Procedure 9-9.2: Establish subtending low-speed BLSR

Important!

This is not a standalone procedure. Perform this procedure only as directed by Procedure 9-9: Establish subtending low-speed UPSR/BLSR.

Steps

Important!

This procedure assumes that the subtending ring is established by interconnecting Alcatel-Lucent 1665 DMX nodes using a Function/Growth slot at the host Alcatel-Lucent 1665 DMX node and the OC-48 Main/Function/Growth slot pair of the Alcatel-Lucent 1665 DMX nodes in the subtending ring.

Ignore all alarms until procedure is complete.

Complete the following steps to establish a subtending low-speed OC-48 2-fiber BLSR. (Refer to the example in Figure 9-10, Subtending 2-fiber BLSR example and 2-fiber bidirectional line switched ring worksheet at the end of this procedure when performing this procedure.)

 
1

From your work instructions, determine the network configuration. Refer to Figure 9-10, Subtending 2-fiber BLSR example for an example. If possible, make a sketch of the existing network and the required subtending ring connections.

If required, select the Administration → OSI Neighbor Map command at the host Alcatel-Lucent 1665 DMX node and note the NEs connected to Main 1 and Main 2.

Access each NE identified, select the Administration → OSI Neighbor Map command, and note the NEs connected to Main 1 and Main 2.

Repeat this step until the network can be sketched.


2

Important!

Two or more shelves in the same network cannot have the same TID.

Using the work instructions and office records, verify that no duplicate TID settings exist between the nodes in the existing network and the subtending ring. If duplicate TID settings exist, determine new settings and at each site with duplicate TID settings, select Administration → Set TID from the System View menu, and enter new TID settings.

Reference:

Procedure 7-11: Set/change system TID


3

If required, modify the network service access point (NSAP) address and/or enable Level 2 routing capabilities at the host Alcatel-Lucent 1665 DMX node and the nodes in the subtending ring.

Reference:

Procedure 7-13: Provision network layer 3 parameters


4

Important!

When the Main slot pair is equipped with LNW26B OC-48 OLIU circuit packs, low-speed OC-48 BLSRs are only supported in slot pair D1 and D2 or G1 and G2 only. Alcatel-Lucent 1665 DMX supports up to two subtending BLSRs.

At the host Alcatel-Lucent 1665 DMX node, refer to DMX Node 5 in Figure 9-10, Subtending 2-fiber BLSR example, install the OLIU circuit packs in the appropriate Function/Growth slot pair (A1 and A2, B1 and B2, C1 and C2, D1 and D2, or G1 and G2).

Important!

If the work instructions or office records do not specify OLIU types, refer to Alcatel-Lucent 1665 Data Multiplexer (DMX) Applications and Planning Guide, 365-372-300, for a description of OLIU circuit packs and applications. Optical line power measurements and/or office records must be used to verify that the span length can be supported.

The subtending ring connections to the host Alcatel-Lucent 1665 DMX node must be in two slots in the same Function/Growth group (for example: A1 and A2.)

Reference:

Procedure 4-3: Install OLIU circuit packs in Function slots


5

Important!

If OSI over DCC is enabled for ports, an inconsistent DCC values alarm is reported when the ports are looped back.

If required at the host Alcatel-Lucent 1665 DMX node, clear the inconsistent DCC values alarm by disabling OSI over DCC for the required ports. From the System View menu, select Configuration → DCC Terminations and disable OSI Over DCC for the required DCC ports.

Reference:

Procedure 6-4: Provision DCC terminations


6

Important!

The Application parameter of the low-speed OC-n port pairs being connected must be provisioned 2F BLSR.

Up to 15 BLSR protection groups may be supported by a single network element when the Main slots are equipped with Very Large Fabric LNW59, LNW82, or LNW504 OLIU circuit packs.

From the System View menu at the host Alcatel-Lucent 1665 DMX node, select Configuration → Equipment, select the required low-speed OC-n ports, and provision the port parameters according to the work instructions.

Reference:

Procedure 4-4: Provision OLIU circuit packs/ports for service


7

At the host Alcatel-Lucent 1665 DMX node, verify that the low-speed OC-n ports were provisioned correctly using the View → Equipment command.


8

From the system view at the host Alcatel-Lucent 1665 DMX node,

  1. Select Configuration → Equipment.

  2. Select the Ring ID tab and expand the required ring by clicking on the plus sign (+).

  3. Click on the required 2F BLSR protection group and Select.

  4. Provision the required protection group parameters according to the work instructions, then click Apply and Close. If no changes were made, click Close and go to the next step.


9

From the System View menu,

  1. Select View → Protection.

  2. Select the required 2F BLSR protection group and click Select.

  3. Click on the Provisionable Parameters tab and verify that the protection group parameters were provisioned correctly. Then click Close.


10

If...

Then...

automatic ring discovery was provisioned at each node,

Continue with Step 11.

manual ring discovery was provisioned at each node,

At the host node, establish a new manual ring map.

