Cisco 2960x high cpu utilization. vManage shows real-time CPU utilization for a device.
Cisco 2960x high cpu utilization I am showing my last 5 second sorted utilization of the router. Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; Permalink; When High CPU Utilization Is a Problem. Does the CPU rise when bringing up one of the other interfaces? Further steps for troubleshooting: show processes cpu-usage sorted non-zero - identify the process taking up the most of the CPU show interface - check for input or output errors show traffic - check interfaces with unusual high traffic . These are minor bugs not affecting forwarding. But from past few days CPU utilization is going very high(80%). The 9800 web UI homepage has a CPU trend widget which shows you the utilization of each CPU core. As explained later in this paper, one can set up SNMP-based alerts in their health policies, and that can be utilized to integrate this solution with any existing SNMP-based monitoring process that already exists in The reason for reported high CPU usage when the device performs normally with normal, low, or no load is due to a change in the formula used in order to calculate usage. This is the output of 'show proc cpu' when I login. I have quite a few 2960's in a manufacturing environment that are experiencing a large number of Total Output Drops. C2960X High CPU due to HULC DAI and LED processes, PID: WS-C2960X-48FPS-L , IOS : Version 15. Any Hi, I have noticed that our cpu jumped from 10% to 30% instanlty and 2 days ago from 30% to 50% Below the output: Core 0: CPU utilization for five seconds: 77%; one minute: 83%; five minutes: 83% Core 1: CPU utilization for five seconds: 20%; one cisco WS-C3650-24TS (MIPS) processor with 4194304K bytes of physical memory. Hulc LED Process uses 6-23% CPU on Catalyst 2960/2960S/2960X switch CSCtg86211 Description Symptom: Hulc LED Process uses 6-23% CPU on Catalyst 2960/2960S/2960X 24 or 48-port switch. 1 CPU utilization on process level = X - Y. Earlier we were getting continuous spikes in CPU utilization in all switches due to HULC LED, IP SNMP ,SNMP ENGINE & STP Processes. We are using one EBGP and one IBGP session. We pulled the same config from the 2960X and now the 3850 is hitting 90%+ CPU. If all of the VLANs are allowed onto the AP, it may result in high CPU utilization and hence the connectivity may get affected. To find CPU usage due to the subprocesses and tasks operating under a specific process, use the show process cpu detailed command. This is the output of 'show proc cpu' 2 mins later. CSCus46997 Memory Leak and High CPU in IP Host Track and Auth Manager. Like 1. Logging to a host (or monitor logging) generates additional traffic on interfaces. I solved HTTP CORE high CPU utilization issue using your suggestions. Dear, I'm look my switch of access and identifed that I/O memory is bigger that 80% of utilization. Introduction. I have gone through many documentations and forums and for now I haven't found the right solution for this problem. 12. The Catalyst 9800 can sometimes display a high CPU utilization on given CPU cores. I just noticed there is high cpu rate even the nothing is connected. Hi all, I have planned to change all oldest access switches with 2960X. It had increased recently and going till 75%. SPA. These sections tell how to identify high CPU utilization and determine if it is a problem: Normal Conditions with High CPU Utilization; Network Symptoms Caused by High CPU Utilization; Determining Interrupt Percentage; In some instances, high CPU utilization is normal and does not cause network problems. 34% 36. 02E RELEASE SOFTWARE (fc1) show proc cpu sorted | ex 0. 29% 0 Cat4k Mgmt HiPri 41 30929587802851505705 1084 36. 0 Core 0: CPU utilization for five seconds: 12%; one minute: 12%; five minutes: 12% Core 1: CPU utilization for five s Sometimes high CPU utilization is observed on the Cisco Access Point (AP). 12: 311: The CPU load is doing load-balancing? There is a process that always generate load and the interface output drops increase. we had a couple of old 3750 switches were getting high cpu in the past, https service are enabled. See the attached process output. 0 Please note that only cisco Nexus 3064 Chassis ("48x10GE + 4x40G Supervisor") Intel(R) Celeron(R) CPU P4505 @ 1. When I checked I found that the below processes are taking the highest utilization. The freezes that I mentioned was the switch was totally "hang" and impact to network connectivity which will require to restart the switch. This Tcl command extension is supported only in Software Modularity images. My CSW is constantly running at 90% and the other 2 are up in 40%/50% area with most of the usage coming from something known as HULC DAI Process. Kindly help me to reduce the CPU utilization in switches. Below the output of the show processes cpu sorted detailed: it-zo-dc-sw-1#show processes cpu sorted detail We've got a Cisco 2811 that experiences periods of extremely high cpu usage. 