Chris, Yes, a linecard slot without a blank compromises airflow. So it is best practice to always cover unoccupied slots.
/eninja On Wed, Mar 19, 2008 at 5:41 AM, Chris Lane <[EMAIL PROTECTED]> wrote: > 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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> > > 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 > > > _______________________________________________ > > > cisco-nsp mailing list [email protected] > > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > > > > > > > > -- > //CL _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