Refer to Procedure 9-4: Provision manual ring map.


11

Important!

If OSI over DCC is enabled, the LAPD Role parameter must be provisioned differently at each end of an optical span. For example, if the LAPD Role parameter is provisioned to user-side at one end of an optical span, then the LAPD Role parameter must be provisioned network-side at the other end of the optical span.

From the System View menu, select Configuration → DCC Terminations and provision the DCC terminations for the required DCC ports according to the work instructions.

Result:

If OSI over DCC is enabled, an inconsistent DCC values alarm will occur if the OC-n ports are looped back.

Reference:

Procedure 6-4: Provision DCC terminations


12

From the System View menu at the host Alcatel-Lucent 1665 DMX node, select View → DCC Terminations and verify that the DCC terminations were provisioned correctly.


13

At each node in the subtending ring, provision the required Main/Function/Growth ports, 2-fiber BLSR protection group, DCC terminations, synchronization, and remote NE status functions according to the work instructions.

If the node is an...

Then...

Alcatel-Lucent 1665 DMX and the Main ports are used,

Refer to Procedure 9-1: Establish high-speed end-to-end Alcatel-Lucent 1665 DMX network to provision and verify the required Main ports, DCC terminations, synchronization, and remote NE status functions.

Alcatel-Lucent 1665 DMX and the Function/Growth ports are used,

Repeat Step 4 through Step 12 to provision and verify the required Function/Growth ports, 2-fiber BLSR protection group, and DCC terminations.


14

Beginning at the host Alcatel-Lucent 1665 DMX node, connect the fibers between the required low-speed OC-n port in Function/Growth slot 1 and the required OC-n port in Main/Function/Growth slot 2 at the adjacent node and verify the integrity of the optical span being established.

Reference:

Refer to Figure 9-10, Subtending 2-fiber BLSR example when connecting fibers. The following connections are required at the host Alcatel-Lucent 1665 DMX node:

Function/Growth slot A1, B1, C1, D1, or G1 at (Node 5)

connects to the M2 OLIU or Function/Growth slot 2 OLIU (A2, B2, C2, D2, or G2) of the subtending shelf

Function/Growth slot A2, B2, C2, D2, or G2 (Node 5)

connects to the M1 OLIU or Function/Growth slot 1 OLIU (A1, B1, C1, D1, or G1) of the subtending shelf

Reference:

Procedure 14-4: Perform connection and verification of optical facility


15

Perform end-to-end optical line test.

Reference:


16

Repeat Step 14 and Step 15 for each optical span in the subtending 2-fiber BLSR. Continue around the subtending ring in the same direction until all nodes are connected. Refer to the example at the end of the procedure.


17

If automatic ring discovery was provisioned...

Then...

enabled at each node,

Important!

As the ring is connected, nodes automatically communicate with each other using the data communications channel (DCC) and build a ring map. If successful, automatic ring discovery builds a ring map at each node and the Ring Discovery in Progress condition clears. If unsuccessful, the ring map is not complete and alarms are reported.

At the host node, select View → Ring Map → Ring Map. Then click on the appropriate ring and Select.

The ring map information appears. If the ring is incomplete and alarms are present, refer to Alcatel-Lucent 1665 Data Multiplexer (DMX) Alarm Messages and Trouble Clearing Guide, 365-372-302.

disabled at each node,

go to the next step.


18

At the host Alcatel-Lucent 1665 DMX node, verify 2-fiber BLSR protection switching:

  1. Select Fault → Protection Switch. Select the required protection group and click Select. Choose the East or West direction with switch type Manual to Protection, Ring. Click Apply.

  2. Select View → Protection. Select the required protection group and click Select. Observe the Ring Node APS (Automatic Protection Switch) State, East Switch Request State, West Switch Request State, East Channel State, and West Channel State parameters. Verify the 2-fiber BLSR protection switch was performed.

  3. Select Fault → Protection Switch. Select the required protection group and click Select. Choose the required direction with switch type Clear. Click Apply.

Repeat this step at each node in the subtending 2-fiber BLSR (refer to the 2-fiber BLSR worksheet at the end of the procedure) to verify protection switching.


19

At each node in the subtending ring, click the Alarm List button and verify that no alarms are present. If required, clear any alarms that are present.

Reference:

Alcatel-Lucent 1665 Data Multiplexer (DMX) Alarm Messages and Trouble Clearing Guide, 365-372-302


20

Important!

Establishing service requires that the proper slots in each terminating node be properly equipped with the correct circuit pack(s) for the type of service being established. It also requires numerous cross-connections in each of the nodes representing the path of the required service. Additionally, transmission tests should be performed to verify the continuity and quality of the established circuit.

The subtending ring is now ready for initial service to be established.

Reference:


End of steps

Figure 9-10: Subtending 2-fiber BLSR example
Subtending 2-fiber BLSR example+
2-Fiber BLSR Worksheet
View the figure
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