Create Dual Homed ELINE service

The type of ELINE service connecting the dual homed node with the primary node and the backup node, is referred to as dual homed service.

NOTE: Dual Homing for .1q/.1ad services is supported in this release. The user can create one end or both end of dual homed services. In case of .1q/.1ad service, backup node can only be on the same ring of which primary node is a part. While adding backup node, remaining nodes of the same ring will only be displayed to the user.

Perform the following steps to create an ELINE dual homed service:

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, select the Technologies as 'MPLS-TP' and Service Type as 'ELINE'.

     NOTE: The procedure explained here is for creating an MPLS service. The same procedure applies for creating a .1q/.ad service but instead of 'MPLS-TP', select '.1q/.1ad' for the parameter Technologies.

  2. 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'.

  3. Select the Dual Homing check box.
  4. Do one of the following:

     > To disable OAM on the service, select OAM as 'None' from drop down menu.

     > To enable OAM on the service, select OAM as 'BFD Config'. Select BFD Configuration parameters displayed.

     > To enable PWSM on the service, select OAM as 'Pw Status'. Select PW Status Configuration parameters displayed.

  5. Select Enable PSC check box to enable Protection State Coordination, if desired. Enter rest other details and click Next.
  6. Select Enable CFM check box to enable Connectivity Fault Management, if desired.

     

• Step 2: Adding End Points
  1. Click Add on End Points page.
  2. Under Network element column, select the desired node as 'endpoint'. This node acts as an access node. Do not select the Dual Homed check box while adding access node. 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 NEs from the Topology selection window launched. Click Done.

  3. For the selected endpoint, add UNI by selecting the desired port and do one of the following:

     > 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. The node is added on the End Points page. Ensure that the D checkbox against the Switch remains unchecked.
  5. Repeat Step a to d (Step 2: Adding End Points) to add the second endpoint. This node acts as a dual homed switch. In this instance, the Dual Homed check box will be selected by default. Also, the VLAN value remains the same as entered for the first endpoint.

  The following Figure shows the Dual Homed Primary switch and the access endpoint added.

  

  1. Click Next.

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

• Step 3: Adding Backup Nodes

  NOTE: Only one Backup is allowed per primary node.

  1. On Backup Nodes page, choose a backup Network Element for Dual-Homed Primary Network Element by clicking on Add Backup button.
  2. Under Network element column, select the desired node as the backup node.

     There are two ways of searching the desired network element as 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). Select desired NEs from the Topology selection window launched. Click Done.

  3. For the selected backup node, add Uni by selecting the desired port. The VLAN value under First Tag column will remain the same as previous.
  4. Click Add Uni. The backup switch gets added.

     

  5. Click Add Link to add an L2 trunk between the primary switch and the backup switch. The Topology Selection window is displayed.

     

     NOTE 1: There should be a single hop link between Primary and Backup Node.

     NOTE 2: In case of an ELine Dual Homed service over a single switch, the primary and backup switch are the same. Hence, no link has to be added and the Add Link button will not be present on the Backup Nodes page.

  6. Select the link between the highlighted switches and click Add Link. The Auto check box will be selected and the NNI (VLAN) value will reflect the VLAN value entered for the UNI.
  7. Click Done. Click Next on Backup Nodes page. The PseudoWires page is displayed.
• Step 4: PseudoWires

The PseudoWires page of Create Service provides the options for selection of pseudowire path manually or automatic path detection and MA configuration.

• To edit MA configuration parameters, click MA Configuration tab and select or enter the required values.
• Pseudowire path selection can be done in two ways as follows:

To find pseudowire path automatically,

1. First enable Find Path button by selecting the (Auto Path) check box. The check box will be selected by default.
2. Click Find Path. A success message is displayed. Path is found successfully.
3. Click OK and select a pseudowire endpoints (Sw1--Sw2) to view its path under the View tab.

   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 are available under Details column:

   

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

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 pseudowire path manually,

1. Un-check the (Auto Path) check box and then select the endpoints (Sw1--Sw2). The Manual Path button is displayed under the View tab.
2. Click Manual Path. The topology selection window is displayed.
3. Select the path/link connecting the two selected end points (highlighted in black) and click Add Work. The work path is added and represented in blue solid line.

   

4. To add protection path, select the path/link connecting the selected two end points (highlighted in black) and click Add Protect. The protect path is added and represented in blue dashed line.

   

5. Click Done. In case path addition fails, the partial link selection will be reset.

   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 as shown in the following figure:

   

6. Click Next.

   NOTE: An additional PW Status Info page will be displayed if OAM was selected as 'Pw Status' on General Attributes page. For more information refer to Step 4: PW Status Info in the topic Create MPLS-TP service with PWSM.

• Step 5: Advance Configuration

On Advance Configuration window, Storm Control Configuration is performed. 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 as shown in the following figure:

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.