2(18)SXF16 with search key high cpu on bug toolkit. will it fix the issue by turing off the https Taking into account that much of today's IOS has Linux blood in it's veins, that's not hard to imagine. The CPU is receiving too many packets from the network. Solved: We have many Nexus 3064 switches that have high CPU utilization. CSCdz83100. 75% 0 Hi . The process taking around 15% is called Hulc LED Process. Buy or Renew. 2% cisco-sg350-28 firmware: 2. How will c Among the options available to monitor the CPU utilization, the FMC health monitor is the best option to monitor the device for high CPU utilization cases. Hello everyone, Since the time we configured PBR, I am experiencing high CPU utilization on our core switch. Even without connecting a single PC to switch, CPU utilization is showing 22 %. It is very important to identify if it is really a high CPU software problem or a dataplane symptom you can ignore. We have several 2960x stacks but have only seen this issue on this stack. Please note that the high CPU 7 Utilization in "ucode_pkt_PPE0" for 9800 IOS-XE 16. where CPU utilization was high due to polling requests for BGP tables. Mark as New You might also examine the The Catalyst 9800 can sometimes display a high CPU utilization on given CPU cores. The count for that location in memory is incremented. i saw some strange loggs. vManage shows real-time CPU utilization for a device. 2 Values do not represent an arithmetical average, but an exponentially decayed average. This switch has nothing connected except for console and power. Understanding System Message Logging By default, a switch sends the output from system messages and debug privileged EXEC commands to Solved: Hi guys, We have issue with the Core Switch C4506 utilization. However the list of processes total up to less then 25%. The gigabit uplinks arn't even close The common observation is that the CPU utilization output for the show processes cpu command on the 2900XL/3500XL switch shows a fairly high value when the switch is idle and has no active ports. High CPU Utilization In Cisco Switch 2960X - Version 15. CSCtz06177 A catalyst 2960 may run low on memory. I was able to console into it this time when it went down to try and determine the issue. I think it is due to NTP synchronization mismatch. Prerequisite Requirements. If all of the VLANs are allowed onto the AP, it may result in high CPU utilization and hence the A capacity issue is one of the symptoms of high CPU utilization on Cisco IOS routers. Share some images Use of EEM Scripts to Monitor High CPU Utilization on Cisco Catalyst Series Switches 22/Nov/2017; VLAN Load Balancing Between Trunks Using the Spanning-Tree Protocol Port Priority 30/Aug/2005; Cisco Small Form-Factor Pluggable (SFP) Transceiver Modules Maintenance and Troubleshooting (PDF - 345 KB) 23/Sep/2014 I have a high cpu utilization problem too. Chinese; EN US Hello Everyone, Over the last 2 weeks, I've had 3 separate occurrences where a 2960X stack at a remote site goes down, and requires a reboot to restore connectivity to the switch and anything behind it. ? To avoid warning messages of high CPU utilization with a normal-range VLAN configuration, we recommended to have no more than 256 VLANs. Here I showed info for one switch, the other is in the same situation. Description. When i give the command show processes cpu, the command show me that the router is working in 98%. I was struggling with high CPU utilization problems happening on the distribution switch. 87GHz Hi, I have a Cisco switch Layer 3 2960x version 15. To sort for high activity usage, use show process cpu sorted command. 92% 99. Process such as Auth Manger and CPU - EPM ACL PLUG-IN are very high. I am not able to find out why utilization is going this high. Recertification. Note: Total CPU utilization must not be used as a measure of the ability of the router to switch Troubleshooting High CPU Utilization on Cisco Routers; SNMP Community String Indexing; Simple Network Management Protocol Index; Cisco Technical Support & Downloads; Revision History. 33% but why the cpu utilization is 91 % for 5 minutes (It was 99% for a few minutes ago ) DC-Pri#sh I have a high cpu utilization problem too. 1. Stop the flow, or change the switch configuration. 03. If the CPU is busy 5% of the time then the CPU is idle the other 95% of the time. Email Alerts Append Output to Local File Append Output to Local File and Remove Script subsystem in order to monitor high CPU utilization on Cisco Catalyst series switches. 