We have two 24 port 3850 switches stacked. Supposedly I should have been a flood of multicast . Refer to Catalyst 6500/6000 Switch High CPU Utilization to clear the root cause. This script emails an alert when CPU utilization goes above 50 percent. We pulled the same config from the 2960X and now the 3850 is hitting 90%+ CPU. 10. 簡介 背景資訊 案例研究：地址解析協定 (ARP)中斷 第1步：確定消耗CPU週期的進程 第2步：確定導致CPU使用率過高的CPU隊列 第3步：轉儲傳送到CPU的資料包 第4步：使. 6371 1716285 808412104 2100 73. Symptom: When abruptly reloading (eg: manual power cycle) or adding/removing a switch member from a 3850 stack, other switches in the stack may begin crashing on the FED (forwarding engine driver) due to a timeout on the SPI, which is the internal message-passing system that lets services communicate with one. xxxx. ステップ3:CPUに送信されるパケットのダンプ. Options. Linux will schedule a process (remember IOSd is a single process from the Linux perspective) on a CPU core based on a number of different factors, including utilization of the other cores at any given time. Check these issues: Interrupt switching is disabled on an interface (or interfaces) that has (have) a lot of traffic. 07. Externally found moderate (Sev3) bug: C-Closed . Wondering why the IOSXE-RP Punt Se process is fairly high on our SDA border nodes. 1. txt. High CPU Usage Caused by Process or TrafficHigh end routers (7000, 7500 series) have their buffers in main dynamic random-access memory (DRAM),. 0 cli command "show platform punt statistics port-asic 0 cpuq -1 direction rx | append flash:HG-CPUlog. Buy or Renew. CPU . 7. If you see high CPU utilization during the IPX Input process, verify the following: IPX fast-switching is disabled. Stack manager is a Linux€process that manages 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. #sh proc cpu sort | e 0. 4. 65% 0 SNMP ENGINEOptions. 0 cli show clock >> bootflash:high-cpu. Core 0: CPU utilization for five seconds: 99%; one minute: 98%; five minutes: 98%. Fed punjectRx The above two processes are consuming the major portion of the cpu. 6% of my total CPU power, I. Cisco bug ID CSCup49704€- 3850 FED Crash - Waits for SPI channelsWe have a switch stack with 2 x WS-C3850-48T that is hitting high CPU usage. . Either one of the options will not be good because Cisco has been been unable to fix a plethora of memory and CPU issues affecting IOS-XE. Symptom: SISF main thread or SISF Switcher Th process causing high CPU. Hi fellow network ninjas, We have c3850 (WS-C3850-24-T) running with ip services license and version 03. 109. 12. This release note gives an overview of the features for the Cisco IOS XE Denali 16. 5b without a noticeable change in CPU levels. 1. Note: Running a debug over a production network may overwhelm the router. PT-3850#show proc cpu sortedThe stack has been up for 1 Year and 16 weeks. txt" action 0. 6. A value for exit-val ensures that the script does not run in an endless loop. Contacts; Feedback; Help; Site Map; Terms & Conditions; Privacy Statement; Cookie Policy; TrademarksContacts; Feedback; Help; Site Map; Terms & Conditions; Privacy Statement; Cookie Policy; TrademarksMonitor High CPU via SNMP OID. Home; Documents; Troubleshooting Cisco Catalyst 3850 and 3650 Series. 3 to see if it helps but any suggestions would be helpful. show platform software fed switch active cpu-interface queue retrieved dropped invalid hol-block-----High rate app 994752082 994752082 0 0. 10-08-2013 09:30 AM - edited 03-07-2019 03:54 PM. VACL input and output ACEs are stored in a single region (TAQ). *" action 4 cli command "monitor capture tac_cpu control-plane in match any file location f. 32768, f04a. Stack manager is a Linux€process that manages the. CPU usage can be monitored on a per. 06% 389 SSH Process. This script monitors a SNMP OID used to read the CPU busy percentage in the last 5 seconds. Hello all, we are facing issue of HIGH CPU usage on 3850 switch. Identify the Process that Consumes CPU Cycles Step 2. 33 4. Symptoms of high CPU (SR 680000139) have also been seen to trigger this type of issue. What IOS version are you using? If, though, you have a high software forwarding CPU usage, that needs investigation. fed process is around 50% and pdsd process around 23%. 