[asterisk-bugs] [DAHDI-linux 0019119]: Red Alarm after many [PRI got event: HDLC Abort (6) on Primary D-channel of span 1]

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=19119 
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Reported By:                heruan
Assigned To:                
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Project:                    DAHDI-linux
Issue ID:                   19119
Category:                   wcb4xxp
Reproducibility:            always
Severity:                   block
Priority:                   normal
Status:                     feedback
JIRA:                        
Reviewboard Link:            
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Date Submitted:             2011-04-14 02:37 CDT
Last Modified:              2011-04-30 04:31 CDT
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Summary:                    Red Alarm after many [PRI got event: HDLC Abort (6)
on Primary D-channel of span 1]
Description: 
After many [PRI got event: HDLC Abort (6) on Primary D-channel of span 1]
(every 30 seconds), span 1 goes down with Red Alarm.

*CLI> dahdi show status 
Description                              Alarms  IRQ    bpviol CRC4   Fra
Codi Options  LBO
B4XXP (PCI) Card 0 Span 1                OK      0      0      0      CCS
AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 2                OK      0      0      0      CCS
AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
[Apr 13 17:53:10] NOTICE[2301]: chan_dahdi.c:12696 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
[Apr 13 17:53:41] NOTICE[2301]: chan_dahdi.c:12696 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
[Apr 13 17:54:11] NOTICE[2301]: chan_dahdi.c:12696 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
// same message 16 times, every 30 seconds
[Apr 13 18:03:17] NOTICE[2301]: chan_dahdi.c:12696 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
[Apr 13 18:03:47] NOTICE[2301]: chan_dahdi.c:12696 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
[Apr 13 18:04:17] NOTICE[2301]: chan_dahdi.c:12696 pri_dchannel: PRI got
event: HDLC Abort (6) on Primary D-channel of span 1
[Apr 13 18:04:48] NOTICE[2301]: chan_dahdi.c:12696 pri_dchannel: PRI got
event: Alarm (4) on Primary D-channel of span 1
[Apr 13 18:04:48] WARNING[2303]: chan_dahdi.c:5767 handle_alarms: Detected
alarm on channel 1: Red Alarm
[Apr 13 18:04:48] WARNING[2303]: chan_dahdi.c:5767 handle_alarms: Detected
alarm on channel 2: Red Alarm
*CLI> dahdi show status 
Description                              Alarms  IRQ    bpviol CRC4   Fra
Codi Options  LBO
B4XXP (PCI) Card 0 Span 1                RED    0      0      0      CCS
AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
B4XXP (PCI) Card 0 Span 2                OK      0      0      0      CCS
AMI  YEL      0 db (CSU)/0-133 feet (DSX-1)
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 (0134287) heruan (reporter) - 2011-04-30 04:31
 https://issues.asterisk.org/view.php?id=19119#c134287 
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sruffel: I finally managed to force wcb4xxp interrupts on one dedicated
core, but I still get "PRI got event: HDLC Abort (6) on D-channel of span
1" every 30 seconds.

I discovered another interesting thing: while the wcb4xxp card is
connected to the NT, I hear the "ticks" generating the HDLC Abort every 30
seconds. Then, if I disconnect the cable from the wcb4xxp to the NT, I
still hear the "ticks" from the NT, *but* every 135 seconds (more and
less). Definitely no more every 30 seconds.

Question: those "ticks" generate the HDLC Abort warning, then after many
of this warnings the span goes on RED alarm. Is the RED alarm a consequence
of the HDLC Abort warnings? I thought yes until now, but I want to be
secure. 

Issue History 
Date Modified    Username       Field                    Change               
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2011-04-30 04:31 heruan         Note Added: 0134287                          
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