6 with no issue but in one case Hi, I've got a problem with two C4500-switches. Information of switch: Switch Ports Model SW Version SW Image Hi all, I have issue here where the switch free memory only left about 17% . We are unable to reduce the same. CPU utilisation also peaks to 90 - 100% sometimes. Last month I had updated the VTP(using VTP version2) configuration of all the switches from client mode to transparent mode to overcome the high cpu utilization due to STP, IP SNMP & SNMP ENGINE processes. Hello, Cisco Community! We've encountered high CPU utilization issue on our 2x3650 stack. It is showing high CPU utilization upto 80-90%. Hi, We see very high voulume of the memory and CPU utilization alarms. Hi . Please see the below loggs and advice Core1#sh ver Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I5S-M), This can create a problem, especially when applied to a huge network. They both utilizing high CPU and the process thats responsible is IOSd (100% CPU on 1 core) These 4500 are in two seperate networks with no physical connections to each other. 1421#sh proc cpu sort | ex 0. I have multiple 3850's running 16. com. How will c Documentation > Cisco IOS Software > 12. 53% 0 Xscale Sibyte Co. After some cleanup we're now averaging between 40-50%, with spikes rarely over that except on a config change. 2(18)ZY2 to 12. 0. How to identify the Unneccessary processes are runing and causing high CPU utilization. I have vlans like voice vlan and others, I have one 20 Mb Wan Link and I redirect all traffic from my lan to this link and when i browse in internet or i do downloads the router goes to 98%, when i don't make it the Hi all, I have a stack of 4 Catalyst 3850-24X working as a distribution switch, lying in between a Nexus 7K core switch and 34 C3850 access switches/stacks. Complete these steps in order to perform CPU profiling. 4 and higher is expected behavior to improve packet throughput and reduce packet latency and jitter, this increases the number of CPU cycles that "ucode_pkt_PPE0" process consumes at baseline even without any I am using snmp to monitor CPU utilization on the following cisco devices, ASA 5545, catalyst 2960 and wireless controller 2504. It appears when any traffic longer than few seconds is started. When I run "sho proc cpu sort" it shows the cpu at 98%/84% for instance this morning. " Before I made changes, the switch was showing 37% CPU utilization, mostly from the Hulc LED Process. eitherway, you need to find whats causing the packets to be punted to CPU. We swapped it out and everything was stable for a while. Thus, more recent values have more influence on the calculated average. Cause. Logging to a console raises unnecessary interrupts to the CPU and increases the CPU utilization. IOS daemon IOSd, and Wireless Controller Module (WCM) processes have the highest CPU utilization. EN US. We were just trying to configure switch. We are on version 6. Below the output of the show processes cpu sorted detailed: it-zo-dc-sw-1#show processes cpu sorted detail Hi, I have problems with the Router 2801. 99% 0. Is it rates is normal ? It looks We have a 2960X that has been giving us issues for a while. Normal cpu utilization was upto 20% earlier. It shows my highest utilization for a process id is . We have Cisco 6880 platform where you will see "Slcp Process" is always high and most of the customer considers this process is CPU intensive. Level 1 Options. An example is a cisco 4500X switch with a sample of the configs shown below. Community. 14-Dec-2001. Table 3 Troubleshooting CPU Utilization Problems; Type of Problem. CSCek78237. BRM_HQ_CSW_01#sh proc cpu sort Core 0: CPU utilization for five seconds: 1%; one minute: 4%; five minutes: 23% Core 1: CPU utilization Dear All, I have 200mb live traffic running on Cisco 3845 router. I understand that this problem is because of Process switching which is resolved by enabling fast sw high CPU, so it is important to monitor each core when running these commands. I upgraded the firmware from 16. Solved: Dear concern, Our Router 7606 is in a problem with high CPU Utilization. 