Home > VLAN Troubleshooting Sim

VLAN Troubleshooting Sim

January 27th, 2018 Go to comments

Topology:

VLAN_Troubleshooting_Topology.jpg

We are not sure about the details but here are the faults in this sim:

– Native VLAN mismatch between SW1 & SW3
– Switchport mode mismatch: one in access mode while the other end in trunk mode -> need to change from access to trunk mode
– One port in VLAN 500 while other port in VLAN 600

 

Comments (44) Comments
  1. mallows
    January 27th, 2018

    Thanks 9tut! :)

  2. Donaldo Trumfet
    January 28th, 2018

    Way to go 9tut, thanks a gazillion baby!!! :P

  3. Anonymous
    January 28th, 2018

    where can i see the question 9tut

  4. ice
    January 28th, 2018

    Thank u 9tut. please make sure about GRE multi-link a swell.

    is this just SIM to choose answers or its configuration?

  5. Anonymous
    January 29th, 2018

    THANKS MUCH!

  6. sami
    January 29th, 2018

    Hello All
    Please Please tell me is chines dumps is valid.

  7. @9tut
    January 29th, 2018

    Do you have more information about this Sim ?

  8. @9tut
    January 29th, 2018

    @9tut
    Do you have more information about this Sim ?
    Add a Comment

  9. Bulud
    January 29th, 2018

    Passed today) 943/1000
    80% of multiple questions were from 9tut.
    I got 8 labs. IPv6 ospf , GRE, RIPv2 Troubleshooting, DHCP , EIGRP Troubleshooting, OSPF Neighbor, Access list sim 2(mod 3) , Access list Sim 1.
    GRE, OSPF, Eigrp, RIPv2 , OSPF questions were different, new, but not difficult.
    4-5 Drag and Drop questions. 2 of them were from 9tut, others were new.

    This sim was not in my exam

  10. Daniyal
    January 29th, 2018

    @Bulud ..
    are chines dumps valid???

  11. alexnader
    January 30th, 2018

    @9tut
    Can put the configuration for the question 2and 3, I did the question 3 configuration.

    1- Native VLAN mismatch between SW1 & SW3

    2-Switchport mode mismatch: one in access mode while the other end in trunk mode -> need to change from access to trunk mode.

    -Switch port fastethernet0/1
    -Switchport mode trunk
    -end
    -copy running-config startup-config

    3-One port in VLAN 500 while other port in VLAN 600

  12. anonymous
    February 1st, 2018

    wow, they are getting nasty with the exam, as if we don’t have to remember enough as it is. Thanks 9tut!

  13. Harikrishnan A
    February 2nd, 2018

    how many questions totally in ccna

  14. BMW
    February 3rd, 2018

    Does anyone know why can’t I see the icon for putty on the desktop after a successful installation?
    Or any other hyper terminal program free to download! Please do answer if you know. Many Thanks

  15. Anonymous
    February 5th, 2018

    Can anyone share the link to practice all the CCNA lab sims ?

  16. Anonymous
    February 6th, 2018

    @ice

    It’s a configuration SIM. Got this one a couple weeks back. Prob easiest one on the exam and got it done fast. Answers indicated here are correct. Other labs in the exam are much tougher. Noticed same as Bulud mentioned.

  17. ovi
    February 6th, 2018

    where is the answer?plz anyone answer it plzz…

  18. ice
    February 6th, 2018

    @Anonymous have u saved every step? like when u assign vlans to the correct vlan did u write ..copy runing config to startup config?? is it must?

  19. BMW
    February 8th, 2018

    Putty issue has been resolved EVENTUALLY, Now cant find the DRIVER for RS232 converter usb?
    I have been struggling for the last couple of days with drivers, installed several,but none works anyone please advise: Win10 and Win8
    Thanks

  20. Tacos
    February 8th, 2018

    Hey i need updated dumps and valid labs for practice. Please help me

  21. Mark
    February 8th, 2018

    Please i need valid latest dumps and vlan troubleshooting lab questions with solution

  22. BigJoeCisco
    February 9th, 2018

    Hey guys where can I get this vlan simulation? I’d like to practice this before I go for the exam. Thanks a bunch.

