Home > CEF & Fast Switching

CEF & Fast Switching

September 14th, 2015 in ROUTE 300-101 Go to comments

Question 1

Explanation

The command “show ip cef” is used to display the CEF Forwarding Information Base (FIB) table. There are some entries we want to explain:
+ If the “Next Hop” field of a network prefix is set to receive, the entry represents an IP address on one of the router’s interfaces. In this case, 192.168.201.2 and 192.168.201.31 are IP addresses assigned to interfaces on the local router.
+ If the “Next Hop” field of a network prefix is set to attached, the entry represents a network to which the router is directly attached. In this case the prefix 192.168.201.0/27 is a network directly attached to router R2’s Fa0/0 interface.

But there are some special cases:
+ The all-0s host addresses (for example, 192.168.201.0/32) and the all-1s host addresses (not have in the output above but for example, 192.168.201.255/32) also show as receive entries.
+ 255.255.255.255/32 is the local broadcast address for a subnet
+ 0.0.0.0/32: maybe it is a reserved link-local address
+ 0.0.0.0/0: This is the default route that matching all other addresses (also known as “gateway of last resort”). In this case it points to 192.168.201.1 -> Answer C is correct.

Reference: CCNP Routing and Switching ROUTE 300-101 Official Cert Guide

Question 2

Explanation

The “show adjacency” command is used to display information about the Cisco Express Forwarding adjacency table or the hardware Layer 3-switching adjacency table.

There are two known reasons for an incomplete adjacency:
+ The router cannot use ARP successfully for the next-hop interface.
+ After a clear ip arp or a clear adjacency command, the router marks the adjacency as incomplete. Then it fails to clear the entry.

Note: Two nodes in the network are considered adjacent if they can reach each other using only one hop.

Reference: http://www.cisco.com/c/en/us/support/docs/ip/express-forwarding-cef/17812-cef-incomp.html

Question 3

Explanation

The “show ip cache” command displays the contents of a router’s fast cache. An example of the output of this command is shown below:

show_ip_cache.jpg

Note: If CEF is disabled and fast switching is enabled, the router begins to populate its fast cache.

Question 4

Comments
  1. Dereje
    February 27th, 2015

    I very like this site by the reference links. these links very straight forward/ to the point.
    thanks Digital tut

  2. M. Akmal
    April 12th, 2015

    today passed with 946 marks..
    5 labs and 82 questions dumps are extremely valid.

  3. POUGF
    June 11th, 2015

    There may be one more question worth adding to the database:
    (If it is already included – apologies – just not come across it yet !)

    Which two methods of deployment can you use when implementing NAT64? (Choose two.)
    stateless
    stateful
    manual
    automatic
    static
    functional
    dynamic

    Answer
    Stateless
    Stateful

  4. digitaltut
    July 24th, 2015

    @all: Because of copyrighted issue, we had to remove all the questions and answers. We can only keep the explanations. You can download all the questions and answers at: https://mega.co.nz/#!0pUxSZoJ!s293gEdQu4xLndoA7zZTq5ldia3gdZlrZqNxc_AgpFc
    or
    http://www.4shared.com/office/-GBRNxjKce/ROUTE_July_2015.html

  5. mhkim
    July 27th, 2015

    Need latest CCNP dumps pdf
    Route – Switch – Tshoot
    myungho.kim@sk.com
    Thanks in advance.

  6. TBD
    July 28th, 2015

    !!!! all the question in the exam changed!!!!
    before you go to the exam !!!!WAIT FOR THE NEW DUMPS!!!!

  7. Sahil
    July 28th, 2015

    When can we expect a new dumps!!?

  8. 9tut
    August 7th, 2015

    kd as questoes???

  9. Ilyas
    August 14th, 2015

    need ccnp 300-101 dumps pls lovin.loverboy@mail.com

  10. brix
    August 17th, 2015

    why is that there are no questions??

  11. Ricky
    September 14th, 2015

    I have exam on 16th September. I need new ccnp 300-101 dumps, can anyone send me please puma82rm@libero.it

  12. akshima
    September 25th, 2015

    HI,
    passed today 961 in sri lanka
    all qs from 116q. but sume q’s position of answers are different. only 50q labs> eigrp stub,PBR,eigrp&ospf redistribution,ospf evaluation same as digitaltut. may be different ip addess, ospd process id, eigrp as no,
    In my redistribition sim @R3 # redistribute ospf 1 metric 100000 10 255 1 1500
    ospf evaluation 100% same as digitaltut.
    still valid 116q & digitaltut
    tanks all.

  13. Sabinay
    September 27th, 2015

    @ Digitaltut, the two links ” https://mega.co.nz/#!0pUxSZoJ!s293gEdQu4xLndoA7zZTq5ldia3gdZlrZqNxc_AgpFc
    or
    http://www.4shared.com/office/-GBRNxjKce/ROUTE_July_2015.html” doesn’t contain all question of Ip services, BGP and gre tunnel,can u update ur pdf please.

