Introduction. I notice that the FED on one of my cisco 3850's is putting this traffic to the CP. 3. Cisco IOS-XE 16 — 概览; 排除 Catalyst 3850 系列交换机高 CPU 使用率问题; Cisco IOS®和IOS®-XE的嵌入式 数 据包捕获配置示例; 在运行IOS-XE 16. When cpu was running high, we noticed. 33%. ' As the script collects data, it increases CPU utilization. It will remain updated. 03. Cisco IOS XE 3. process cpu threshold type total rising 80 interval 5! event manager applet High_CPU authorization bypass event syslog occurs 1 pattern "CPURISINGTHRESHOLD" action 1. See the attached. 78 25. action 3. 3. Enterprise Switching Business Unit is happy to announce availability of Beta release of 16. The Cisco® 40GBASE QSFP (Quad Small Form-Factor Pluggable) portfolio offers customers a wide variety of high-density and low-power 40 Gigabit Ethernet connectivity options for data center, high-performance computing 00networks, enterprise core and distribution layers, and service provider applications. 03 cli command "no monitor capture tac_cpu" 관련 정보. x 20/Aug/2020. 2 process that seems to be the culprit. 1. このドキュメントでは、16. 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。. 04SE. Solved: Hello, I need help on understanding the problem we are facing with one of our 3850 stack. 28 MB) View with Adobe Reader on a variety of devicesOptions. Chinese; EN US; French; Japanese; Korean; Portuguese; Log InStack Manager and High Availability Configuration Guide, Cisco IOS XE Fuji 16. Please advise. 01-09-2020 07:33 AM. Apr 04, 2014 Contents 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 CPU Usage Condition Step 3. 0 Core 0: CPU utilization for five seconds: 74%; one minute: 76%; five minutes: 75% Core 1: CPU utilization for five seconds: 100%; one minute: 71%; five minutes: 73% Core 2: CPU utiliza. 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%;. 49 does not. 2. Core 2: CPU utilization for five seconds: 92%; one minute: 82%; five minutes: 81% Core 3: CPU utilization for five seconds: 99%; one minute: 98%; five minutes: 93% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 5848 1697219 13106202 1620 49. ステップ1:CPUサイクルを消費しているプロセスを特定する. 109. x software on the Cisco Catalyst 3850 Series Switches. 47% 16. SE. 07-17-2019 12:32 AM. 6. Solved: Hi All, We experience high CPU usage on Stack 3850 switches and currently running WS-C3850-48P 03. I noticed a lot of these devices are Apple iOS Devices that are. Page of 54 Go 39. Does anyone know how to fix high CPU utilization caused by SSH on 6509-e? SW-CORE-6509#sh processes cpu sorted | e 0. I notice that the FED on one of my cisco 3850's is putting this traffic to the CP. Any recommendation for new stable IOS please. A buffer leak occurs when the code forgets to process a buffer or. In the results of the show pds tag all command, notice a handle, 7296672, is reported next to the Punt Rx Proto Snoop. Runtime(us) CPU time that the process has used (in microseconds). Release Notes for Cisco Catalyst 3850 Series Switches, Cisco IOS XE Denali 16. The Cisco Catalyst 3850 Series Switches support dual redundant power supplies. vManage shows real-time CPU utilization for a device. 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). We pulled the same config from the 2960X and now the 3850 is hitting 90%+ CPU. Below is detailed output from fed and iosd as an example. 5b without a noticeable change in CPU levels. The Cisco Catalyst 3850 Series Switch has a number of queues that cater to di erent types of. Currently have a hardware issue with some PCs on our network flooding traffic, this is resulting in high cpu usage on our 3850 switches. It is controlling two ASAs with not much traffic passing through them. 07-15-2013 10:39 PM. Eg. Investigate Why FED is Punting Packets to the. 01 49. Cisco StackWise Virtual is supported only on the following Cisco Catalyst 3850 Series Switch models. Use show process cpu , to determine which process causes this issue. 