Provision J0 section trace

Procedure 6-13: Provision J0 section trace

Overview

Use this procedure to provision J0 section trace for an OC-n or EC-1 line.

Privilege level

You must login as either a Privileged or General user to complete this procedure.

J0 section trace

The J0 byte in the OC-n and EC-1 section overhead provides the ability to repeatedly transmit and receive a provisioned message so that the receiver can verify continued connectivity to the intended transmitter. The actual receive message is compared to the provisioned expected receive message. If a mismatch is detected, the system reports an alarm/condition.

J0 section trace allows users to perform the following:

Select formats for the transmit and expected receive J0 byte
Provision transmit and expected receive section trace messages
Enable or disable monitoring/reporting of the received J0 section trace
Enable or disable consequent actions in response to detecting a J0 section trace mismatch

Section trace formats and messages

The following section trace formats and messages are supported:

Format 1: A provisionable 1-Byte ASCII or Hexadecimal message for OC-n and EC-1 interfaces
Format 2 (initial value): A fixed (not provisionable) 1-Byte Hexadecimal message (01) for OC-n and EC-1 interfaces
Format 16: A provisionable 16-Byte ASCII or Hexadecimal message for OC-n interfaces only
Format 64: A provisionable 64-Byte ASCII or Hexadecimal message for OC-n interfaces only

When Format 2 is the expected receive section trace format, J0 section trace monitoring is disabled.

The hexadecimal values may consist of characters 0–9 and A–F. The provisioned values may consist of up to twice the number specified by the format (since there are two digits per byte). If fewer characters than the maximum are specified, the value is padded with 0.

The ASCII values may consist of any character except the semicolon (;), double quote (“), and backslash (\). For 1-Byte formats, a single character is allowed. For the 16-Byte format, up to 15 characters are allowed. For the 64-Byte format, up to 63 characters are allowed. For the 16-Byte and 64-Byte formats, the system prepends a valid CRC-7 byte.

J0 section trace monitoring

The network element allows users to provision whether or not to monitor the actual receive section trace format and message for defects.

When the Receive Section Trace Identifier Monitor parameter is enabled, the network element compares the actual receive section trace format/message with the provisioned expected receive section trace format/message. If a mismatch is detected, the system reports a Section Trace Identifier Mismatch alarm/condition.

When the Receive Section Trace Identifier Monitor parameter is disabled, the network element does not compare the actual receive section trace format/message with the provisioned expected receive section trace format/message.

J0 section trace monitoring does not affect the Transmit Section Trace parameters.

Consequent actions

The detection of J0 section trace mismatches may be provisioned to trigger consequent actions similar to other alarms, or it may be provisioned for use as a diagnostic tool only.

If the Receive Section Trace Identifier Mismatch Consequent Action parameter is enabled and a mismatch is detected, AIS-L is transmitted downstream and Line/Path switching is performed. The system also reports an inc. OCN section trace identifier mismatch (TIM-S) or inc. EC1 section trace identifier mismatch (TIM-S) alarm/condition in response to the mismatch.

If the Receive Section Trace Identifier Mismatch Consequent Action parameter is disabled and a mismatch is detected, AIS-L is not sent downstream and Line/Path switching is not performed. The system also reports an inc. OCN section trace identifier mismatch, diagnostic (TIM-S-D) or inc. EC1 section trace identifier mismatch, diagnostic (TIM-S-D) alarm/condition in response to the mismatch.

Before you begin

Prior to performing this procedure:

Refer to Before you begin and Required equipment in this chapter.
Obtain the work instructions for this procedure.
Verify that the work instructions identify the network elements and OC-n/EC-1 ports to be provisioned.
Verify that the work instructions specify the required J0 section trace parameters and values to be provisioned.

Steps

Perform the following steps to provision J0 section trace for an OC-n or EC-1 line.


1	Important! J0 section trace is provisioned for one direction of transmission at a time. Using the work instructions, determine whether J0 section trace is to be provisioned for both directions of transmission. If J0 section trace is to be provisioned for both directions of transmission, identify the direction of transmission to be provisioned first.
2	Identify and log in to the required network elements. Reference: Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar^® CIT session
3	At the head-end (transmit) network element, select Configuration → Equipment. Result: The Configure Equipment window opens.
4	Find the circuit pack with the port being provisioned, then expand the equipment list by clicking on the plus (+) sign next to the circuit pack.
5	Click (highlight) the port being provisioned, then click Select at the bottom of the window. Result: The port parameters appear.
6	Click the J0 Section Trace tab. Result: The port J0 section trace parameters appear.
7	Provision the Transmit Section Trace Format, Transmit Section Trace Display Mode, and Transmit Section Trace Value parameters according to the work instructions and click Apply. Click Close. For more information about the J0 section trace formats and messages refer to Section trace formats and messages.
8	At the tail-end (receive) network element, select Configuration → Equipment. Result: The Configure Equipment window opens.
9	Find the circuit pack with the port being provisioned, then expand the equipment list by clicking on the plus (+) sign next to the circuit pack.
10	Click (highlight) the port being provisioned, then click Select at the bottom of the window. Result: The port parameters appear.
11	Click the J0 Section Trace tab. Result: The port J0 section trace parameters appear.
12	Provision the Expected Receive Section Trace Format, Expected Receive Section Trace Display Mode, and Expected Receive Section Trace Value parameters according to the work instructions. For more information about the J0 section trace formats and messages refer to Section trace formats and messages.
13	Enable/Disable the Receive Section Trace Identifier Monitor and Receive Section Trace Identifier Mismatch Consequent Action according to the work instructions and click Apply. Click Close. For more information about the J0 section trace monitoring and consequent actions, refer to J0 section trace monitoring and Consequent actions.
14	At the tail-end (receive) network element, click the Alarm List button to verify that no J0 section trace alarms/conditions are present for the provisioned OC-n or EC-1 port. If required, refer to the Alcatel-Lucent 1665 Data Multiplexer Extend (DMXtend) Alarm Messages and Trouble Clearing Guide, 365-372-326 to clear any alarms/conditions.
15	If required, repeat Step 3 through Step 14 to provision J0 section trace for the opposite direction of transmission. End of steps