From: Tom Rogers (cccie71@yahoo.com)
Date: Sat Jun 12 2004 - 13:34:24 GMT-3
Scott,
The way I read it, correct me if I am wrong, CBWFQ applied directly on a FR interface will affect all the PVCs on that interface and map-class can be applied to selected ones.
So if we re to guarantee certain bandwidth without any restrictions to any PVCs we can go ahead and apply service-policy directly on the interface.
Tom
Scott Morris <swm@emanon.com> wrote:
The idea of calling a service-policy on the interface versus within FRTS has
to do with where you are queuing things.
If you apply it to the interface, you will queue equally for ALL PVCs on
that interface. You may also find that there are restrictions to queuing on
a sub-interface and may NEED to use FRTS to call the service-policy (or do
nested CBWFQ policies).
If you use FRTS though, you can get down to applying different policies to
different PVCs even though they all reside on the same interface. Does it
matter? Perhaps. Watch your lab, and watch the specifics you are trying to
achieve!
If you set CIR to the speed of the interface, traffic-shaping does still
happen. It's just that the effect is relatively moot since you're using
everything. Even though the default of all PVC's will go to 56k with Tc =
125ms as soon as you enable traffic shaping, you can always override this
with a class applied to other PVC's that you don't care as much about giving
them lower values.
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIP, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Richard Dumoulin
Sent: Saturday, June 12, 2004 5:58 AM
To: Tom Rogers; ccielab@groupstudy.com
Subject: RE: frame-relay traffic QoS
If you choose the frame-relay traffic-shaping way you could set the CIR to
the speed of the interface so that traffic shaping actually never happens.
--Richard
-----Original Message-----
From: Tom Rogers [mailto:cccie71@yahoo.com]
Sent: sabado, 12 de junio de 2004 5:30
To: ccielab@groupstudy.com
Subject: frame-relay traffic QoS
Hi all,
I have basic question. If NO traffic shaping is asked and we re to guarantee
protocol x to 90kbps using policy-map going out,
then can do we apply serivice-policy on the FR interface outward directly or
do we have to call this service-policy from map-class and apply this
map-class in FR interface after enabling traffic-shaping.
What is confusing me is with no cir value given the FR traffic shaping would
default to 56K and I just want to guarantee protocol x 90kbps.
Tom
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This archive was generated by hypermail 2.1.4 : Sat Jul 03 2004 - 19:40:39 GMT-3