  14. billigus
    October 24th, 2015

    please send latest route/switch/tshoot dumps to dayvan.cowboy@live.com

  15. Taimur
    November 21st, 2015

    where are questions?

  16. Anon
    November 28th, 2015

    Hello

    Is it just me, or are all the questions not available to view?

    Thanks

  17. Anonymous
    November 29th, 2015

    thanks

  18. hola
    December 3rd, 2015

    a few entries above
    message by tut:
    @all: Because of copyrighted issue, we had to remove all the questions and answers. We can only keep the explanations. You can download all the questions and answers at: https://mega.co.nz/#!0pUxSZoJ!s293gEdQu4xLndoA7zZTq5ldia3gdZlrZqNxc_AgpFc
    or
    http://www.4shared.com/office/-GBRNxjKce/ROUTE_July_2015.html

  19. DJK
    December 8th, 2015

    Why are the questions blank?

  20. dsmooth23
    December 21st, 2015

    Are the questions and sims still valid? Have exam tomorrow.

  21. okannnn
    December 21st, 2015

    @dsmooth23 i read that it is not valid anymore :(

  22. siddhesh
    December 28th, 2015

    please update Latest Dumps Pdf

  23. amer
    December 28th, 2015

    If anyone have Latest Dumps of CCNP Route kindly send it to me {email not allowed}

  24. men
    December 29th, 2015

    Where are the new dumps coming out for the new test? the july 2015 one is no longer valid

  25. vic
    January 14th, 2016

    yes..it is…You need to understand the concept first: go to this pace: goo.gl/vroZC5

  26. route
    January 21st, 2016

    @vic How You download from this site google/vroZC5
    it is not visible or accessible I do not know
    how you go through? can you help me

  27. Anonymous
    January 22nd, 2016

    If Anyone have Latest Dumps of CCNP Route/Switch/TS mail me on {email not allowed}
    I’d be very Grateful to you.

  28. ness
    January 22nd, 2016

    If Anyone have Latest Dumps of CCNP Route/Switch/TS mail me on {email not allowed}
    I’d be very Grateful to you.

  29. bloodstar
    January 28th, 2016

    And me Damps pls O:) {email not allowed}

  30. wally
    February 5th, 2016

    The latest dumps are in the latest links in these tutorials. Read and comprehend thoroughly CEF, VRF, VPN (PPPoE,GRE etc). Lots of questions on the latest stuff.

  31. Anonymous
    February 17th, 2016

    Can someone please send me latest 300-101(ROUTE) dumps

  32. Philip
    February 17th, 2016

    Can someone please send me latest 300-101(ROUTE) dumps- {email not allowed}

  33. ルイヴィトン 2015新作 M48813 実用性とファッション性を持ち合わせたアイテム。丸みを帯びたハンドルと正面のプリーツデザインは可愛らしく、モノグラム・コーティングのキャンバス素材
    February 28th, 2016

    ルイヴィトン 2015新作 M48813 実用性とファッション性を持ち合わせたアイテム。丸みを帯びたハンドルと正面のプリーツデザインは可愛らしく、モノグラム・コーティングのキャンバス素材を使用した「チュレンPM」は、女性の上品さを演出してくれるでしょう。 http://www.wtobrand.com/miumiu-wallet1.htm

  34. Joe
    March 3rd, 2016

    Correction to explanation of Q1: you have “In this case, 192.168.201.2 and 192.168.201.31 are IP addresses assigned to interfaces on the local router.” and “the all-1s host addresses (not have in the output above but for example, 192.168.201.255/32)”

    The All-ones address is 192.168.201.31/32, since the subnet is 102.168.201.0/27

  35. Anonymous
    March 14th, 2016

    Q3: Why is it not CEF?

  36. Jane
    March 14th, 2016

    Hi guys, please email me the 149q and 150q to prepare this exam. Please Please . My email address is jane_woken52 @ yahoo.com . It will be big help.

  37. Bahamut
    March 20th, 2016

    Hello all.
    i have the lastest dumps from this exam from actualtest 149Q. send me an email and we will talk
    send your queries to my address queso b a m a c @g m a i l.c o m without spaces. :)

  38. Flor
    March 31st, 2016

    Please guys, send new dumps at florcastilloechevarria @ g m a I l .com :) I need to be very sure. PLEASE

  39. Anonymous
    May 7th, 2016

    I have the dumbs 149 questions and Q /A of Digitaltut, if you want it ,send me request then I will reply to you .this is my GMAIL ACOUNT amiin7666 @gmail . com

  40. person
    May 9th, 2016

    Hello,
    How vaild is the ccnp route ???
    How big is the dump ?

