[c-nsp] Rate-Limit Problem

[a. rahman isnaini r. sutan]

" brutal rate-limiting "

I completely agree with this :)
And always use a combination of rate-limit input & traffic-shape

a. r. isnaini rangkayo sutan


----- Original Message ----- 
From: "Paolo Lucente" <pl+list at pmacct.net>
To: "Paul Stewart" <paul at paulstewart.org>
Cc: "'cisco-nsp'" <cisco-nsp at puck.nether.net>
Sent: Friday, December 21, 2007 4:44 AM
Subject: Re: [c-nsp] Rate-Limit Problem


> Hi Paul,
>
> also consider the access rate (100Mbps) is much higher than your CIR (some
> 4Mbps); this means that TCP tests will perform badly unless you introduce
> some sort of egress shaping instead of that brutal rate-limiting which 
> just
> drops non-conforming packets. Rate-limiting and policing are generally
> suitable egress only for UDP and multicast traffic. They are also suitable
> ingress to avoid customers pumping too much traffic at the edges (in which
> case, again if the access rate of the medium is higher than the CIR, they
> should be shaping outbound).
>
> Cheers,
> Paolo
>
>
> On Thu, Dec 20, 2007 at 03:46:05PM -0500, Paul Stewart wrote:
>> Can anyone tell me why this doesn't work?  We have this implemented in
>> dozens of other locations and it works fine...
>>
>> Cisco 2621 router
>>
>> interface FastEthernet0/0.10
>>  description Office LAN
>>  encapsulation dot1Q 10
>>  ip address 216.168.114.57 255.255.255.248
>>  rate-limit input 4200000 2100 2100 conform-action transmit exceed-action
>> drop
>>  rate-limit output 4200000 2100 2100 conform-action transmit 
>> exceed-action
>> drop
>>
>>
>> When we run tests, we can barely get 200Kb/s up or down....??
>>
>> Thanks,
>>
>> Paul
>>
>>
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>>
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