04-20-2018 06:11 AM - edited 03-08-2019 02:44 PM
Hello,
I'm facing a big issue with my stack of two members os 3750E.
The CPU is so high but there is any process consuming the CPU as you can see bellow.
I checked the CPU queu frames and in 5 minutes the difference doesn't seems unusual (image attached).
On logs nothing special.
Can someone give me an hint here?
Thank you
Model: WS-C3750X-24
Firmware Versoin: 15.0(2)SE11
04-20-2018 06:13 AM
04-20-2018 10:52 AM
Hello!
Are you sure you don't have any Debug running in your device? As a first step I recommend you to use "undebug all", aditionally can you provide me the output of the next commands in a txt file?:
show proc cpu detailed process fed | ex 0.0
show proc cpu sorted | ex 0.0
show log
show ver
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Regards,
04-24-2018 05:36 AM
04-24-2018 06:47 AM
Hello Andre thanks for the reply,
I also need this outputs:
show process memory
show platform tcam utilization
Best Regards,
04-24-2018 06:58 AM
04-24-2018 06:58 AM
On the other hand,
Why do you have flapping in those interfaces? (2/0/16 and 2/0/24)? Is this flapp constant in your network?
Regards,
04-24-2018 07:20 AM
04-24-2018 07:29 AM
It's strange because the interfaces not seen to have errors, what about the OSPF neighbor (10.42.201.250)? I could not find anything strange besides the logs among all the exits that you sent me.
04-24-2018 07:38 AM
please provide me the next output: show controllers cpu-interface
Regards,
04-24-2018 07:42 AM
Here is the requested output.
An important finding that we got recently is, we have a aggregator switch connected to this (another 3750) that when this switch has a high value of CPU load the other, the aggregator also have the similar CPU load values).
I mean seems that is something that affect both switches and the aggregator switch doesn't "speak" OSPF.
04-24-2018 07:40 AM
04-25-2018 05:40 AM
Good morning Andre,
II know the kind of implementation isn't the problem, but in the logs you provide me there are a lot of logs that indicate flapping with this neighbor and that is not a healty behavior in your network, maybe the constant change in the neighbord ststus is giving you problems. You should review why this is happening.
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Regards,
04-20-2018 11:14 AM
There are 2 versions of IOS that Cisco recommends to all users
Early Deployment (ED)
Software releases that provide new features and new platform support in addition to bug fixes.
Maintenance Deployment (MD)
A Cisco software release that provides bug fix support and ongoing software maintenance.
Just download the newest version of IOS for the 3750switch & you should be good to go...
Copy the new IOS file from USB or TFTP to flash...
1 - software clean
2 - software install file flash:new IOS image
3 - reload
04-20-2018 06:12 PM
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