[c-nsp] DHCP Snooping on Cat3850

[Antoine Monnier]

CSCva40478 ?
"ip dhcp snooping trust on port-channel does not reflect on member link"

On Tue, Sep 27, 2016 at 9:26 AM, Lukas Tribus <luky-37 at hotmail.com> wrote:

> Hi,
>
>
> the IOS thread for DHCP snooping is hogging CPU, either it is swamped by
> incoming DHCP traffic (although this should be rate-limited, not causing
> 50% CPU load) or the thread got into a infinite loop because of a bug.
>
> Disabling/Enabling DHCP snooping may close the thread and restart it,
> maybe bringing it back to live or reload the switch.
>
> Other than that you will probably have to troubleshoot with TAC.
>
>
> As long as DHCP snooping takes over 50% of the CPU, it means it has a
> serious problem and cannot handle your actual DHCP traffic.
>
>
>
> cheers,
> lukas
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