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Alarm Handling

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of alarms on the product.
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CLOCK_1.3.6.1.4.1.2011.5.25.186.1.8.1 hwClockSourceSwitch

CLOCK_1.3.6.1.4.1.2011.5.25.186.1.8.1 hwClockSourceSwitch

Description

CLOCK/2/SOURCESWITCH: OID [oid] The clock source has switched. (Sou rceSelChassisIndex=[INTEGER], SourceSelType=[INTEGER], LastSourceId=[INTEGER], C urSourceId=[INTEGER], SourceSelMode=[INTEGER] --- SelMode: 1=AUTO; 2=MANUAL; 3=F ORCE)

The clock source is switched.

The clock sources are as follows:

0: Inner Clock, that is, the clock generated by the local crystal oscillator, which cannot be changed

1. BITS0, that is, the BITS0 clock

2. BITS1, that is, the BITS1 clock

3: Peer Board BITS0, that is, the BITS0 clock on the peer board

4: Peer Board BITS1, that is, the BITS1 clock on the peer board

5: Left Frame Clock, that is, the clock signal sent from the left side of the frame

6: Right Frame Clock, that is, the clock signal sent from the right side of the frame

7. FSU, that is, clock on the FSU

8: Peer Board FSU, that is, clock on the peer FSU

9. System Clock, that is, the clock selected automatically or specified by forcible switchover or manual switchover

Attribute

Alarm ID Alarm Severity Alarm Type
1.3.6.1.4.1.2011.5.25.186.1.8.1 Major equipmentAlarm(5)

Parameters

Name Meaning
[oid] Indicates the OID of the alarm.
SourceSelChassisIndex Indicates the index of the chassis where the clock source is located.
SourceSelType Indicates the clock source selection mode.
LastSourceId Indicates the last clock source ID.
CurSourceId Indicates the current clock source ID.
SourceSelMode Indicates the clock switchover mode.

Impact on the System

The clock source switchover affects services.

Possible Causes

Cause 1:

The clock source is adjusted manually according to network requirements.

Cause 2:

The current clock source is lost.

Cause 3:

The clock source priority of the device is changed when the SSM quality level is not used in clock source selection.

Cause 4:

The SSM information from the upstream device is changed when the SSM quality level is used in clock source selection.

Procedure

  1. Check whether the clock switchover is performed through commands because services are adjusted.

    • If so, this alarm is informational, and the alarm handling ends.

    • If not, go to step 2.

  2. Run the display clock mode command to check whether the value of QL-Enable is Yes.

    • If so, the SSM quality level is used in clock source selection. Then go to step 11.
    • If not, the priority is used in clock source selection. Then go to step 3.

  3. Run the display clock left-frame/right-frame command to check the priority of the clock source sent from the interface and run the display clock priority command to check the priority of each clock source. Then determine whether the priority meets application requirements.

    • If so, no action is required.
    • If not, go to step 4.

  4. According to the alarm information, run the display clock source command to check the value of Signal Fail to determine whether the clock source is lost before the switchover.

    • If so, go to step 5.
    • If not, go to step 8.

  5. Check whether cables are connected properly according to the alarm information.

    • If so, go to step 8.
    • If not, go to step 6.

  6. Connect cables again and check whether the alarm on the clock switchover is received.

    • If so, no action is required.
    • If not, go to step 7.

  7. Check whether the transmit device is faulty.

    • If so, go to step 7.
    • If not, go to step 8.

  8. Check whether the path for selecting the clock source needs to be changed.

    • If so, go to step 9.
    • If not, collect alarm information and configuration information, and then contact technical support personnel.

  9. Run the clock left-frame|right-frame, clock priority, and clock clock wait-to-restore commands to adjust the path for selecting the clock source according to networking requirements and check whether the alarm on the clock switchover is received. In addition, the current clock source meets configuration requirements.

    • If so, no action is required.
    • If not, collect alarm information and configuration information, and then contact technical support personnel.

  10. Run the display clock state and display clock source commands to check the SSM information about the line clock source. Then determine whether the adjusted clock source meets application requirements.

    • If so, no action is required.
    • If not, go to step 11.

  11. According to the alarm information, run the display clock source command to check the value of Signal Fail to determine whether the clock source is lost before the switchover.

    • If so, go to step 12.
    • If not, go to step 15.

  12. Check whether cables are connected properly according to the alarm information.

    • If so, go to step 14.
    • If not, go to step 13.

  13. Connect cables again and check whether the alarm on the clock switchover is received.

    • If so, no action is required.
    • If not, go to step 14.

  14. Check whether the transmit device is faulty.

    • If so, collect alarm information and configuration information, and then contact technical support personnel.
    • If not, go to step 15.

  15. Check whether the path for selecting the clock source needs to be changed.

    • If so, go to step 16.
    • If not, no action is required.

  16. Run the clock ssm-config command on the master clock device to set the quality level of the master clock or run the clock force-out-s1 command on the upstream device to adjust the path for selecting the clock source. Then check whether the alarm on the clock switchover is received and whether the clock source meets configuration requirements.

    • If so, no action is required.
    • If not, collect alarm information and configuration information, and then contact technical support personnel.

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Updated: 2019-08-21

Document ID: EDOC1000142054

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