Switch# show processes cpu sorted 5sec CPU utilization for five seconds: 82%/5%; one minute: 40%; five minutes: 34% PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 217 135928429 493897689 275 You can use this count to determine the type of packets being received. The debug privileged EXEC command to enable debugging of a feature. Can you reproduce this problem? http://silkiconfinder.com/high-cpu/show-cpu-usage-cisco-switch.html
Switch# show ip traffic IP statistics: Rcvd: 12420483 total, 840467 local destination 0 format errors, 0 checksum errors, 0 bad hop count 0 unknown protocol, 222764 not a gateway 0 security For instance the CPU is receiving lots of packets from the hardware because there's a broadcast storm on the network. Routing topology change, such as BGP route flapping or OSPF route flapping. Finally, use the companion CD-ROM to evaluate your knowledge of the topics and see if you need a review. http://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/15095-highcpu.html
Documentation of the configuration and operation of software features is generally publicly available, and therefore configuration problems can often be diagnosed without the need for direct assistance from the vendor or If one of the listed system processes is the most active process in the CPU, it is likely that the corresponding type of network packet is flooding the CPU. Last week we upgraded the ios to the new one listed above Now When we execute the command show process cpu history , the average-cpu-utlization is around 20% at all times.
Switch# show platform tcam utilization CAM Utilization for ASIC# 0 Max Used Masks/Values Masks/values Unicast mac addresses: 6364/6364 31/31 IPv4 IGMP groups + multicast routes: 1120/1120 1/1 IPv4 unicast directly-connected You can eliminate these issues from your troubleshooting steps. Unresolved Issues If the troubleshooting steps in this document do not help you to determine the root cause of high CPU utilization, you should contact the Technical Assistance Center (TAC) for Ip Input High Cpu We'll send you an e-mail containing your password.
To allocate more TCAM resources to indirect Layer 3 routes, you must reduce some other TCAM resources. How To Check Bandwidth Utilization On Cisco Router L2 protocol—Used for protocol packets such as UDLD, and so on. Use the interrupt percentage to determine if the problem is caused by a system process or high network traffic. http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/troubleshooting/cpu_util.html When the switch CPU is busy, management tools such as Telnet or SSH are usually not very useful.
If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Fed Process Cisco The command reference gives a detailed explanation of the show version command. You can collect the data manually or automatically, using this UNIX shell script. Determining the Root Cause When you suspect the CPU is too busy, first determine if it is busy because a system process is taking too much CPU time or because it
We'll let you know when a new response is added. http://itknowledgeexchange.techtarget.com/network-technologies/%E2%80%9Cshow-processes-cpu-sorted%E2%80%9D-good-command-to-troubleshoot-a-cisco-router-cpu-utilization/ Google Daydream VR Development T... Show Memory Usage Cisco The switch hardware counts the packets in each CPU receive queue. Cisco Router High Cpu Interrupts For information about OSPF route filtering, see the feature guide at this URL: http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/routmap.html Debugging Active Processes If the CPU utilization percentage is high and the interrupt percentage is low, the
Sort by: OldestNewest Sorting replies... check over here Table 3 lists some processes that consume CPU resources with normal and high percentages, possible root cause for the process, and suggested actions. This is a sample script for capturing the output from theshow version and show processes cpucommands: #!/opt/local/bin/bash ########################################### # Router's IP address # IP_ADDRESS='10.200.40.53' # Directory where the log files will Close to half of the switching packet-per-second power comes after 90 to 95 percent CPU utilization. Hulc Led Process High Cpu
To determine switch CPU utilization, enter the show processes cpu sorted privileged EXEC command. The most commonly used Cisco IOS commands used for this purpose are the show processes CPU, show memory, and show interface commands, as covered in the sections that follow. Before you activate Debug, what are some of its characteristics that you should consider? his comment is here Switches have specialized hardware that handle the switching task, so the main CPU should in general not be involved in this.
All rights reserved. Troubleshoot High Cpu Usage Linux A high CPU utilization and relatively low interrupt percentage indicates that one or more system processes is taking too much time. This memory is also completely reserved throughout bootup, so it is always shows as high since the memory is completely used.
Cisco IOS learns about routes from routing protocols—such as BGP, RIP, OSPF, EIGRP, and IS-IS—and from statically configured routes. When should an author disclaim historical knowledge? Get Access Questions & Answers ? Arp Input High Cpu This can be IP Input because someone is SNMP walking or polling.
On Cisco 7500 routers, Versatile Interface Processors (VIPs) and Route/Switch Processors (RSPs) do not report linear CPU utilization. If yes, periodically collect the output of the show processes cpu command, which shows if the high CPU utilization is caused by interrupts or by a certain process. ARP broadcast storms. http://silkiconfinder.com/high-cpu/vlc-high-cpu-usage-mkv.html If you do not have the authority to change the /etc/crontab file, run the script in a separate process, like this: while [ 1 ]; do ./router-script ; sleep 300; done
Using summary routes reduces the routing table size. It is the second number in the 5 second utilization percentage. Depending on the model and the type being used this can range from 5 to 40% If the switch is stacked then, at a minimum, the CPU will operate normally a Cisco Support Community Directory Network Infrastructure WAN, Routing and Switching LAN, Switching and Routing Network Management Remote Access Optical Networking Getting Started with LANs IPv6 Integration and Transition EEM Scripting Other
Then, periodically collect the output of the commands in this section, except for the show log command, whose messages should be logged on a syslog server. See the chapters on “Configuring Network Security with ACLs,” “Configuring IPv6 ACLs” (if supported on the switch), and “Configuring QoS” in the switch software configuration guide. All other IP packets that had a TCAM miss are punted to the CPU. Figure 4-10 The show processes cpu Command Output Example The example depicted in Figure 4-10 shows that over the past minute 31 percent of the available CPU has been used and
Now, run undebug all from exec, exec sh netdr captured-packets, then sanitize out your passwords, snmp communities, ip addresses, etc... You can see if the CPU has been constantly busy or if utilization has been spiking. These packet counts do not include the IP packets switched or routed in hardware. Enter the show sdm prefer privileged EXEC command to see the active SDM template on a switch: Switch# show sdm prefer The current template is "desktop default" template.
Are you able to issue show commands on the router? This message is used to identify objects that use more CPU time than expected (but still not CPUHOG). Where the earlier models of the switches with little usage of microcontrollers, the later ones do utilize these more.
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