7. Model Number : WS-C3850-48P. Below is the logs from the switch: HOSTNAME#sh ver Cisco IOS Software, IOS-XE Software, Catal. [6] The switch ships with one power supply by default, and the second power supply can be purchased at the time of ordering the switch or at a later time. High end routers (7000, 7500 series) have their buffers in main dynamic random-access memory (DRAM),. 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%. 4800: Pool: Processor Free: 1598872 Cause: Memory fragmentation. 3 at Power. Core 3: CPU utilization for five seconds: 97%; one minute: 94%; five minutes: 94%. 11 0. I canget a # enable prompt but after 15-20seconds this is what occurs: Mar 31 17:58:42. 71 29. The high CPU utilization is caused by constantly recalculating paths. 99 MB) PDF - This Chapter (1. There were heaps of logs like below: 4801: Alternate Pool: None Free: 0 Cause: No Alternate pool. 1. According to our customer's feedback, the CPU usage rate of a Cisco aggregation switch has increased recently. If there is SFP port in use, it might be a little bit high. Stack Manager and High Availability. Switch # redundancy force-switchover System configuration has been modified. 32768, f04a. txt" action 0. x (Catalyst 3850 Switches). We have a switch stack with 2 x WS-C3850-48T that is hitting high CPU usage. 4 and below is a copy of the command "show process cpu | ex 0. Hello all, we are facing issue of HIGH CPU usage on 3850 switch. Options. 01. Sw Ver. 3. 33 4. 手順2：高いCPU使用率を引き起こすCPUキューを判別する. We have (11) 3850's; 2 are stacked and 9 standalone. Core 0: CPU utilization for five seconds: 12%; one minute: 13%; five minutes: 17%. BRM_HQ_CSW_01#sh proc cpu sort. 6. Note - For information about unsupported features, see Important Notes. and are only doing packet forwarding you could consider changing to a layer 3 switch, like a Cisco 3850. However, due to the differences in architecture and forwarding mechanisms between. PDF - Complete Book (9. 663: %PMAN-3-PROCHOLDDOWN: F0/0: pman: The process fed has been helddown (rc 139) Chassis 1 reloading, reason - Reload command. 6. さらに、このドキュメントでは. NCM is reporting lower CPU for our 3850 & 3650 switches. I upgraded the firmware from 16. C3650#show processes cpu detailed process fed sorted | ex 0. Cisco IOS Software refers to the single bundled Cisco IOS image for both the Supervisor Engine and Multilayer Switch Feature Card (MSFC) module. 5b without a noticeable change in CPU levels. txt action 4. 4 cli command "show process cpu detailed process sorted | nvram:. IOS is 16. 1 etc then you won’t see any OID for each core , this means at present Cisco has not included or implemented the OIDs for each core under CISCO-PROCESS-MIB. 5 cli command "show platform punt statistics port-asic 0 cpuq -1 direction rx | append nvram:. 一旦您发现 CPU 使用率高的症状中列出的任何症状，请执行以下操作：. 10-11-2017 08:11 AM. On Catalyst 3850/3650 switches, input PACL and output PACL Access Control Entities (ACEs) are installed in two separate regions/banks. 5. However, this is not my case. 0 Core 0: CPU utilization for five seconds: 22%; one minute: 21%; five minutes: 23% Core 1: CPU utilization for five seconds: 9%; one minute: 11%; five minutes: 16% Core 2: CPU utilization for five. 1. Hi Guys, i have one cisco switch WS-C3850-48XS-S with image 16. sh processes memory platform sorted location switch 1 rp0 (Page 1 only) The switch/stack is running on 16. 