#PUNTO SWITCHER ALTERNATIVE HOW TO#
#PUNTO SWITCHER ALTERNATIVE DRIVER#
#PUNTO SWITCHER ALTERNATIVE VERIFICATION#
#PUNTO SWITCHER ALTERNATIVE SOFTWARE#

Switch# show processes cpu sort | ex 0.00Д¬PU utilization for five seconds: 91%/30% one minute: 30% five minutes: 8%

The Address Resolution Protocol (ARP) Input process is currently the top IOSВ® process that consumes the resources:.

The second number (30%) is the utilization caused by interrupts from the data plane.

The first number (91%) is the overall CPUВ utilization of the switch.

CPU utilization for five seconds: 91%/30%.

There are two valuable pieces of information from this output: When you add the output modify | exclude 0.00, itВ will filter out the processes that are currently idle. The show process cpu command is used in order to display the current process state inside of the IOSd daemon. Identify the Process that Consumes CPU Cycles

#PUNTO SWITCHER ALTERNATIVE VERIFICATION#

The troubleshoot and verification process in this section can be broadly used for high CPU usage due to interrupts. Please note that it covers a selected processes at the time of write this section.Д¬ase Study 1. This section gives a systematic workflow to triage High CPU issues on the switches. High-Level diagram of the communication path between the Data Plane andВ Control Plane: LSMPI: Linux Shared Memory Punt Interface.

Inject: CP generated protocol packet sent to DP to egress out on IO interface(s).

Punt: Ingress protocol control packet which intercepted by DP sent to the CP to process it.

Data Plane (DP): Typically the data planeВ encompasses the hardware ASICs and traffic that is forwarded without assistance from the Control Plane.

This also includes application layer protocols like Secure Shell (SSH), and Simple Network Management Protocol (SNMP) that must be handled by the CPU This includes traffic such as Spanning Tree Protocol (STP), Hot Standby Router Protocol (HSRP), and routing protocols that are destined to the switch, or sent from the switch.

Control Plane (CP): The control plane is a generic term used to group together the functions and traffic that involve the CPU of the Catalyst Switch.

As an example, it controls how packets are delivered from the FED to the IOSd and vice versa

Packet Delivery System (PDS): This is the architecture and process of how packets are delivered to and from the various subsystems.

#PUNTO SWITCHER ALTERNATIVE SOFTWARE#

It is run as a software process within the kernel

IOSd: This is the Cisco IOSВ® daemon that runs on the Linux kernel.

#PUNTO SWITCHER ALTERNATIVE DRIVER#

Forwarding Engine Driver (FED): This is the heart of the Cisco Catalyst switch and is responsible for all hardware programming/forwarding.Cisco IOSВ®-XE retains not only the same look and feel of the classic Cisco IOSВ®, but also its operation, support, and management.

Cisco IOSВ® itself runs as a daemon within the Linux OS (IOSd). All of the subsystems that were inside Cisco IOSВ® before - such as the modules drivers, High Availability (HA), and so on - now run as software processes within the Linux Operating System (OS). With Cisco IOSВ®-XE, Cisco has moved to a Linux kernel and all of the subsystems have been broken down into processes. It is important to understand how Cisco IOSВ®-XE is built. Additionally, this document introduces several new commands on this platform that are integral in order to troubleshoot such problems.

#PUNTO SWITCHER ALTERNATIVE HOW TO#

This document describes how to troubleshoot high CPU usage concerns, primarily due to interrupts, on the new Cisco IOSВ®-XE platforms that run 16.x releases (also referred to as Polaris).

Punto switcher alternative