From: Michael E. Flannagan (mflannag@xxxxxxxxx)
Date: Mon Jan 29 2001 - 12:05:48 GMT-3
The answer to your question is simple: Whatever the ACL defines gets the
defined limits that you match to that ACL with a rate-limit
command. It's not different that any other ACL...you either match, or
you don't.
:-)
------------------------------------------------------------
C i s c o S y s t e m s Michael E. Flannagan
| | Network Consulting Engineer
||| ||| Research Triangle Park, NC
||||||| ||||||| (919) 392-4550
.:|||||||||||:.:|||||||||||:. mflannag@cisco.com
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On Fri, 26 Jan 2001, Gopal@Netlanceconsulting wrote:
> >Server1 used up 10M, can server2 use another 10M? or combined server1 and
> >server2 will be 10M and more traffic is getting dropped.
>
> or combined server1 and server2 will be 10M and more traffic is getting
> dropped.-------This is is correct.
> Server1 used up 10M, can server2 use another 10M? -----this is incorrect.
> basically, it is not meaningful to say server1 used up 10M. CAR defines the
> traffic-rate(bps-bits per sec) but not the amount of traffic. CAR sees hw
> what bps the access-group is pushing. (not caring for individual ip
> addresses). It starts droping after exceeding min/avg burst. And, drops
> everything that goes above max burst.
>
> Hope this helps.
> gopal
>
>
> -----Original Message-----
> From: zheng yi <drnszgy@hotmail.com>
> To: madhu_nk@hotmail.com <madhu_nk@hotmail.com>; dgoldsmi@cisco.com
> <dgoldsmi@cisco.com>
> Cc: ccielab@groupstudy.com <ccielab@groupstudy.com>
> Date: Friday, January 26, 2001 1:30 AM
> Subject: Re: CAR question
>
>
> >
> >Probably I didn't make my question clear. Let me rephase this way.
> >
> >Server1 (1.1.1.1), server2 (1.1.1.2), server3 (1.1.1.3).
> >
> >Server1 used up 10M, can server2 use another 10M? or combined server1 and
> >server2 will be 10M and more traffic is getting dropped.
> >
> >tks
> >Alan
> >
> >
> >
> >
> >>From: "Madhu NK" <madhu_nk@hotmail.com>
> >>To: drnszgy@hotmail.com, dgoldsmi@cisco.com
> >>CC: ccielab@groupstudy.com
> >>Subject: Re: CAR question
> >>Date: Fri, 26 Jan 2001 06:10:51
> >>
> >>Hi,
> >>I think it should be like this:
> >>
> >>a) Traffic from 1.1.1.0 at rate less than 10Mbps go through and anything
> >>more will be dropped.
> >>b) Traffic from 2.2.2.0 at rate less than 20Mbps ( i.e within contract)
> >>will go through after getting precedence remarked to 5.
> >>Traffic out of contract ie above 20M will be dropped.
> >>c)Remaining traffic at rate less than 8 Mbps ( i,e within contract)
> >>will go throught after remarked to precedence 5 and out of contract will
> be
> >>dropped.
> >>
> >>hope this helps
> >>madhu
> >>
> >>
> >>From: "zheng yi" <drnszgy@hotmail.com>
> >>Reply-To: "zheng yi" <drnszgy@hotmail.com>
> >>To: dgoldsmi@cisco.com
> >>CC: ccielab@groupstudy.com
> >>Subject: Re: CAR question
> >>Date: Fri, 26 Jan 2001 04:33:20
> >>
> >>Hi Dave:
> >>
> >> >No, in the example below the users on segment 1.1.1.0 will get 10M
> >>COMBINED
> >> >any amount over is dropped.
> >>
> >>Do you mean all users on 1.1.1.0 can only have combined 10M? Or each
> >>individual user will have 10M?
> >>
> >>tks
> >>Alan
> >>
> >>
> >>
> >> >From: Dave Goldsmith <dgoldsmi@cisco.com>
> >> >Reply-To: Dave Goldsmith <dgoldsmi@cisco.com>
> >> >To: zheng yi <drnszgy@hotmail.com>
> >> >CC: ccielab@groupstudy.com
> >> >Subject: Re: CAR question
> >> >Date: Thu, 25 Jan 2001 23:15:17 -0500
> >> >
> >> >Zheng Yi,
> >> >
> >> >No, in the example below the users on segment 1.1.1.0 will get 10M
> >>combined
> >> >any amount over is dropped. The users on segment 2.2.2.0 will get 20M
> of
> >> >data marked with prec 5 anything over is dropped. Other
> >> >traffic gets 8M of data, past that it is dropped.
