From: ying chang (ying_c@xxxxxxxxxxx)
Date: Tue Apr 16 2002 - 11:37:57 GMT-3
Hi all,
http://www.cisco.com/warp/public/105/carburstvalues.html explains bc is
based on 1.5 secs, so I think I'll stick with Alex's way to calculate bc and
be unless those numbers are given. i.e. If I'm asked to calculate to limited
the output rate to 56 kbps without any other info, I'll use
1. configuration rate = 56000 bps
2. bc = 56000/8*1.5 = 10500 bytes
3. be = 2 * bc = 2 * 10500 = 21000 bytes
to get
rate-limit input access-group 100 56000 10500 21000 conform-action transmit
Thanks,
Chang
Thanks,
Chang
>From: "Alex Paulino" <Alex@2s.com.br>
>To: "ying chang" <ying_c@hotmail.com>
>Subject: RE: CAR
>Date: Mon, 15 Apr 2002 23:28:00 -0300
>
>Hi Mr Chang, i also have this doubt, but take a look this:
>
>normal burst = configured rate * (1 byte)/(8 bits) * 1.5 seconds
>extended burst = 2 * normal burst
>
>
>this is on
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/qos_c/
qcprt4/qcdpolsh.htm
>
>Let me know what you think about this....
>
>Regards
>alex
>-----Original Message-----
>From: ying chang [mailto:ying_c@hotmail.com]
>Sent: Monday, April 15, 2002 10:47 PM
>To: johnnyt@netcat.com; steven.j.nelson@bt.com; ccielab@groupstudy.com
>Subject: RE: CAR
>
>
>Can you tell us how you calculate bps, burst-normal and burst-max? I know
>sometimes these numbers are given, but if you take the 56k circuit as an
>example, if burst-normal is 8000 bytes, isn't that exceeded 56k bps
>already?
>
>
> >From: "Johnny Tsao" <johnnyt@netcat.com>
> >Reply-To: "Johnny Tsao" <johnnyt@netcat.com>
> >To: <steven.j.nelson@bt.com>, <ccielab@groupstudy.com>
> >Subject: RE: CAR
> >Date: Mon, 15 Apr 2002 17:21:28 -0700
> >
> >http://www.cisco.com/univercd/cc/td/doc/product/software/ios111/cc111/car.ht
> >m#xtocid2554214
> >
> >
> >int e1/0
> >----------56k-----------
> >rate-limit input access-group 100 48000 8000 16000 conform-action
>transmit
> >exceed-action drop
> >rate-limit output access-group 100 48000 8000 16000 conform-action
>transmit
> >exceed-action drop
> >
> >int e1/1
> >----------128k----------
> >rate-limit input access-group 100 120000 8000 16000 conform-action
>transmit
> >exceed-action drop
> >rate-limit output access-group 100 120000 8000 16000 conform-action
> >transmit
> >exceed-action drop
> >
> >int e1/2
> >----------256k----------
> >rate-limit input access-group 100 248000 8000 16000 conform-action
>transmit
> >exceed-action drop
> >rate-limit output access-group 100 248000 8000 16000 conform-action
> >transmit
> >exceed-action drop
> >
> >int e1/3
> >----------512k----------
> >rate-limit input access-group 100 504000 8000 16000 conform-action
>transmit
> >exceed-action drop
> >rate-limit output access-group 100 504000 8000 16000 conform-action
> >transmit
> >exceed-action drop
> >
> >access-list 100 permit ip any any
> >access-list 100 permit tcp any any
> >access-list 100 permit udp any any
> >
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> >steven.j.nelson@bt.com
> >Sent: Monday, April 15, 2002 5:49 AM
> >To: ccielab@groupstudy.com
> >Subject: CAR
> >
> >
> >Hi All,
> >
> >Can someone please post a CAR config with some "Idiot Proof" Notes, I
>have
> >some LLQ stuff which I believe is similar, but I need to look at CAR in
> >general.
> >
> >Thanks
> >
> >Steve
> >
> >Steve Nelson
> >Customer Engineer
> >BT Ignite- National Solutions
> >T: +44 (0)1422 338881 M: +44 (0)7811 944172
> >e-mail: steven.j.nelson@bt.com
> >pp HW A170, PO Box 200(HOM-NZ), London, N18 1ZF
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