From: Brian McGahan (brian@cyscoexpert.com)
Date: Thu Jul 10 2003 - 16:35:23 GMT-3
Jim,
Actually it would probably be better to use GTS to shape out to
10Mbps, and police in to 10Mbps.
Shaping will buffer the traffic as long as it can to make it to
conform to the rate. As a last ditch effort it will drop it. Policing
on the other hand will just drop the traffic flat out. Once the traffic
is dropped is has to be retransmitted anyways (usually), so it would be
better to shape it out instead of police it.
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
Toll Free: 866.CyscoXP
Fax: 847.674.2625
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Jim Phillipo
> Sent: Wednesday, July 09, 2003 7:37 PM
> To: 'ccielab@groupstudy.com'
> Subject: More CAR
>
> Say you are a ISP with a T3 to a customer. You want to offer them a
> subrate
> service of 10 Mbps.
>
> Wouldn't it make more sense to have both a rate limit input and output
?
> versus just a input rate limit ?
>
> If enough people were doing downloads it seems to me that they could
> exceed
> the limit because there was no output rate limit on the ISP's
interface.
>
> Again this is from the Vegesna book.
>
>
>
> Jim Phillipo, CCNP, CCDP
> Sr. Internetworking Engineer
> W: 401.456.1821 F: 401.456.0599 M: 508.982.8923
> 90 Royal Little Drive, Providence, RI 02904
> www.guardent.com
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