Stitching Two E-Line Pseudowires
A multi-segment pseudowire (MS-PW) is a static or dynamically configured set of two or more contiguous pseudowire segments that behave and function as a single E-Line pseudowire. Each end of an MS-PW, by definition, terminates on a T-PE.
Pseudowires are deployed in large networks. Such networks typically encompass hundreds or thousands of aggregation devices at the edge, each of which would be a provider edge (PE). These networks can be partitioned into separate metro and core pseudowire domains, with multi-segment pseudowires connecting endpoints across the various domains. You can stitch two E-Line pseudowires.
To stitch two E-Line pseudowires:
- Create an E-Line service definition.
In the General tab, you must select the Enable Multi Segment Pseudowire check box to enable multi-segment pseudowire.
For more information on creating an E-Line service definition, see Creating an E-Line Service Definition.
- Create an E-Line service order.
The fields displayed in the E-Line service order are based on the E-Line service definition that you created in Step 1. In the second endpoint settings page, select an interworking (iw) interface and specify the stitching unit.
For more information on creating an E-Line service order, see Creating an E-Line Service Order.
- Deploy the E-Line service order.
Click the Deploy icon in the Service View of the Connectivity Services Director banner. The functionalities that you can configure in this mode are displayed in the task pane. From the Network Services > Connectivity task pane, select Service Provisioning > Deploy Services.
The Manage Network Services page is displayed in the top part of the right pane, which displays all of the configured services. The Manage Service Orders page is displayed in the bottom part of the right pane, which displays all of the service orders associated with a service.
In the Manage Service Orders page, select the E-Line service order you created in Step 2.
Select the Deploy now option button at the top of the page and click OK.
The service order is deployed.
- In the Manage Services inventory page, select the check
box next to the E-Line service that you created and select Actions > Stitch PW Segment. The Stitch PW Segment inventory
page is displayed.
The Stitch PW Segment inventory page lists only the E-Line service definitions with the Enable Multi Segment Pseudowire check box enabled. This inventory page must also list the E-Line service definition you created in Step 1.
- In Build mode of Service View, from the Manage Service Definitions page, select an E-Line service definition and click Next.
- Specify the General Setting, Connectivity Settings, and
Endpoints details. For more information on these fields, see Creating an E-Line Service Order.
The fields of the first endpoint are auto-filled. Notice that the second endpoint fields of the service order you created in Step 2 and the first endpoint fields of this service order are same.
- Deploy the stitched service order.
In the Manage Service Orders page, select the E-Line service order you created in Step 6.
Select the Deploy now option button at the top of the page and click Ok.
The service order is deployed.
The two E-Line pseudowires are stitched.
The Manage Services lists both services. The E-Line Service Details window displays the Stitch PW Segment details.
The number of pseudowire segments that you can stitch is limited to two.
You can perform a functional audit to the first service only. You can view the details of the stitched pseudowire in the Functional Audit Results window.