[c-nsp] GSR 12008 (%ENV_MON-2-FAN)

[Chris Lane]

thanks for your response.
Agreed, what changed?? A remote site, and tech claims nothing at all
changed. Changed filters, room temps are controlled and same as always,
airflow is questionable, Inlet sensors are good but HOT sensors are higher
than normal.
if there is a Line card slot open without a BLANK, would that jepordize air
in and out? I would suspect this would actually help air circulate but also
allow DIRT!

There is a remote chance i have found the issue, at least my fingers are
crossed.
I found this doc last night and sent two new CSC V2 LCs down which fixes a
known issue with cooling.

http://www.cisco.com/en/US/products/hw/routers/ps167/products_field_notice09186a0080094886.shtml

FYI:
Yesterday i replaced the CSC cards and fan tray. Symptoms still remained.
Today i am going to replace the CSC cards with the Version 2 LCs.
i'll update later today, thanks to all that responded.

Chris
On Wed, Mar 19, 2008 at 5:23 AM, e ninja <eninja at gmail.com> wrote:

> Chris,
>
> What changed?
>
> The CSC usually bumps up power to other fans when a fan has failed or the
> cooling system has been compromised or the room gets too hot etc. So, check
> the fans, the filters, ensure room temp and cooling is in order, ensure
> airflow through the chasis hasn't been compromised by an uncovered linecard
> slot for instance and a sh env all, sh diag and logs would help.
>
> /eninja
>
>
>   On Tue, Mar 18, 2008 at 4:29 AM, Chris Lane <clane1875 at gmail.com> wrote:
>
> >  I am getting error
> > %ENV_MON-2-FAN: Fan array has reached CRITICAL level.
> >
> >
> > I did a search and found this on Ciscos website.
> > ------------------------------------------------------------------------
> > %ENV_MON-2-FAN : Fan array has reached [chars] level.
> >
> > Explanation    There might be a hardware problem with the fan array. If
> > the
> > error condition continues for two minutes, the router shuts down
> > automatically to prevent damage to router components.
> > Recommended Action    If the system shuts down, replace the fan tray.
> > Copy
> > the error message exactly as it appears on the console or in the system
> > log,
> > contact your Cisco technical support representative, and provide the
> > representative with the gathered information.
> >
> > ---------------------------------------------------------------------------
> > I have just removed CSC cards and fan tray. Same symptoms.
> > I also must mention the alarm state is short unlike the 2minutes stated
> > above.
> > Mar 18 05:26:18.257 EST: %ENV_MON-2-FAN: Fan array has reached CRITICAL
> > level.
> > Mar 18 05:26:21.066 EST: %ENV_MON-2-FAN: Fan array has reached CRITICAL
> > level.
> >
> > Also i checked:
> > cr.nyc1.ny#sh controllers fia
> > Fabric configuration: 2.4Gbps bandwidth, redundant fabric
> > Master Scheduler: Slot 17     Backup Scheduler: Slot 16
> > >From Fabric FIA Errors
> > -----------------------
> > redund fifo parity 0          redund overflow 0          cell drops
> > 0
> > crc32 lkup parity  0          cell parity     0          crc32
> > 0
> > Switch cards present    0x001F    Slots  16 17 18 19 20
> > Switch cards monitored  0x001F    Slots  16 17 18 19 20
> > Slot:     16         17         18         19         20
> > Name:    csc0       csc1       sfc0       sfc1       sfc2
> >       --------   --------   --------   --------   --------
> > los    0          0          0          0          0
> > state  Off        Off        Off        Off        Off
> > crc16  0          0          0          0          0
> >
> > To Fabric FIA Errors
> > -----------------------
> > sca not pres 0          req error     0          uni fifo overflow 0
> >
> > grant parity 0          multi req     0          uni fifo undrflow 0
> >
> > cntrl parity 0          uni req       0          crc32 lkup parity 0
> >
> > multi fifo   0          empty dst req 0          handshake error   0
> >
> > cell parity  0
> >
> > As you can see no errors are incrementing on the SFC or CSC.
> >
> > I am stumped.
> >
> > Any suggestions would be greatly appreciated.
> >
> > --
> > //CL
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> >
>
>


-- 
//CL