From: Michael Stout (michaelgstout@hotmail.com)
Date: Sat Dec 02 2006 - 17:35:27 ART
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
_______________________________________________________________________
Subscription information may be found at:
http://www.groupstudy.com/list/CCIELab.html
------------------------------------------------------------------------
Get free, personalized commercial-free online radio with MSN Radio
powered by Pandora
This archive was generated by hypermail 2.1.4 : Tue Jan 02 2007 - 07:50:36 ART