0 Core 0: CPU utilization for five seconds: 16%; one minute: 17%; five minutes: 17% Core 1: CPU utilization for five seconds: 96%; one minute: 97%; five minutes: 97% Core 2: CPU utilization for five seconds: 100%; one minute: 99%; five minutes: 74% As you'll notice, the high cpu value on the core doesn't always show up on the same core. 00 Core 0: CPU utilization for five seconds: 80%; one minute: 79%; five minutes: 79% Core 1: CPU utilization for five. 3SE, support was added for the Cisco Catalyst 3650 Series Switches and Cisco Catalyst 3850 Series Switches. RSS フィードを購読する. Rising star. Download Download Options. The issue is that the CPU seems to only get to 99% when you get months into the reboot/reload, so it's hard to troubleshoot then and there. 06. 99 MB). Troubleshoot High CPU Usage in Catalyst Switch Platforms Running Cisco IOS-XE 16. Passaggio 4: Utilizzare la traccia FED. Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed;. I am monitoring this device's CPU with Prime Infrastructure 3. For detailed information to help troubleshoot your high CPU usage concerns, see the Catalyst 3850 Series Switch High CPU Usage Troubleshooting document. E. We have been able to investigate which port is driving the high cpu. This is commonly seen when the CPU is interrupted due to ARP packets. 12. show process cpu の出力に関しては、出力されているProcessだけがCPUを使用しているわけではない為に差分が発生するということで、理解いたしました。 以上、よろしくお願いいたします。I'm working on Cisco-Network(with Coreswitch Cisco 3750E). By default, priority and control traffic are separated into Q0 however Q0 is not set as priority queue. Beginner. 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. 0 Core 0: CPU utilization for five seconds: 45%; one minute: 44%; five minutes: 44% Core 1: CPU utilization for five seconds: 38%; one minute: 44%; five minutes: 45%We have 4 Cisco 3860 (stack) configured as a collapsed core switch (it is Core and Distribution switch). *" action 4 cli command "monitor capture tac_cpu control-plane in match any file location f. When the CPU is over 80% busy, the script takes these actions: creates a timestamp from the output of show clock, and uses this to create a unique filename; outputs about process and software state are then written. 6. 35 49. Core 2: CPU utilization for five seconds: 57%; one minute: 65%; five minutes: 67% Core 3: CPU utilization for five seconds: 53%; one minute: 61%; five minutes: 62% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 5714 985059 97694899 424 45. Microseconds of CPU time for each. 6 28. When a process is finished with a buffer, the process must free the buffer. 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%. 66 2. 72 1. 0. Notice that you must enable debug pds pktbuf-last before you use the command. 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. fed and stack-mgr causing High CPU on 3850 CSCuo14511 Description Symptom: "show process cpu" reports high CPU utilization due to 'stack-mgr' process (which consumes >75%). I have been trying to figure out 3850 / 3650 CPU queue traffic with not much success. High CPU Utilization may be seen on some Cisco Catalyst platforms due to IPv6 Multicast traffic with MAC address in the range 3333. 33 26. CPU usage can be monitored on a per. I have already found out that the high core usage is only happening on switch 1. I analysis "show proc cpu" result, the root cause of high CPU utilization is "FED" process. 97 1088 fed 9926 3902102 37182712 364 8. . CİSCO 3650 - 3850 HIGH CPU (FED & IOSD). 4. 6. CSCsi78581 Hulc LED Process uses 10-15% CPU on Catalyst 3750/3560. 07-17-2019 12:32 AM. 3850-48-01#show processes memory platform sorted. I have researched and cannot figure out what this process is for. Subscribe to RSS Feed; Mark Topic as New;. Since you have tried all the option we have now the last resort is Open a TAC case with bug id, so they can able to suggest to best. Cisco Catalyst 3850 系列交换机有许多队列，可满足不同类型数据包的需求（FED 维护 32 个直接进入 CPU 的接收队列）。 监控这些队列非常重要，以便发现哪些数据包被传送到CPU，哪些数据包由Cisco IOSd®处理。In 3850, I created 6 SVI to routing on local and I apply ACL for 5 SVI as bellow: When I apply ACL 108 have 159 rule to SVI 108, CPU switch is high 80% but before I apply ACL 108, CPU is 4%. Please see bug details. 