From: Dmitry Volkov (dmitry.volkov@rogers.com)
Date: Tue May 11 2004 - 23:20:05 GMT-3
I believe that 25% is reserved for routing protocols, etc - sourced and
destined for router,
i.e. for packets marked with pak_priority for non-RSP routers
http://www.cisco.com/en/US/partner/tech/tk543/tk544/technologies_tech_note09
186a0080094612.shtml
What is about LDP - is it included in these 25% ?
and what's about BGP traversing router ? I believe it should be placed in
user defined queue to minimize drop probability..
Interesting what is QoS behavior for GSR and SUP 720 ? How pak_priority
traffic is handled there ?
Thanks,
Dmitry
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On
> Behalf Of Carlos G Mendioroz
> Sent: Tuesday, May 11, 2004 7:35 PM
> To: Tomikawa
> Cc: ccielab@groupstudy.com
> Subject: Re: Priority Queue
>
>
> I would say that in CBWFQ, class-default is not 25%, but
> rather whatever
> is left.
> Bandwidth allocation using either bandwidth or priority is
> done at layer
> 3, so that 25% (100% - max-reserved) accounts for layer 2
> overhead and
> keep-alives, routing protocol exchanges, etc.
>
> In priority queuing, there are no warranties. I'm not sure
> about control
> trafic, but L2 overhead will go with the packet it belongs
> to, whichever
> queue it uses :-)
>
> Tomikawa wrote:
>
> > Hi all.
> >
> > I have a simple question regarding priority queue to make sure.
> > I know CBWFQ has a default class, 25% bandwidth by default,
> for routing
> > protocol, L2 frame and etc.
> > I was auguring with my co-workder about priority queue.
> >
> > I check all documents and I hope I am correct, but just
> want to make sure.
> > In priority queuing, there is no such things, routing
> protocol, or L2
> > frames (network management packets)
> > you must define in High or Medium queue whatever you want.
> >
> > Is this correct?
> >
> > Thanks in advance.
> >
> >
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>
> --
> Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
>
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