> >> >
> >> >dave
> >> >
> >> >interface Serial0/0
> >> > description 45Mbps to R2
> >> > rate-limit input access-group 10 10000000 24000 32000 conform-action
> >> > transmit exceed-action drop
> >> > rate-limit input access-group 12 20000000 24000 32000 conform-action
> >> > set-prec-transmit 5 exceed-action drop
> >> > rate-limit input 8000000 16000 24000 conform-action set-prec-transmit
> >>5
> >> >exceed-action
> >> > drop
> >> > ip address 200.200.14.250 255.255.255.252
> >> >!
> >> >access-list 10 permit ip 1.1.1.0 0.0.0.255
> >> >access-list 12 permit ip 2.2.2.0 0.0.0.255
> >> >
> >> >zheng yi wrote:
> >> >
> >> > > <html><DIV>
> >> > > <P>Hi Dave:</P>
> >> > > <P>I don't quite understand, do you mean "the router will allocate
> 10M
> >> >for all users if I define the network"? If so, does it means
> >> >user1 used up 5M and user2 can only use another 5M?<BR><BR>tks</P>
> >> > > <P>Alan</P></DIV>
> >> > > <DIV></DIV>
> >> > > <DIV></DIV>>From: Dave Goldsmith <DGOLDSMI@CISCO.COM>
> >> > > <DIV></DIV>>Reply-To: Dave Goldsmith <DGOLDSMI@CISCO.COM>
> >> > > <DIV></DIV>>To: zheng yi <DRNSZGY@HOTMAIL.COM>
> >> > > <DIV></DIV>>CC: ccielab@groupstudy.com
> >> > > <DIV></DIV>>Subject: Re: CAR question
> >> > > <DIV></DIV>>Date: Thu, 25 Jan 2001 22:29:30 -0500
> >> > > <DIV></DIV>>
> >> > > <DIV></DIV>>Zheng Yi,
> >> > > <DIV></DIV>>
> >> > > <DIV></DIV>>No, assuming you defined a network for the CAR
> >>statement.
> >> >You could set it up to give 10 to each, but the router doesn't allocate
> >>10M
> >> >for each user if you define the network.
> >> > > <DIV></DIV>>
> >> > > <DIV></DIV>>Dave
> >> > > <DIV></DIV>>
> >> > > <DIV></DIV>>zheng yi wrote:
> >> > > <DIV></DIV>>
> >> > > <DIV></DIV>> >
> >> > > <DIV>Hi: </DIV>
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>
> >> > > <DIV></DIV>> >
> >> > > <P>This is a question on CAR.</P>
> >> > > <DIV></DIV>> >
> >> > > <P>Say if I limit a group of user's traffic to 10M (I can do this by
> >> >defining an access list and control the IP address of this group users),
> >> >the question is if the rate control is aggregate. </P>
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>e.g. (control 1.1.1.0 to have only 10M BandWidth)
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>User1 (at 1.1.1.1) first requesting traffic, and used up
> 5M
> >> >BandWidth.
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>Meanwhile, User2 (at 1.1.1.2) requesting traffic, will
> >>User2
> >> >get another 10M or only get 5M?
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>
> >> > > <DIV></DIV>> >
> >> > > <P>As my understanding, for user1, IOS allocate 10M for
> him since
> >> >user1 IP falls in network 1.1.1.0 </P>
> >> > > <DIV></DIV>> >
> >> > > <P>For user2, IOS will allocate another 10M for him as user2 IP is at
> >> >network 1.1.1.0. </P>
> >> > > <DIV></DIV>> >
> >> > > <P>And as the result, 2 user will get 20M Bandwidth. </P>
> >> > > <DIV></DIV>> >
> >> > > <P>any commends?</P>
> >> > > <DIV></DIV>> >
> >> > > <P>tks </P>
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>Alan<BR clear=all>
> >> > > <HR>
> >> > > Get Your Private, Free E-mail from MSN Hotmail at <A
> >> >href="http://www.hotmail.com/">http://www.hotmail.com>.<BR>
> >> > > <P></P>
> >> > > <DIV></DIV>> >
> >> > > <DIV></DIV>> >
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