Frame-relay traffic shaping question
Guys, What are the parameters that I should configure on the router to control the bandwidth usage of the user on a frame-relay configuration. For instance, the user has T1 line and I need to provide him only 512k. Is it the CIR, BE, BC, MINCIR, and traffic rate only ? and how do I calculate them ? Thanks a lot ME ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Frame-relay traffic shaping question
A presentation at Melbourne Networkers suggested the following guidelines when configuring frame relay traffic shaping (for data only, not voice). This assumes that you remote site has a lower access rate than the central site (or the same access rate). At remote: Set CIR to match line speed Leave Tc at default (125ms), therefore don't set Bc Set mincir = network 'real' CIR value Don't set Be (default=0) At Central: Set CIR to match remote line speed Leave Tc at default (125ms), therefore don't set Bc Set mincir = network 'real' CIR value Don't set Be (default=0) So in your case you would set cir to 1536000 or whatever a T1 is (sorry, we use E1s here), and mincir to 512000, and leave the rest to default. However note that this will not stop your user from getting above 512 Kbps; it will allow up to the full T1 unless there is congestion - if there is congestion, it will gradually throttle back to 512 Kbps. If you want to put a cap on the amount of bandwidth used, set the CIR parameter to 512 Kbps. This works well (a little too well sometimes - the default value for CIR is 56 Kbps. If you set a frame-relay class command but fail to have a matching frame-relay map-class (e.g. mistyped name), your traffic is limited to 56 Kbps. This can be unfortunate :-) JMcL -- Forwarded by Jenny Mcleod/NSO/CSDA on 18/07/2000 08:55 --- John lay <[EMAIL PROTECTED]> on 18/07/2000 07:46:40 Please respond to John lay <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc: (bcc: JENNY MCLEOD/NSO/CSDA) Subject: Frame-relay traffic shaping question Guys, What are the parameters that I should configure on the router to control the bandwidth usage of the user on a frame-relay configuration. For instance, the user has T1 line and I need to provide him only 512k. Is it the CIR, BE, BC, MINCIR, and traffic rate only ? and how do I calculate them ? Thanks a lot ME ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Frame-relay traffic shaping question
The easiest way to do this is to only configure the CIR and Line speeds and let the rest default. Example commands - int s0 frame-relay traffic shapping Enable FRTS on the interface frame-relay class ExampleClass Shape as defined in map class frame-relay map-class ExampleClass frame-relay traffic-rate XXX YYY ### XXX = CIR, YYY = Max Speed traffic-rate adaptive-shaping becn Use BECNs (not foresight) for for thottling If you set XXX to 512K and YYY to port speed, he will transmit at port speed unless he receives BECNs from the network, and then he will throttle down to 512K. If you set both XXX and YYY to 512K he will always transmit at 512K Depending on your service provider and how congested their network is you may be able to go in and buy a small CIR like 64K and then ignore that and have your router set to send at 512K. If you do that and some time in future your SP starts dropping packets (because they are over CIR) you will have to go to them and buy up your contracted CIR, but until then you can save some money. We've been running AT&T Frame Relay for a couple of years and have yet to receive a single BECN. It is possible to go in and specify mincir, Bc, Be, etc. But unless you are going VOFR or some other application that has specific needs using generic FRTS will cover just about everything. Hope that helps, Mike >Guys, > >What are the parameters that I should configure on the router to control >the >bandwidth usage of the user on a frame-relay configuration. >For instance, the user has T1 line and I need to provide him only 512k. Is >it the CIR, BE, BC, MINCIR, and traffic rate only ? >and how do I calculate them ? > >Thanks a lot >ME Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Frame-relay traffic shaping question
Has anyone used Generic Traffic Shaping for Frame-Relay? The GTS permits the use of Weigh Fair Queue (the FRTS doesn't). I would like to know if GTS works as good as FRTS. Regards, Alex -Mensagem Original- De: Michael Fountain <[EMAIL PROTECTED]> Para: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Enviada em: Segunda-feira, 17 de Julho de 2000 21:59 Assunto: Re: Frame-relay traffic shaping question > The easiest way to do this is to only configure the CIR and Line speeds and > let the rest default. > > Example commands - > > int s0 > frame-relay traffic shapping Enable FRTS on the interface > frame-relay class ExampleClass Shape as defined in map class > > frame-relay map-class ExampleClass > frame-relay traffic-rate XXX YYY ### XXX = CIR, YYY = Max Speed > traffic-rate adaptive-shaping becn Use BECNs (not foresight) > for for thottling > > > If you set XXX to 512K and YYY to port