From: M S (michaelgstout@hotmail.com)
Date: Sat Dec 02 2006 - 20:17:18 ART
Many thanks to you for all of your assistance, as well!
--------------------------------------------------------------------
From: JB <jellyboy@gmail.com>
To: "Michael Stout" <michaelgstout@hotmail.com>
CC: ccielab@groupstudy.com
Subject: Re: congestion management bandwidth/priority
Date: Sat, 2 Dec 2006 23:12:14 +0000
Rereading the question... it does say *at least* 1.5Mb. This would
rule out the priority command here.
Many thx for the replies.
JB
On 12/2/06, Michael Stout <michaelgstout@hotmail.com> wrote:
>
>
>
>a service policy that uses the bandwidh 1500 will guarantee at least
>1.5
>meg.
>breaking the sentence apart will help
>setting the bandwidth to 1500 does guarantee 1500. It will also
>allow the
>bandwidth to exceed 1.5 meg if space is available.
>at least means at a minimum but implies that more than 1.5 can be
>made
>available. I think this is the key word.
>also, Cisco uses the term guarantee to describe the bandwidth
>statement.
>Here is a link to the univercd:
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hqos_r/qos_a1h.htm#wp1117802
>
>priority 1500 provides a maximum of 1500 bytes of bandwidth, any
>excess
>traffic will be dropped.
>Here is a quote: "Beyond the guaranteed bandwidth, the priority
>traffic will
>be dropped in the event of congestion to ensure that the nonpriority
>traffic
>is not starved."
>
>I cannot find a statement that says priority is used for real time
>traffic
>like voice and video, but i think that should be considered.
>
>
> ________________________________
>
>From: JB <jellyboy@gmail.com>
>Reply-To: JB <jellyboy@gmail.com>
>To: "ccielab@groupstudy.com" <ccielab@groupstudy.com>
>Subject: congestion management bandwidth/priority
>Date: Sat, 2 Dec 2006 17:50:55 +0000
>
>Hi, I am doing a QoS question that asks to "guarantee at least
>1.5Mbps
>of the output Queue on the interface"
>
>
>Using bandwidth:
>
>policy-map SMTP
>class SMTP
> bandwidth 1500
>
>Rack1R5#sh policy-map
> Policy Map SMTP
> Class SMTP
> Bandwidth 1500 (kbps) Max Threshold 64 (packets)
>
>Using priority:
>
>policy-map SMTP
>class SMTP
> priority 1500
>
>Rack1R5#sh policy-map
> Policy Map SMTP
> Class SMTP
> Strict Priority
> Bandwidth 1500 (kbps) Burst 37500 (Bytes)
>
>What I can see from the output is that both reserve 1500kbps
>bandwidth. With the priority however it is guarenteed the LLQ. Do
>both
>of these satisfy what the question is asking for?
>
>TIA
>
>JB
>
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