36% OOBnd RX = 16. 3850 是现在常用的思科交换机，有时候遇到CPU 使用巨高的情况，严重影响网络使用，那么如何排错呢？下面是官方的推荐操作，大家可以参考参考！ Introduction Background Information Case Study: Address Resolution Protocol (ARP) Interrupts Step 1: Identify the Process that Consumes CPU Cycles Step 2: Determine the CPU Queue that Causes the High. Runtime(us) CPU time that the process has used (in microseconds). 241. Image 13 shows the updated I/O graph for an interface that experienced output drops. 07. Core 1: CPU utilization for five seconds: 99%; one. 6, haven't seen any related bugs for this version. 4. txt" action 0. 35 Command Summary - High CPU Troubleshooting Steps Check CPU usage on IOS threads Commands show process cpu detailed process iosd [sorted] Check CPU usage on platform dependent and Nova threads Check traffic on the RX and TX CPU queues show process cpu detailed process {fed platform_mgr stack-mgr ha_mgr. 71 69. action 3. 6. #show process cpu detail process fed sorted Core 0: CPU utilization for five seconds: 67%; one minute: 61%; five minutes: 63% Core 1: CPU utilization for five. Community. 2. In some network deployments, a busy CPU is normal. Problem. Masks/Values Masks/values. 26 0 stack-mgr 13631 3774917 28728769 167 2. 96 29. 5E - read user manual online or download in PDF format. IStep 2: Determine the CPU Queue that Causes the High CPU Usage Condition. 6. Dears, I'm facing problem in the CPU Utilization on Cisco 3750x, the below is the resault of "show process cpu sorted": 5Sec 1Min 5Min TTY Process. I was looking at a show proc CPU history on a 3850 (IOS-XE) switch and I see short CPU spikes. 4799: Memory allocation of 3380 bytes failed from 0xAAB9E1E5A0, alignment 8. Étape 2 : Déterminez la file d'attente du processeur qui entraîne la condition d'utilisation élevée du processeur. Unless otherwise noted, the terms switch and device refer to a standalone switch and to a switch stack. 4) Prior to CSCuu14019, interfaces won't display "output drop" counters. 2. The nagios reports the following message: "cisco_load | CPU: 99 99 99 : 99 > 98". 79% Replenish OOB = 16. Étape 4 : Utiliser le suivi FED. If the IP input process uses unusually high CPU resources, the router is process-switching a lot of IP traffic. Beginner. Es importante monitorear estas colas para descubrir qué paquetes se envían a la CPU y cuáles son procesados por Cisco IOSd®. Cisco Catalyst 3850 Series Switches are the next generation of enterprise class stackable access layer switches, with the new and improved 480-Gbps StackWise-480 and Cisco StackPower. ' As the script collects data, it increases CPU utilization. IOS is 16. Core 0: CPU utilization for five seconds: 7%; one minute: 11%; five minutes: 10% 283 I 574800 3225649 0 4. 00 Core 0: CPU utilization for five seconds: 94%; one minute: 92%; five minutes: 90%The output (Cisco IOSd® CPU output) shows that ARP Snoop, IP Host Track Process, and ARP Input are high. 3 cli command "show process cpu sorted | append nvram:. 04 6. This will generate a list of all ports participating in spanning tree and the. 00 CPU utilization for. com Catalyst C3850 and Catalyst C3650 switches might report unexpected high CPU usage despite any changes made to the configuration or network traffic inbound or outbound to the switch. 97% 0 ARP Input. Cisco Catalyst 3850 Series Switches Support Cases:363 Known Affected Releases: (1) 15. 79% Replenish OOB = 16. NCM is reporting lower CPU for our 3850 & 3650 switches. 73 26. process cpu threshold type total rising 20 interval 5 switch 2 . Does anyone here. EN US. 10-11-2017 08:11 AM. Current state of the process. ICMP is also being returned with spikes up to 1000ms. This is commonly seen when the CPU is interrupted due to ARP packets. x or Later Releases Related Information IntroductionStep 1: Identify the Process that Consumes CPU Cycles Step 2: Determine the CPU Queue that Causes the High CPU Usage Condition Step 3: Dump the Packet Sent to the CPU Step 4: Use FED Tracing Sample Embedded Event Manager (EEM) Script for the Cisco Catalyst 3850 Series Switch Cisco IOS-XE 16. Note: Standard VLAN-ID used by AVB is VLAN 2. 