speed, he will transmit at port > speed unless he receives BECNs from the network, and then he will throttle > down to 512K. > If you set both XXX and YYY to 512K he will always transmit at 512K > > Depending on your service provider and how congested their network is you > may be able to go in and buy a small CIR like 64K and then ignore that and > have your router set to send at 512K. If you do that and some time in > future your SP starts dropping packets (because they are over CIR) you will > have to go to them and buy up your contracted CIR, but until then you can > save some money. We've been running AT&T Frame Relay for a couple of years > and have yet to receive a single BECN. > > It is possible to go in and specify mincir, Bc, Be, etc. But unless you > are going VOFR or some other application that has specific needs using > generic FRTS will cover just about everything. > > Hope that helps, > Mike > > > >Guys, > > > >What are the parameters that I should configure on the router to control > >the > >bandwidth usage of the user on a frame-relay configuration. > >For instance, the user has T1 line and I need to provide him only 512k. Is > >it the CIR, BE, BC, MINCIR, and traffic rate only ? > >and how do I calculate them ? > > > >Thanks a lot > >ME > > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Frame-relay traffic shaping question
Wizards, As the FRTS has been brought up here, I really want to take this chances to get some help from you in understanding this. When we enable the 'frame-relay traffice shaping' under the inferface, we start using frame-relay traffice shaping not generic shaping, right? in the map-class of frame relay, we can configure CIR, Bc and Be, how is this different from just configure 'traffic-rate xx yy' in the map-class? As far as I understand, it is not quite effective to controll QoS in FR, I am not sure whether someones have seen some detailed perfermence comparation betwee two kinds of traffic shaping. Thanks Kent --- Michael Fountain <[EMAIL PROTECTED]> wrote: > The easiest way to do this is to only configure the > CIR and Line speeds and > let the rest default. > > Example commands - > > int s0 > frame-relay traffic shapping Enable FRTS on > the interface > frame-relay class ExampleClass Shape as > defined in map class > > frame-relay map-class ExampleClass > frame-relay traffic-rate XXX YYY ### XXX = > CIR, YYY = Max Speed > traffic-rate adaptive-shaping becn Use > BECNs (not foresight) > for for > thottling > > > If you set XXX to 512K and YYY to port speed, he > will transmit at port > speed unless he receives BECNs from the network, and > then he will throttle > down to 512K. > If you set both XXX and YYY to 512K he will always > transmit at 512K > > Depending on your service provider and how > congested their network is you > may be able to go in and buy a small CIR like 64K > and then ignore that and > have your router set to send at 512K. If you do > that and some time in > future your SP starts dropping packets (because they > are over CIR) you will > have to go to them and buy up your contracted CIR, > but until then you can > save some money. We've been running AT&T Frame > Relay for a couple of years > and have yet to receive a single BECN. > > It is possible to go in and specify mincir, Bc, > Be, etc. But unless you > are going VOFR or some other application that has > specific needs using > generic FRTS will cover just about everything. > > Hope that helps, > Mike > > > >Guys, > > > >What are the parameters that I should configure on > the router to control > >the > >bandwidth usage of the user on a frame-relay > configuration. > >For instance, the user has T1 line and I need to > provide him only 512k. Is > >it the CIR, BE, BC, MINCIR, and traffic rate only ? > >and how do I calculate them ? > > > >Thanks a lot > >ME > > > Get Your Private, Free E-mail from MSN Hotmail at > http://www.hotmail.com > > ___ > UPDATED Posting Guidelines: > http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: > http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Get Yahoo! Mail Free email you can access from anywhere! http://mail.yahoo.com/ ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Frame-relay traffic shaping question
As far as I know, they are both equal. So you can do it by either way. Please someone correct. Thanks a lot guys, On Tue, 18 Jul 2000 10:08:56 -0700 (PDT), Kent wrote: > Wizards, > > As the FRTS has been brought up here, I really want to > take this chances to get some help from you in > understanding this. > > When we enable the 'frame-relay traffice shaping' > under the inferface, we start using frame-relay > traffice shaping not generic shaping, right? > > in the map-class of frame relay, we can configure CIR, > Bc and Be, how is this different from just configure > 'traffic-rate xx yy' in the map-class? > > As far as I understand, it is not quite effective to > controll QoS in FR, I am not sure whether someones > have seen some detailed perfermence comparation betwee > two kinds of traffic