Yeah, sure. I feel lot better after all these emails, really. I think all options settled in my mind nicely.
I think Cisco would not make us configure some insane situation where we don't have a need for a DLCI map-class, and want us to enter FRTS on the physical IF... The point I am try to make now is - if the task says to config some cir shaping or whatever on the PVC, then we must configure FRTS as well. In other cases, probably we should not bother. There are many multilink ppp commands which are out there and of course we don't need them every time (multiclass, interleave etc.) Just one more from me... I think that we could be asked to configure only fragmentation, and not interleaving at the same time. The latter is needed only when there's realtime traffic (voice mainly.) On slow links we can just fragment the packets to lower serialization delay. Am I right about this? Thanks everybody for participating. Best Regards, Bojan Zivancevic Network Engineer ---- Comutel d.o.o. Omladinskih brigada 65v 11070 Belgrade SERBIA Tel: +381 11 217 8000 Ext.109 Mob: +381 64 646 8401 Fax: +381 11 6164641 http://www.comutel.co.rs -----Original Message----- From: Tyson Scott [mailto:[email protected]] Sent: Friday, January 21, 2011 16:22 To: Bojan Zivancevic; 'Jeferson Guardia'; 'Jay Taylor' Cc: [email protected] Subject: RE: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? Just to follow up on Jeferson's statement my point is don't enable FRTS on the lab just because. Only do it if a task requires it. Interleaving isn't required just to do MLPPPoFR, it will work without it. So don't start enabling features that could cause you problems if you are not taking the time to properly implement the feature. That is my point of being cautious. If you enable FRTS you need to find out what the requirements are for the BW on the circuit and whether you should be accounting for Data or Voice traffic. Now you are spinning cycles on something that if not required is not going to earn you any points. I know extra configuration shouldn't make you lose points but why waste time on something that isn't earning you points. Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities and our public website at www.ipexpert.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bojan Zivancevic Sent: Friday, January 21, 2011 1:03 AM To: Jeferson Guardia; Jay Taylor Cc: [email protected] Subject: Re: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? Ahh, now we are cooking... That's a good point. Just a quick info - the default is 56k. When looking at the cisco doc, they are requiring us to use the "class" inside a DLCI - which means we should set the CIR value every time. And that makes FRTS command inevitable, and justified. But you are right, if there is no DLCI class, FRTS command would probably cause a lot of pain. Best Regards, Bojan Zivancevic Network Engineer From: Jeferson Guardia [mailto:[email protected]] Sent: Friday, January 21, 2011 06:14 To: Jay Taylor Cc: Bojan Zivancevic; [email protected] Subject: Re: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? Guys, Only but ONLY enable FRTS on a lab exam question if inside your map-class you are defining the CIR value of the link bw, otherwise it will set it to default (64k) and you will miss the point if the circuit bw is different than 64k, I would really be cautious about it. Please be careful when taking that approach, it can def. blew up any objective you are trying to achieve. Rgs, Jeferson 2011/1/20 Jay Taylor <[email protected]<mailto:[email protected]>> Very interested to hear as well. Sent from my iPhone On Jan 20, 2011, at 12:42 PM, Bojan Zivancevic <[email protected]<mailto:[email protected]>> wrote: > Tyson, I would like to know more about your statement. Cisco > explicitely asks us to use FRTS, and I did not find any other explanation why not to. > > Why do you think it will cause trouble? Maybe we would lose connectivity? If that is the case we would surely see at once that the link is broken. > > Any other thoughts behind your opinion? > > Best Regards, > > Bojan Zivancevic > Network Engineer > > -----Original Message----- > From: Tyson Scott > [mailto:[email protected]<mailto:[email protected]>] > Sent: Thursday, January 20, 2011 18:38 > To: Bojan Zivancevic; 'Jay Taylor' > Cc: [email protected]<mailto:[email protected]> > Subject: RE: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? > > I would be cautious to take that approach > > Regards, > > Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. > Mailto: [email protected]<mailto:[email protected]> > Telephone: +1.810.326.1444, ext. 208 > Live Assistance, Please visit: www.ipexpert.com/chat<http://www.ipexpert.com/chat> > eFax: +1.810.454.0130 > > IPexpert is a premier provider of Self-Study Workbooks, Video on > Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at www.ipexpert.com/communities<http://www.ipexpert.com/communities> and our public website at www.ipexpert.com<http://www.ipexpert.com> > > -----Original Message----- > From: [email protected]<mailto:[email