3 or Earlier Address Resolution Protocol Interrupts. Core 0: CPU utilization for five seconds: 1%; one minute: 4%; five minutes: 23%. here is the output: DC1#show process cpu | ex 0. Mark as New; Bookmark; Subscribe;. As per RFC7042, all MAC-48 multicast identifiers prefixed "33-33" (that is, the 2**32 multicast MAC identifiers in the range from 33-33-00-00-00-00 to 33-33-FF-FF-FF-FF) are used as. These switches seem to be working fine with no CPU issues so far but as I said before they all have bugs. A different VLAN-ID can be set in the switch for the AVB VLAN using cli avb vlan <vlan-id>. 03 cli command "no monitor capture tac_cpu" 相关信息. 0 Core 0: CPU utilization for five seconds: 53%;. 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. 06. 2 52 WS-C3650-48PD 16. 0 Core 0: CPU utilization for five seconds: 45%; one minute: 44%; five minutes: 44% Core 1: CPU utilization for five seconds: 38%; one minute: 44%; five minutes: 45% 283 I 574800 3225649 0 4. 06E (Version 03. xxxx. • IOSd runs as process on kernel-> linux_iosd-image • Not all processes run on all switches. 69 34817 iosd There are several bugs involving high CPUs and "stack-mgr" and "iosd" processes and CSCuo14511 is one of them. Stack Manager and High Availability Configuration Guide, Cisco IOS XE Gibraltar 16. We received this alert from monitoring tool > CPU (Switch 2) has exceeded threshold: 90% currently 99% Upon checking on switch, show process cpu / sho process cpu history command returns normal values: sw-1#sho processes cpuHigh CPU Utilization ladopetrucci. Few of our branch office switches are running with high memory utilization, we are receiving alerts on our monitoring tool for the same. 0 Core 0: CPU utilization for five seconds: 45%; one minute: 44%; five minutes: 44% Core 1: CPU utilization for five seconds: 38%; one minute: 44%; five minutes: 45% The problem here I think is something that can't be expressed int this document because I'm seeing this high cpu issue happen on multiple 3850s with multiple images and to multiple queues. Cisco Catalyst 3850 Series Switches Support Cases:363 Known Affected Releases: (1) 15. HI everybody. 0E IOS, and they are experiencing high CPU peak. I am facing high CPU utilization with 3850 switch. 0 #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 seconds: 90%; one minute: 63%; five minutes: 68% Core 2: CPU utilization for five seconds: 44%; one minute: 77%; five minutes: 74% Core 3: CPU utilization for five seconds: 99%; one. 4802: -Process= "IOSD ipc task", ipl= 0, pid= 74. Cisco bug ID CSCup49704 - 3850 FED Crash. 0". 0. Symptom 1) Any signs of a stack cable issue is apparent by any flapping of the stack port prior to the reset. Cisco Employee. Check these issues: Interrupt switching is disabled on an interface (or interfaces) that has (have) a lot of traffic. 2. 5E - read user manual online or download in PDF format. Switch_1# sh processes cpu platform sorted location switch 3 R0 | in fmanHello, After the IOS upgrade to the version 16. I have two switches in stack, which have high CPU processing, I see that the fed process is consuming too many CPU resources. x-Versionen (auch Polaris genannt) ausgeführt werden, Abhilfe schaffen. The show process cpu command is used in order to display the current process state inside of the IOSd daemon. 1. 03. 0 cli show processes cpu sort >> bootflash:high-cpu. 74 1088 fed. 00 Core 0: CPU utilization. Good candidates. 0 cli show processes cpu sort >> bootflash:high-cpu. show proc cpu | exclude 0. But at the same time other switches' delay is normal except 10. Switch_1# sh processes cpu platform sorted location switch 1 R0 | in fman. _MX# sh processes cpu detailed process fed sorted Core 0: CPU utilization for five seconds: 6%; one minute: 5%; five minutes: 5%. Initiating Graceful Switchover. 