From: Jason Sinclair (Jason.Sinclair@powertel.com.au)
Date: Thu Feb 26 2004 - 23:14:40 GMT-3
BTW this post was in response to the CCIE # association - my apologies
Jason Sinclair CCIE #9100
Manager, Network Control Centre/Planned Events Group
POWERTEL
55 Clarence Street,
SYDNEY NSW 2000
AUSTRALIA
office: + 61 2 8264 3820
mobile: + 61 416 105 858
email: sinclairj@powertel.com.au
-----Original Message-----
From: Jason Sinclair
Sent: Friday, 27 February 2004 1:14 PM
To: 'Yasser Aly'; bmcgahan@internetworkexpert.com; karim_ccie@hotmail.com
Cc: ccielab@groupstudy.com
Subject: RE: MQC for bandwidth reservation (max-reserved-bandwidth 100)
As a moderate, perhaps a solution would be to set a maximum within a period and then a deferment period whereby one cannot sit the exam for a window of time such as one year. Perhaps this would also serve to identify the truly patient and dedicated?
Jason Sinclair CCIE #9100
Manager, Network Control Centre/Planned Events Group
POWERTEL
55 Clarence Street,
SYDNEY NSW 2000
AUSTRALIA
office: + 61 2 8264 3820
mobile: + 61 416 105 858
email: sinclairj@powertel.com.au
-----Original Message-----
From: Yasser Aly [mailto:blackyeyes00@hotmail.com]
Sent: Friday, 27 February 2004 1:07 PM
To: bmcgahan@internetworkexpert.com; karim_ccie@hotmail.com
Cc: ccielab@groupstudy.com
Subject: RE: MQC for bandwidth reservation (max-reserved-bandwidth 100)
Hi Brian,
How about if the interface bandwidth equals the pvc bandwidth. For example, if the interface bandwidth is T1 and the PVC speed is configured to be T1. How will this work if " max-reserved-bandwidth "does not apply to a
service-policy called from FRTS ?
Thanks,
Yasser
>From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
>Date: Thu, 26 Feb 2004 19:53:01 -0600
>
> Correct. "max-reserved-bandwidth" does not apply to a
>service-policy called from FRTS. The mincir value alone controls the
>available bandwidth.
>
>
>HTH,
>
>Brian McGahan, CCIE #8593
>bmcgahan@internetworkexpert.com
>
>Internetwork Expert, Inc.
>http://www.InternetworkExpert.com
>Toll Free: 877-224-8987 x 705
>Outside US: 775-826-4344 x 705
>
>
> > -----Original Message-----
> > From: Karim [mailto:karim_ccie@hotmail.com]
> > Sent: Thursday, February 26, 2004 7:34 PM
> > To: Brian McGahan
> > Cc: ccielab@groupstudy.com
> > Subject: Re: MQC for bandwidth reservation (max-reserved-bandwidth 100)
> >
> > Brian,
> >
> > Thanks for your explanation and time. But does this mean that I still
> > multiply 512K by 0.75 to get the avaiable bandwidth ?
> > Also does your comment means that the equation Snyder posted is right ?
> >
> > Frame-Relay Available bandwidth = Minicir -RTP - LLQ - RSVP
> >
> > Take into consideration that the 0.75 wasn't stated in the previous
> > equation.
> >
> >
> > Regards,
> > Karim.
> >
> >
> > ----- Original Message -----
> > From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
> > To: "'Karim'" <karim_ccie@hotmail.com>; <ccielab@groupstudy.com>
> > Sent: Friday, February 27, 2004 3:05 AM
> > Subject: RE: MQC for bandwidth reservation (max-reserved-bandwidth 100)
> >
> >
> > > Karim,
> > >
> > > Assuming you mean a Frame Relay PVC, it depends if you are applying
> > > the service-policy through Frame Relay Traffic Shaping. If you are
> > applying
> > > the service-policy to the interface itself, you should set the
> > "bandwidth"
> > > of the interface to 512. If you are running FRTS you should set the
> > mincir
> > > to 512000. When running FRTS the interface bandwidth value does not
> > apply
> > > to the MQC.
> > >
> > >
> > > HTH,
> > >
> > > Brian McGahan, CCIE #8593
> > > bmcgahan@internetworkexpert.com
> > >
> > > Internetwork Expert, Inc.
