QoS Traffic shaping and peak shaping

Hi,
Could somebody tell me what is the difference between traffic shaping and peak shaping?
Kind Regards.

Standard traffic shaping (the shape average command) will keep the average rate of the traffic to the limit you specify, which should be the committed rate of your circuit.
Peak shaping will also do traffic shaping (using queues, etc), guaranteeing a minimum rate, but will allow traffic to levels to burst above your configured (committed) rate.
From the documentation:
Traffic shaping limits the rate of transmission of data. In addition to using a specifically configured transmission rate, you can use Generic Traffic Shaping (GTS) to specify a derived transmission rate based on the level of congestion.
You can specify two types of traffic shaping; average rate shaping and peak rate shaping. Average rate shaping limits the transmission rate to the CIR. Using the CIR ensures that the average amount of traffic being sent conforms to the rate expected by the network.
Peak rate shaping configures the router to send more traffic than the CIR. To determine the peak rate, the router uses the following formula:
peak rate = CIR(1 + Be / Bc)
where:
â¢Be is the Excess Burst size.
â¢Bc is the Committed Burst size.
Peak rate shaping allows the router to burst higher than average rate shaping. However, using peak rate shaping, the traffic sent above the CIR (the delta) could be dropped if the network becomes congested.
If your network has additional bandwidth available (over the provisioned CIR) and the application or class can tolerate occasional packet loss, that extra bandwidth can be exploited through the use of peak rate shaping. However, there may be occasional packet drops when network congestion occurs. If the traffic being sent to the network must strictly conform to the configured network provisioned CIR, then you should use average traffic shaping.
Examples
The following example sets the uses average rate shaping to ensure a bandwidth of 256 kbps:
shape average 256000
The following example uses peak rate shaping to ensure a bandwidth of 300 kbps but allow throughput up to 512 kbps if enough bandwidth is available on the interface:
bandwidth 300
shape peak 512000

Similar Messages

How does QoS work with WAAS WCCP? What's the interaction between QoS Traffic Classification and WAE Traffic Application Policy?

How does QoS work with WAAS WCCP? What's the interaction between Router QoS Traffic Classification and WAE Traffic Application Policy?

By default, WAAS preserves the DSCP marking on intercepted packets. There is a configuration option to set/override the DSCP value at the global (device), application, and classifier levels. Currently WAAS provides marking only. There is no action taken by WAAS based on the DSCP value.
Regards,
Zach

Catalyst 2950-EMI, QoS, traffic classification and shaping

Dear All,
Can 2950-EMI perform traffic classification and shaping?
Let's say I have some workstations attached on my 2950 and I want to perform traffic classification and shaping on the uplink based on the IP address of workstations.
Thanks a lot.
mak

Shaping is not supported. But you can classify and use policing instead.
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/12120ea2/2950scg/swqos.htm

