From: JB (jellyboy@gmail.com)
Date: Sat Dec 02 2006 - 20:12:14 ART
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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