6. 2 cli command "enable" action 0. This traffic ends up on queue 23 . Book Title. We've encountered high CPU utilization issue on our 2x3650 stack. Like. Number of times that the process has been invoked. Now CPU processing of the stack is very high and it causes the packet loss. 1. 242 808819595 3949538 204800 65. 9. 9300-Switch#show platform hardware fed switch active qos. 34 23. 79 9. primarily due to interrupts, on the new Cisco IOS®-XE platform. C3850#sho processes cpu detailed process fed sorted | ex 0. 1. 5. Cisco Catalyst 3850. Hello Is it better to buy Catalyst 9300 with 8 10G port network module or Cat 3850 12 port fiber switch ( stack) We are looking for upstream switch with L3 and SDA capabilities. 80. Unless otherwise noted, the terms switch and device refer to a standalone switch and to a switch stack. Cisco shows fed (PunjectRx and Xcvr) process is mostly consuming the CPU. 0 cli show clock >> bootflash:high-cpu. 3. These regions/banks are called ACL TCAMs (TAQs). I have already found out that the high core usage is only happening on switch 1. 5 cli command "show platform punt statistics port-asic 0 cpuq -1 direction rx | append nvram:. Core 0: CPU utilization for five seconds: 33%; one minute: 21%; five minutes: 20%. 1. The troubleshoot and verification process in this section can be broadly used for high CPU usage due to interrupts. action 3. Upgrading Cisco C3850 Switches to Solves the Problem of High CPU Occupancy According to our customer's feedback, the CPU usage rate of a Cisco. show platform software fed switch active cpu-interface queue retrieved dropped invalid hol-block-----High rate app 994752082 994752082 0 0. Tracing. Delivery of Cisco cryptographic products does not imply third-party authority to import, export, distribute or use encryption. ===== c3850# sh processes cpu switch 2 det process cpumemd sorted Core 0: CPU utilization for five seconds: 12%; one minute: 7%; five minutes: 6%Einleitung. 69 34817 iosd There are several bugs involving high CPUs and "stack-mgr" and "iosd" processes and CSCuo14511 is one of them. For temparary remdiation, if you have maintenance window, reboot teh device and test. Model Number : WS-C3850-48P. Core 2: CPU utilization for five seconds: 100%; one minute: 99%; five minutes: 99% Core 3: CPU utilization for five seconds: 100%; one minute: 99%; five minutes: 100% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 5635 4023094 34582089 2885 74. 3 to see if it helps but any suggestions would be helpful. - The CPU load has been increased in big steps of about 20% in about two months. SSH process spike occurs majorly if large amount of data being sent on the ssh session. CSCup49704. On Catalyst 3850/3650 switches, input PACL and output PACL Access Control Entities (ACEs) are installed in two separate regions/banks. Just swapped a failing 2960X with a 3850 and have high CPU (fed main event and linux_iosd-image . 95 MB) PDF - This Chapter (1. The CPU on the Cisco StackWise Virtual active switch performs all. 3. Stack Manager and High Availability Configuration Guide, Cisco IOS XE Gibraltar 16. WS-C3850-12XS-S. Good candidates. 0 Core 0: CPU utilization for five seconds: 80%; one minute: 80%; five minutes: 83% Core 1: CPU utilization for five seconds: 16%; one minute: 18%; five minutes: 25% Core 2: CPU utilization for five seconds: 9%; one minute: 19%; five minutes: 23% Core 3: CPU utilization for five seconds: 95%. 18694 17000. Please let me for what purpose this process is used and is there. 6% of my total CPU power, I suppose that the. Introduction. System returned to ROM by Critical process fed fault on fp_0_0 (rc=139) System image file is "flash:packages. 1: How can we detect high CPU since we cant read it with snmp 2: Why does cisco not sending the cpu value in snmp ? (disable ipv6 as mentioned isnt working, disable dhcp snooping is)Please inform me on how to prevent high cpu ulization on a cisco device. 