Select the Enable Broadcast/MultiCast Stormcontrol check box if desired and then enter the BroadCast/Multicast Stormcontrol value in Mbps in the text box displayed. Click Next to view the summary of the service.

• Step 6: Summary

On Summary page of Create Service, the end points with the connecting pseudowire is displayed.

Following figure shows the summary of the ELINE service type:

1. From the drop down menu, select Create to create the service or Create and Activate to create and activate the service as desired.
2. Click Finish. Service creation command sent successfully message is displayed.
3. Click OK. The status of the service can be checked in Complete Services page.