Configuring QoS for FIOS Router MI-424WR: Traffic Priority and Shaping

Please only read on if you are an experienced internet user familiar with setting the advanced QoS and Firewall settings for the MI-424WR and make use of wireless adaptors from a PC to provide connectivity.
This is my first post and my first week since I moved from Time Warner Cable over to FIOS for iNet (plus HDTV and phone).     While all my services work, the router as delivered and setup is not optimum for internet quality of service. Instead it was probably out of the box optimized for HDTV and telephone to satisfy most customers and reduce support overhead.   The average FIOS consumer is multimedia sensitive, but that is not so in my genre of internet consumer.   Here in lies the core of my reason for seeking help from like minded and experienced users in this community.
One of the main driving forces in my switching to FIOS was to improve my multiplayer gaming experience where ultra low ping latency and high upload data rates dramatically affect the quality of connection and thus gameplay.    The cable internet service from TimeWarner was providing solid 2MB/1MB down/up data rates with no issues like what Im having now with FIOS.   Again the reason for the switch was both financial and in hope of gaining better data rates and quality of service.   Now with FIOS Im getting about 24/15 down/up data rate on the Extreme FIOS 25/25 plan when measured from my house to Los Angeles server (50 miles away) via Speedtest.net or DslReports.com/tests.     Latency wise, the ping has gone down from 150 to 50ms when measured to my friends who I connect to online that are on the East coast.   The data rate and latency has greatly improved in going from Cable to FIOS.   So far, so good.
Where the problem shows up now, is that now I get an internet "hiccup" every 5-10 minutes that lasts about 1/2 to 2 seconds.   For the average internet user that just streams multimedia or cruises on the net; this is probably undetectable or noticed.   I never had this problem over the same PCs connected wirelessly to my DLINK DGL-4500 Gaming Router when my ISP was TimeWarner's cable service.    Now, using the FIOS and MI-424WR router with everythings being the same; Im experiencing this degregation in quality of service.    Even putting the PC's IP into the DMZ doesnt make any difference, so it is not related to port forwarding.    The issue is squarely in the lap of FIOS and this router as delivered and configured.    This is where the "game" is a foot, and where I need expertise in an area Im new to.
I am not new to being hands on with inet trouble shooting asI have been setting up my own home network (I work from home over VPN to work) for decades; I would like to leverage the skills of those who are experts in the area that I think can address this issue.   That being QoS and the other device class mechanisms of this router.   Its my guess that this periodic hiccup can be minimized and even eliminated using these advanced features of this all-in-one TV/iNet/Tele router.
With that context being laid down, this hiccup doesnt show up if:
a. I connect two PCs connected to the same ethernet hub of the MI-424WR (traffic just over the LAN and not WAN)
b. When I was on Cable with my own gaming router wirelessly DHCP connected to my PC and using port forwarding or using the DMZ.
The hiccup does exist when:
a.  Going from internet through the MI-424WR to the wireless DHCP connected PC with port forwarding
b. Even putting the wireless DHCP connected PC into the MI-424WR's DMZ has no effect
I did read the manual and tried some QoS pritority and shaping and managed to reduce how often the hiccup occured, but I was just making guesses at the settings.   I put in the IP for the PCs I use for my gaming applications (which are very ping and jitter sensitive) into the QoS priority (value 7) and shaping GUI.    Im hoping someone with experience can tell me exactly how to use it and what settings to input.   Im not clear on the device and connection types offered in the QoS menus.
Another thing, is I couldnt find settings for the turning on/off the ICMP echo.   But I assume this is on because it can be pinged by folks on the net to my WAN IP.
Here is the manual for the Verizon provided M424WR router (Current Version of firmware: 20.10.7)
download link
Here are the QoS traffic priority and shaping values Ive been experimenting with:
Click to view QoS Traffic Priority
Click to view QoS Traffic Shaping
And why it matters to have a solid and stable inet connection for internet gaming? The hiccup causes slewing or jitter which equates to positional errors in the 3D world that ruins the smooth gameplay that is needed for high end gaming.
Heres a snapshot of me flying the wing of another flight simmer who is on the East coast and me on the West coast.
Click to view
Thank you in advance.
Thomas "AV8R"
MSEE

TMAS wrote:
the router as delivered and setup is not optimum for internet quality of service. Instead it was probably out of the box optimized for HDTV and telephone to satisfy most customers and reduce support overhead.
That's not accurate. VZ telephone service does not go through the Actiontec. Also, there are no default settings for QOS in the Actiontec since QOS is rarely needed with FIOS upload speeds.
TMAS wrote:I get an internet "hiccup" every 5-10 minutes that lasts about 1/2 to 2 seconds.
   You should not be experiencing periodic "hiccups". Something is clearly amiss.
TMAS wrote:
With that context being laid down, this hiccup doesnt show up if:a. I connect two PCs connected to the same ethernet hub of the MI-424WR (traffic just over the LAN and not WAN)
The hiccup does exist when:
a.  Going from internet through the MI-424WR to the wireless DHCP connected PC with port forwarding
b. Even putting the wireless DHCP connected PC into the MI-424WR's DMZ has no effect
Lets see. The issue shows up on a wireless connection, but not a wired connection. You think this is a QOS issue and not a wireless issue why? Have you tried changing the wireless channel? It very possible you have neighbors on the same channel. Is the DGL-4500 wireless still on? Could that be interfering?TMAS wrote:
Another thing, is I couldnt find settings for the turning on/off the ICMP echo.
The settting to enable/disable ICMP echo is on the Firewall/Remote Administration page.
TMAS wrote:
Here are the QoS traffic priority and shaping values Ive been experimenting with:Click to view QoS Traffic Priority
Click to view QoS Traffic Shaping
The traffic proirity settings you linked are applied only to your wireless connections. QOS between the router and your wireless PC will only serve to prioritize traffic between the router and that PC and have no affect on your internet traffic. Assuming you are not running browsers, VOIP and other traffic from that PC while you're gaming, then that will not accomplish anything. i.e. You're giving your only traffic highest priority, but that traffic is not competing with anything (except other nearby wireless connections on the same channel).
On the traffic shaping screenshot, you have broadband ethernet checked, but according to your other thread, your WAN connection is Broadband Coax, not Broadband ethernet.

Packet filtering and traffic shaping during peak h...

