Re: MQC QOS

From: Bob Sinclair (bsin@cox.net)
Date: Wed Sep 08 2004 - 22:14:16 GMT-3


Tim,

I think you will find that the practical effects of the commands as you
enter them are the same. The police cir/pir syntax is a 12.2(4)T feature
that implements a Two Rate Three Color Marker per RFC 2698. With this
feature you can specify two independent rates to set the boundaries of
conform/exceed/violate. This is more sophisticated and easier to implement
than the single-rate, two-bucket (be) three-color marker. Here is an
example of using cir/pir:

police cir 1000000 pir 2000000 conform transmit, exceed set-dscp-transmit 10
violate drop

The first 1 Mbps conforms, traffic between 1 and 2 Mbps exceeds, and traffic
over 2 Mbs violates. This is easier with this syntax than with the old,
where you would have to figure out a Be for the upper limit.

HTH,

Bob Sinclair
CCIE #10427, CISSP, MCSE
www.netmasterclass.net

----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "Group Study" <ccielab@groupstudy.com>
Sent: Wednesday, September 08, 2004 8:30 PM
Subject: MQC QOS

> Hi guys,
>
> What's the difference between these 2 constructs?
>
> police cir 256000
>
> police 256000
>
> My goal is to restrict traffic to 256000 bps.
>
> TIA, Tim
>
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