[cisco-voip] Auto-QoS ?

Tue Jun 5 18:29:34 EDT 2007

Can you do it on an ATM interface?

Scott

-----Original Message-----
From: Jonathan Charles [mailto:jonvoip at gmail.com] 
Sent: Tuesday, June 05, 2007 2:58 PM
To: Voll, Scott
Cc: ciscovoip
Subject: Re: [cisco-voip] Auto-QoS ?

Oh, it also adds this:

rmon event 33333 log trap AutoQoS description "AutoQoS SNMP traps for
Voice Drop
s" owner AutoQoS
rmon alarm 33333 cbQosCMDropBitRate.34.5364641 30 absolute
rising-threshold 1 33
333 falling-threshold 0 owner AutoQoS

Jonathan

On 6/5/07, Jonathan Charles <jonvoip at gmail.com> wrote:
> On the Serial Interface:
>
> auto qos voip trust
>
> and it adds this:
>
> class-map match-any AutoQoS-VoIP-RTP-Trust
>  match ip dscp ef
> class-map match-any AutoQoS-VoIP-Control-Trust
>  match ip dscp cs3
>  match ip dscp af31
>
> policy-map AutoQoS-Policy-Trust
>  class AutoQoS-VoIP-RTP-Trust
>   priority percent 70
>  class AutoQoS-VoIP-Control-Trust
>   bandwidth percent 5
>  class class-default
>   fair-queue
>
> interface Serial0/0
>  auto qos voip trust
>  service-policy output AutoQoS-Policy-Trust
>
>
> I don't like the percentages, I prefer to nail in the bandwidth on the
> priority and bandwidth commands to match up with locations-based CAC.
>
> Jonathan
>
> On 6/5/07, Voll, Scott <Scott.Voll at wesd.org> wrote:
> > You can setup Auto QoS on routers?  What's the command?
> >
> > Scott
> >
> > -----Original Message-----
> > From: cisco-voip-bounces at puck.nether.net
> > [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jonathan
> > Charles
> > Sent: Tuesday, June 05, 2007 2:27 PM
> > To: Carter, Bill
> > Cc: cbomba at s4nets.com; cisco-voip at puck.nether.net
> > Subject: Re: [cisco-voip] Auto-QoS ?
> >
> > OK, but here's the question no one is answering...
> >
> > Saying "Auto-QOS sucks" is all well and good, but first off, some of
> > us are not CCIEs... and also, have you ever actually experienced a
> > voice quality issue with the Auto-QOS on Cisco switches?
> >
> > To be perfectly honest, I have come across so many installations
(some
> > quite large) with NO layer-2 QOS that I find it difficult to
> > understand how it Auto-QOS could be a problem.
> >
> > That being said, when the 3560s first came out, Auto-QOS strangled
> > non-priority traffic to about 4MB/sec on a GigE switch... (since
fixed
> > by code updates)...
> >
> > All in all, I think AQ has matured to a point of being perfectly
> > acceptable for LAN Switching...
> >
> > On the other hand, I didn't even realize Auto-QOS was available for
> > routers until recently (I was so comfortable with CBWFQ that I never
> > even looked into the automatic way), when I did finally run into it,
> > it just spews in the same config I would do by hand anyway...
> >
> >
> >
> > Jonathan
> >
> > On 6/5/07, Carter, Bill <bcarter at sentinel.com> wrote:
> > > AutoQoS on the switches still maps COS 3 to DSCP AF31(26), when
> > current
> > > SRND and CM installations set call control to DSCP CS3(24).  I run
> > > autoqos on the switches then adjust the map.
> > >
> > > -----Original Message-----
> > > From: cisco-voip-bounces at puck.nether.net
> > > [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jonathan
> > > Charles
> > > Sent: Tuesday, June 05, 2007 3:10 PM
> > > To: Paul Choi
> > > Cc: cbomba at s4nets.com; cisco-voip at puck.nether.net
> > > Subject: Re: [cisco-voip] Auto-QoS ?
> > >
> > > I would agree on the Router-side.. but for the switches, it is far
> > more
> > > likely to have positive results than the manual method...
> > > especially without years of experience configuring your queues...
> > >
> > > To be honest, the auto-qos dumps config into the switch that is,
A:
> > > Cisco TAC supported, B: Likely to work great and C: easy.
> > >
> > > Why wouldn't you use it? Unless you have a lot of SNA traffic or
> > > something...
> > >
> > >
> > > Jonathan
> > >
> > >
> > > On 6/5/07, Paul Choi <asobihoudai at yahoo.com> wrote:
> > > > Auto-QoS, better known as "QoS for idiots" (like
> > > > myself) is a cookie cutter approach to your network. I think
it's
> > > > better not to use if you have the knowhow to implement QoS
yourself.
> > > >
> > > > --- "Christopher M. Bomba" <cbomba at s4nets.com> wrote:
> > > >
> > > > > I have implemented QoS on multiple voice networks from 6500s
to
> > > > > 2950s.  I have done it always manually.  The network I am
working
> > on
> > >
> > > > > now is insisting on Auto-QoS.  I haven't done it before but
only
> > > > > heard horror stories from it.
> > > > >
> > > > > What are you thoughts on this?  This is a very large network
that
> > is
> > >
> > > > > going to have multiple clusters and thousands of devices
connected
> > > > > to the IPT network.
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Chris
> > > > >
> > > > > _______________________________________________
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> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> >
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