BCM CPU Load overload

[curlycord]

Customer has a remote site, the logged in and told me they see:
CPU Load Above tolerance at 98% for over a minute

Not sure of BCM version.
They have few phones (no ip) and no ACD.

Any thoughts as to what would cause this load?

Thanks

 

[RPMcMurphy]

Is a backup scheduled for the same time the error is reported? I have a few systems that report the same error.

 

[ITBCMGUY]

I have seen it once. I had a cable that got cut and the tip and ring where touching and freaking out the system.

 

[gberger]

Make sure that the bcm is patched with the latest service update.

 

[spooktheblackcat]

I have seen this alarm MANY times on countless systems , all of which are fully patched. Doesn't seem to affect service though.

 

[Deweyhumbolt]

I agree with RP, I've only seen during B/Us.

Adversity is Opportunity

 

[MagnaRGP]

BCM Chassis type? Could be the first signs of a BFT on it's way out....

 

[acewarlock]

I've seen it on over 30 BCM's 1000, 200 and 400 with good BFT's and MB, usually when it's rebooting is when I saw it, but I have seen it during Backup's..




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.

 

[vappl]

I have experienced that problem and it turned up to be a Power connector issue in the backplane. Solution is to get a Y-cable adapter and swapping the existing power cable connector inside and splitting the unused one. I'll include the symptoms and affected systems below: Please see bulletin ID:2006007338,Rev.2
published 2007-04-10


Reissue Reason:
Update to include the date to which the BCM Y-Cable Field Maintenance Kits will be available: December 31, 2007.
Background:
Nortel has been regularly reporting an issue on the BCM / SRG / BCM50 TOP ISSUES bulletin since early 2006
regarding Intermittent Media Bay Module failures.
Analysis of several returned BCM systems has revealed a problem with the female MBM power connector that originates
from the BCM power supply. The connector problem is a design marginality with the female barrel connector pin used in
some of the female power connectors originating from the BCM power supply. On those systems analyzed, the power
connector pins on the connectors that power the MBM backplane have fatigued to the point where a robust power
connection is not maintained, ultimately causing the MBM in question to reset. The connector pin that is subject to fatigue
is used on only two connectors that power the BCM backplane. In the case of Digital Station Modules this is typically
characterized by "247" errors, which can be found in the BCM archlog. Other alarms which may be generated if this issue
is present include: Event 250 / Alarm:50, Event 251 / Alarm:51, and Event 252 / Alarm:52. Note there is no correlation
between the errors generated by software and the type of Media Bay Module installed; any of the errors/alarms may be
generated with any Media Bay Module installed.
If a BCM system has this issue, system users can experience issues such as sporadic call drops, intermittent system
reboots, and frequent alarms being logged (like those mentioned above.) Resetting the BCM may clear the problem
temporarily. Symptoms would likely occur intermittently depending on vibration or system usage.
Analysis:
Nortel has learned that this issue impacts a very small percentage of installed BCM400 and BCM200 base systems and
BCM Expansion Units. As a result of analyzing data from recent case reports, Nortel has identified that the majority of the
affected systems were manufactured in the second half of 2005, with the bulk of them being in the fourth quarter of 2005.
As it is typical that this issue manifests itself within the first few months of installation, it is unlikely that systems installed
and in use for more than 6 months will experience symptoms due to this issue. Though Nortel believes the remaining
exposure is very limited, and only a small number of units affected by this issue remain in the field, we are putting this
solution in place to allow Partners to quickly respond to issues related to the connector pin marginality, if required.
As of May 6, 2006 the manufacturing process for all BCM200 and BCM400 systems, and BCM Expansion Units, has an
additional inspection step in place to ensure this issue does not reoccur. Additionally, the vendor responsible for
providing the part with the design marginality has been removed from the BCM supply chain.
.
>TECHNICAL SUPPORT
. TECHNICAL BULLETIN
.
.
BCM400, BCM200 & Expansion MBM Backplane Power Connector Issue:
Maintenance Solution
Effected BCM Product codes are listed below.
The BCM 3.6 product codes potentially affected by this issue are:
BCM Product Description PEC CPC
-----------------------------------------------------------------------------------------------------------------------------
NA BCM 3.6 BCM400 Standard NT7B10AAEW A0542818
NA BCM 3.6 BCM400 Redundancy NT7B10AAEX A0542819
Int'l BCM 3.6 BCM400 Standard NT7B10AAEY A0542820
Int'l BCM 3.6 BCM400 Redundancy NT7B10AAFA A0542821
NA BCM 3.6 BCM200 Standard NT7B10AAFB A0542822
Int'l BCM 3.6 BCM200 Standard NT7B10AAFC A0542833
UK BCM 3.6 BCM400 Base System, STD w/modem NT7B10AAFE A0545639
UK BCM 3.6 BCM400 Base System, RFO w/modem NT7B10AAFF A0545640
UK BCM 3.6 BCM200 Base System, STD w/modem NT7B10AAFG A0545641
The BCM 3.7 product codes potentially affected by this issue are:
BCM Product Description PEC CPC
-----------------------------------------------------------------------------------------------------------------------------
NA BCM 3.7 BCM400 Base System, STD NT7B10AAFH N0015222
NA BCM 3.7 BCM400 Base System, RFO NT7B10AAFK N0015225
NA BCM 3.7 BCM200 Base System, STD NT7B10AAFL N0015226
Int'l BCM 3.7 BCM400 Base System, STD w/modem NT7B10AAFM N0015227
Int'l BCM 3.7 BCM400 Base System, RFO w/modem NT7B10AAFN N0015228
Int'l BCM 3.7 BCM200 Base System, STD w/modem NT7B10AAFP N0015229
The pre-BCM 3.7 Expansion Cabinet product codes potentially affected by this issue are:
BCM Product Description PEC CPC
-----------------------------------------------------------------------------------------------------------------------------
NA BCM Expansion Unit, Universal PS NT7B14AAAE A0899815
NA BCM Expansion Unit, Redundant PS NT7B14AAAF A0899816
NA BCM Expansion Unit, Universal PS, Modified NT7B14AAAJ A0521639
(temporary replacement for NT7B14AAAE)
Int'l BCM Expansion Unit, Universal PS NT7B14AAAG A0899817
Int'l BCM Expansion Unit, Redundant PS NT7B14AAAH A0899818
The BCM 3.7 Expansion Cabinet product codes potentially affected by this issue are:
BCM Product Description PEC CPC
-----------------------------------------------------------------------------------------------------------------------------
NA BCM Expansion Unit, Universal PS NTPW0119 N0018162
NA BCM Expansion Unit, Redundant PS NTPW0120 N0018163

 

[acewarlock]

That PWR connector didn't cause the CPU over 98%, that was a reboot or MBM resetting. This is a different problem.




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.

 

[curlycord]

Yeah different is right.....now happening on another system:

http://www.tek-tips.com/viewthread.cfm?qid=1457307&page=1

 

[acewarlock]

It never seemed to cause any problems, so I left it alone.




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.