Product Line
|
Transport network
|
Product Family
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Product Model
|
Release Date
|
2014-08-19
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Severity
|
Major
|
Urgency
|
Non-urgent
| ||
Versions Involved
|
All R versions earlier than NG-SDH V100R010C03SPC200
l NG-SDH V100R008C02SPH203 and later hot patch versions are not involved.
l NG-SDH V100R008C02SPC500 and later V100R008 versions are not involved.
| ||||
Devices Involved
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Application Scope
|
China and outside China
| ||||
Operation Category
|
Prewarning
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Prewarning ID
|
21102
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Operation Requirements
|
Learning and prevention
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Expected Completion Date
| |||||
Manpower Required
| |||||
Contact Persons
|
Contact Person of the Product Line
|
Xu Kai (employee ID: 00287661)
| |||
Rectification Prime of the Regional Office
| |||||
Rectification Prime of the Representative Office
| |||||
Keywords:
NESTATE_INSTALL, service interruption, cross-connect board reset
[Problem Description]
Trigger conditions:
This problem occurs if all the following conditions are met:
1. An NE is in the NESTATE-INSTALL state.
2. The active cross-connect board of the NE is warm/cold reset, or the standby
cross-connect board is warm/cold reset and then a switchover occurs between the active and
standby cross-connect boards.
Symptom:
All services on the NE are interrupted.
Identification method:
A cross-connect board of an NE is reset when the NE is in the NESTATE_INSTALL state.
[Root Cause]
When an NE is in the NESTATE_INSTALL state, it does not apply service configurations to cross-connect boards. However, if a cross-connect board is reset when the NE is in the NESTATE_INSTALL state, the NE automatically adds a corresponding logical board and applies null configuration to the reset cross-connect board. If the reset is performed on the active cross-connect board, services are interrupted. If the reset is performed on the standby cross-connect board and then a switchover occurs between the active and standby cross-connect boards, services are interrupted.
[Impact and Risk]
When an NE is in the NESTATE_INSTALL state and its cross-connect boards are reset, all services may be interrupted.
Measures and Solutions
Recovery measures:
l For a non-ASON NE, download configuration data from the network management system (NMS) to recover services.
l For an ASON NE, restore NE databases, and then reset service boards (such as cross-connect boards and line boards) to recover services. Alternatively, recover services by following the corresponding disaster recovery guides.
Preventive measures:
When an NE is in the NESTATE_INSTALL state, do not reset cross-connect boards, configure new services, or issue verification commands.
Solution:
Upgrade the NE to one of the following versions to solve the problem:
l NG-SDH V100R008C02SPH203 or a later hot patch version
l NG-SDH V100R008C02SPC500 or a later V100R008 version
l NG-SDH V100R010C03SPC200 or a later version
Material handling after replacement:
N/A
[Inspection Tool Applicable or Not]
N/A
[Rectification Scope and Time Requirements]
N/A
[Rectification Instructions]
N/A
[Attachment]
N/A
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