Hi All,

Quick update, It turns out that redirects were getting punted up to the CPU even with "no ip redirects" in the config. Split up the ranges on to 2 separate VLANs and the CPU dropped to 10% with 0% interupts.

Thanks for your help.

Regards

David



On 17/02/2016 03:55, Adam Baxter wrote:
Looks normal to me. your interrupt is only 6% ~ .

they sit around 50%~ CPU. It will not cause any problems.

This is of my 3750x Switches.

CPU utilization for five seconds: 54%/4%; one minute: 48%; five minutes: 47%

Take a look at the following.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/troubleshooting/cpu_util.html#wp999591

"We consider anything below 50 percent CPU utilization to be acceptable. A sustained level of approximately 50 percent, such as this example, is also acceptable."

Regards,

Adam.

On 17 February 2016 at 04:59, David Wilkinson <cisco-...@noroutetohost.net <mailto:cisco-...@noroutetohost.net>> wrote:

    CEF is enabled, it was the first thing I checked.


    On 16/02/2016 18:17, Hunter Fuller wrote:

        Don't worry about that kind of cpu on these boxes. We have
        dozens in
        production doing only layer 2 traffic and we see usage like this:

        CU234C3560XU01#show proc cpu | inc CPU
        CPU utilization for five seconds: 41%/6%; one minute: 40%;
        five minutes: 40%

        CCRH120C3560XU01#show proc cpu | incl CPU
        CPU utilization for five seconds: 43%/3%; one minute: 39%;
        five minutes: 36%

        CV108c3560Xu01#show proc cpu | incl CPU
        CPU utilization for five seconds: 48%/10%; one minute: 43%;
        five minutes: 41%

    Is that with high levels of throughput?
    This one is doing layer 3 routing.


    On 16/02/2016 18:35, Octavio Alvarez wrote:

        On 02/16/2016 03:53 AM, David Wilkinson wrote:

            Hi all,

            What is the real world expected throughput on the C3560X
            devices when
            doing basic Layer 3 routing?
            We have a customer who has a couple of these and are doing
            around
            50-60Mpbs, around 10Kpps and is hitting around 50% CPU and
            we are
            wondering if this is normal for these switches as it seems
            a little high
            to us.

            The configuarion is very basic, couple of VLANs, HSRP and
            a static route
            providing a default route upsteam.

            Is this normal for the WS-C3560X-24?

        What is the process at fault? (show proc cpu sort and check
        the first
        lines).

    It is mostly interrupt.



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