I play the online game World of Tanks and an currently exteriancing severe lagg and disconnects, the problem does not appear to be with the game/service provider but with BT, i need to know does BT use "packet filtering" and "traffic shaping" during peak hours and if so why has it suddenly started.
This game use's P2P to keep the latency down for players so have been advised to contact BT and ask them are they limiting these types of connections.
Most games do not use these types of connections, but World of Tanks one does and again,been told BT just don't like them, due to the amount of connections they attempt to forge in order to have a stable latency.
I need to know if this is going to continue as pay to play the game, therefore would have to consider changing my ISP to virgin who dont use "packet filtering" and "traffic shaping" during peak hours .
Quick advice would be appreciated.

It's absolutely horrible. i turned off wifi all other devices and every other open program just to reduce my latency for 120ms to 80ms.
Still suffer from huge packet loss.
It would be absolutely horrible if they have started throttling worldoftanks.eu servers. Phone support is no help all they torld me to do is restart my router
I hope this is fixed soon. There are many posts on the WoT eu official forums and everyone that is effected appears to be a BT customer.
Some have mentioned it could be the damaged undersea cable.
I don't have any problems with torrents being throttled or anything like that. only worldoftanks.eu being throttled.

Traffic Shaping and Priortization in ASA

Hi Everyone,
I read that traffic prioritixation is always applied outbound direction when traffic is trying to leave the ASA.
Also i read that traffic Shaping can be applied to all outgoing traffic on a interface.
need to know if traffic shaping and priortization means same thing in ASA ?
There direction is always outbound?
Regards
MAhesh

Hello Mahesh,
Not sure I get it but let me see if I can help,
Priority traffic: Basically allows you to split the interface into 2 different queues, one for low latency traffic and the other for best effor traffic. The one being on the Priority queue will always get served first.
Traffic Shapping:It's the buffering QoS techique that allows you to configure a limit of bandwith that you will provide to a certain traffic class, when you reach that limit the traffic that goes over the limit will be placed into a software queue, where it will be "holded". That's the different between traffic shapping and policing as whit traffic policing you will drop the offending traffic, with shapping you will hold it (so this is not good for Low latency traffic).
Now regarding the direction Traffic shapping can only be done on the outbound direction as queuing is an outbound process.
For Networking Posts check my blog at http://www.laguiadelnetworking.com/category/english/
Cheers,
Julio Carvajal Segura

QoS:: Traffic Shaping query

Hi,
I want to apply QoS:: Traffic shaping with CBWFQ to our enterprise network, i want to ask you that where i should apply classification and QoS policy i mean to which interface. We have a Central site router 3660 and branch sites connected either to F.R E1 or TDM E1. I tried to create class maps and policy maps at the central site router and apply the desired policy to the desired branch site at the subinterface at the main router but CBWFQ is NOT supported at the subinterfaces, Should I apply policy maps at each branch site router or where ???
plz. HELP

Its always better that the classification be done at the access sites in your case. QOS policies can be applied on any interface. I think they can be applied to sub interface aswell . Please refer to the configuration documents on Frame-Relay to learn how to apply QOS on Frame-relay interfaces.

Gigabit EtherSwitch 10/100/1000BASE-TX autosensing EHWIC Traffic Marking and Shaping

Hi all,
i need to know an information about this module.
Gigabit EtherSwitch 10/100/1000BASE-TX autosensing EHWIC
I found on docs that it supports the SWDRR mechanism for queueing, but does it support also
traffic shaping and marking ?
i cannot find this info and i'd be thankful if someone knows it or can point me where this info is.
Thanks a lot
smaikol

ok, at least Jack is doing better now. Don't know why, I just play around with limits.conf, /etc/pam.d/su and deleted the content of /dev/shm directory.
Now the settings are the same as before, but I'm getting far less xruns and luckily without these disturbing plopps.
Last edited by redbit (2009-01-07 15:52:36)

