From: Bill Eyer (beyer@optonline.net)
Date: Thu Jul 03 2008 - 07:41:30 ART
I have also came across references that indicate that a routers "own"
packets for routing protocols, usually marked with ip prec 6 are queued
independently without enabling a queueing mechanism. This does not seem
to translate to the next-hop router though, in other words each router
specially queues it's own routing protocol packets but if they go
through a switch there is no special queueing. Off hand, I can't think
of a way to verify this.
Bill
Tyson Scott wrote:
> By default the DSCP field is not interpreted without turning on a
> queueing mechanism. By default FIFO.
>
> On Wed, Jul 2, 2008 at 6:15 PM, Morris, Jason L. <Jasmorris@checkngo.com> wrote:
>
>> Just to clarify and dispel my ignorance...
>>
>> There is no 'default' 'per hope behavior' for a Cisco router or switch
>> that depends on DSCP markings? Those markings are just so you can
>> classify traffic and then manually configure PHB on each device right?
>> That's been my assumption up to this point but I was review some QoS
>> stuff in a buddies ONS - CCNP book and it inferred (or at least made me
>> question) that the router was doing something different with EF marked
>> packets without explicitly being told to...
>>
>> That's not the case right? It doesn't by default, out of the box, treat
>> differently marked DSCP traffic differently?
>>
>> Jason Morris
>>
>>
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