2. Currently I am able to login to the router without any issues but the utilization is getting nearer to 80% sometimes. Caution Logging messages to the console at a high rate ca n cause high CPU utilization and adversely affect how the switch operates. The 9800 web UI Hi Sweta, please see the below output of "sh logg". Anyone can help me? Thanks The CPU load is doing load-balancing? There is a process that always generate load and the interface output drops increase. Some can help me about how works the CPU of members stack and the cause about drops. Sometimes my C-3900 router behaves abnormally. I have tried to unmanage device using SNMP and checked, still no help. We are getting the following processes when the CPU is high and they causing high CPU utilization , 6 72013880 4251984 16936 7. The debug process can be started with the debug ip packet detail exec command. Is there a way to see which process it is? On our Cisco 3750 there can Hi Guys, Any idea about this log?????reason of high memory process??? S3# show processes memory sorted allocated Processor Pool Total: 21988468 Used: 18066488 Free: 3921980 I/O Pool Total: 4194304 Used: 2523052 Free: 1671252 Driver te Pool Total: 1048576 Used: 40 Free: 1048536. When the CPU is too high, we cannot join the switch, the ping is too high (between 500ms and 2100) and users complaining about network spikes. Due to this issue,we are facing too much latency. After a number of attempts to resolve this issue failed and even Method 5: With Cisco TAC support: Use CPU profiling; Method 6: UBR10k: use “show snmp cpu-stats” Appendix A: Use an EEM script to capture a CPU profiling during high CPU; Appendix B: How to create an SNMP view . Can anyone help me identify the problem? Hi all, I have a stack of 4 Catalyst 3850-24X working as a distribution switch, lying in between a Nexus 7K core switch and 34 C3850 access switches/stacks. 1x configuration. And raised to above 60% after logout. INFO: Processor memory or main memory stores the running configuration and routing tables. bin file to a Cisco 2960x switch. 56% 11. Here's the output from the show proc cpu: 6506_A#sh proc cpu CPU utilization for five seconds: 79%; one minute: 81%; five minutes: 78% PID 5Sec 1Min 5Min Process 1 0. The memory allocated is almost all Packet Data, by init, "sho memory io dead" returns zero, the memory usage seems constant, there are no errors on the log, the switches operate correctly, no packet has ever been dropped, cpu usage is about 4%. This document describes how to use the Cisco IOS ® Embedded Event Manager (EEM) subsystem in order to monitor high CPU utilization on Cisco Catalyst series switches. Hi all, I implemented a new Cisco VSS composed by two 4507R+E in quad-supervisor architecture. Hulc LED Process uses 6-23% CPU on Catalyst 2960/2960S/2960X switch Last Modified Apr 06, 2016 Product Cisco Catalyst 2960 Series Switches Known Affected are you saying when its high other times that's not the process causing Earlier we were getting continuous spikes in CPU utilization in all switches due to HULC LED, IP SNMP ,SNMP ENGINE & STP Processes. Could reach about 22% Shows percentages for CPU utilization and CPU time spent on interrupts and lists the most active system processes in order of CPU utilization. Other switches or stacks do not show any symptoms. High CPU Utilization ladopetrucci. I was thinking it was like traffic related, but from the "troubleshooting high cpu usage" whitepaper that cisco provides, the interrupt percentage is low, which indicates its not a network traffic hello, i always observe more than 80% I/O memory utilization in my switches as shown below Processor Pool Total: 60627512 Used: 44893596 Free: 15733916 I/O Pool Total: 14680064 Used: 12439436 Free: 2240628 Driver te Pool Total: 1048576 Used: 40 Free: 1048536 PID TTY Allocated Freed Holding Getbuf High CPU rates due to Hulc LED Process on latest 2960X switch lanvernier. 2 Mainline > Command References. Greeting All, In our topology, we are getting huge CPU Utilizations in L2 and L3 switches. Switch 1 was fine and took 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. There are a lot of bugs regarding that process and no workaround. I'm trying to find what is causing this, but still nothing, Router is cisco 2921/K9 with IOS c2900-universalk9-mz. 5b w Hi Experts, I am experiencing high cpu utilization in my 4000 series core switch. The debug snmp command checks which Object IDs (OIDs) or Management Information Base (MIBs) are being queried at the time. This can create a problem, especially when applied to a huge network. High CPU on a Cisco router may be defined as the condition where the CPU utilization on the router is above the Hello, Yesterday afternoon one of our 4506 switch climbed up to 96% CPU utilization. 80657%. . It looks like the problem is CPU inturrupts. Most time we spend is to configure the switches but for better Buy or Renew. 31 % for 5 seconds and 1 min it is 0. Peaks often reach 100%. 