02-27-2017 12:59 AM - last edited on 03-25-2019 04:42 PM by ciscomoderator
Hi Friends,
I am facing high CPU utilization issue in cisco 2960X switch.
Please go through the below log
switch#show processes cpu monitor | exc 0.0
CPU utilization for five seconds: 80%/1%; one minute: 80%; five minutes: 80%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
160 967585239 320640728 3017 58.28% 58.50% 58.58% 0 Hulc LED Process
218 127173668 460391237 276 1.08% 0.96% 0.95% 0 Spanning Tree
125 834 802 1039 1.01% 0.42% 0.18% 1 SSH Process
130 63925216 12915197 4949 0.78% 0.73% 0.72% 0 hpm counter proc
231 23800851 12818335 1856 0.41% 0.46% 0.46% 0 PI MATM Aging Pr
6 22790122 2397018 9507 0.35% 0.16% 0.12% 0 Check heaps
89 20313684 495743197 40 0.23% 0.24% 0.24% 0 RedEarth Rx Mana
88 19201526 493309651 38 0.23% 0.30% 0.30% 0 RedEarth Tx Mana
191 9736765 12096529 804 0.17% 0.15% 0.17% 0 CDP Protocol
172 24084773 15379662 1566 0.17% 0.15% 0.17% 0 HRPC qos request
98 6488182 64554392 100 0.11% 0.13% 0.12% 0 apm86xxx_enet_pr
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
Please suggest the cause and solution for this.
As this switch is running in stack with IOS image: c2960x-universalk9-mz.152-2.E5.bin.
Thanks
Ganesh Prasad Gupta
Solved! Go to Solution.
02-27-2017 01:24 AM
Hi
that's a known issue on these platforms , if you search the forum its been opened quite a few times , seems very high though on your output I would move off that ios version to start with
c2960x-universalk9-mz.152-2.E6.bin
Symptom:
Hulc LED Process uses 6-23% CPU on Catalyst 2960/2960S/2960X 24 or 48-port switch.
Conditions:
The CPU utilization for Hulc LED Process will be in the 6-23% range for the
Catalyst 2960 series like 2960, 2960S, 2960X switch models.
For WS-C2960X-48LPS-L which is 48ports PoE 2960X switch Hulc LED Process
Could reach about 22%-23%.
The is seen in 12.2(50)SE03 or later releases.
Workaround:
This is an expected behavior and there is no workaround.
Further Problem Description:
The "Hulc LED" process does following tasks:
- Check Link status on every port
- If the switch supports POE, it checks to see if there is a Power Device (PD)
detected
- Check the status of the transceiver
- Update Fan status
- Set Main LED and ports LEDs
- Update both Power Supplies and RPS
- Check on system temperature status
02-27-2017 01:24 AM
Hi
that's a known issue on these platforms , if you search the forum its been opened quite a few times , seems very high though on your output I would move off that ios version to start with
c2960x-universalk9-mz.152-2.E6.bin
Symptom:
Hulc LED Process uses 6-23% CPU on Catalyst 2960/2960S/2960X 24 or 48-port switch.
Conditions:
The CPU utilization for Hulc LED Process will be in the 6-23% range for the
Catalyst 2960 series like 2960, 2960S, 2960X switch models.
For WS-C2960X-48LPS-L which is 48ports PoE 2960X switch Hulc LED Process
Could reach about 22%-23%.
The is seen in 12.2(50)SE03 or later releases.
Workaround:
This is an expected behavior and there is no workaround.
Further Problem Description:
The "Hulc LED" process does following tasks:
- Check Link status on every port
- If the switch supports POE, it checks to see if there is a Power Device (PD)
detected
- Check the status of the transceiver
- Update Fan status
- Set Main LED and ports LEDs
- Update both Power Supplies and RPS
- Check on system temperature status
04-12-2018 01:17 AM
Hey Mark,
That response was helpful.
I was just wondering is this known issue fixed in any of the latest version.
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