MORX and GSUB shaping in HTML

Question: There is talk of supporting implementations of the intelligent composition model in HTML. Opera is talking of supporting some optional GSUB shaping tags and Safari supports the obligatory CMAP shaping tag so the audience will see the stylistics the author sees. OS X 10.5 Server, and Freeway as well, seem to be moving into this direction. Does anyone have comment or criticism of what at first sight seems to be the beginnings of a technical trend?
Issue: The intelligent composition model was iniated at WWDC 1989 and introduced at Seybold in September 1989 as TrueType. The idea is to separate processing of semantic character information from processing of stylistic glyph information in order to shield the public character set from insertion of incorrect public character information which is the consequence of one-to-one mapping models.
Hitherto, only page description models have supported the optional shaping tables in the SFNT Spline Font file format architecture, but the reality is that this does not work well. The Apple Portable Digital Document format supported the glyph stream but not the character stream and the Adobe Portable Document Format does not support the character stream when PS/EPS is intermediary.
Page markup models have had no support for preserving fixed appearance, not even the fixed appearance defined by the obligatory CMAP shaping. CMAP shaping is sufficient for informal Latin typography, but it is neither sufficient for formal Latin typography nor for informal and formal Arabic and Indic typography.
In other words, if page markup models support not only the character stream but the shaping that is necessary for formal Latin and informal non-Latin typography, the problems posed by page description models would be overcome. There are also other problems that would be overcome, since ISO-IEC 10646 is not problem-free in and of itself.
ISO-IEC 10646 supports private character information on Level 1, Level 2 and Level 3. ISO-IEC 10646 also supports private permutations of public characters (known in ISO 15076 as 'pre-evaluated transforms'). These private permutations have no public synonyms for searching and they appear to the audience as generative algorithmic graphemes.
Ideally, the point of coding text is to match the meaning and the point of composing type is to match the mark. ISO-IEC 10646 permits authors to mix these modes and attempt to hardcode appearance into the plain text. In this case the plain text is unsearchable, a problem which providing support for shaping in page markup models would also solve.
If page markup models evolve to support shaping, then there is no reason to try to hardcode shaping into plain text, and the risk of private information in publishing is reduced.
Best wishes,
Henrik Holmegaard
technical writer, mag.scient.soc.
References:
http://www.mactech.com/articles/mactech/Vol.05/05.10/Typography/index.html
http://unicode.org/mail-arch/unicode-ml/y2008-m02/0043.html
http://www.mail-archive.com/[email protected]/msg12126.html

OK, everybody publishes in ISO-IEC 8859-1:1987 for the Anglo-American world and Western Europe as it was before the fall of the Iron Curtain? No Greek, no Cyrillic, not even Slavonic in the Latin script? So, no problem with Private Use Area charactoids and Combining Diacritic charactoids in comprehensive content cataloguing since these two categories are not possible in ISO-IEC 8859-1:1987.
Well, well ... there is a wider world.
Best,
Henrik

Why are on the first web page buttons are shaped and following pages don´t? All Pages are based on the same Masterpage.

Hello,
I´ve a Problem with Muse.
Why are on the first web page buttons are shaped and following pages don´t? All Pages are based on the same Masterpage.
Any ideas?
Stefan

I just republished the site, and it looks fine, energievollfit | über
could you please try to republish the site again, and let me know .

Cisco ASA QoS traffic policing - how to count conform burst

hi,
I have cisco ASA 8.4(5). I will do configuration for QoS traffic policing. Maximum output/input rate will be 850 Mbits/s.
I am not sure if I need to do configuration also for conform burst ? if yes, can I count suitable value for it ? I must admit that I dont understand difference between conform rate and conform burst.
access-list acl_qos_policing_admin extended permit ip any any
class-map class_qos_policing_admin
match access-list acl_qos_policing_admin
policy-map policy_qos_policing_admin
class class_qos_policing_admin
police output 850000000 xxxxxxx
police input 850000000 xxxxxxx
service-policy policy_qos_policing_admin interface
inside_ADM

Hi, I already have done configuration on production firewall. Bandwidth test worked very good for 200Mbps or 300 Mbps. But I got little strange results for bigger rate limits such 600Mbps or 850 Mbps. I could not see any dropped packets. I did test via http://www.speedtest.net. Maybe because
I need to set conform-burst? there is now only default value (If you set bigger conform-rate then you get bigger conform-burst with default value).
Interface inside_EDU:
Service-policy: policy_qos_policing_edu
    Class-map: class_qos_policing_edu
      Output police Interface inside_EDU:
        cir 200000000 bps, bc 6250000 bytes
      Input police Interface inside_EDU:
        cir 200000000 bps, bc 6250000 bytes
Interface inside_EDU:
Service-policy: policy_qos_policing_edu
    Class-map: class_qos_policing_edu
      Output police Interface inside_EDU:
        cir 600000000 bps, bc 18750000 bytes
      Input police Interface inside_EDU:
        cir 600000000 bps, bc 18750000 bytes
Interface inside_ADM:
Service-policy: policy_qos_policing_admin
    Class-map: class_qos_policing_admin
      Output police Interface inside_ADM:
        cir 300000000 bps, bc 9375000 bytes
      Input police Interface inside_ADM:
        cir 300000000 bps, bc 9375000 bytes
Interface inside_ADM:
Service-policy: policy_qos_policing_admin
    Class-map: class_qos_policing_admin
      Output police Interface inside_ADM:
        cir 850000000 bps, bc 26562500 bytes
      Input police Interface inside_ADM:
        cir 850000000 bps, bc 26562500 bytes

QoS traffic feature in e4200

how good is the QoS traffic prioritization technology in the e4200. does manage it automily or do i have to do everything by hand

QoS assigns different levels of priority to specific types of network traffic, so it helps to ensure optimal performance for demanding, real-time applications, such as online gaming, VoIP calls, and video streaming.
Follow this link and check what QoS settings you can change manually on your router.

