Sub-Product Line
|
Product Family
|
Optical access
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Model
|
Release Time
|
2011-02-17
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Severity
|
Critical
|
Urgency
|
Urgent
| ||
Involved Versions
|
MA5600T V800R008C02, MA5600T V800R008C01, MA5600T V800R007C01, MA5600T V800R007C00, and MA5600T V800R006C02
| ||||
Applicable Scope
|
Sites with MA5600Ts of the above-mentioned versions
| ||||
Operation Requirements
|
Prevention
| ||||
Completion Time
|
N/A
| ||||
PCN/FN ID
|
N/A
|
Change Order Number
|
N/A
| ||
Sub-Product Line: Access network Model: MA5600T
[Problem Description]
Trigger conditions:
The gateway returns an ICMP Destination Unreachable message after the ping -v IP address command is executed on an MA5600T.
Fault symptom:
The program instruction is abnormal and the MA5600T resets. See the following example:
MA5600T(config)#ping -v 10.10.10.1
PING 10.10.10.1: 56 data bytes, press CTRL_C to break
======================== Exception Info Begin ========================
Exception Time : 2011-02-10 16:26:51
Exception VosTick : 10636031
Exception CpuTick : 0x00000674 8b463a54
Exception Type : PROGRAM EXCEPTION
Exception Vector Num : 0x700
Exception Task : Co0 (ID = 98, OsalID = 0x783c020)
Exception PID : -1
Exception CPUID : -1
Dopra Version : DOPRA V100R006C08SPC070
Application Version : UnConfig
Task Stack Base : 0x7914000
Task Stack End : 0x790a000
Task Stack Max Size : 0xa000
Task Stack Cur Size : 0
Task Stack High : 0x2d10
Task Stack Margin : 0x72f0
Identification method:
The MA5600T resets immediately the ping -v IP address command is executed.
[Root Cause]
ping -v requires the domain name server (DNS) to parse the domain name corresponding to the IP address of the ICMP Destination Unreachable message returned. During the domain name parsing, the hook function is not associated. As a result, the MA5600T invokes an empty hook function, causing a system reset.
[Impact and Risks]
All services of the reset MA5600T will be interrupted and the configurations that are not saved before the reset will be lost.
[Measures and Solutions]
Recovery measures:
N/A
Workarounds:
Do not add the parameter -v when running a ping command.
Solutions:
The problem will be resolved in the following commercial patches:
V800R006C02SPC124, to be released at the end of March 2011
V800R007C00SPC313, to be released at the end of March 2011
V800R008C01SPC104, to be released at the end of April 2011
[Rectification Scope and Time Requirements]
N/A
[Notice Expiration]
This notice automatically expires after related patches are loaded.
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