From: Radioactive Frog (pbhatkoti@gmail.com)
Date: Sat Mar 03 2007 - 22:43:56 ART
Hi Victor,
Thanks for your explaination.
Further to this topic,
If customer is sharing 1:4 contention ratio for 1 megs bandwidth. Should wel
shape him to 256 kbps (CIR) when there is any congestion?
Frog
On 2/21/07, Victor Cappuccio <victor@ccbootcamp.com> wrote:
>
> Hey RAF :D
>
> Now for the class-default you have there; see that the bandwidth you
> configured is know as Class Based WFQ. and we can control how much minimum
> BW a class can get in case of congestion
>
> The formula is: Available_Bandwidth = (Configured_Bandwidth *
> max-reserved-bandwidth/100) - (LLQ - RTP - RSVP)
>
> r1(config)#class-map FTP
> r1(config-cmap)#ma proto ftp
> r1(config-cmap)#exit
> r1(config)#policy-map PLAY
> r1(config-pmap)#class FTP
> r1(config-pmap-c)#band 1000
> r1(config-pmap-c)#exit
> r1(config-pmap)#class class-default
> r1(config-pmap-c)#band 100
> r1(config-pmap-c)#exit
> r1(config-pmap)#int f0/0
> r1(config-if)#ser out PLAY
> r1(config-if)#do show queue f0/0
> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
> Queueing strategy: Class-based queueing
> Output queue: 0/1000/64/0 (size/max total/threshold/drops)
> Conversations 0/0/256 (active/max active/max total)
> Reserved Conversations 2/2 (allocated/max allocated)
> Available Bandwidth 73900 kilobits/sec
>
> we just took out some Kilobits out of that 75% available BW.
>
> Lets modify the policy map a little bit
>
> r1(config-if)#policy-map PLAY
> r1(config-pmap)# class ftp
> r1(config-pmap-c)#do show queue f0/0 | in Ava
> Available Bandwidth 0 kilobits/sec
> r1(config-pmap-c)#bandwidth 10000
> r1(config-pmap-c)#do show queue f0/0 | in Ava
> Available Bandwidth 64900 kilobits/sec
>
> r1(config-pmap-c)# bandwidth 100000
> I/f FastEthernet0/0 Class ftp requested bandwidth 100000 (kbps) Only 74900
> (kbps) available
>
> if we take more than the available BW for that interface
> The, bandwidth measured in kbps, is an absolute reservation, and is not
> based on the available bandwidth of the interface.
>
> See that the BW operates per each class
>
> r1(config-if)#do show policy-map int f0/0 | in Band|Class
> Class-map: ftp (match-all)
> Bandwidth 74900 (kbps)Max Threshold 64 (packets)
> Class-map: class-default (match-any)
> Bandwidth 100 (kbps)Max Threshold 64 (packets)
> r1(config-pmap-c)#band 60000
> r1(config-pmap-c)#do show policy-map int f0/0 | in Band|Class
> Class-map: ftp (match-all)
> Bandwidth 60000 (kbps)Max Threshold 64 (packets)
> Class-map: class-default (match-any)
> Bandwidth 100 (kbps)Max Threshold 64 (packets)
>
> and other classes BW is not affected.
>
>
> As a side note, When frame-relay traffic-shaping on a physical interface
> the concept of interface Available Bandwidth disappears, and max-reservable
> bandwidth is equal to mincir of the dlcis.- Just for FYI.
>
>
> thanks,
> Victor Cappuccio.-
> Network Learning Inc - A Cisco Sponsored Organization (SO) YES! We take
> Cisco Learning credits!
> victor@ccbootcamp.com
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>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com on behalf of Radioactive Frog
> Sent: Wed 2/21/2007 3:40
> To: M S
> Cc: ccielab@groupstudy.com
> Subject: Re: traffic shaping
>
> Hi Contention is a ration for bandwidth sharing.
> If I have 2 megs uplink (internet bandwidth) and distributing to 10 people
> (of 2 megs each) that would be 1:10 ratio (in ISP term we call it
> Contention.
>
> Cheers
>
>
> On 2/21/07, M S <michaelgstout@hotmail.com> wrote:
> >
> > I do not understand the question.
> > What do you mean by contention.
> > what two things represent the ratio
> >
> > ------------------------------
> > From: *"Radioactive Frog" <pbhatkoti@gmail.com>*
> > Reply-To: *"Radioactive Frog" <pbhatkoti@gmail.com>*
> > To: *"Cisco certification" <ccielab@groupstudy.com>*
> > Subject: *traffic shaping*
> > Date: *Wed, 21 Feb 2007 11:59:02 +1100*
> > Hi Guys,
> >
> > I am simulating:
> >
> > Internet--fas0/0----7204router----fas0/1---------Customers..
> >
> >
> > Gold (1:1 contention) - IP address 10.1.1.0/24
> > Silver (10:1 contention) - IP add 20.1.1.0/24
> > bronze (50:1 contention) - IP add 30.1.1.0/24
> >
> > ip access-list extended Gold
> > permit ip any 10.1.1.0 255.255.255.0
> >
> > ip access-list extended silver
> > permit ip any 20.1.1.0 255.255.255.0
> >
> > ip access-list extended bronze
> > permit ip any 30.1.1.0 255.255.255.0
> >
> > !
> > class-map match-all Gold
> > match access-group name Gold
> >
> > class-map match-all Silver
> > match access-group name silver
> >
> > class-map match-all bronze
> > match access-group name bronze
> >
> > !
> > !
> > policy-map shape-all-traffic
> > class gold
> > bandwidth 10000
> > class silver
> > bandwidth 20000
> > class bronze
> > bandwidth 30000
> >
> > class class-default
> > bandwidth 60000 <--------sum of all class????? Is it
> necessary
> > ?
> > !
> >
> > Interface fas0/1
> > service policy shape-all-traffic out
> >
> >
> > Will this work? Any co
> >
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