protected] om> > [mailto:[email protected]<mailto:ccie_rs-bounces@onlinestu dylist.com>] On Behalf Of Bojan Zivancevic > Sent: Thursday, January 20, 2011 7:49 AM > To: Jay Taylor > Cc: [email protected]<mailto:[email protected]> > Subject: Re: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? > > "I do know that should I encounter MLPPPoFR on my next lab attempt > I'll be enabling FRTS regardless!" > > I'll subscribe to that. :) > > Best Regards, > > Bojan Zivancevic > Network Engineer > ---- > > From: Jay Taylor [mailto:[email protected]<mailto:[email protected]>] > Sent: Thursday, January 20, 2011 16:00 > To: Bojan Zivancevic > Cc: Nicolas MICHEL; [email protected]<mailto:[email protected]> > Subject: Re: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? > > I do know that should I encounter MLPPPoFR on my next lab attempt I'll > be enabling FRTS regardless! > > On Thu, Jan 20, 2011 at 9:45 AM, Bojan Zivancevic <[email protected]<mailto:[email protected]><mailto:BZivance [email protected]<mailto:[email protected]>>> wrote: > Yeah, connectivity works, that's for sure. That is why I asked the question in the first place - you just can't be sure what FRTS brings. > > But you have a point, since LFI is a part of QoS, guess in order for > it to work in this situation you need FRTS - for some reason behind the scene. > > Best Regards, > > Bojan Zivancevic > Network Engineer > ---- > > From: Jay Taylor [mailto:[email protected]<mailto:[email protected]><mailto:[email protected] <mailto:[email protected]>>] > Sent: Thursday, January 20, 2011 15:43 > To: Bojan Zivancevic > Cc: Nicolas MICHEL; > [email protected]<mailto:[email protected]><mailto:ccie_ [email protected]<mailto:[email protected]>> > > Subject: Re: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? > > I agree though... basic connectivity works without FTRS enabled. I > would imagine that fragmenting and interleaving would not though. > On Thu, Jan 20, 2011 at 9:26 AM, Bojan Zivancevic <[email protected]<mailto:[email protected]><mailto:BZivance [email protected]<mailto:[email protected]>>> wrote: > Maybe exactly the fact it is in the QoS section means that FRTS has to > be enabled. :) > > And btw it is mentioned in the document, but not explained why. Bah. > Cisco doc often sucks on my opinion. > > Best Regards, > > Bojan Zivancevic > Network Engineer > ---- > Comutel d.o.o. > Omladinskih brigada 65v > 11070 Belgrade > SERBIA > > Tel: +381 11 217 8000 Ext.109 > Mob: +381 64 646 8401 > Fax: +381 11 6164641 > > http://www.comutel.co.rs<http://www.comutel.co.rs/> > > From: Nicolas MICHEL > [mailto:[email protected]<mailto:[email protected]><mailto:mcl.nicol [email protected]<mailto:[email protected]>>] > Sent: Thursday, January 20, 2011 15:20 > To: Jay Taylor > Cc: Bojan Zivancevic; > [email protected]<mailto:[email protected]><mailto:ccie_ [email protected]<mailto:[email protected]>> > Subject: Re: [OSL | CCIE_RS] multink ppp over frame relay - is FRTS mandatory? > > Cant beleive MLPPPoFR is on the QOS section ... I wouldnt have find it without your help Jay ! > > > Thanks > > > > 2011/1/20 Jay Taylor <[email protected]<mailto:[email protected]><mailto:[email protected]<mailto :[email protected]>>> > MLPPPoFR is a royal pain to find... Good stuff to know though! QoS > config guide - http://grab.by/8u9e > > http://www.cisco.com/en/US/customer/docs/ios/qos/configuration/guide/mlppp_o > ver_fr_ps6441_TSD_Products_Configuration_Guide_Chapter.html > > > On Thu, Jan 20, 2011 at 6:03 AM, Bojan Zivancevic <[email protected]<mailto:[email protected]><mailto:BZivance [email protected]<mailto:[email protected]>> >> wrote: > >> One more dilemma on my side... >> >> When I try to enable multilink ppp over FR (virtual-templates >> blablabla) I always get the message >> >> %FR-3-MLPOFR_ERROR: MLPoFR not configured properly on Link >> Virtual-Access1 Bundle Virtual-Access3 : >> Frame Relay traffic shaping must be enabled >> >> I know I have read somewhere that this message should be ignored and >> that in fact MLPPP works without it over FR. But now I can't find it. >> >> And I did not find a sure way to check if it is working or not. Can >> somebody confirm FRTS must be applied or not, and it would be great >> if someone could explain how to verify if MLPPP is really working >> (with or without FRTS.) >> >> Best Regards, >> >> Bojan Zivancevic >> Network Engineer >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, >> please visit www.ipexpert.com<http://www.ipexpert.com><http://www.ipexpert.com> >> > _______________________________________________ > For more information regarding industry leading CCIE Lab training, > please visit www.ipexpert.com<http://www.ipexpert.com><http://www.ipexpert.com> > > > > -- > Nicolas MICHEL > Ingenieur Réseaux et Securité (CCNA/CCNP) > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, > please visit www.ipexpert.com<http://www.ipexpert.com> > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com<http://www.ipexpert.com> _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