32% 0. 83 1088 fed 5637 968593 64678942 1101 24. Here is the part of the "show process cpu sorted". 0 cli command "show processes cpu detailed process fed sort | append flash:HG-CPUlog. CatOS-Issue the show proc cpu command to display CPU utilization information. 6. x (Catalyst 3850 Switches). 22 0. . 00 4. EN US. Cisco Catalyst 9200 Series Switches are entry level enterprise-class access switches that extend the power of intent-based networking and Cisco Catalyst 9000 Series Switches hardware and software innovation to a broader scale of deployments. 30% 79. Dieses Tool ist beispielsweise hilfreich, um Datenverkehr zu identifizieren, der die. CSCuq48800. 9. 1. 4800: Pool: Processor Free: 1598872 Cause: Memory fragmentation. X or 3. Dumps all the packets sent to the different CPU queues and possible drops. Traffic across the switch is stable at this time but we are concerned about this issue. #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. 16. 96 29. 02. 6. 3850 FED Crash - Waiting for SPI channels FED_SPI_FLCD,FED_SPI_FAST. Step 2 Use the show process cpu command to display CPU and core processor usage. Wondering why the IOSXE-RP Punt Se process is fairly high on our SDA border nodes. 26 0 stack-mgr 13631 3774917 28728769 167 2. E to 16. 6. The Cisco Catalyst 3850 Series Switch has a number of queues that cater to different types of packets (the FED maintains 32 RX CPU queues, which are queues that go directly to the CPU). Switch_1# sh processes cpu platform sorted location switch 3 R0 | in fman Hello, After the IOS upgrade to the version 16. High CPU due “Hulc LED” process is an expected behavior. Our initial set up when the issue suddenly occured: DHCP Server (Core Switch) ---> IP phone (vlan812) ---> PC (vlan808) All IP phones are ok. The "Hulc LED" process does following tasks: - Check Link status on every port. x software on the Cisco Catalyst 3850 Series Switches. - Check the status of the transceiver. NCM is reporting lower CPU for our 3850 & 3650 switches. We are running software version: cat3k_caa-universalk9, version 03. 79 9. x. For example, on a 3650 I have traffic punted to the CPU from FED for SW forwarding queue and notice a lot of dropped packets. . 11 0 DAI Packet Process 3850-2#show processes cpu detailed process fed sorted | ex 0. Suggesting to upgrade to 03. Current state of the process. CPU Q Id : 23 CPU Q Name : CPU_Q. 2. If the IP input process uses unusually high CPU resources, the router is process-switching a lot of IP traffic. I upgraded the firmware from 16. Cisco Moderador. 1 however the rest of the 3850 seems to be OK except this naught one. Release Notes for Cisco Catalyst 3850 Series Switches, Cisco IOS XE Denali 16. This is commonly seen when the CPU is interrupted due to ARP packets. Apr 04, 2014 Contents Introduction Background Information Case Study: Address Resolution Protocol (ARP) Interrupts Step 1: Identify the Process that Consumes CPU Cycles Step 2: Determine. 95 MB) PDF - This Chapter (1. Options. This script monitors a SNMP OID used to read the CPU busy percentage in the last 5 seconds. When you get the new switch, make sure to monitor the CPU and memory for a few weeks to make they are working as. 02. Dec 13th, 2016 at 9:06 AM. We are running OSPF and L2 MST. We have one Catalyat 3850 switch with High CPU utilization. 34 23. With the 17. 0 Core 0: CPU utilization for five seconds: 49%; one minute: 76%; five minutes: 75%. Command Reference, Cisco IOS XE Fuji 16. Type of process; can be either IOS or POSIX. 9 show processes cpu platform sorted CPU utilization for five seconds: 64%, one minute: 62%, five minutes: 63%. As long as it is not affecting your production environment, you should be fine. Stack Manager and High Availability. Cisco bug ID CSCup49704€- 3850 FED Crash - Waits for SPI channelsCisco Employee オプション. 