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Understanding Cisco Express forwarding 

Sikandar Shaik
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Cisco Express Forwarding (CEF) is advanced, Layer 3 IP switching technology. CEF optimizes network performance and scalability for networks with large and dynamic traffic patterns, such as the Internet, on networks characterized by intensive Web-based applications, or interactive sessions.

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14 окт 2024

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Комментарии : 68   
@bisiadeyiga6353
@bisiadeyiga6353 7 лет назад
Been reading a lot of complicated nonsense online for hours but your video just nailed it. Straight to the point and really simple to grasp. Thanks
@stylz1
@stylz1 7 лет назад
This whole networking technology engineering thing is like building more simple protocols on top of more primitive and more complex protocols, and at the other end this new technology seems like more complicated stuff. Duality of this is astonishing.
@sam3980
@sam3980 9 лет назад
your explanation is great, simple and concise, but please try to talk more slowly, it'll be much better.. thank you very much for your efforts (y)
@SIKANDARshaik
@SIKANDARshaik 9 лет назад
thanks for inputs. i will surely look in to it and ensure that from my next recordings
@cosigi
@cosigi 6 лет назад
Thank you so much!! I reread the same section in my book multiple times but this just cleared it up!!
@madaraekouta8058
@madaraekouta8058 3 года назад
This video is helpfull and very well explained
@SIKANDARshaik
@SIKANDARshaik 10 лет назад
Online access for free CCNAx 200-120 video training online access.. www.udemy.com/newccnax-200-120/?couponCode=ccna200-120 watch video for complete details on how to access and use them Free New CCNAx 200-120 Routing and Switching self paced Video Training ================================================= Free CCNP ROUTE 642-902 Self Paced video Training online accesss Over 24+ hours of content use the links to subscribe for free . www.udemy.com/ccnproute/?couponCode=CCNProute642-902 watch video on how to access CCNP Route Course on udemy.com Free CCNP Route Video Training on udemy.com ======================= Free CCNP Switch 642-813 Self Paced video Training online accesss on udemy.com 12+ hours of high quality content www.udemy.com/ccnpswitch/?couponCode=ccnpswitch1 ============================ ISIS course www.udemy.com/learn-isis-for-ipv4-and-ipv6/?couponCode=sikandar ============================= Free Advance BGP self paced training videos www.udemy.com/mastering-bgp-in-depth-on-cisco-routers/?couponCode=ciscobgpcisco
@BonelessEar
@BonelessEar 9 лет назад
and this is why "debug ip packet" does not show all traffic but only CPU switched one... for CEF traffic is needed "debug ip cef ..."
@firozsahib
@firozsahib 9 лет назад
Thank you sir... Now i understood how cef is working... Thanks lot.
@hikgerguy1234
@hikgerguy1234 4 года назад
For those of you saying he's hard to understand or hard to follow, just use the controls on RU-vid and slow the speed to .75. I admittedly had trouble understanding him at full speed, but at .75 it was no problem.
@Hariprasad-rt3fu
@Hariprasad-rt3fu 9 лет назад
Thank u very much, it was confusing for me after watching this video i got clear idea of cef process
@Slavey
@Slavey 9 лет назад
It's very simple and nice explanation, thank you
@bijubalan7819
@bijubalan7819 10 лет назад
Great Video. But, I think, we need some clarification on Adjacency table. Because, I believe that Adj: Table is something that used for the Layer 2 information that we need in order to forward the packet and it is not at all related to the Routing table. Like something that maintains layer 2 Next hop address. Again thank you so much for the upload :)
@chriscraddock743
@chriscraddock743 10 лет назад
Biju, Yes the Adjacency table is used for the next hop L2 interface information. After the route lookup is performed in the FIB, the router still needs to encapsulate the L3 packet into a frame and it needs the L2 info to accomplish this. The Adjacency table is build from the ARP table that is constructed by the L3 engine. The Adjacency Table is part of the FIB but not directly related to the L3 RT. If no next hop info exists in the Adj table then the packet is punted to the RP for a "CEF Glean" lookup, which means its asking the Control Plane to perform an ARP to find the L2 info. I HTH.
@shaikarshad9670
@shaikarshad9670 8 лет назад
it was lovely and clear understanding teaching... thanks.....
@TuanTranCute
@TuanTranCute 7 лет назад
Thanks for sharing ! Best regards from Vietnam !
@ticossauro
@ticossauro 10 лет назад
Congrats! Thanks for sharing! Best regards from Brazil!
@anandsingh2236
@anandsingh2236 7 лет назад
I like the way of expressing topics.
@keithsmith2272
@keithsmith2272 2 года назад