7. EEM-Beispielskript (Embedded Event Manager) für Cisco Catalyst Switches der Serie 3850. I have a couple of 3850/3650 that are dropping traffic punted to the CPU. 99 MB) PDF - This Chapter (1. spencer. If you're having constant high cpu on 3. Usage Guidelines. E. 04E that is reporting high CPU caused by " EPC WS Pkt Send p" I have been trying to figure out what could be causing the Embedded Packet Capture to cause high CPU but am not having any luck. Step 1: Identify the Process that Consumes CPU Cycles Step 2: Determine the CPU Queue that Causes the High CPU Usage Condition Step 3: Dump the Packet Sent to the CPU Step 4: Use FED Tracing Sample Embedded Event Manager (EEM) Script for the Cisco Catalyst 3850 Series Switch Cisco IOS-XE 16. 0. Decoding and displaying packets may be CPU intensive; Because packet forwarding typically occurs in hardware, packets are not copied to the CPU for software processing. 3. 03-10-2009 09:24 PM. The new boot loader can support booting both Cisco IOS XE 3. Core 1: CPU utilization for five seconds: 18%; one minute: 24%; five minutes: 28%We have one Catalyat 3850 switch with High CPU utilization. How do I see CPU usage on a Cisco switch? Use the show process cpu command to display CPU and core processor usage. Type of process; can be either IOS or POSIX. txt" action 0. X or 3. SE , that present problems of increased CPU (until 80%) for no apparent reason. _MX# sh processes cpu detailed process fed sorted Core 0: CPU utilization for five seconds: 6%; one minute: 5%; five minutes: 5%. Book Title. O comando show process cpu exibe naturalmente a aparência atual da CPU. High CPU的问题一般分进程高和中断高两种。中断高常由于实时的流量造成，要根据网络的实际情况具体分析，原因有很多种。进程高，不同的进程也有不同的root cause。 在比较常见的几种占用CPU资源进程中，有一种叫 IP Input。 07-17-2019 12:32 AM. . 30% 79. 7. Core 0: CPU utilization for five seconds: 98%; one minute: 74%; five minutes: 79% Core 1: CPU utilization for five seconds: 2%; one minute: 12%; five minutes: 8% then i realized it's about fed and issued the below command . If you reboot the switch before. In our SDA network I've noticed that the External Border Routers (EBN) and Fusion Routers (FR) are reporting high IOSXE-RP Punt Se. txt" We had the same issue on many stacks and ended up upgrading the IOS to at least Version 03. This is log from 3850: <188>377: Dec 14 13:16:09. Have you tried: show processes >>> This will list all of the running processes and will help you locate the PID of the process that you want to kill. Available Languages. Figure 23. show processes cpu sort | exclude 0. Switch_1# sh processes cpu platform sorted location switch 1 R0 | in fman. PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 6032 889844 24282930 618 25. x-Versionen (auch Polaris genannt) ausgeführt werden, Abhilfe schaffen. 检查是否存在可能的安全问题。. 47% 16. 20, RELEASE SOFTWARE (P) 3850_SW uptime is 14 weeks, 23 hours, 27 minutes. Default queue traffic mapping. Average CPU is not really high, between 40% and 50%. 8. 99 MB). EEM-Beispielskript (Embedded Event Manager) für Cisco Catalyst Switches der Serie 3850. Problem analysis process. x or Later Releases Related Information IntroductionStep 1: Identify the Process that Consumes CPU Cycles Step 2: Determine the CPU Queue that Causes the High CPU Usage Condition Step 3: Dump the Packet Sent to the CPU Step 4: Use FED Tracing Sample Embedded Event Manager (EEM) Script for the Cisco Catalyst 3850 Series Switch Cisco IOS-XE 16. 3. 0". The busiest process seems to be 'fed' k390-cal-r-4a-0#show proc cpu sorted Core 0: CPU utilization for five seconds: 59%; one minute: 53%;. we had an alert through for a sustained period of high cpu usage, upon investigation we observed the following. Schritt 4: Verwenden der FED-Ablaufverfolgung. adams 2. 01-13-2014 08:25 AM - edited 03-07-2019 05:32 PM. 2(53)SE. I noticed a lot of these devices are Apple iOS Devices that are. #sh processes cpu detailed process fed sorted 1min | e 0. X train, like 16. PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 5717 251676 36349739 1470 27. This command initiates a graceful switchover from the active to the standby switch. According to our customer's feedback, the CPU usage rate of a Cisco aggregation switch has increased recently. This will be the second beta rebuild on 16. 