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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>One way to go about analyzing this is to look at the product
placement graphs of the major manufacturers and cross-reference that with the
supported configurations.&nbsp; <o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a href="http://www.juniper.net/products/301015.pdf">http://www.juniper.net/products/301015.pdf</a><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://www.cisco.com/en/US/products/hw/routers/index.html">http://www.cisco.com/en/US/products/hw/routers/index.html</a>&nbsp;
(click on Routers for Service Providers)<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have first-hand knowledge of some of the mid- to hi-end Cisco
platforms which enable WRED and some degree of fairness automatically on every
classification type that is created.&nbsp; The user is then capable of
configuring large scale traffic classification and associated QoS. &nbsp;Many
of the large routers have so many interfaces that some degrees of QoS is needed
internally just to keep the links full.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Just about every platform, including my linksys router at
home, supports simple priorities. &nbsp;I have this feature enabled to prevent
my wife&#8217;s photo uploads from knocking my VoIP phone off-line. &nbsp;The
higher-end Cisco routers support what is called the modular QoS CLI which is
basically a set of classification commands and the corresponding QoS treatment
for each class. &nbsp;The first link below makes me think that Juniper has a
similar command set.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Configuration pointers:<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://www.juniper.net/techpubs/software/junos/junos76/swconfig76-cos/html/cos-overview7.html#1024445">http://www.juniper.net/techpubs/software/junos/junos76/swconfig76-cos/html/cos-overview7.html#1024445</a><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a
href="http://www.cisco.com/en/US/products/ps5763/products_configuration_guide_chapter09186a00803b7c7b.html#wp1035219">http://www.cisco.com/en/US/products/ps5763/products_configuration_guide_chapter09186a00803b7c7b.html#wp1035219</a><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Most service providers take provisioning and QoS pretty
seriously since bandwidth and differentiated services are at the heart of their
revenue stream. &nbsp;Big telephone companies seem to have well educated QoS staff
that asks hard questions of routing manufactures. &nbsp;I don&#8217;t have
first-hand knowledge on other zones of the net such as core or customer
premises.&nbsp; However, I have heard more than once that companies deploying
VoIP services internally usually require a re-vamp of their internal QoS before
their fancy new telephones start working as well as the old ones did :)<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I hope this helps,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Chris Kappler<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

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