This is correct. It's not AutoQoS that causes the problem- its because you MUST have FRTS enabled in order for the map-class to be attached to the DLCI. And this must happen since the service policy is inside the map-class.
I recommend you run AutoQoS on all routers when doing WAN QoS or at the very least attach a map-class to all DLCI's. Also be careful if you are using cRTP. You should ensure that if you are using cRTP that both ends of the pipe are configured with cRTP otherwise you will experience one way audio. Vik Malhi – CCIE #13890 Managing Partner - IPexpert, Inc. Telephone: +1.810.326.1444 ext 420 Fax: +1.810.454.0130 Mailto: [email protected] On Dec 3, 2011, at 10:59 AM, ccielabrat wrote: > Hey everyone, > I can confirm after A LOT of testing, if you are given a QOS requirement for > only one of the two Frame PVCs, and you use Auto QOS, you will have a problem. > > Auto QOS will automatically config "Frame-relay Traffic shaping" on the > physical WAN interface and then configure the PVC you are QOS'ing to the > bandwidth that is noted under the sub interface. > The other sub interface gets left with the default "frame-relay traffic > shaping" behavior which is to drop CIR to 56k on the PVC. > > Do a "Show Frame PVC <dlci#>" on both PVC's after running auto qos. > > I think this could be an intended Rat hole on the exam. > If you only have to configure Hq-SB QOS and you don't know much more the to > run autoqos and tweak a couple parameters, your SC communications will start > to fail with a PVC CIR of 56k. > > > On Sat, Dec 3, 2011 at 10:00 AM, Ken Wyan <[email protected]> wrote: > Hi, > > I think you got 56k value from this document which was published in 2005 with > IOS version 11. (somehow same age as QoS SRND) > > http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a00800942f8.shtml > > I think it's better to put auto qos voip or auto qos voip fr-atm in the > remaining interface as well (without any bandwidth as it's not mentioned in > exam). Then it"ll take 1.5M by default. > > Is there a command to verify that FRTS use 56k bandwidth because above > documents are very old. > > Ken > > > > > > > On Sat, Dec 3, 2011 at 8:54 AM, ccielabrat <[email protected]> wrote: > To All, > > I've been trying to figure the best/fastest way to get a WAN QOS requirement > completed on exam day. > > I've become very comfortable with Auto-QOS and making the needed tweaks, so > Auto-QOS is the way I'm going to use. > > The one piece of the strategy that I'm stilll wondering about is if WAN QOS > is specified for only one of the PVC's. > Auto-QOS will automatically put Frame-relay traffic shaping on the physical > interface which has the side effect of leaving the "other" pvc with a 56k PVC > speed. > > My solution here is to create a frame-relay map-class with the following > parameters. > > map-class frame-relay Not56k > frame-relay traffice-rate 1536 > > I apply this map-class to the "other" sub-interface/PVC which negates the 56k > problem. > > I'm curious if anyone has an opinion on the Pros/Cons of this approach and if > it might negate requirements somehow. > > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
