Show Memory Usage Cisco
Punted traffic is the traffic that is processed and forwarded through less- efficient means for a reason, such as tunneling or encryption. Additional Documents Another document on Cisco.com focuses on specific high utilization issues in the Catalyst 3750 switch, although the information also applies to other switches. You can collect the data manually or automatically, using this UNIX shell script. Field Definition Process Processed packets. http://supportcanonprinter.com/high-cpu/ccmexec-exe-high-memory-usage.html
Which command causes the router to attempt to produce a core dump when it crashes? 2. However, the set interface null 0 parameter is an exception. You can also use the "Foundation Summary" section to quickly review topics. See the “Configuring Port-Based Traffic Control” chapter in the switch software configuration guide. http://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/15095-highcpu.html
Show Memory Usage Cisco
- Issue the show platform health command.
- Non-IP and non-IPX router ACLs (RACLs) Non-IP RACLs apply to all supervisor engines.
- As each tool/command is introduced, its usefulness is described and tips are given on how to use it effectively.
- When the switch hardware is punting packets, the row named sw forwarding is incrementing.
- show ip traffic Shows a count of IP packet types received by the switch.
- Remember that this process is a background process.
After you enter the command, allow some time for the buffered debug messages to subside and for the debugging message buffer to empty. Thanks. The Virtual Exec process is responsible for the VTY lines (Telnet sessions). Ip Input High Cpu You can see the packets that are received and dropped for these 16 queues in the output of the show platform cpu packet statistics all command.
If you issue the show processes cpu command, you can see that two main processes, Cat4k Mgmt LoPri and Spanning Tree , primarily use the CPU. Cisco Router High Cpu Interrupts Logging buffer size should be increased in order to capture sufficient information. Obtaining Documentation and Submitting a Service Request For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation, which also https://supportforums.cisco.com/discussion/10366736/how-read-cpu-utilization Because of this, the table becomes full, the L3 aging process goes high, and the CPU usage hits 100%.
Multicast Listener Discovery (MLD) snooping (TTL = 1) This traffic is indeed destined to the router. Fed Process Cisco Then, to run it every five minutes, add the following line to the /etc/crontab file: */5 * * * * /usr/bin/router-script Restart the cron server. How are those numbers interpreted? Cisco IOS learns about routes from routing protocols—such as BGP, RIP, OSPF, EIGRP, and IS-IS—and from statically configured routes.
Cisco Router High Cpu Interrupts
Here is an example on an SP console: Router-sp#test monitor session 1 show Ingress Source Ports: 3/3 15/1 Egress Source Ports: 3/3 Ingress Source Vlans:
The output of the show platform health command confirms the use of the CPU in order to process CPU-bound packets. http://supportcanonprinter.com/high-cpu/exchange-2010-store-exe-high-memory-usage.html This way you can eliminate the IOS bug from your troubleshooting steps. In this case, use the CPU SPAN in order to determine the traffic that hits the CPU. You can police traffic on the MAC address, the IPv4 header, the IPv6 header (if IPv6 is supported on the switch), or the Layer 4 port number. Hulc Led Process High Cpu
Excessive ARP and DHCP traffic hits the CPU for processing due to a large number of directly connected hosts If you suspect a DHCP attack, use DCHP snooping to rate-limit DHCP Also, whenever you decide to upgrade Cisco IOS Software on your router, you should verify the recommended amount of memory for the new software version.As with CPU usage, it is useful This diagram shows a Catalyst 4500 with three trunk ports that each carry VLANs 1 through 100. this contact form In order to prevent this problem, remove the log keyword from the ACLs.
Switch#show platform tcam utilization CAM Utilization for ASIC# 0 Max Used Masks/Values Masks/values Unicast mac addresses: 784/6272 12/26 IPv4 IGMP groups + multicast routes: 144/1152 6/26 IPv4 unicast directly-connected routes: 784/6272 Arp Input High Cpu Table 1 lists the queues and the packet types that queue in each. If the utilization is above 50%, are you encouraged to debug packets or to debug events?
The switch will never report CPU utilization at 0%.
This RPF check helps to guarantee that the distribution tree is loop-free. These scenarios can cause heavy CPU usage by the SNMP engine system process: Multiple servers simultaneously performing an SNMP query. 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 Ip Input High Cpu Cisco 3750 This section reviews the commands that an administrator uses in order to narrow down the problem of high CPU utilization.
However, even if you decide to focus your troubleshooting effort on configuration errors initially, as your work progresses and you eliminate common configuration problems from the equation, you might pick up Therefore, use these releases on your Catalyst 4500 deployments. When the CPUAdj counts are rapidly incrementing, many IP packets are being forwarded to the CPU for IP routing. http://supportcanonprinter.com/high-cpu/svchost-exe-high-memory-usage-windows-7.html A sample debugging session of IP packets is provided in Troubleshooting High CPU Utilization in the IP Input Process.
PBR forwards these packets, which can cause ping or Telnet failure or route protocol flapping. You can eliminate these issues from your troubleshooting steps. Determine if a CPU utilization problem is the result of too many network packets or of an active system process running on the switch. Table 2 – Description of the Platform-Specific Processes from the show platform health Command Platform-Specific Process Name Description Pim-review Chassis/line card state management Ebm Ethernet bridge module, such as aging and
You enable summary routes on peer routers.