02. Thanks in advance! Processor Pool Total: 21988468 Used: 18315880 Free: 3672588 I am trying to figure out why running the netdiscover process from a Kali Linux device plugged into a 2960x causes high CPU utilization. Solved: Dear all We are encoutering high CPU on multiple Catalyst 2960-X stacks causing management latency and SNMP loss. 83% 0. We swapped it out This document describes how to troubleshoot high CPU usage concerns, primarily due to interrupts, on the new Cisco IOS®-XE platforms that run 16. After restarted, switch "hang" issue had been resolved and I try to check the log and cpu process which does Solved: Good day, We have a router (Cisco 2900 Series ) and we are terminating L2P VPNs (VPND) on it. When viewing the output of the show processes cpu command, the highest percentage processes are Port Status Proc (Port Status Process) and LED Control Proc (LED Spikes of high CPU utilization on the Cisco Nexus 5000/5500 switch is normal activity. I saw a bug in the older IOS 16. 2 releases, CPU utilization is computed based on the Load Average from show system status on the vEdge. Solved: Hi all, We are seeing high CPU utilisation (70-80% and higher!) on a switch stack and I have done a little digging!! I have found the following which seems a little high to me: stac11-chil-gbr#show processes cpu sorted CPU utilization for EEM to capture data in event of CPU spike on 2960X. 6. high CPU utilization (IOSd) on C4500. All interfaces are shutdown and all copper interfaces are configured "power inline never. Note that excessive CPU utilization might result in these symptoms, but the symptoms could also result from other causes. This happened with the default value of igmp snooping which is enable then i turn it off and was ok for about two weeks, then yesterday h Queries the CPU utilization of the top processes (both POSIX processes and IOS processes) during a specified time period and in a specified order. 4% 4. This behavior described in CSCtg86211 and is expected for catalyst 2960x switch models. The show system resources command displays the high level CPU utilization for the supervisor module. Prerequisites Requirements This document assumes that user has knowledge of Cisco IOS Embedded Event Manager (EEM Hi Joseph, thank YOU for the "eye-opener" from the perspective of a software developer! It's really interested to learn about the relative priorities between processes. Hi, There is frequent high utilization noticed on Cisco 2900 router which is in our network. CPU usage can be monitored Hello, We are experiencing high CPU utilization on WS-C3650-24TS switch. Prerequisites Requirements. Can anyone help me identify the problem? HI team, we are getting high cpu utilization on 2901 router but same configuration while switchover to cisco 2911 router is working fine. This IOS release date is 17-FEB-2016 and the CPU utilization is still High CPU with 2960x Stacks and 802. 2(2)E5 with High CPU. Note: Total CPU utilization must not be used as a measure of the ability of the router to switch 1 CPU utilization on process level = X - Y. Spikes of high CPU utilization on the Cisco Nexus 5000/5500 switch is normal activity. A 28MB file takes 15 min+. PID TTY Allocated Freed Holding Getbufs Retbufs Process Solved: Hi everyone. Is this is the cause of the high CPU utilization on some time. Contributed by Cisco Engineers. I haven't done any configuration changes. When you add up all the process totals it is around 60% CPU. 2(4)E7 , DAI is disabled , 27 ports currently connected, looking for a workaround/fix to reduce CPU. 1. Cisco shows fed (PunjectRx and Xcvr) process is mostly consuming the CPU. Hi, I have noticed that our cpu jumped from 10% to 30% instanlty and 2 days ago from 30% to 50% Below the output: Core 0: CPU utilization for five seconds: 77%; one minute: 83%; five minutes: 83% Core 1: CPU utilization for five seconds: 20%; one minute: 30%; five minutes: 31% Core 2: CPU utiliz Among the options available to monitor the CPU utilization, the FMC health monitor is the best option to monitor the device for high CPU utilization cases. 2(18)ZYA and switch booted, the following process was utilizing CPU at 99%: 140 3426368 21182 161758 99. M6. As explained later in this paper, one can set up SNMP-based alerts in their health policies, and that can be utilized to integrate this solution with any existing SNMP-based monitoring Hi, We are experiencing very high cpu utilization on our 6509 switch, is there any possibility we can fix the issue ? sh proc cpu CPU utilization for five seconds: 77%; one minute: 75%; five minutes: 60% PID 5Sec 1Min 5Min Process 1 0. 87GHz with 3665240 kB of memory. The Cisco IOS software Hi I have stack Switch with 3 Unit members with High CPU, according to the "show processes cpu" the proccess with more consumption are SISF Switcher Th and SISF Main Thread 426 38181448 7673019 4976 35. CSCsa51770. Determine if a CPU utilization I am trying to transfer a new . MEMORY ANALYSIS----- INFO: Processor memory utilization is 41. 