This document (BRKARC-2017) turned out to be very useful to determine the possible root-cause. The utilization of the spp and netio processes increase if the router/line-card is software switching traffic, in our case ICMP. We will test the policing feature and implement it. On Wed, Apr 20, 2016 at 1:17 AM, Micah Croff <micahcroff@gmail.com> wrote:
I've experienced similar behavior on other platforms as well. Sometimes the output of the box is not correct. We were able to prove this to the vendor by conducting experiments and graphing the CPU. One of the protocols they said "couldn't possibly be causing this" turned out to be the root of the problem.
I live by one rule when troubleshooting: The box is a lie.
Micah
On Tue, Apr 19, 2016 at 4:06 PM, Laurent Dumont <admin@coldnorthadmin.com> wrote:
It coincides with nothing else? More traffic? CPU increasing at regular intervals every day without any obvious reasons is probably something worth looking into!
On 4/18/2016 2:14 PM, Scott Weeks wrote:
--- regezos@gmail.com wrote: From: Rukka Pal <regezos@gmail.com>
How do you guys troubleshoot high CPU utilization on the ASR-9K
Detailed guides are available for IOS platforms, but I can't seem to find anything useful for the ASR.
The average line-card (0/0/CPU0: A9K-24x10GE-TR) CPU utilization of my routers is about 10%, however recently I have noticed that 3-5 times a day it increases to 40% and stays there for about an hour (20% spp + 10% netio + the rest).
I know this is well withing the acceptable range, but I am the kind of person who likes to understand every change in his network and during
platform? the
investigation I had to realize that I simply don't have the tools to troubleshoot the ASR CPU. -----------------------------------
On cisco: sho proc cpu
scott