Good explanation. Easier to understand comparing to CCNP official book.
@AnandNarine
@AnandNarine 8 лет назад
thank you sir. can you do a video on vrf? your speaking is perfect. i understood everything!
@gbhupenmail
@gbhupenmail 10 лет назад
Good one and very simple way .. Thanks
@afzalkhan9868
@afzalkhan9868 7 лет назад
superb.....sir ... ...clearity in explanation. .. baaki sab confuse karte...
@hermanagida6025
@hermanagida6025 7 лет назад
Thanks now i know this and understand much better.
@ashishwali3436
@ashishwali3436 9 лет назад
Great explanation. It was really helpful. Thanks
@suggriv7926
@suggriv7926 4 года назад
Superb sir😍😍😍😍👍🏼👍🏼🔥
@justinwalsh5040
@justinwalsh5040 7 лет назад
excellent thanks very concise
@josebarbosa51
@josebarbosa51 6 лет назад
Dude this was an awesome video. Thanks.
@derricksmith2002
@derricksmith2002 6 лет назад
Great Video, thanks for putting this together. I thought your English was fine.
@RicardoDiaz21129
@RicardoDiaz21129 9 лет назад
Very well explained. Thank you
@davejr.4711
@davejr.4711 8 лет назад
Thank you so much! This video was extremely helpful!
@PB-og9ec
@PB-og9ec 7 лет назад
THANKS SIR FOR SHARING VERY USEFUL VIDEOS. SIR I REQUEST YOU CAN YOU PLEASE SHARE CCIE R & S INTERVIEW QUESTIONS?
@gastongasquet3594
@gastongasquet3594 10 лет назад
great explanation. Thanks a lot.
@Its_me_Abdul
@Its_me_Abdul 7 лет назад
i am not a native english speaker but i understand his speech very easily, maybe the pronunciation is a bit difficult for you guys to understand.
@razore9122
@razore9122 6 лет назад
thnk u it was very helpful
@waseemshahzad4055
@waseemshahzad4055 8 лет назад
very well explained
@ram-tv5701
@ram-tv5701 6 лет назад
Settings>Speed>0.75
@saylimanss2190
@saylimanss2190 6 лет назад
Try the speed of 1.25 ^^
@journeyman138
@journeyman138 7 лет назад
I would have also addressed Per-Destination vs. Per-Packet.
@saipoojitha5206
@saipoojitha5206 8 лет назад
thank u..good explanation
@abhirajput3818
@abhirajput3818 10 лет назад
Its simply Awosmeeee ..
@chawnduback9701
@chawnduback9701 9 лет назад
Some great information, but I found it a little hard to follow.
@SuraskaSanjaya
@SuraskaSanjaya 7 лет назад
thanks nice explain
@nitinahuja2472
@nitinahuja2472 10 лет назад
great explanation
@motiondesign2501
@motiondesign2501 2 года назад
thnsk bro
@sudiptoecebhaduri
@sudiptoecebhaduri 6 лет назад
cef table has next hop info. adjacency tabe has next hop l2 mac address info by that router can reach next hop. explaining cef overview is unclear.
@dinesh-xf8ij
@dinesh-xf8ij 3 года назад
Nicky explained
@globaleducationnetworklear6000
so cute
@arthurwatts1680
@arthurwatts1680 7 лет назад
Even after changing the playback speed to 0.75, you sound like you're hurrying through this. Complex topics, and networking is definitely in that group, require less speed not more. There is absolutely nothing wrong with your English and you clearly know your stuff, but your delivery lets everything down.
@moondoggspicoli1583
@moondoggspicoli1583 9 лет назад
I agree with most of the other comments... VERY hard to understand your speech AND also read your writing... You obviously know what you're talking about, but if you can't communicate effectively then what's the point?
@marcooconnor
@marcooconnor 6 лет назад
Found it easy, and I am Scottish
@delnomad
@delnomad 10 лет назад
Ahmed Ahmed Ahmed Ahmed Mohamed
@cabecitavides
@cabecitavides 8 лет назад
Obviously, you know what you are talking about .... However, i stop listen to it because you are talking too fast, and some words are hard to understand. Hopefully, you can re-record it in a much slower pace. Cheers
@tamoorali9065
@tamoorali9065 4 года назад
must be slow
@evermore7212
@evermore7212 8 лет назад
I'm able to understand about half of what you're saying. You seem to know your stuff but you really need to work on that accent.
@jjenko6366
@jjenko6366 8 лет назад
Your ignorance is unreal. Learn another language and speak it without accent. This guy was amazing in his explanation. only simple minded folk get caught in something as simple as an accent. Thanks to the tutor, I learned a great deal.
@bisiadeyiga6353
@bisiadeyiga6353 7 лет назад
Cant believe there are still people like you. That he can speak your language but you dont understand his language and dont appreciate his accent tells how inteligent the guy is and how lazy you. He's made the effort to learn english; if you are not lazy, you'll make the effort to understand him. No wonder, you could only understand ABOUT half of what he said.
@sergiofaik78
@sergiofaik78 8 лет назад
you should've just do a txt interaction instead of talking... I gave up halfway, take it constructively
@mu1990adse
@mu1990adse 8 лет назад
learn how to speak English before teaching, take it step by step... PLEASE
@madaraekouta8058
@madaraekouta8058 3 года назад
Idiot
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