3. This is why even in the This IOS release date is 17-FEB-2016 and the CPU utilization is still pretty high. In Cisco C2960X, CPU utilization is going to >90% Current Switch IOS version is 15. There are two probable causes for high CPU utilization occuring in relation to Simple Network Management Protocol (SNMP): Large route and/or ARP Hi, I have 4 Catalyst 2960S, and they have the same problem. Multicast pkts should not be policy routed in CEF Info Information on this bug. 60 five seconds: 100%; one minute: 100%; five minutes: 100 Input Rate to CPU is 5 pps Hello, we have permanent 100 percent cpu usage on the switch. CPU utilization has be done when you are experiencing high CPU utilization. 17% 29. 0 CPU Solved: We've just started to implement changes on our switches so we can use ISE for authentication and on a switch stack of 6 switches I logged on did int range gig1/0/1 - 48 and copied the below config to the switch. Configuration of RSPAN on 12. Cisco Community; Technology and Support; Networking; Switching; 2960 switch high cpu; Options. The image in the switch is LAN base. Che I solved HTTP CORE high CPU utilization issue using your suggestions. Processes eating CPU are: ARP Input, SISF Switcher Th, SISF Main Thread Issue is happening only on working hours, so likely that connected to user activity. Possible Symptoms of High CPU Utilization . In such cases, approximately 10 access interfaces or 5 trunk interfaces can flap simultaneously with negligible impact to CPU utilization (if there are more interfaces that flap simultaneously, then CPU usage may be Hi, We have a problem with a 6506-E which is having a high CPU utilization. For Cisco routers 800-3800 series CPU load up to 50-80% and memory utilization up to 50-70% in highest working load is normal condition. Please explain. 2(2)E. Core Router CPU - What's too high? Networking. The graph minute and hourly graphs show it. 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. 152-4. I reloaded again and now all seems to be OK. cisco Nexus 3064 Chassis ("48x10GE + 4x40G Supervisor") Intel(R) Celeron(R) CPU P4505 @ 1. I've seen different Here is the same response from Cisco wireless team. Catalyst 2960 series like 2960, 2960S, 2960X switch models. It started with the switch losing connectivity frequently which we identified to be a bad SFP. 2% I am using snmp to monitor CPU utilization on the following cisco devices, ASA 5545, catalyst 2960 and wireless controller 2504. I have a customer with stacks of 2960-x switches which have high CPU once . 2(7)E3 . As far as I can see the problem affects only one of the 3750X stacks (the most central one) and one 2960X stack. Cisco recommends that you understand the ASR1000 architecture to interpret and utilize this document. Does anyone having this issue before? Attach below the output for show processes memory sorted, switch model and IOS version. Let me you 22%of CPU for "Huld LED" process is not considered as high CPU in first place. It is recommended to disable MIBs for BGP polling on routers in large ISPs, in addition to disabling BGP polling on the NMS application. On a test one, monitored by PRTG, CPU is always around 40% as the old 3560's are 8% CPU usage. of this document to investigate the traffic using the EPC to Troubleshooting High CPU Utilization 16/Mar/2016; Troubleshooting Power over Ethernet (PoE) 23/Aug/2010 Hulc LED Process uses 6-23% CPU on Catalyst 2960/2960S/2960X 24 or 48-port switch. I have been reading some discussions regarding this process, and also some Cisco documentation, and I have the INFO: Issuing commands that generate long output, such as 'show tech-support', can also increase the amount of CPU resources used by the virtual EXEC process. Spanning tree topology changes I made a search for release 12. Here's the behavior: # show processes cpu history 1 1 2 1 21 1 121 1 12 1121 2 14 121111 Solved: Hi I have a router 2800, The problem is high CPU utilization especially for "check heap" My question is, hardware failure? Like the memory or need change the router Find information about the topic but I do not understand I believe that this bug, or a variation of it, is present in 16. discussion, cisco. In the attachment you c Solved: We have many Nexus 3064 switches that have high CPU utilization. 5b w Hi All Help me Switch 3650 (WS-C3650-24TD) Cisco IOS Software, IOS-XE Software (CAT3K_CAA-UNIVERSALK9-M), Version 03. On before said stacks we have a permanently high CPU utilization between 98% and 100% since 5 days now and there is also a high number of CPU interrupts of about 15%. 