0E IOS, and they are experiencing high CPU peak. Core 3: CPU utilization for five seconds: 97%; one minute: 94%; five minutes: 94%. 2SE is reporting what seems like excessively high rates of CPU utilitization. Our 3850 stack is experiencing spikes on the CPU due to the eicored process. mil1. The reboot in all cases took 12 mins for a 2 switch stack to 13 1/2 mins for a 9 switch stack. Stack Manager and High Availability. action 3. Using the command 'show processes cpu' does not show that the CPU is being taxed. SE. 2. 12. Dieses Tool ist beispielsweise hilfreich, um Datenverkehr zu identifizieren, der die. 1. What is that PunjectRx process that's responsible for the higher than normal value do? Core 0: CPU utilization for five seconds: 20%; one minute: 27%; five minutes: 30%. I have found that the delay is so high when I telnet 10. Available Languages. 03% Hulc LED Process. 0 Core 0: CPU utilization for five seconds: 34%; one minute: 35%; five minutes: 41% Core 1: CPU utilization for five seconds:Core 2: CPU utilization for five seconds: 100%; one minute: 99%; five minutes: 99% Core 3: CPU utilization for five seconds: 100%; one minute: 99%; five minutes: 100% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 5635 4023094 34582089 2885 74. x (Catalyst 3850 Switches) Configuring Optional Spanning-Tree Features Monitoring the Spanning-Tree Status. Here is the part of the "show process cpu sorted". 93% 17. When a process is finished with a buffer, the process must free the buffer. 4. The following is a log entry example for. 3 at Power. Switch #1 PunjectRX = 15. Below is detailed output from fed and iosd as an example. 3850 是现在常用的思科交换机，有时候遇到CPU 使用巨高的情况，严重影响网络使用，那么如何排错呢？下面是官方的推荐操作，大家可以参考参考！ Introduction Background Information Case Study: Address Resolution Protocol (ARP) Interrupts Step 1: Identify the Process that Consumes CPU Cycles Step 2: Determine the CPU Queue that. A vulnerability in the IP Version 4 (IPv4) processing code of Cisco IOS XE Software running on Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS). 1. 01-09-2020 07:33 AM. 02. El switch Catalyst de Cisco serie 3850 tiene varias colas que atienden a diferentes tipos de paquetes (la FED mantiene 32 colas de CPU RX, que son colas que van directamente a la CPU). 6. The body of the email is the output of the show process cpu sorted command. There are two probable causes for high CPU utilization occuring in relation to Simple Network Management Protocol (SNMP): Large route and/or ARP tables being polled by the NMS station. If there is SFP port in use, it might be a little bit high. PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 6032 889844 24282930 618 25. Switch # redundancy force-switchover System configuration has been modified. Traffic that exceeds the default 600 packet per second rate in the CoPP policy is dropped before it reaches the CPU. 80. Troubleshoot 3650/3850 Stack Manager Reloads 28/Feb/2023;. 如果最近没有对网络进行任何更改，则安全问题尤其. 06E RELEASE SOFTWARE (fc1)) when we checked the software we noticed that software version effected with vstack vulnerability and we want to upgrade to latest stable version afterI have checked the. Type of process; can be either IOS or POSIX. Note: It is necessary to define 'exit-val. Switch firmware is 16. 0 Core 0: CPU utilization for five seconds: 45%; one minute: 44%; five minutes: 44%. 7. It will remain updated. Use the show ipx interface command if IPX fast-switching is disabled. 08-19-2021 02:11 PM. 5, however the cpu will reach to 100% occasionally I have configured the event already, event manager applet highcpu event syslog pattern ". Ingress protocol control packet which intercepted by DP sent to the CP to process it. The "Hulc LED" process does following tasks: - Check Link status on every port. Thanks, Tom . RegardsThe CPU is so high but there is any process consuming the CPU as you can see bellow. Checked from the monitoring software, the CPU usage is high. An E-series Catalyst 4500 switch configured with RSPAN might display high CPU utilization during the host learning process. Download and copy the IOS version file to a USB flash drive, and connect it to the USB port of the C3850 switch. 