  41. Fausto
    May 12th, 2016

    Passed Last week Dump 100% Valid! Keep Studying You Can!

  42. Anonymous
    May 18th, 2016

    please send me the latest dump riverhillvilla @ gmail . com

  43. Anonymous
    May 18th, 2016

    @Anonynous Q3 is fast switching because there are entries in the cache. If it were CEF, those entries would be in the FIB (Forwarding Information Base)

  44. Mary
    May 28th, 2016

    Hello all,
    If you are looking for premium dumps, send an email @ premiumdumps@zoho(dot)com whit the exam code.
    Cheers

  45. Tran
    May 29th, 2016

    Passed, 149Q Dump still valid

    If you are looking for premium dumps, I used itlibraries ones for CCNA. Looks like a new vendor but their prices are insanely smaller compared to the normal ones from normal vendors like lea2pass, pass4sure and so on. They have VCE and PDF and for my CCNA Exam they were 100% valid, considering I paid 13 Euros I was very happy.

    They don’t have that many exams but if they have yours I recommend using it since you save a lot of money.

    PS if anyone needs dumps for the CCNA 200-120 leave your email below

  46. Marek
    May 30th, 2016

    You can get premium questions and answer from here https://twitter.com/premiumdumps1/status/737391667360206849 its the 149Q dump , passed last week with it

  47. Anonymous
    June 15th, 2016

    Hello All,

    Can sameone tell me if the 149q and ROUTE_Apr_2016 are the same questions?

    Thanks…

  48. unix
    July 11th, 2016

    My exam is in few days. Please help with latest dumps both vce and pdf. Please. Ayobami.edun() yahoo.com

  49. cls
    August 14th, 2016

    How does an IOS process a packet that should be switched by CEF without a FIB entry?

    A.By forwarding the packet
    B.By dropping the packet
    C. By creating a new FIB entry
    D.By looking in the routing table for an alternate FIB entry

    Why is the answer not D?

  50. Dha_r34
    August 24th, 2016

    where can I find the questions

  51. aakash
    August 31st, 2016

    where is the question

  52. Fatd
    September 1st, 2016

    CLs
    The answer is not D b/c the fiber table contains a mirror image of the routing table, hence there is no entry in the routing table.

  53. Fatd
    September 1st, 2016

    FIB not fiber. Friggin autocorrect.

  54. Devastated
    October 4th, 2016

    I took the ‘300-101: Implementing Cisco IP Routing’ exam today and failed with a 640. Not even 10 of the 49 total questions were from this site. What happened???

  55. Uropa
    October 5th, 2016

    Devastated, did you use the 149q dumps? Am asking as I’ll be taking this test next Friday.

  56. Warning!
    October 5th, 2016

    Uropa, I was checking in the 9tut chat and seem that the test was changing 80%. Yes, 149q dump is not valid. You can see reviews about it in the chat inside URPF

  57. Uropa
    October 5th, 2016

    Warning! Thank for that mate

  58. Uropa
    October 5th, 2016

    @Devastated, can you please verify the dumps a guy called “IQ”on the OSPF Evaluation Sim page has since you recently sat for the exam

  59. Devastated
    October 5th, 2016

    Yes I used the 149q dump. It is no longer valid. Let me check the IQ’s dump & get back to you

  60. Devastated
    October 5th, 2016

    Uropa,
    I reached out to IQ, thank you…

  61. Dumpypy
    October 6th, 2016

    149q are no longer valid.

  62. Dumpypy
    October 6th, 2016

    the dumps have changed since 3rd october as confirmed. the new dumps haven’t been released as of yet since its just new.

    took today and got 709. got 7q valid from the 149q dump.

  63. Anonymous
    October 7th, 2016

    Also take the exam today and failed. Need to study more and dont rely on dumps

  64. Anasttom
    October 7th, 2016

    How long does it takes to the new dump release usually?

  65. tagwa ali
    October 10th, 2016

    any one want new dump 183q
    send to me in
    tagwatagelsir88 @ gmail . com

  66. pau
    October 18th, 2016

    pau_reyn @ yahoo.com…. hi guys, anyone can you share your latest dumps. what i have is 149q and not sure if this is still good material as reference

  67. lltt
    October 22nd, 2016

    @pau 149q isn’t very reliable. Only about 10 questions from them.

  68. Melisa
    November 14th, 2016

    Everything you require to get ready and quickly pass the tough CCDP Cisco Certified Design Professional 300-101exam with 100% pass guarantee in first attempt. http://www.grades4sure.com/300-101-exam-questions.html

  69. Smith
    November 17th, 2016

    I passed the exam tomorrow with 87%. This dumps http://www.testmayor.com/300-101-test.html is valid and all my questions are from this. Need to notice that there is slight change of the answer orders, so be awarded. Read the book and then use these dumps as an aid. Good luck to you all.