> > > http://www.InternetworkExpert.com
> > > Toll Free: 877-224-8987 x 705
> > > Outside US: 775-826-4344 x 705
> > >
> > >
> > > > -----Original Message-----
> > > > From: Karim [mailto:karim_ccie@hotmail.com]
> > > > Sent: Thursday, February 26, 2004 5:46 PM
> > > > To: Brian McGahan; 'Packet Man'; deivi78@hotmail.com;
>antonio.sanchez-
> > > > monge@hp.com; msnyder@revolutioncomputer.com; ccielab@groupstudy.com
> > > > Cc: alsontra@hotmail.com
> > > > Subject: Re: MQC for bandwidth reservation (max-reserved-bandwidth
> > 100)
> > > >
> > > > Hi Brian,
> > > >
> > > > Suppose that we have the following:
> > > > - A customer pvc of 512K.
> > > > - Port speed (interface bandwidth) of 2M.
> > > > - And 64K is reserved for RTP.
> > > > - 64K for LLQ.
> > > >
> > > > What will be the bandwidth value to be configured using the
>interface
> > "
> > > > bandwidth" command ??
> > > > Would it be bandwidth 512, or bandwidth 512* 0.75, or something
>else
> > > > (confused how RTP value will be involved).
> > > >
> > > > Regards,
> > > > Karim.
> > > >
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
> > > > To: "'Packet Man'" <ccie2b@hotmail.com>; <deivi78@hotmail.com>;
> > > > <antonio.sanchez-monge@hp.com>; <msnyder@revolutioncomputer.com>;
> > > > <ccielab@groupstudy.com>
> > > > Cc: <alsontra@hotmail.com>
> > > > Sent: Friday, February 27, 2004 1:14 AM
> > > > Subject: RE: MQC for bandwidth reservation (max-reserved-bandwidth
> > 100)
> > > >
> > > >
> > > > > The interface "bandwidth" command is what the available bandwidth
> > > > > value is based off of.
> > > > >
> > > > > Available bandwidth = (interface_bandwidth *
> > max-reserved-bandwidth/100)
> > > > -
> > > > > RTP - LLQ - RSVP
> > > > >
> > > > > The reason you would need to specify the bandwidth value is when >the
> > > > > provisioned rate of the interface does not match the interface
> > bandwidth
> > > > > command. For example, suppose you have a 1Mbps circuit you are
> > leasing
> > > > that
> > > > > is dropped off as FastEthernet. Although the interface bandwidth >is
> > > > > 100Mbps, it would not make sense to calculate a QoS policy on
> > 100Mbps,
> > > > as
> > > > > the upstream provider is policing at 1Mbps. Therefore the
> > "bandwidth"
> > > > value
> > > > > should be adjusted to 1Mbps.
> > > > >
> > > > >
> > > > > HTH,
> > > > >
> > > > > Brian McGahan, CCIE #8593
> > > > > bmcgahan@internetworkexpert.com
> > > > >
> > > > > Internetwork Expert, Inc.
> > > > > http://www.InternetworkExpert.com
> > > > > Toll Free: 877-224-8987 x 705
> > > > > Outside US: 775-826-4344 x 705
> > > > >
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Packet Man [mailto:ccie2b@hotmail.com]
> > > > > > Sent: Thursday, February 26, 2004 2:31 PM
> > > > > > To: deivi78@hotmail.com; bmcgahan@internetworkexpert.com;
> > > > antonio.sanchez-
> > > > > > monge@hp.com; msnyder@revolutioncomputer.com;
> > ccielab@groupstudy.com
> > > > > > Cc: alsontra@hotmail.com
> > > > > > Subject: RE: MQC for bandwidth reservation
>(max-reserved-bandwidth
> > > > 100)
> > > > > >
> > > > > > Hi,
> > > > > >
> > > > > > I'm not positive about this but my guess and what I've heard is
> > that
> > > > the
> > > > > > bandwidth interface command's function is to let the routing
> > protocol
> > > > how
> > > > > > much bandwidth is avaiable on a link which in turn some
>portocols
> > use
> > > > to
> > > > > > compute cost or metric (OSPF or Eigrp).
> > > > > >
> > > > > > I don't know what bandwidth QoS uses or where it gets the
> > bandwidth
> > > > amount
> > > > > > when it needs to compute a percentage. But, I do know that with
> > some
> > > > QoS
> > > > > > features, various parameters should be based on the actual
> > bandwidth
> > > > > > rather
> > > > > > than the policed or shaped bandwidth. I don't remember all the
> > > > details,
> > > > > > but
> > > > > > I came across this info in the DQoS book.
