05-02-2012 10:51 AM - last edited on 03-25-2019 03:35 PM by ciscomoderator
If you are searching due to finding out your 3650C has high CPU, you can try these tricks:
* add storm control
* upgrade to c3560c-universalk9-tar.122-55.EX3.tar
(EX2 has an Hulc LED Process bug)
* If you are in area 0 with OSPF, turn it into an NSSA and reduce your routes!
Honestly, I am not sure what fixed my switch, but it was using a lot of CPU and rebooting itself. It appears stable today (I did all three changes at once). Attached is a graph showing CPU usage over time on the switch.
Oh, and the switch did not like the using archive...
archive download-sw /overwrite tftp://1.2.3.4/
c3560c-universalk9-tar.122-55.EX3.tar
So I did a
# copy tftp://1.2.3.4/
c3560c405ex-universalk9-mz.122-55.EX3/c3560c405ex-universalk9-mz.122-55.EX3.bin flash:
then
(config)# boot system
flash:/c3560c405ex-universalk9-mz.122-55.EX3.bin
This was on WS-C3560CG-8PC-S
Old OS: 12.2(55)EX2
New OS: 12.2(55)EX3
05-02-2012 04:39 PM
Oh, and the switch did not like the using archive...
archive download-sw /overwrite tftp://1.2.3.4/c3560c-universalk9-tar.122-55.EX3.tar
Errrr ... I have >50 of these (WS-C3560CG-8PC) and they are all running 12.2(55)EX3 on a Layer 2.
I upgraded a few (for testing) with the "archive download-sw /over /no-boot-set tftp://1.2.3.4/c3560c-universalk9-tar.122-55.EX3.tar" and I don't see any issues or "failure" of this command.
The rest of the 3560CG I've deployed had their IOS upgraded using Cisco ZeroTouch. Again, I didn't see any issues.
No issues with the CPU either.
05-02-2012 06:13 PM
Maybe it was just the EX2 that came on the device. Made it through the day, and CPU was low.
# show processes cpu sorted
Showed Hulc LED Process at 10% <--- not normal for the blinking LED to use 10% of the CPU.
05-02-2012 06:30 PM
Maybe it was just the EX2 that came on the device.
I forgot to mention that all my 3560CG were initially running EX2. I use ZeroTouch to upgrade all of them to EX3 plus slap a configuration template on them.
05-02-2012 09:10 PM
Ah! Found another one... will just update IOS this time (already disabled unused SFP port) and see if that gets the CPU lower than 47%.
zyz-white#sh interfaces gigabitEthernet 0/1 | include rate Queueing strategy: fifo 5 minute input rate 24731000 bits/sec, 2758 packets/sec 5 minute output rate 2924000 bits/sec, 1538 packets/sec zyz-white#sh ver | include EX Cisco IOS Software, C3560C Software (C3560c405ex-UNIVERSALK9-M), Version 12.2(55)EX2, RELEASE SOFTWARE (fc1) BOOTLDR: C3560C Boot Loader (C3560C-HBOOT-M) Version 12.2(55r)EX1, RELEASE SOFTWARE (fc1) System image file is "flash:/c3560c405ex-universalk9-mz.122-55.EX2/c3560c405ex-universalk9-mz.122-55.EX2.bin" * 1 10 WS-C3560CG-8TC-S 12.2(55)EX2 C3560c405ex-UNIVERSALK9-M zyz-white#sh processes cpu sorted CPU utilization for five seconds: 45%/31%; one minute: 47%; five minutes: 47% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 135 652688748 130171328 5014 7.39% 7.15% 7.09% 0 Hulc LED Process 80 199796523 163931519 1218 0.79% 1.20% 1.12% 0 HLFM address lea 196 25710741 79047519 325 0.29% 0.33% 0.35% 0 Spanning Tree 66 11734741 2447998 4793 0.19% 0.15% 0.14% 0 Adjust Regions 10 11917385 50175794 237 0.19% 0.26% 0.23% 0 ARP Input 82 1004611 164714671 6 0.09% 0.03% 0.00% 0 HLFM address ret 182 2636107 11078867 237 0.09% 0.03% 0.00% 0 ADJ resolve proc 211 2997298 6116886 490 0.09% 0.01% 0.00% 0 PI MATM Aging Pr 8 16351509 102001 160308 0.00% 0.14% 0.16% 0 Licensing Auto U 7 0 2 0 0.00% 0.00% 0.00% 0 License Client N
05-04-2012 04:26 PM
Updating OS didn't help that much. Really, it took chaning the device to an NSSA. Looks like the 3560C is just barely a Layer 3 device... Hopefully, this solves the packet loss we were seeing through the device.
05-04-2012 05:53 PM
Hey Rudy,
Just a stupid question: Do you see the CPU utilization go down when you console/Telnet/SSH into the appliance?
12-01-2019 10:47 PM
Yes, i'm having the similar issue while i'm SSH the device utilization goes normal.
12-02-2019 12:31 AM
Hello,
can you post the running config of your 3650 ? There are a few bugs related to specific features...
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