Determine the VCGs at each terminating end (source and sink) of the circuit being provisioned.

For example:

• Figure 11-36, UPSR Ring Add/Drop cross-connections illustrates a path protected ring network with STS1 cross-connections for Ethernet service. In this example, VCG v3 at Node 1 and VCG v3 at Node 2 serve as the source/sink and sink/source for LCAS provisioning.

  Enabling LCAS requires that LCAS be Enabled for v3 at each terminating node.

  Adding tributaries requires that LCAS be Enabled, cross-connections made, and VCG membership enabled for each of the tributaries at the source and sink.

  Removing tributaries requires a distinct order of removal: Disable local source tributary, disable remote source and sink tributaries, disable local sink tributary. In this example, you would Disable the source (Input Membership) at VCG v3 at Node 1; Disable the source (Input Membership) and sink (Output Membership) at VCG v3 at Node 2; then Disable the sink (Output Membership) at VCG v3 at Node 1. Cross-connections for the disabled tributaries may then be removed as required.

• Figure 11-37, Multipoint cross-connections on a UPSR illustrates a ring network with multipoint STS1 cross-connections for Ethernet service. In this example, there are three separate links relating to LCAS provisioning. Note that at each add/drop node (Node A, Node C, and Node B), two separate VCGs (v1 and v2) serve as both source and sink for LCAS provisioning.

  Enabling LCAS requires that LCAS be Enabled for both v1 and v2 at each terminating node.

  Adding tributaries requires that LCAS be Enabled, cross-connections made, and VCG membership enabled for each of the tributaries at all sources and sinks.

  Removing tributaries requires a distinct order of removal: Disabling local source tributary, disabling remote source and sink tributaries, disabling local sink tributary. In this example, each individual link is treated separately. For example, in the link from Main 1 at Node A to Main 2 at Node B, you would Disable the source (Input Membership) at VCG v1 at Node A; Disable the source (Input Membership) and sink (Output Membership) at VCG v2 at Node B; then Disable the sink (Output Membership) at VCG v1 at Node A. Then, repeat the sequence for the link from Node B v1 to Node C v2, then from Node C v1 to Node A v2.

ENABLE/DISABLE LCAS FOR SELECTED VCGs

Determine the VCGs at each end (source and sink) of the circuit being provisioned.

Use the WaveStar^® CIT to log in to the Alcatel-Lucent 1665 DMXtend shelves.

Reference:

Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar^® CIT session

Use the Configuration → Equipment command from the System View menu, select the circuit pack, then select the VCG port being provisioned. Click Select.

Important!

Changing between LCAS-Enabled to LCAS-Disabled on an in-service VCG may not be hitless.

Click on the LCAS tab. Provision the LCAS parameters, as required. Or, use the ed-vcg TL1 command to provision the LCAS parameters.

LCAS parameters:

• LCAS Mode: ENABLE (default) or DISABLE LCAS on the specified VCG.

• Hold-Off Timer (in milliseconds): Specifies the delay time between when a tributary is detected faulty and when it is automatically removed from the VCG.

• Wait-To-Restore (in seconds): Specifies the delay time between when a previously removed tributary is detected to be normal and when it is automatically returned to the VCG.

LCAS and non-LCAS interworking is supported but the change between LCAS enabled/disabled and LCAS disabled/enabled may not be hitless.

Reference:

Procedure 11-9: Provision VCG parameters

Repeat from Step 4 for each VCG port being provisioned.

END OF STEPS TO ENABLE OR DISABLE LCAS.

ADDING TRIBUTARIES

Use the WaveStar^® CIT to log in to the Alcatel-Lucent 1665 DMXtend shelf, as required.

Reference:

Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar^® CIT session

Make all required pass-through and add/drop cross-connections, if not already performed.

The cross-connections providing transmission between the Source and Sink VCGs can occur at any time. Similarly the Source and Sink can be activated in any order. Only when all components are in place and enabled does the tributary member get added. Tributaries may be enabled (default) when the cross-connections are made or disabled and then enabled at a later time.

Procedure 11-15: Make cross-connections for Ethernet service

END OF STEPS FOR ADDING TRIBUTARIES.

ENABLING TRIBUTARIES

Use the WaveStar^® CIT to log in to the Alcatel-Lucent 1665 DMXtend shelf, as required.

From the System View menu, use the Configuration → Equipment command from the System View menu, select the Ethernet circuit pack, select the VCG port, then select the tributary (Trib) being provisioned. Click Select.

Or, use the ed-vcgtrib TL1 command to provision parameters.

In the Tributary provisioning screen, select Enabled for the VCG Membership for both the Input (Source) and Output Direction (sink).

When Input VCG Membership (source) (inmbs) is enabled, the VCG tributary is a member of the VCG in the source direction (towards the SONET network). When Output VCG Membership (sink) (outmbs) is enabled, the VCG tributary is a member of the VCG in the sink direction (away from the SONET network).

Repeat from Step 10 to Enable Membership for each Tributary at each VCG in each add/drop node in the configuration.

In a multipoint configuration, it is suggested that tributary membership be added at both ends on one link before moving to the next link.

END OF STEPS FOR ENABLING TRIBUTARIES.

NOTICE Service-disruption hazard

Service hits may occur if the proper sequence is not followed when removing tributaries from an LCAS enabled system.

REMOVING TRIBUTARIES

Use the WaveStar^® CIT to log in to the near-end Alcatel-Lucent 1665 DMXtend shelf, as required.

Reference:

Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar^® CIT session

From the System View menu, use the Configuration → Equipment command from the System View menu, select the Ethernet circuit pack, select the VCG port, then select the tributary (Trib) being removed. Click Select.

Or, use the ed-vcgtrib TL1 command to provision parameters.

In the Tributary provisioning screen, select Disabled for the VCG Membership for the Input Direction (Source).

Use the WaveStar^® CIT to log in to the far-end Alcatel-Lucent 1665 DMXtend shelf terminating the link.

From the System View menu, use the Configuration → Equipment command from the System View menu, select the Ethernet circuit pack, select the VCG port, then select the tributary (Trib) being removed. Click Select.

Or, use the ed-vcgtrib TL1 command to provision parameters.

In the Tributary provisioning screen, select Disabled for the VCG Membership for both the Output Direction (Sink) and Input Direction (source).

Use the WaveStar^® CIT to log back in to the near-end Alcatel-Lucent 1665 DMXtend shelf in which you started.

From the System View menu, use the Configuration → Equipment command from the System View menu, select the Ethernet circuit pack, select the VCG port, then select the tributary (Trib) being removed. Click Select.

Or, use the ed-vcgtrib TL1 command to provision parameters.

In the Tributary provisioning screen, select Disabled for the VCG Membership for the Output Direction (Sink).

If you are removing tributaries in a multipoint configuration, repeat from Step 14 for each link having tributaries removed. Repeat these steps for all other tributaries being removed.

If required, remove all pass-through and terminating cross-connections relating to the removed tributaries.

End of steps