0 CORE-SW01#show proc cpu detailed process fed | ex 0. Following the Cisco white paper, it looks to be stemming from ARP Requests. txt" action 6. 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. 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. Unless otherwise noted, the terms switch and device refer to a standalone switch and to a switch stack. 2. I found the following documention mention how. Here is some output: SW58#sh mod. mil1. Cisco 3850 High CPU due to fed Go to solution. Hulc LED Process is a process responsible for link status detection. Step 2: Determine the CPU Queue that Causes the High CPU Usage Condition The Cisco Catalyst 3850 Series Switch has a number of queues that cater to different. Has anyone seen this and solved it without an upgrade. Diagnose a Potential Stack Cable or Port Issue. • IOSd runs as process on kernel-> linux_iosd-image • Not all processes run on all switches Switch_1#sh processes cpu platform sorted location switch 1 R0 | in fman 27777 26990 0% 0% 0% S 314179584 fman_rp 19145 17642 0% 0% 0% S 296591360 fman_fp_image Switch_1#sh processes cpu platform sorted location switch 3 R0 | in fmanCisco Catalyst 3850 Stackable 24 10/100/1000 Ethernet ports, with 350-WAC power supply 1 RU, LAN Base feature set (StackPower cables must be purchased separately). To find CPU usage due to the subprocesses and tasks operating under a specific process, use the show process cpu detailed command. CSCup49704. Similar to Cisco routers, switches use the show processes cpu command in order to show CPU utilization to identify the causes of high CPU utilization. The Cisco 3850 reboot after a couple of hours in operations. Cisco IOS-XE 16 - At a Glance; Catalyst 3850 Series Switch High CPU Usage Troubleshoot; Embedded Packet Capture for. Supposedly I should have been a flood of multicast . X then this is due to a well-known bug: CSCuo14511. 4, and 16. 07. xxxx. 66 26. 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). It is installed on VMware with the minimum requirements. 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. 4E or Earlier Might Exhibit High CPU Usage FN - 70110 - Memory Leak Issue on C3850/C3650 Switches That Run Polaris Software Version 16. Following the Cisco white paper, it looks to be stemming from ARP Requests. 2E iosixe version where i can observe high cpu due to below process. I have found others discussion with high CPU process but there is no clear explanation for PunjectRx. 6 we are facing the high CPU usage. fed —The Forwarding Engine Driver process. 4. WS-C3850-24XS-S. Options. adams 2. xreleases). 72% Switch #2 (the ironic thing is that this switch is a hot spare and has nothing plugged into it) stack-mgr = 32. This will be the second beta rebuild on 16. Tracing. Cisco shows fed (PunjectRx and Xcvr) process is mostly consuming the CPU. 39 0 pdsd 8581 3259771 25430981 187 2. x (Catalyst 3850 Switches) Chapter Title. Upgrade the firmware to something more recent. Seeing the same issue on a 3850 stack. process cpu threshold type total rising 20 interval 5 switch 2 . 0(2a)EX5 with the CPU processes to follow:. after a while it recovery to normal. And I knock to command being delay. 監控這些隊列很重要，以便發現哪些資料包被轉發到CPU，哪些資料包由Cisco IOSd®處理。. Conditions: The issue was not reproduced. One or more Cisco IOS process is consuming too much CPU time. This will be the second beta rebuild on 16. This is usually triggered by an event that activated the process. 04 6. Core 1: CPU utilization for five seconds: 18%; one minute: 24%; five minutes: 28%We have one Catalyat 3850 switch with High CPU utilization. 4799: Memory allocation of 3380 bytes failed from 0xAAB9E1E5A0, alignment 8. x (Catalyst 3850 Switches) Configuring Optional Spanning-Tree Features Monitoring the Spanning-Tree Status.