How to use filter vis and peak detectors in compactRio

Hi all,
We are
using compact rio 9002 with IO module 9215. We are accessing a sine
wave(of 1 KHz) input with some DC components in it. We need to filter
out the DC and get the peak value of that sine wave. We have developed
a program to acquire the same. But the problem we are facing is we are
not able to filter out the DC and get the peak values inspite of using
the filter and peak detector VI's. Suggest the reason and the solution.
Regards,
Labview Lovers.

Hi Shivkumar,
If you need to filter out the DC portion of the signal before you acquire the signal you may want to consider implementing AC coupling. Which particular Filter and Peak VIs are you using?
Regards,
Bassett

Fetch and peak detection all channels of PXI-5105 with 4M record... HELP!

Dear collegaues!
Please help me to improve performance my application, see attachment, and sorry for my English.
So, my task is to fetch and peak detection all (eight) channels of PXI-5105 with 4M record and sample rate 4M with loop 1 sec...
Inputs of all my channels are wiring to NaI detectors with 0,5...1 microsec of pulse width (really) and freq from 0 kHz to no more than 40 kHz.
Why I've selected 4M record and 4M sample rate namely? Answer is that I've tested PXI-5105 previously by generator 40 kHz and 0,5 microsec width pulse. It is working fine and peak detection indicate for me 40000 pulses/sec. If I set lower than 4M record and 4M sample rate it is no working. In my honest opinion 4M record and 4M sample rate are very min settings.
In the present time peak detection working only 6 channels... When I've connected to diagram more than 6 "peak detector.vi" - I see the error "...out of memory...".
Please advise me, what is to be done for that is all working fine.
Solved!
Go to Solution.
Attachments:
consumer-producer7.vi ‏44 KB

What you are running into is an out of memory error in LabVIEW. You have enough onboard memory to capture 4M samples per channel on the digitizer. The issue is with fetching and manipulating that data in your LabVIEW application. You will want to step back and take a look at how you are handling your data to understand why that is happening.
1) 4M samples/ch = 4M Samples x 2Bytes/sample/ch = 8M Bytes/ch
2) Expanding to 8 channels creates 64M Bytes of data in the raw binary format
3) You are scaling your data by fetching in a 1D WDT format. This stores each sample in a 32 bit double, expanding the memory to 256M Bytes (in addition to timing information)
4) By splitting up the array of waveforms and branching data it you can easily create copies of this data, and if your consumer loop is not completed with the last data, you may be trying to capture a whole new set, creating yet another copy.
So you can see that while you have 1.5GB of controller memory, when dealing with large arrays of data you can easily eat up that memory. There are several things you can try to make your application more efficient. You could work with an unscaled binary data format, you can wire the array of waveform directly to the peak detect vi (instead of creating 8 copies, you will have a single copy with arrays of output) or you could revisit the record size you have chosen (experimenting with your threshold and width settings might help you to get the results you want with smaller record lengths).
-Jennifer O.

Minimum difference between average and peak bitrage in mpeg2?

is there a technical reason why compressor insists on certain minimum differences between average and peak bitrate when compressing to mpeg2?
when analyzing other footage, i regularly see material where the difference is much smaller than what compressor will allow me to do.
for instance; i'm seeing material that is compressed at 4.7 average with a peak at 5.2. compressor insists on setting the peak at 5.5 when the average is 4.7 ...

Well, compression theory says that, ideally, the max bit rate would be double the average bit rate. But since since life often gets in the way of theoretical perfection, Compressor 2 imposes a minimum 1 Mbps difference. This is partially touched upon in the DVDSP 4 manual. From page 64:
Since the VBR methods are most effective when the maximum bit rate is about double the basic bit rate, or at least 1 to 3 Mbps higher than the basic bit rate, the Max Bit Rate setting is forced to be higher than the Bit Rate setting.
Now, while Compressor 2 is coded for a 1 Mbps difference, it doesn't always follow that, in my experience. There are instances when, footage permitting, Compressor uses average bit rates lower than specified as well as never hitting the max bit rate that you've set (but it really does depend on the footage).

QoS Traffic shaping and peak shaping

Similar Messages

Maybe you are looking for