  23. Ahmed
    February 10th, 2018

    Is this this answer for this..????

    1- Configure the access port to divide vlan
    Switch>enable
    Switch#configure terminal
    Switch(config)#Interface fa/b
    Switch(config-if)#Switchport mode access
    Switch(config-if)#Switchport access vlan X
    Switch(config-if)#end

    2- Configure the trunk port
    Switch#configure terminal
    Switch(config)#Interface f c/d
    Switch(config-if)#switchport trunk encapsulation dot1q
    Switch(config-if)#Switchport mode trunk
    Switch(config-if)#end

    3-trunk port configuration vlan
    Switch#configure terminal
    Switch(config)#interface f e/f
    Switch(config-if)#switchport trunk native vlan Y
    Switch(config-if)#end

  24. Anonymous
    February 12th, 2018

    hey guys where do i find the multiple questions for CCNA exam on 9tut am taking exam on feb 27th. thanks.

  25. @9tut- Got this question in exam yesterday. here are the details
    February 15th, 2018

    Q- PLEASE MAKE SURE THAT THE PC AND SERVER ARE ASSIGNED TIO CORRECT VLANS AS SHOWN IN FIGURE. ALSO MAKE SURE THAT PORTS BETWEEN SWITCHES ARE IN TRUNK PORT OTHERWISE CONFIGURE THEM AS TRUNK PORTS AND ENCAPSULATION AS 802.1Q BETQWEEN THEM. ALL OTHER PORTS CONNECTED TO SERVERS AND PC’S SHOULD BE IN ACCESS PORTS AND CONFIGURED TO THE VLAN AS SHOWN.

    SOLUTION- Switch 1 port E0/1 WAS CONNECTED TO A COMPUTER WITH A STRAIGHT THROUGH CABLE AND AS WELL AS ROLLOVER CABLE (FOR CONFIGURATION OF SWITCH PORTS ON THIS SWITCH) WHICH WAS SHOWN IN VLAN 600 IN THE DIAGRAM BUT ACTUALLY THAT PC WAS NOT IN VLAN 600 AFTER CHECKING THE VLAN CONFIGURATION USING SHOW VLAN COMMAND. INSTEAD THIS PORT WAS CONFIGURED IN VLAN 1. SO WE NEEDED TO PUT THAT PC IN VAN 600 USING FOLLOWING COMMANDS-
    SW1(CONFIG)# INTERFACE E0/0
    SW1(CONFIG-IF)#SWITCHPORT MODE ACCESS
    SW1(CONFIG-IF)#SWITCHPORT ACCESS VLAN 600

    NOW THE E0/0-PORT OF THIS SWITCH-SW1 WAS RECEIVING NATIVE VLAN MISMATCH FROM SW3 SWITCH-PORT E0/1. ALSO E0/0 OF SW1 AND E0/1 OF SW3 WERE NOT IN TRUNKING MODE. AND THE QUESTION WAS ASKED TO MAKE SURE THAT CONNECTION BETWEEN BOTH SWITCHES SHOULD BE IN TRUNKING MODE WITH 802.1Q ENCAPSULATION ENABLED
    SO USED THE BELOW COMMANDS-
    SW1(CONFIG)#INT E0/0
    SW1(CONFIG-IF)#SWITCHPORT TRUNK ENCAPSULATION DOT1Q
    SW1(CONFIG-IF)# SWITCHPORT MODE TRUNK.

    ON OTHER SWITCH WHICH IS SWITCH3

    SW3(CONFIG)#INT E0/0
    SW3(CONFIG-IF)#SWITCHPORT TRUNK ENCAPSULATION DOT1Q
    SW3(CONFIG-IF)# SWITCHPORT MODE TRUNK.
    SW3(CONFIG-IF)# SWITCHPORT TRUNK NATIVE VLAN 1

    NOTE- I HAVE USED THE LAST COMMAND SINCE IN SW1 THE NATIVE VLAN WAS SHOWING 1 ONLY. BUT IN SW3 THE NATIVE VLAN WAS IN VLAN 600 SO TO CORRECT THAT USED THE LAST COMMAND. ALSO PLEASE DUNT PANICK BECAUSE AS SOON AS YOU OPEN EITHER OF SW1 AND SW3 OR SW 2 YOU WILL START GETTING NATIVE VLAN MSIMATCHES STRAIGHTAWAY AND YOU WILL SE LOTS OF MESSAGES SO DONT PANIC THAT HOW TO CONFIGURE . JUST FOLLOW THE INSTRUCTIONS IN QUESTIONS. THE REMOVE THIS NATIVE VLANS MISMATCH.

