From: soon ccie (soonccie@yahoo.com)
Date: Wed Mar 05 2003 - 16:38:18 GMT-3
The question does not state it whether it is in congestion or not in congestion, so it could be
BOTH. If you use LLQ, you would add a priority queue which is processed before others, but the
question does not explitely require that.
Task: "ensure tftp traffic on int s0/0 to have 10% of bandwidth and drop the traffic if it goes
above 10%".
I still need confirmation if below is OK, i.e. (1) IOS accepts the config, (2)whether or not there
is congestion, the bandwidth is reserved and it can not goes above:
policy-map police-my
class class-tftp
bandwidth 154400 !****** should I add this line?
police 154400 conform-action transmit exceed-action drop !*****10% =154,400
int s0/0
service-policy output police-my
--- Dave Swink <dswink@austin.rr.com> wrote:
> Does your requirement specify this behavior all of the time, or just in
> times of congestion? LLQ will guarantee the configured percentage of
> bandwidth for a class and then drop class traffic over that percentage when
> congested.
>
> Dave Swink
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> soon ccie
> Sent: Tuesday, March 04, 2003 8:05 PM
> To: Brian McGahan; ccielab@groupstudy.com
> Subject: RE: Police and Bandwidth Allocation
>
>
> Thanks Brian!
>
> So, how to meet the requirement: "ensure tftp traffic on int s0/0 to have
> 10% of bandwidth and
> drop the traffic if it goes above 10%".
>
> Shouldn't we do reservation and policing at the same time? (IOS does not
> seem to complain when
> putting both commands in.) I'm a little concerned policing along would not
> meet the req since it
> does not reserve bandwidth.
>
>
>
> --- Brian McGahan <brian@cyscoexpert.com> wrote:
> > Traffic policing is not a bandwidth reservation; therefore it doesn't
> > have anything to do with the interface bandwidth nor the percentage that
> > can be allocated.
> >
> > As a side note, you can change the amount of reservable bandwidth on an
> > interface with the 'max-bandwidth-percent' interface command. See the
> > following link for more detail:
> >
> > http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_
> > guide09186a0080087af0.html
> >
> >
> > For more detail on traffic policing:
> >
> > http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_configur
> > ation_guide_chapter09186a00800bd8ed.html
> >
> >
> >
> > HTH
> >
> > Brian McGahan, CCIE #8593
> > Director of Design and Implementation
> > brian@cyscoexpert.com
> >
> > CyscoExpert Corporation
> > Internetwork Consulting & Training
> > Toll Free: 866-CyscoXP
> > Outside US: 847.674.3392
> > Fax: 847.674.2625
> >
> >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of
> > > soon ccie
> > > Sent: Sunday, March 02, 2003 4:00 PM
> > > To: ccielab@groupstudy.com
> > > Subject: Police and Bandwidth Allocation
> > >
> > > Can anyone confirm that the total bandwidth specified in the police
> > > command seems bypass the
> > > default 75% bandwidth check?
> > >
> > > In the example below, s0/0 is T1, so 75% = 1,158,000, but 1,200,000 is
> > > accepted:
> > > policy-map police-my
> > > class class-http
> > > police 1000000 conform-action transmit exceed-action drop
> > > class class-tftp
> > > police 200000 conform-action transmit exceed-action drop
> > > class class-default
> > >
> > > int s0/0
> > > service-policy output police-my
> > >
> > > My big question is then: Does the police command is actually allowcate
> > the
> > > bandwidth to the
> > > individual classes? Note that if I switch police to bandwidth command
> > > above, the policy would not
> > > be accepted because of default 75% rule.
> > >
> > >
> > >
> > > If I have a task stated as "ensure tftp traffic on int s0/0 to have
> > 10% of
> > > bandwidth and drop the
> > > traffic if it goes above 10%", so soln could it be(???):
> > >
> > > policy-map police-my
> > > class class-tftp
> > > bandwidth percent 10 !****** should I add this line?
> > > police 154400 conform-action transmit exceed-action drop !*****
> > 10% =
> > > 154,400
> > > int s0/0
> > > service-policy output police-my !*** IOS accepts this.
> > >
> > > Thanks.
> > >
> > >
> > > __________________________________________________
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> >
>
>
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