-30 temp here currently and I have two switches that are flapping the LAN ports now that its cold out. Nothing is getting power cycled, the ports just go from 1gbps to 100mbps to down.
WS-12-250AC
firmware 1.4.5
~120watt draw
26C board temp
WS-24-400A
firmware 1.4.7rc14
~150watt draw
Both switches are powering Prism AP's and an AF5X.
I realize this is old firmware. A GUI reboot has actually resolved the issue for the past 5 minutes for me at the DC site. The AC site is still port flapping. Any ideas?
Switches port flapping in cold
Re: Switches port flapping in cold
I have powered off 4 of the 12 sectors on the 24port and things appears to have stabilized for now.
- wmtel
- Member
- Posts: 1
- Joined: Wed Jan 20, 2016 12:30 pm
- Has thanked: 0 time
- Been thanked: 0 time
Re: Switches port flapping in cold
We are having the same issue here (temp is -22F right now). I am going to try powering down ports and see if that helps. Thanks!
-
sirhc - Employee
- Posts: 7416
- Joined: Tue Apr 08, 2014 3:48 pm
- Location: Lancaster, PA
- Has thanked: 1608 times
- Been thanked: 1325 times
Re: Switches port flapping in cold
My guess is this is more of temperature contraction of parts like EThernet connectors.
Several times a year we have to dispatch tower guys to simply unplug and replug Ethernet connector. Normally happens in extreme temp ranges cold or hot.
viewtopic.php?f=14&t=4933#p28000
Several times a year we have to dispatch tower guys to simply unplug and replug Ethernet connector. Normally happens in extreme temp ranges cold or hot.
viewtopic.php?f=14&t=4933#p28000
Support is handled on the Forums not in Emails and PMs.
Before you ask a question use the Search function to see it has been answered before.
To do an Advanced Search click the magnifying glass in the Search Box.
To upload pictures click the Upload attachment link below the BLUE SUBMIT BUTTON.
Before you ask a question use the Search function to see it has been answered before.
To do an Advanced Search click the magnifying glass in the Search Box.
To upload pictures click the Upload attachment link below the BLUE SUBMIT BUTTON.
Re: Switches port flapping in cold
Interesting.... But shutting off POE to a few of the ports to reduce power draw resolves the issue for us. Just very odd....
-
sirhc - Employee
- Posts: 7416
- Joined: Tue Apr 08, 2014 3:48 pm
- Location: Lancaster, PA
- Has thanked: 1608 times
- Been thanked: 1325 times
Re: Switches port flapping in cold
Wifimax wrote:Interesting.... But shutting off POE to a few of the ports to reduce power draw resolves the issue for us. Just very odd....
Then read this post: viewtopic.php?f=17&t=3934#p24989
And this thread: viewtopic.php?f=17&t=4930#p27991
Support is handled on the Forums not in Emails and PMs.
Before you ask a question use the Search function to see it has been answered before.
To do an Advanced Search click the magnifying glass in the Search Box.
To upload pictures click the Upload attachment link below the BLUE SUBMIT BUTTON.
Before you ask a question use the Search function to see it has been answered before.
To do an Advanced Search click the magnifying glass in the Search Box.
To upload pictures click the Upload attachment link below the BLUE SUBMIT BUTTON.
6 posts
Page 1 of 1
Who is online
Users browsing this forum: No registered users and 78 guests