    ALSO PORT E0/2 OF SW3 WAS CONNECTED TO SERVER AND IN VLAN 600 AND PORT E0/3 WAS ASSIGNED TO VLAN 500 AND TO A COMPUTER AGAIN IN VLAN 500 ITSELF. SO THAT COMPUTER HAD A CONSOLE CABLE CONNECTED TO SW3 AS WELL IN ORDER TO CONFIGURE SW3 PORTS AS TRUNK PORTS AND SWITCHPORTS USING THE ABOVE STEPS FOR SW1 WHICH WAS MENTIONED ABOVE.

    SIMILARLY SW2 PORT E0/1 PORT WAS CONNECTED TO E0/4 PORT OF SW3 SO AGAIN TRUNK LINK CONFIGURATIONS BETWEEN E0/1 AND E0/4 PORTS BETWEEN TWO SWITCHES NEED TO EB DONE HERE. BUT YOU NEDD NOT TO AGAIN RUN THAT NATIVE VLAN COMMAND CHANGE ON SW3 OR SW2 SINCE ON SW3 WE AKREADY CHANGED IN ABOVE STEP AND IN SW2 ITS FINE IN VLAN 1 ONLY.

    A COMPUTER WAS CONNECTED TO PORT E0/2 OF SW2 AND WAS IN VLAN 600 AND E0/3 WAS CONNECTED TIO SERVER WHCH WAS IN VLAN 600 AGAIN. ALSO AGAIN THIS TIME THE COMPUTER WAS CONNECTED TO THE SWITCH USING A CONSOLE CABLE ASWELL TO GIVE YOU CONSOLE ACCESS TO CONFIGURE AND VERIFY THE CONFIGURATIONS ON SW2. SO JUST VERIFY THE ACCESS PORTS ARE CORRECTLY ASSIGNED AND TRUNK PORTS AS WELL USING BELOW COMMANDS.

    AFTER DOING CONFIG CHANGES MAKE SURE YOU DO SWITCH#COPY RUNNING-CONFIG STARTUP-CONFIG ON EACH OF THESE SWITCHES AND IN CASE ANY MISTAKE YOU HAVE DONE IN CONFIGURING. AFTER RECTIFYING ALSO RUN THIS COMMAND. CO I KNOW PEOPLE HAVE A HABIT OF FORGETTTING THE THIS THING. THEY WILL JUST DO COPY RUNNING-CONFIG STARTUP-CONFIG ONCE AND THEN AFTER CORRECTING WILL FRGET TO DO THAT SO DONT DO THIS MISTAKE AND LOSE MARKS.

    SWITCH# SHOW INTERFACES TRUNK. CHECK IF THE PORTS BETWEEN SWITCHES ARE SHOWING AS TRUNK PORTS AND TYPE OF ENCAPSULATION AS 802.1 AND TRUNK MODE IS ON AS WELL. CHECK THIS ON EACH SWITCH WHICH IS CONNECTED TO EACH SWITCH.

    VERIFY IF PORTS WHICH BELONG TO RESPECTIVE VLANS AFTER YOU CONFIGURED ARE SHOWING UNDER CORRECT VLANS OR NOT.