> > > > > >
> > > > > > HTH
> > > > > >
> > > > > >
> > > > > >
> > > > > > >From: "David Hurtado" <deivi78@hotmail.com>
> > > > > > >Reply-To: "David Hurtado" <deivi78@hotmail.com>
> > > > > > >To: bmcgahan@internetworkexpert.com, antonio.sanchez-
> > monge@hp.com,
> > > > > > >msnyder@revolutioncomputer.com, ccielab@groupstudy.com
> > > > > > >CC: alsontra@hotmail.com
> > > > > > >Subject: RE: MQC for bandwidth reservation (max-reserved-
> > bandwidth
> > > > 100)
> > > > > > >Date: Thu, 26 Feb 2004 19:52:55 +0000
> > > > > > >
> > > > > > >Hello everybody,
> > > > > > >
> > > > > > >I stiil don't know why to use the "bandwidth" command in
> > interface
> > > > mode
> > > > > > >when configuring CBWFQ if you are respecting the
> > > > > > >maximum-reserve-bandwidth limitation:
> > > > > > >
> > > > > > > For example:
> > > > > > >
> > > > > > >class-map match-all ICMP
> > > > > > >match access-group 101
> > > > > > >
> > > > > > > policy-map ICMP_BW
> > > > > > >class ICMP
> > > > > > >bandwidth 128
> > > > > > >
> > > > > > > interface fa1/0/0
> > > > > > >bandwidth 1500 <-----------------------------When does this
> > need
> > to
> > > > > > > be
> > > > > > > specified?
> > > > > > >service-policy output ICMP_BW
> > > > > > >
> > > > > > >128 kbps is not over 75% of the FastEternet BW. Why do i have >to
> > > > > > >configure "bandwidth 1500"?
> > > > > > >
> > > > > > >Could somebody explain it to me, please?
> > > > > > >
> > > > > > >Thanks a lot
> > > > > > >
> > > > > > > >From: "Brian McGahan" >Reply-To: "Brian McGahan" >To:
> > > > > > >"'SANCHEZ-MONGE,ANTONIO (HP-France,ex2)'" , "'Michael
>Snyder'"
> > ,
> > > > > > > >CC: >Subject: RE: MQC for bandwidth reservation
> > > > (max-reserved-bandwidth
> > > > > > >100) >Date: Wed, 25 Feb 2004 14:24:08 -0600 > > As long as you
> > take
> > > > this
> > > > > > >network traffic into account you are fine. >For example, on a
> > GigE
> > > > link,
> > > > > > >it's a little ridiculous to say that 250Mbps of >traffic will >be
> > > > network
> > > > > > >traffic. If you configure a class (i.e. not >class-default)
> > which
> > > > > > >matches your routing traffic and network traffic and >reserve >the
> > > > > > >appropriate bandwidth for it you are fine. > > Depending on the
> > > > platform
> > > > > > >the router may employ it's own queueing >strategy for essential
> > > > network
> > > > > > >control traffic. For more info see this cco >doc: >
> > > > > > > >http://www.cisco.com/warp/public/105/rtgupdates.html > >
> >HTH,
> > >
> > > > >Brian
> > > > > > >McGahan, CCIE #8593 >bmcgahan@internetworkexpert.com >
> > >Internetwork
> > > > > > >Expert, Inc. >http://www.InternetworkExpert.com >Toll Free:
> > > > 877-224-8987
> > > > > > >x 705 >Outside US: 775-826-4344 x 705 > > > > -----Original
> > > > Message-----
> > > > > > > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]
> > On
> > > > Behalf
> > > > > > >Of > > SANCHEZ-MONGE,ANTONIO (HP-France,ex2) > > Sent:
>Wednesday,
> > > > > > >February 25, 2004 10:07 AM > > To: 'Michael Snyder';
> > > > > > >ccielab@groupstudy.com > > Cc: alsontra@hotmail.com > >
>Subject:
> > RE:
> > > > MQC
> > > > > > >for bandwidth reservation (max-reserved-bandwidth 100) > > > > >Hi
> > > > > > >Michael, > > > > -> Won't max-reserved-bandwidth 100 be a good
> > > > default
> > > > > > >command to use with > > MQC interfaces? > > > > Reserving 100% >of
> > the
> > > > > > >total bandwidth may starve the router generated > > traffic and
> > break
> > > > > > >routing protocols and other essential management > > traffic. >
> >
> > > > That's
> > > > > > >why it is 75% by default and not 100%. > > > > Cheers, > > Ato.
