Harry, I think you're ok. There are multiple temp sensors on each module, usually at the front where fresh air is drawn in, and at the rear when it's being exhausted. It's normal for the sensors in the rear to run hotter because there reading the increased temp after air flows over the heat exchangers. It's also normal for some slots to run a bit hotter than others. The type of card makes a large difference too...4x10G XFP is much hotter than the newer 8x10G SFP+.
I'd use Sensor #1 as your baseline sensor as I think that's the one measuring the air as it's drawn in. Also, are your fans running on HIGH, or cycling between Medium and High? Are you seeing any syslog messages warning about high temps? Wilbur -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, March 31, 2011 10:00 AM To: [email protected] Subject: foundry-nsp Digest, Vol 98, Issue 24 Send foundry-nsp mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://puck.nether.net/mailman/listinfo/foundry-nsp or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of foundry-nsp digest..." Today's Topics: 1. XMR Temperature sensors (Harry Lewins) ---------------------------------------------------------------------- Message: 1 Date: Thu, 31 Mar 2011 12:20:09 +0100 From: "Harry Lewins" <[email protected]> To: <[email protected]> Subject: [f-nsp] XMR Temperature sensors Message-ID: <[email protected]> Content-Type: text/plain; charset="us-ascii" Hi guys, Wondering if you could give me a bit of steer here... We have multiple XMR-4s and 16s in our core, and we pretty varied temperatures on them, despite them all being in temperature controlled data centres etc. Within this, we also see massive differences on the individual sensors. For example, an XMR-4:- SLOT #: CARD TYPE: SENSOR # TEMPERATURE (C): 33 ACTIVE MG 1 35.500C 33 ACTIVE MG 2 48.500C ======================================================= 34 STANDBY MG 1 38.500C ======================================================= 1 LP 1 36.500C 1 LP 2 55.625C 2 LP 1 49.500C 2 LP 2 72.0C SNM # FE # TEMPERATURE (C): 1 N/A 34.0C 2 N/A 35.5Ce One sensor is over 72 degrees! This XMR-16 varies from 35 to 59 degrees:- SLOT #: CARD TYPE: SENSOR # TEMPERATURE (C): 33 ACTIVE MG 1 42.0C 33 ACTIVE MG 2 61.250C ======================================================= 34 STANDBY MG 1 36.500C ======================================================= 1 LP 1 47.500C 1 LP 2 46.500C 2 LP 1 39.0C 2 LP 2 43.500C 3 LP 1 43.0C 3 LP 2 45.0C 4 LP 1 40.500C 4 LP 2 48.500C 5 LP 1 44.500C 5 LP 2 48.500C 6 LP 1 40.0C 6 LP 2 42.250C 7 LP 1 45.500C 7 LP 2 46.500C 8 LP 1 37.500C 8 LP 2 38.500C 9 LP 1 43.500C 9 LP 2 59.0C 15 LP 1 49.0C 15 LP 2 51.250C 15 LP 3 UNUSED 16 LP 1 43.0C 16 LP 2 42.0C 16 LP 3 UNUSED SNM # FE # TEMPERATURE (C): 1 N/A 42.0C 2 N/A 35.0C 3 N/A 38.5C This XMR-4 varies from 29.5 to over 60 degrees... SLOT #: CARD TYPE: SENSOR # TEMPERATURE (C): 33 ACTIVE MG 1 29.500C 33 ACTIVE MG 2 41.125C ======================================================= 1 LP 1 33.0C 1 LP 2 47.875C 2 LP 1 42.0C 2 LP 2 60.250C SNM # FE # TEMPERATURE (C): 1 N/A 27.0C 2 N/A 29.5C I could go on, but I guess you get the point! I'm just wondering if this is normal - obviously I would expect some variation in the readings, depending on where the sensor is in the chassis, how populated it is, what cards are in it, how busy those cards are etc. But this seems very high, and indeed temperatures over 70 degrees sound like a bad thing to me... Do you guys see similar temperatures? Initially we were monitoring all these sensors with SNMP and freaking out every time one went over 60 degrees, but we've scaled that back a bit now. Do you guys just monitor the cooler sensor? That is our current plan. Does anyone know at what temperature we would start seeing a degraded performance? I'm waiting on our supplier to give me some documentation on this, but just wondered if you guys have real world experience. Thanks for your help, Harry _____________________________________________________________________ This e-mail and all attachments have been scanned by the hSo virus scanning service powered by Webroot and no known viruses were detected. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://puck.nether.net/pipermail/foundry-nsp/attachments/20110331/e2831ca5/attachment-0001.html> ------------------------------ _______________________________________________ foundry-nsp mailing list [email protected] http://puck.nether.net/mailman/listinfo/foundry-nsp End of foundry-nsp Digest, Vol 98, Issue 24 ******************************************* _______________________________________________ foundry-nsp mailing list [email protected] http://puck.nether.net/mailman/listinfo/foundry-nsp