  70. Anonymous
    December 12th, 2016

    please share – teds2sscamaro at gmail dot com

  71. Fenton
    December 21st, 2016

    Buy 300-101 Exam Questions & Practice Tests by https://www.vcetests.com. 100% Money back guarantee.

  72. Dinesh
    December 26th, 2016
  73. Anonymous
    February 1st, 2017

    Is the 183q worth looking at, or stick to TAGWA and 149q????

  74. Anonymous
    February 1st, 2017

    Hi All,

    Can anyone help me with 183q dumps vinothayyavu @ gmail . com

  75. Jane woken
    February 2nd, 2017

    can somebody tell me please that what is the last question of 40Q of TAGWA , in my life there is no answer of question “Meaning of priority 0 configured in ospf router?” .

  76. Jane woken
    February 2nd, 2017

    can somebody tell me please that what is the last question of 40Q of TAGWA , in my life there is no answer of question “Meaning of priority 0 configured in ospf router?” . Plus what it the correct answer for the following questions?
    Question 2
    Refer to the following configuration command.
    router(config)# ip nat inside source static tcp 172.16.10.8 8080 172.16.10.8 80
    Which statement about the command is true?
    A. Any packet that is received in the inside interface with a source IP port address of
    172.16.10.8:80 is translated to 172.16.10.8:8080.
    B. Any packet that is received in the inside interface with a source IP port address of
    172.16.10.8:8080 is translated to 172.16.10.8:80.
    C. The router accepts only a TCP connection from port 8080 and port 80 on IP address
    172.16.10.8.
    D. Any packet that is received in the inside interface with a source IP address of 172.16.10.8
    is redirected to port 8080 or port 80.
    Answer:?

    and

    Question 28
    A network engineer wants to ensure an optimal end-to-end delay bandwidth product. The delay is
    less than 64 KB. Which TCP feature ensures steady state throughput?
    A. Window scaling
    B. Network buffers
    C. Round-trip timers
    D. TCP acknowledgments
    Answer:?

    some people said the answer are wrong of TAGWA file. Please help

  77. Anonym
    February 2nd, 2017

    Question 2
    Answer: B.

    http://www.cisco.com/image/gif/paws/13772/12.pdf

    ip nat inside source static tcp 172.16.10.8 8080 172.16.10.8 80
    !−−− Static NAT command that states any packet received in the inside
    !−−− interface with a source IP address of 172.16.10.8:8080 is
    !−−− translated to 172.16.10.8:80.

  78. Jane woken
    February 2nd, 2017

    Thanks and what will the answer of these following questions. Please

    Question 28
    A network engineer wants to ensure an optimal end-to-end delay bandwidth product. The delay is
    less than 64 KB. Which TCP feature ensures steady state throughput?
    A. Window scaling
    B. Network buffers
    C. Round-trip timers
    D. TCP acknowledgments
    Answer:?

    and

    what is the last question of 40Q of TAGWA file , in my file there is no answer of question “Meaning of priority 0 configured in ospf router?”

  79. Willie Seurer
    February 9th, 2017

    Some really good blog posts on this web site, regards for contribution. “When he has ceased to hear the many, he may discern the One – the inner sound which kills the outer.” by H Hahn Blavatsky.

    http://www.ZuqRgWtWvY.com/ZuqRgWtWvY

  80. ASK
    February 16th, 2017

    To Jane:

    Meaning of priority 0 configured in ospf router.

    Router won’t participate/cosnider for OSPF DR/BDR election.

  81. ASK
    February 16th, 2017

    Thanks and what will the answer of these following questions. Please
    Question 28
    A network engineer wants to ensure an optimal end-to-end delay bandwidth product. The delay is
    less than 64 KB. Which TCP feature ensures steady state throughput?
    A. Window scaling
    B. Network buffers
    C. Round-trip timers
    D. TCP acknowledgments

    Answer:

    B. Network buffers

  82. Gus
    February 22nd, 2017

    Hi all, I’m taking the exam tomorrow, can anyone pass me the latest dump for the 300-101 please? gusgestal hotmail com . Thanks

  83. Kay
    February 22nd, 2017

    To Gus
    Hi Gus can you tell me the questions after you took exam. my email is htikeaungkyaw14 icloud.com. I also need to study thx

  84. CCNP W
    March 10th, 2017

    What is TAQWA please, is there any website that I can get it from?

  85. Anonymous
    March 11th, 2017

    @Jane woken

    “question “Meaning of priority 0 configured in ospf router?” is that the router does not participate in DR election process.

  86. Anonymous
    March 28th, 2017

    please someone email me the newest dump narcisse.aspilaire at gmail thank you in advance, anything that

  1. No trackbacks yet.