07. This utilization does not affect client traffic and does not influence on services and rest protocols of the switch. This document assumes that user has knowledge of Cisco IOS Embedded Event Manager (EEM). I have a 2960 switch connected in my network. To be more precise, I solved issue with this: "4) If you are using http and if the issue was due to HTTP request to the switch, the command "no ip http secure High CPU utilization in the Address Resolution Protocol (ARP) Input process occurs if the router has to originate an excessive number of ARP requests. The CPU usage is 60% before I telnet them. Based on the below commands, I see the following outputs. In the stacked switch, the CPU utilization is measured on the master switch only. Can someone please advice on why I am having high utilization on the switch for the below processes and how can I reduce it. We are a little concerned about many high peaks regarding CPU utilization on a Cisco Nexus 7k (version 6. show version|inc software|uptime|Last Cisco IOS Software, IOS-XE Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 03. The system works by sampling the processor location every four milliseconds. cpu usage is high Conditions: when logging persistent size filesize is running with a lot of We encountered this wired high cpu case with the 2960x stacking switch, which is caused by logger. Hi Sweta, please see the below output of "sh logg". 56% 37. 2(18)ZYA and switch booted, the following process was utilizing CPU at 99%: 140 3426368 It gives possible causes and corrective action with links to the Troubleshooting High CPU Utilization document on Cisco. HTH. ? The High CPU is due to Interrupt, which means, normal data packets are possibly punted to CPU or some kind of DOS attack is happening. bin this is output of trouble shooting commands, what Troubleshooting CPU Utilization Problems; Type of Problem. 06 to 16. I read a Cisco article on how to tackle high CPU utilization problem related to IP Input. We have a 2960X that has been giving us issues for a while. 53% 99. Here's the behavior: # show processes cpu history 1 1 2 1 21 1 121 1 12 1121 2 14 121111 Hi, We see very high voulume of the memory and CPU utilization alarms. Networking. Upon taking a look to the CPU Process, device is punted with 75 - 85 % at normal usage, with "Hulc LED Process" as 18% utilisation. Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; I have problem with my router cpu utilization. Is there any. We are also running OSPF with area 0 between two IBGP router to exchange few local networks. What can be the root cause and how do I fix it? # sh proc cpu s | ex 0. 7 as well. Log In. The show process cpu command with the sort option displays all of the processes sorted by the highest CPU utilization per process. 23-Feb-2024. Corrective Action. Clients associated to the Access point will face throughput issues and sometimes high CPU utilization can also bring the Wireless network down. A few days ago this issue was more critical as we were seeing CPU averaging 80+%, with many spikes in the 90's. The root cause of this CPU utilization will be determined by CPU Profiling. 0(2)U6(6). I attach the processes. I I have a stack of 5 WS-C3850-48P running IOS 16. The router uses ARP for all hosts, not just those on the local subnet, and ARP requests are sent out as broadcasts, which causes more CPU utilization on every host in the network. Tip: For further details, refer to Cisco bug IDs CSCus46997, CSCtz06177 and CSCty49762. To kill the unwanted process using memory. Any particular reason for this? Can configuration affect the CPU utilization even though there is no PC connected? Please share the experience. any ideas? You can scroll down to Step 2. 96% 0 SISF Mai I have a stack of 5 WS-C3850-48P running IOS 16. Please disable Hi all, I have some question would like to check on the issue with high CPU utilization and causing the switch being freeze and unable to operate as expected. 1x configuration is applied on the interfaces. We have been fighting a high CPU issue with SISF switcher since upgrading to 16. By default, all the VLANs are allowed onto the AP from the switch to which the AP is connected. I've been doing some searching around and can't seem to come up with a good solid answer here. All 2960x switches are running 15. 0(2)SE11 . Bogdan We're seeing high CPU utilization on a 3750x core switch. The Catalyst 4500 is designed to forward packets in the hardware application-specific integrated circuit (ASIC) and Hello, Yesterday afternoon one of our 4506 switch climbed up to 96% CPU utilization. It fell to 20% when I using telnet to login. Could any one please help out to troubleshoot and get them resolved. Recently we purchased C2960X-24TD-L. We have a stack of 2960x switch (7 switches) and most of the time its at 99% CPU. 3 that the IOSD ipc task would max out the CPU. After the migration from the old core switch to the new, the CPU usage of the VSS raised to 100%. For WS-C2960X-48LPS-L which is 48ports PoE 2960X switch Hulc LED Process i dont know why on some switches the "Auth Manager" CPU utilisation is too high. 36% 29. I have a Cat6509 with Sup32-PISA-10GE and when I upgraded