    USE COMMAND- SWITCH#SHOW VLAN

    IT WILL SHOW YOU THE LIST OF VLANS AND THE PORTS UNDER EACH VLAN. RUN THIS COMMAND ON ALL 3 SWITCHES AND VERIFY. IF EVERYTHING IS CORRECT THEN GOTO EACH SWITCH AND RUN COPY-RUNNING CONFIG STARTUP-CONFIG IN PRIVILEGE MODE AS IN GLOBAL MODE IF WE APPEND A “”DO”” COMMAND AND TRY TO WRITE THIS AND COPY IT IT WILL NOT WORK SO COPY IS ALLOWED IN PRIVILEGE MODE ONLY. THE TAB KEY WORKS HERE AS WELL TO COMPLETE YOUR LINES OR COMMANDS AND QUESTION MARK WORKS AS WELL TO KNOW AVAILABLE COMMANDS

    ONLY WHILE CONFIGURING ACCESS LISTS THE TAB KEY OR QUESTION AMRK WONT WORK BECAUSE THE ENVIRONMENT WILL NOT BE A CONSOLE WHERE YOU WILL CONFIGURE IT. INSTEAD YOU WILL BE GIVEN 5 BOXES AND IN THAT YOU AHVE TO WRITE THE COMMANDS AND APPLY UNDER INTERFACES EXCATLY LIKE THE ONE GIVEN IN 9TUT.

    ALSO PLEASE REMENBER THAT WHILE DOING TROUBLESHOOTING USING SHOW COMMANDS DON’T CLICK ON NEXT FOR SUB-QUESTIONS. ON THE BOTTOM OF YOUR SCREEN YOU WILL HAVE TABS LIKE – TOPOLOGY. SCENARIO. QUESTIONS. R1, R2 R3 FOR EXAMPLE. CLICKING ON EACH TAB WILL OPEN ONE BY ONE. WHEN DOING QUESTIONS WHEN YOU CLICK ON QUESTIONS YOU WILL GET ALL 4 SUB QUESTIONS HIGHLIGHTED
    AND NUMBERED ONE BELOW THE OTHER. SO WHEN DONE WITH QUESTION ONE CLICK ON NO 2 THEN NO3 THEN NO 4 TO DO NEXT QUESTIONS AND IN BWTEEN YOU CAN TOGGGLE AND SWITCH TO OTHER TABS LIKE TOPOLOGY AND SCENARIOS AS WELL. THE WHEN DONE WITH ALL QUESTIONS THEN ONLY CLICK NEXT ON BOTTOM RIGHT CORNER.

    ALL THE VERY BEST WITH YOUR PREPARATIONS. IF ANY HELP NEEDED OR QUERY NEEDED DO LET ME KNOW.

  26. @ANONYMOUS-
    February 15th, 2018

    PLEASE ERFER MCQ’S FROM 9TUT ONLY. 95 PERCENT QUESTIONS WERE FROM HERE FOR THEORY AND ALL CONFIGURATION LABS AND SIMULATION LABS USING SHOW COMMANDS ARE FROM HERE ONLY WITH VERY MINOR CHANGES LIKE IP ADDRESSES. AND ACCESS LIST BLOCKING AN EIGRP ROUTE IN EIGRP CONFIG. IT WAS EASY TO AMKE OUT. ALSO A SMALL SUGGESTION. WHEN YOU DO TROUBLESHOOTING QUESTIONS USING SHOW COMMANDS DONT CHECK THE WHOLE CONFIG AS A WHOLE AT A TIME. BETTER TO GO WITH OPTIONS GIVEN ONE BY ONE. IT WILL SAVE ALOT OF TIME. INSTEAD OF SPENDING 10-12 MINS YOU CANS OLVE IN JUST 5-6 MINS IF YOU GO BY OPTIONS AND CHECK THE RESPECTIVE CONFIGS USING THE REQUIRED SHOW COMMANDS ON THE DEVICES MENTIONED IN OPTIONS OF THAT QUESTION.