shaping. > > Thanks > > Kent > > --- Michael Fountain <[EMAIL PROTECTED]> wrote: > > The easiest way to do this is to only configure the > > CIR and Line speeds and > > let the rest default. > > > > Example commands - > > > > int s0 > > frame-relay traffic shapping Enable FRTS on > > the interface > > frame-relay class ExampleClass Shape as > > defined in map class > > > > frame-relay map-class ExampleClass > > frame-relay traffic-rate XXX YYY ### XXX = > > CIR, YYY = Max Speed > > traffic-rate adaptive-shaping becn Use > > BECNs (not foresight) > > for for > > thottling > > > > > > If you set XXX to 512K and YYY to port speed, he > > will transmit at port > > speed unless he receives BECNs from the network, and > > then he will throttle > > down to 512K. > > If you set both XXX and YYY to 512K he will always > > transmit at 512K > > > > Depending on your service provider and how > > congested their network is you > > may be able to go in and buy a small CIR like 64K > > and then ignore that and > > have your router set to send at 512K. If you do > > that and some time in > > future your SP starts dropping packets (because they > > are over CIR) you will > > have to go to them and buy up your contracted CIR, > > but until then you can > > save some money. We've been running AT&T Frame > > Relay for a couple of years > > and have yet to receive a single BECN. > > > > It is possible to go in and specify mincir, Bc, > > Be, etc. But unless you > > are going VOFR or some other application that has > > specific needs using > > generic FRTS will cover just about everything. > > > > Hope that helps, > > Mike > > > > > > >Guys, > > > > > >What are the parameters that I should configure on > > the router to control > > >the > > >bandwidth usage of the user on a frame-relay > > configuration. > > >For instance, the user has T1 line and I need to > > provide him only 512k. Is > > >it the CIR, BE, BC, MINCIR, and traffic rate only ? > > >and how do I calculate them ? > > > > > >Thanks a lot > > >ME > > > > > > > Get Your Private, Free E-mail from MSN Hotmail at > > http://www.hotmail.com > > > > ___ > > UPDATED Posting Guidelines: > > http://www.groupstudy.com/list/guide.html > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com > > Report misconduct and Nondisclosure violations to > [EMAIL PROTECTED] > > > __ > Do You Yahoo!? > Get Yahoo! Mail Free email you can access from anywhere! > http://mail.yahoo.com/ > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Frame-relay traffic shaping question
I'm not very familiar with generic traffic shaping. But, at first glance it looks like it is basically the same thing as frame relay traffic shaping except that it does not dynamically change based on network congestion because there is no method set up to notify the router of any congestion encountered. Using 'frame-relay traffic-shaping' indicates that the router can change the traffic rate based on becns or foresight notifications of congestion. You will have to use a 'frame-relay map-class' to tell the router how you want to shape the traffic. With generic traffic shaping you can specify the rate directly on the interface because you do not need to tell it what sort of congestion notification to listen to. When you use the command 'frame-relay traffic-rate 64000 128000' (for example) you get the following values - mincir - 32000- This is amount sent when congested CIR - 64000 - This is the amount to send with no congestion bc - 64000- This is the amound to send per interval be - 64000- This is the burst amount to send in the first interval tc - 125 - This is the interval time in milliseconds The router will send out traffic in the following pattern each second (for tc=125 or 1/8 or a second) when there is no congestion bc+be / bc / bc / bc / bc / bc / bc / bc so for this config it would send - 128000 / 0 / 0 / 0 / 0 / 0 / 0 / 0 then it would repeat that for the next second. By doing it like this the router attempts to send the full amount of traffic every second. You can go in and specify the Bc, Be, CIR, and mincir to be other values to try and shape the traffic in different ways, but there is rarely any need to. For example, if you were to use the following config map-class frame-relay test frame-relay cir 128000 frame-relay mincir 64000 frame-relay bc 8000 frame-relay be 64000 you would get the following traffic pattern - 72000 / 8000 / 8000 / 8000 / 8000 / 8000 / 8000 / 8000 So, you would still get 128K in the one second. The problem with this is that the router can only bust beyond Bc (up to Be) when it has excess bandwidth available. So, if it keeps sending at 8000 then it will be at 64000 each second after that. Until it has transmitted a second with less then 64000. Lets say in one interval it only transmitts 6000. So, next interval it was an excess of 2000 that it can transmit as Be. This can continue until it was built up 64000 which is the max Be it can ever have. Its sorta like roll-over minutes for cellular phones :) By using the the 'frame-relay traffic-rate xxx