> >
> > >
> > >
> > > > >
> > > > > > >-----Original Message----- > > From: Michael Snyder
> > > > > > >[mailto:msnyder@revolutioncomputer.com] > > Sent: miircoles, 25
> > de
> > > > > > >febrero de 2004 16:52 > > To: ccielab@groupstudy.com > > Cc:
> > > > > > >alsontra@hotmail.com > > Subject: RE: MQC for bandwidth
> > reservation
> > > > > > >(max-reserved-bandwidth 100) > > > > > > Well, if you are using
> > more
> > > > that
> > > > > > >75% of the bandwidth value (per the show > > int cmd) then you
> > need
> > > > to
> > > > up
> > > > > > >the upper limit. > > > > R8(config-if)#max-reserved-bandwidth >100
> > >
> > >
> > > > >
> > > > >
> > > > > > >Which brings up a question, > > > > Won't
>max-reserved-bandwidth
> > 100
> > > > be
> > > > a
> > > > > > >good default command to use with MQC > > interfaces? > > > > > > >
> > >
> > >
> > > > >
> > > > >
> > > > > > > > > -----Original Message----- > > From: alsontra@hotmail.com
> > > > > > >[mailto:alsontra@hotmail.com] > > Sent: Wednesday, February 25,
> > 2004
> > > > > > >11:08 AM > > To: SANCHEZ-MONGE,ANTONIO (HP-France,ex2);
> > > > > > >ccielab@groupstudy.com > > Subject: Re: MQC for bandwidth
> > reservation
> > > > >
> > > > >
> > > > > > > > > Thank you Ato. > > > > My question was more in regards of
> > > > whether
> > > > or
> > > > > > >not you have to specify the > > command when reserving
>bandwidth.
> > > > I've
> > > > > > >seen MQC configurations with and > > without the interface
>level
> > > > > > >bandwidth command. I think your saying that I > > only need to
> > > > specify
> > > > > > >bandwidth if the reference bandwidth is different > > than > >
> > the
> > > > > > >interface bandwidth. > > > > > > Thanks > > Alsontra > > > > > > >
> > >
> > >
> > > > >
> > > > >
> > > > > > >----- Original Message ----- > > From: "SANCHEZ-MONGE,ANTONIO
> > > > > > >(HP-France,ex2)" > > monge@hp.com> > > To: ; > > Sent:
>Wednesday,
> > > > > > >February 25, 2004 2:29 AM > > Subject: RE: MQC for bandwidth
> > > > reservation
> > > > > > > > > > > > > Hi Alsontra, > > > > Both bandwidth commands have
> > very
> > > > > > >different meanings. > > > > Under the interface, it means the
> > total
> > > > > > >reference bandwidth. Used for QoS > > but also for routing
> > protocols,
> > > > > > >etc... Normally you need to change it in > > serial interfaces
> > where
> > > > the
> > > > > > >real bandwidth is different from T1, etc... > > > > Under the
> > class
> > > > in
> > > > a
> > > > > > >policy map, it is the bandwidth you want to reserve > > for > >
>a
> > > > > > >particular class. The total reserved bandwidth cannot exceed by
> > > > default
> > > > >
> > > > > > > > 75% of the reference bandwidth. > > > > Cheers, > > Ato. > >
> >
> > >
> > > > > > >-----Original Message----- > > From: nobody@groupstudy.com
> > > > > > >[mailto:nobody@groupstudy.com] On Behalf Of > >
> > alsontra@hotmail.com
> > > > >
> > > > >
> > > > > > >Sent: miircoles, 25 de febrero de 2004 11:01 > > To:
> > > > > > >ccielab@groupstudy.com > > Subject: MQC for bandwidth
>reservation
> > >
> > >
> > > > >
> > > > >
> > > > > > > > > When is the interface level bandwidth command used or
>needed
> > > > with
> > > > > > >MQC? > > > > For example: > > > > class-map match-all ICMP > >
> > > > match
> > > > > > >access-group 101 > > > > policy-map ICMP_BW > > class ICMP > > >
> > > > > > >bandwidth 128 > > > > interface fa1/0/0 >
> > > > > > > > bandwidth 1500 <-----------------------------When does
> > this
> > > > need
> > > > > > >to > > be > > specified? > > service-policy output ICMP_BW
> >
> > >
> > >
> > > > >
> > > > >
> > > > > > > > > > If I don't specify this, what value dose the interface
> > policy
> > > > use?
> > > > > > >The > > interface bandwidth rate? And if so why would I want to
> > > > change
> > > > > > >it? > > > > > > Alsontra > > > >
> > > > > >
> > > >
> > >_______________________________________________________________________
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> >
> >------------------------------------------------------------------------
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> > > > > > >Horsscopo, tarot, numerologma... Escucha lo que te dicen los
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