Re: Tracking traffic usage at router or switch port?

[Spencer Ryan <sryan () arbor net>]

I would monitor it wherever you would do traffic shaping/policing. If that
happens on the CPE monitor it there. If the CPE is just all Layer2 back to
a router or whatever and the router is doing rate limiting monitor it
there. For circuits that run at wirespeed with no limits
(10/100/1000/10k/etc) the same logic applies, just monitor the bandwidth
where you would normally do the policing.


*Spencer Ryan* | Senior Systems Administrator | sryan () arbor net
*Arbor Networks*
+1.734.794.5033 (d) | +1.734.846.2053 (m)
www.arbornetworks.com

On Wed, Jun 1, 2016 at 1:58 PM, Jason Lee <jason.m.lee () gmail com> wrote:

> NANOG Community,
>
> Typically where would you expect a service provider to monitor bandwidth
> usage on your circuits? On the physical switch port interface or on the
> vlan interface at the router? In some of the field testing I've been doing
> there can be a difference in the bandwidth usage on the vlan interface at
> the router vs the physical switch port. Is there any particular reason for
> using one vs the other? Is there an industry best practice for this?
>
> Thanks,
>
> Jason