[c-nsp] 6509 w/SUP720-3BXL and high CPU load

Lee Starnes lee.t.starnes at gmail.com
Fri Mar 20 17:44:10 EDT 2020


Hello Gert,

Thanks for the reply. All come up false. I did finally track it down to
mrtg hitting it with 25K packet requests with some old interfaces that were
in its config that are not in the chassis anymore. Once re-created this,
the issue resolved.

-Lee


On Thu, Mar 19, 2020 at 12:00 PM Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Thu, Mar 19, 2020 at 10:28:58AM -0700, Lee Starnes wrote:
> > We are seeing on one of our 6509 chassis high CPU load (50-90%). We are
> not
>
> As ytti said, you're software switching.
>
> Are you carrying full tables, and have hit MLS CEF limits?
>
> ("show mls cef exception status")
>
> If this is showing "TRUE", you've hit "too many prefixes" and need to
> reduce the number of routes this box sees, and then reload (no way to
> normalize without reboot).
>
> If this is showing all FALSE, something else is causing software
> switching.
>
> gert
> --
> "If was one thing all people took for granted, was conviction that if you
>  feed honest figures into a computer, honest figures come out. Never
> doubted
>  it myself till I met a computer with a sense of humor."
>                              Robert A. Heinlein, The Moon is a Harsh
> Mistress
>
> Gert Doering - Munich, Germany
> gert at greenie.muc.de
>


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