from 12. High CPU on ATM PA Helper process on PA-A3-T3 Info Information on this bug. Could you confirm any differences are there at throughput level or any other reasons are there Pls suggest on Hi all, I implemented a new Cisco VSS composed by two 4507R+E in quad-supervisor architecture. More recently it has begun giving us high CPU utilization warnings and spiking to 99%. Hello Everyone, I am facing this problem with all my switches, The igmp snooping queue drop value increment fast and cause high cpu usage for long time, over 90%. For details, refer to the show commands Reference Guide. What are the possible reasons which are resulting in High CPU utilization issue ? How Solved: Hi everyone. Doing sh proc cpu sort shows that the CPU is mainly busy due to SISF processes : #sh proc cpu sort CPU utilization for five This IOS release date is 17-FEB-2016 and the CPU utilization is still pretty high. Revision Publish Date Comments; 2. However, a capacity issue is almost never a symptom of high CPU utilization with hardware-based forwarding switches like the Catalyst 4500. 2(2)). Can someone please help me obtain the required mib files of the corresponding devices or oid for monitoring cpu utilization. 2(3)E. Initial Release. SE RELEASE Hello I'm writing regarding an issue of high CPU utilization that I have on a Cisco Router 2911. Running the EX4 release. CSCty49762 EAP Framework and AAA AttrL Sub Uses All Process Memory . Here are the processes that have high CPU utilization 40 36630921841089949084 3360 8. Interrupt percentage value is almost as high as total CPU utilization value. And My issue is that on my Core switch 2 x stack, 1 x DSW (3750 X), 2 x FE 24 Port stacked switches, I have very high CPU usage on all 3 (Counting stacked switched as one). 1% 1. We tried disabling ip dhcp snooping on user VLANs and The better solution in this case is to ask directly Cisco about this router and how it behaves with such configuration. Note: Running a debug over a production network may overwhelm the router. 17: 87: March 27, 2014 How to crank up CPU utilization Cisco Switch. Model :WS-C2960-48TC-L IOS Verison :15. Switch # sh processes cpu sorted CPU ut I see high CPU utilization seems to have been an issue for a couple years. Swtich 2960x , 4 members stack. Whenever I do this the CPU spikes to 100% and the maximum transfer rate is 35KB/s. Below i mention some inputs. 2(18)SXD3 causes high CPU. 3. 11% 0 SISF Switcher Th 427 49356123 7068699 6982 49. That way, the command show process cpu and its derivatives don't show us actual CPU usage, but something closer in spirit to Linux load average: a decaying average over three time windows, in case of Cisco IOS - 5 Sec, 1 Min, 5 Min. 7 as well and initially applied this to just the trunk links as described. I checked the loggs. We use ISE and dot1x for port authentication and as soon as I add any authentication commands to a switchport while netdiscover is running, the CPU on the switch s Solved: Dear all, I have a stack of 4 WS-C3750X-48P-S running 15. Determine the source of the network packet. 3% Hi We are facing a weird problem of high CPU utilization on 3560 switch. Hi, We have a problem with a 6506-E which is having a high CPU utilization. Nils Sandborg. There are multiple background IOS processes running on timers that execute multiple times a second. To be more precise, I solved issue with this: We have the same issue year 2021 with CISCO 2960X IOS 15. A newer IOS has not been authorized yet for my company so upgrading IOS is not an option. So, i dont want to upgrade the iOS to the EX5 (too recent, and i dont know if bug with SPF and CPU are fixed). 6 with no issue but in one case It gives possible causes and corrective action with links to the Troubleshooting High CPU Utilization document on Cisco. Logs : idf0a. Now CPU processing of the stack is very high and it causes the packet loss. Had a Cisco TAC case open for a couple of months Hello Support Please inform me on how to prevent high cpu ulization on a cisco device. These are some Obtain CPU and Core Processor Usage Step 2 Use the show process cpu command to display CPU and core processor usage. This is incorrect. 63% 10. Fixed 2. 0(2)EX5 Lee Win Neng. 2 SE10, which on average has a 20% CPU usage for the Hulc LED Process. Taking a look at the cpu histor Solved: We have two 24 port 3850 switches stacked. Spanning tree topology changes This document describes how to troubleshoot high CPU issues on an ASR1000 series router. With the 17. The switch will never report CPU utilization at 0%. When bandwidth cross 100 MB Solved: Hello, We are experiencing high CPU utilization on WS-C3650-24TS switch. x. High CPU utilization due to FED and punjectrx. ixxfchg tvrtz ubzujsb bloonbi ecjd emynig vilac fkk anvtf rmjgj