    ALSO MAKE SURE THAT YOU DONT BY HEART ALL QUESTIONS HERE. BECAUSE SOME OF THE QUESTIONS HAVE CORRCET ANSWER IN THEORY EXPLANATION WHILE WHEN YOU USE COMPOSITE UIZZES IR INDIVIDULA QUIZZES THERE ANSWERS HAVE NOT BEEN MODIFED AND ITS WRONG. NOT FOR ALL QUESTIONS BUT FOR FEW QUESTIONS. LIKE A QUESTION WHERE MULTIPLE SECURE CONNECTIONS IS USING DMVPN BUT IN QUIZ IT IS WRITTEN VPN. ALSO FOR DWDM THE THEORY EXPLANATIONS SAYS SDN, SNONET , USED IN SUBMARINE CABLES AND FORLONG DISTNACES WHICH IS RIGHT,. BUT WHILE DOING QUIZZES ITS THE OTHER THRREE OPTIONS ARE MARKED AS RIGHT . SO DONT PANIC AND GET CONFUSED. USE GOOGLE AND LINKS PROVIDED BY 9TUT IN THEORY EXPLANATION BLOW EACH EXPLANATION.

    TRY READING THEORY AND QUESTIONS AT LEAST 3TIMES AND QUIZZES AT LEAST THRICE B4 TAKING THE MAIN EXAM. TRUST ME YOU CAN SOLVE WITHIN 90 MINS INSTEAD OF 120 MINS WHICH IS PROVIDED FOR COUNTRIES WITH NON-ENGLISH AS THE NATIVE LANGUAGE.

  27. @ANONYMOUS-
    February 15th, 2018

    SHOW COMMANDS TROUBLESHOOTING LABS WHICH I GOT WAS- RIPV2 USED IN SIMULATION BY 9TUT. GRE TUNNEL-USED HERE IN SIMULATION BY 9TUT. EIGRP NEIGHBORS FORMING TROUBESHOOTING ( THE ISSUE WAS AN ACCESS LIST BLOCKING THE TARFFIC AND NOT SLLOWING TO FORM EIGRP NEIGHBOR PLUS WRONG AS NUMBER CONFIGURED PLUS NETWORK NOT ADVERTISED PLUS DEFALUT STATIC ROUTE TO ISP MISSING) , AND ANOTHER ACCESS LIST TROUBLESHOOTING FROM HERE ONLY EXACTKY THE SAME GIVEN HERE TOS CHECK WHY THE TELNET FROM SWITCH TO ROUTER IS NOT HAPPENING AND WAHT WILL HAPPEN IF THIS ACCESS LIST IS REPLACED BY THAT. EXACTLY THE SAME. OSPF ADJACENCY FORMATION ISSUE FOR IPV4 EXAMPLE GIVEN HERE. I DINT GET FOR THE IPV6 ISSUE WHERE YOU USE DEFAULT INFORMATION ORIGINATE COMMAND AND DEFINE A STATIC ROUTE. COZ IN CONFIGURING I GOT ACCESS LIST NUMBERED AND VLAN SWITCHES CONFIGURING . BUT MAKE SURE TO PRACTICE THESE SIMS 2 DAYS BEFORE YOUR EXAM AGAIN THAT TOO 4 TIMES. THIS WILL NOT HELP YOU BY HEART THINGS BUT WILL HELP FOR SPEEDY PRESENCE OF MIND ACTIVE AS THE LIST OF OPTIONS WILL BE FAMILIAR AND YOU CAN EASILY MAKE OUT BY SUNNING THE SHOW COMMANDS OPTION WISE AND FASTER BY RELATING THE ISSUE IN EXAM WITH THE ONE YOU PRACTISED HERE AND HENCE SOLUTIONS.

  28. xbr
    February 15th, 2018

    @ANONYMOUS

    so just studying the quizes I might make it?
    im taking the exam next week… i’ve done the labs the GRE lab and quizes over and over,, anything else I can do, i just dont want to overfreak or blocked myself,,

  29. Miplo
    February 15th, 2018

    @xbr
    Cuuent ccna dumps are almost 90% valid. Only 1 new scnerio lab (VLANS) not in dumps.
    But if u have good practice on dumps , you can pass easily

  30. xbr
    February 15th, 2018

    @Miplo

    thank you!~

  31. @XBr
    February 16th, 2018

    @XBr- no study the theiry given here and all the bew questions aa weell coz in theiry and sxplanation of questions abswers given are right. but in few questions under the composite quiz section containing 50 questions in each quizz has few if d abswers wrong and nt has been updated in accordance with the theiry guven here. so to avoid that cnfusion do go tgriugh theory questions uts explanations and then quizzes. and no doubt oractice sims at leaat 3 to 4 times. then it will be realy easy

  32. Prashant
    February 16th, 2018

    pass yesterday with 9xx/1000 .

    one VLAN Lab was there as all of u discussed .but when i trying to change SW1 and SW2 connecting port mode then one error come .

    switch-port is in auto …..cant change the mode .

    rest of the exam is good questions are same as mentioned in 9TUT . some drag and drop are written in different type .

    thanks 9tut . please can u check why mode not change.

