Re: MQC QOS

From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Sep 10 2004 - 14:46:38 GMT-3


Thanks, I never noticed that. I'll try to play around with those commands
some more to get a better feel for when to use which contruct. I'm fairly
sure those differences were never highlighed in the DQoS book by Wendell
Odom or anywhere else for that matter.

----- Original Message -----
From: "Lord, Chris" <chris.lord@lorien.co.uk>
To: "Bob Sinclair" <bsin@cox.net>; "ccie2be" <ccie2be@nyc.rr.com>; "Group
Study" <ccielab@groupstudy.com>
Sent: Friday, September 10, 2004 6:33 AM
Subject: RE: MQC QOS

> Tim,
>
> If you type into the router the two constructs exactly as you have them,
> you will find that the "police X" command you type-in gets converted into
> "police cir X" when you do a sh run. Hence the two are identical and
> utilise a single bucket construct.
>
> However, it is the syntax of the more sophisticated options which may be
> specified which determines whether the new or old two-bucket construct is
> used as per Bob's description.
>
> Chris
>
> -----Original Message-----
> From: Bob Sinclair [mailto:bsin@cox.net]
> Sent: 09 September 2004 02:14
> To: ccie2be; Group Study
> Subject: Re: MQC QOS
>
>
> 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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