72 1. 第2步：確定導致CPU使用率過高的CPU隊列. 9. 0 Helpful. I performed the platform packet capture and it's indeed a lot of ARP Requests being spammed. Sw Ver. GM-TI14RO131#sh proc cpu det process iosd | ex 0. Chinese; EN US; French; Japanese;. 6. 04 6. Go to Cisco r/Cisco. Core 0: CPU utilization for five seconds: 45%; one minute: 44%; five minutes: 44%. 发出 show processes cpu 命令可显示有关这些进程的详细 CPU 使用率统计信息，发出 show processes memory 命令可显示使用的内存量。. clear socket PID. Sw Ver. 2(55)SE8, RELEASE SOFTWARE (fc2)283 I 574800 3225649 0 4. X的Catalyst交换机上配置Punt/Inject FED数据包捕获 ; 技术支持和文档 - Cisco Systems wrote: PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 5881 3303778 46124849 472 49. 89 0 iosd-FED process crash -flash write issue -Traffic destined to the CPU is dropped following a reload and a shut/no shut of SVI fixes it until the next reload. High CPU observed in punjectrx fed-ots-main thread. 07-17-2019 12:32 AM. 3850-48-01#show processes memory. Please advise. I have been working with TAC for almost a year on this issue. Address Resolution Protocol Interrupts Step 1. 03. High CPU 0 - Cisco Catalyst 3850 Posted by Paul-CoA on Dec 13th, 2016 at 8:53 AM Cisco We have noticed with firmware version 3. 6. The show processes cpu history command displays in ASCII graphical form the total CPU usage on the router over a period of time: one minute, one hour, and 72 hours, displayed in increments of one second, one minute, and one hour, respectively. NOTE: Stack in Bundle Mode. Traffic across the switch is stable at this time but we are concerned about this issue. 39 5. 06. 41 49. 9. 0 Core 0: CPU utilization for five seconds: 9%; one minute: 39%; five minutes: 44% Core 1: CPU utilization for five seconds: 8%; one minute: 25%; five minutes: 28%. Please help to resolve the issue. Since two weeks the core switch has an utilization of 100% (every ten minutes). 4 and below is a copy of the command "show process cpu | ex 0. I found the following documention mention how. The Cisco Catalyst 3850 Series Switch has a number of queues that cater to di erent types of. 01 49. Please see the output from sho platform software fed switch active cpu-interface. 0(1)EZThrough our monitoring system we saw an peak in the CPU usage on one of our C3850 switch stacks. I saw that there were similar issues with Cisco ASR devices and a customer poller was created. 11 0 DAI Packet Process 3850-2#show processes cpu detailed process fed sorted | ex 0. Cisco bug ID CSCup49704€- 3850 FED Crash - Waits for SPI channelsCisco Employee オプション. 66 2. MD-3850-14#sh processes cpu detailed process fed sorted | ex 0. Traffic across the switch is stable at this time but we are concerned about this issue. CSCuq48800. Look at the spanning tree instance details ('sh span det' or something to that effect). Chinese; EN US; French; Japanese; Korean; Portuguese; SpanishBeginner. This requires the switch to receive the DHCP Discover and punt this packet up to its CPU to process. Current OS version: Gibraltar - 16. I am facing high CPU utilization with 3850 switch. 49% 77. 54 0 stack-mgr For temparary remdiation, if you have maintenance window, reboot teh device and test. 4 software release is posted on CCO for General Availability (GA). contact Cisco TAC and open a ticket so they can look into the issue. . 02 1088 fed 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. 50 69. Catalyst 3650/3850 series switches with Cisco IOS XE 16. 8 fed本帖最后由 xupeng 于 2015-4-10 09:12 编辑 案例分享:ARP导致3850交换机CPU中断高 第一步: 找到CPU占用率高的进程 3850系列交换机使用4核CPU, 使用show process cpu 命令将会看到: 3850-2#show processes cpu sort | exclude 0. 要验证设备的CPU或内存使用率级别是否指示可能存在问题，请使用输出解释程序工具。. I'm having issues with switches in my network , high cpu bounces from code to core , Switch-xxx#sh processes cpu | ex 0. Mostly, if you set up the SNMP correctly the IOS will "SLOWLY" release the CPU/Memory. Passaggio 3: Scaricare il pacchetto inviato alla CPU. See the attached. This will be the second beta rebuild on 16.