yyy' command you are fooling the router into sending max Be every second. It thinks its Bc is 64000 so the in the intervals it cant send traffic (because it hit line speed in the first interval) it builds up credit again so it can burst at full Be on the next seconds interval. It really depends on how you want your traffic shaped and what sort of applications are running over the link. But, if they aren't extremely time sensitive, the generic command should work. The one thing to watch for in the 'frame-relay traffic-rate xxx yyy' command is that it assumes your mincir is 1/2 your average speed value. So, if you set your average to your contracted CIR and the router encounters congestion, it will slow down to the mincir which is half of that. To get around this you can set your average speed to double your CIR. If you order your CIR at 1/2 your line speed (128K port, 64K CIR) you can use something like this 'frame-relay traffic-shaping 128000 128000' The router will run at 128000 unless it hits congestion and then it will run at 64000. Hope that helps. Mike > >Wizards, > >As the FRTS has been brought up here, I really want to >take this chances to get some help from you in >understanding this. > >When we enable the 'frame-relay traffice shaping' >under the inferface, we start using frame-relay >traffice shaping not generic shaping, right? > >in the map-class of frame relay, we can configure CIR, >Bc and Be, how is this different from just configure >'traffic-rate xx yy' in the map-class? > >As far as I understand, it is not quite effective to >controll QoS in FR, I am not sure whether someones >have seen some detailed perfermence comparation betwee >two kinds of traffic shaping. > >Thanks > >Kent > >--- Michael Fountain <[EMAIL PROTECTED]> wrote: > > The easiest way to do this is to only configure the > > CIR and Line speeds and > > let the rest default. > > > > Example commands - > > > > int s0 > > frame-relay traffic shapping Enable FRTS on > > the interface > > frame-relay class ExampleClass Shape as > > defined in map class > > > > frame-relay map-class ExampleClass > > frame-relay traffic-rate XXX YYY ### XXX = > > CIR, YYY = Max Speed > > traffic-rate adaptive-shaping becn Use > > BECNs (not foresight) > >
RE: Frame-relay traffic shaping question
In VoIPoFR (not good implementation- but in my situation VoFR was much worse)- we tried both, but finally used FRTS- we needed FRF.12 fragmentation and some other things. But you should evaluate at your own- weght all pros and contras- values and restrictions (RSVP, queuenig, your VC structure and so on). Regards, Ruslan Tchinyakov. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Alexandre Eduardo Garcia Sent: Tuesday, July 18, 2000 8:12 PM To: Michael Fountain; [EMAIL PROTECTED] Subject: Re: Frame-relay traffic shaping question Has anyone used Generic Traffic Shaping for Frame-Relay? The GTS permits the use of Weigh Fair Queue (the FRTS doesn't). I would like to know if GTS works as good as FRTS. Regards, Alex -Mensagem Original- De: Michael Fountain <[EMAIL PROTECTED]> Para: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Enviada em: Segunda-feira, 17 de Julho de 2000 21:59 Assunto: Re: Frame-relay traffic shaping question > The easiest way to do this is to only configure the CIR and Line speeds and > let the rest default. > > Example commands - > > int s0 > frame-relay traffic shapping Enable FRTS on the interface > frame-relay class ExampleClass Shape as defined in map class > > frame-relay map-class ExampleClass > frame-relay traffic-rate XXX YYY ### XXX = CIR, YYY = Max Speed > traffic-rate adaptive-shaping becn Use BECNs (not foresight) > for for thottling > > > If you set XXX to 512K and YYY to port speed, he will transmit at port > speed unless he receives BECNs from the network, and then he will throttle > down to 512K. > If you set both XXX and YYY to 512K he will always transmit at 512K > > Depending on your service provider and how congested their network is you > may be able to go in and buy a small CIR like 64K and then ignore that and > have your router set to send at 512K. If you do that and some time in > future your SP starts dropping packets (because they are over CIR) you will > have to go to them and buy up your contracted CIR, but until then you can > save some money. We've been running AT&T Frame Relay for a couple of years > and have yet to receive a single BECN. > > It is possible to go in and specify mincir, Bc, Be, etc. But unless you > are going VOFR or some other application that has specific needs using > generic FRTS will cover just about everything. > > Hope that helps, > Mike > > > >Guys, > > > >What are the parameters that I should configure on the router to control > >the > >bandwidth usage of the user on a frame-relay configuration. > >For instance, the user has T1 line and I need to provide him only 512k. Is > >it the CIR, BE, BC, MINCIR, and traffic rate only ? > >and how do I calculate them ? > > > >Thanks a lot > >ME > > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
