[c-nsp] C3560X Layer 3 throughput

[Chuck Church]

'no ip redirects' doesn't stop the processing of redirects that are
received, it stops the sending of them.  There must be another host that was
sending them that this 3560X was receiving.

Chuck

-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of
David Wilkinson
Sent: Monday, March 07, 2016 4:57 AM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] C3560X Layer 3 throughput

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/softwar
> e/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-nsp at noroutetohost.net <mailto:cisco-nsp at 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.
>
>
>
>     _______________________________________________
>     cisco-nsp mailing list cisco-nsp at puck.nether.net
>     <mailto:cisco-nsp at puck.nether.net>
>     https://puck.nether.net/mailman/listinfo/cisco-nsp
>     archive at http://puck.nether.net/pipermail/cisco-nsp/
>
>

_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/