  33. @Prashant- Congratulations. Just an FYI bro explanation fr that
    February 17th, 2018

    Thats what i had mentioned above as anonymous that two modes of trunking are ther ISL and Dot1q but type of negotiations are 3- Trunk , auto and on. By default L3 switches are in auto modes so you acnnot change the prot to trunk directly.

    U need to follow the above steps.

    SW(config)# interafce fx/x
    SW(config)# switchport trunk encapsulation dot1q
    SW(config)# switchport mode trunk.

    Fits you nedd to change the negotiation mode from auto to encapsulation dot 1q and then only you can put it as trunk. The same explanation s given on 9tut in case if you missed that exlanation.

    For layer 2 switches there is only one mode which is trunk mode(ON) so you directly go and assign using switchport mode trunk command under that interface and you do not need the change the encapsulation first like you hve to in L3 switches.

  34. @Prashant- Congratulations. Just an FYI bro explanation fr that
    February 17th, 2018

    Try the above just fr practice in packet tracer and GNS3 you will definitely be able to change after that

  35. @Prashant
    February 17th, 2018

    when you took the exam, were they the same questions?

  36. @ccna
    February 18th, 2018

    @9tut

    is it correct on your number 1 solution ?
    your cmd is

    SW1(config)#int E0/0 (this int is for link SW3 )

    but according to you , you are going to change the vlan of the PC (Vlan 1 to Vlan 600)
    the Port we are going to use is E0/1. right ? converging to

    SW1(CONFIG)# INTERFACE E0/1
    SW1(CONFIG-IF)#SWITCHPORT MODE ACCESS
    SW1(CONFIG-IF)#SWITCHPORT ACCESS VLAN 600

    Thanks so much @9tut

  37. @Prashant-
    February 18th, 2018

    i took it on 14th feb. yep the switch configuration which they have asked was same

  38. @ccna
    February 18th, 2018

    Yes it is correct. for access ports you configure to allow access end devices in the vlan in which theyt want. but putting their native vlans between two switches is essential for DTP negotiation. On S1 port e0/0 should be a trunk port so i changed its native vlan to 1. and alos configured it as trunk port using encapsulation dot1q.

    But for access port e0/0 which is connected to a pc it should be configure to communicate via vlan 600. Native vlans and access vlans are two different concepts. Native vlans affect trunk ports not access ports since access ports drop dtp frames while trunk ports negotiate it among them. so configuring trunk ports and the ensuring native vlans are same between them is necessary between two trunk ports.

    By deafult DTP , VTP and CDP travel on VLAN 1 even if you change the native vlan. But since you cant have one switch port in one native
    vlan and other in another native vlan as it will sbhow native vlan mismatch so both should be same

  39. @ccna
    February 18th, 2018

    e0/1 was an access port and e0/0 was trunk port so thats why teh configuration

  40. @ccna
    February 19th, 2018

    thnkyou so!
    just last one, in the trunk link SW3(E0/4) and SW2(E0/1) how will you going to configure it as a trunk ? may i see your cmd? thanks. For smooth clarification .

  41. @Prashant
    February 19th, 2018

    When you took the exam on the 14th? were all the questions you studied on here the same as the exam?

  42. wale
    February 21st, 2018

    hey guys

  43. ZA
    February 22nd, 2018

    Hello 9tut and All,

    Could you please send me the all CCNA lab sim to edp zain @ gmail .com (remove space) as a one file so that it is easy to prepare as I prepared earlier but were not given exam now planning to give by next month..

    please guys appreciate !!

  44. Sayed
    February 23rd, 2018

    thanks 9tut

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