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VTPv3 Sim

October 11th, 2018 in Lab Sim Go to comments

You have been asked to install and configure a new switch in a customer network. Use the console access to the existing and new switches to configure and verify correct device configuration.

VTP_Topology.jpg

Question 1

Explanation

To comply with the configuration of other switches, we need to get VTP configuration of Sw1 or Sw2. On Sw1 use the “show vtp status” command:

Sw1_show_vtp_status.jpg

From this output we learn on Sw1:
+ VTP is running version 3
+ VTP Domain is “CCNP”
+ Sw1 is the VTP Primary Server (we will explain about Primary Server later. Now just understand it is in VTP Server mode)

So on the New_Switch, the VTP Domain must match. New_Switch should run VTP version 3 if if can (but it is not a must as VTP version 2 is compatible with VTP version 3). The New_Switch is connecting to hosts so it is in Access Layer so it should be configured as a VTP Client (although Transparent mode is acceptable) so there are only two suitable choices D & E.

From the exhibit, the New_Switch is connecting to a host in VLAN 100 so its E0/0 interface should be in VLAN 100 -> only D is correct.

Question 2

Explanation

On Sw1 & Sw2 we can check with the “show interfaces trunk” command:

Sw1_show_interfaces_trunk.jpg

Sw2_show_interfaces_trunk.jpg

Sw1 & Sw2 are connected through E2/3 & E2/3 so we can see the native Vlan on these trunks are 99. We should check both Sw1 & Sw2 to see if the Native Vlan on both sides match.

Question 3

Explanation

Use the “show vtp status” on SW1 and SW2 we notice both of them are in “Server” mode so we should choose: A. Configure VLAN 500 & VLAN 600 on both SW1 & SW2.

In practical we only need to create VLANs on one of the “Server” switch and these VLANs will be propagated automatically to others “Server” and “Client” switch. But maybe it is not the answer Cisco wants (as it makes both answers B & C are correct).

Question 4

Explanation

To configure private VLAN we have to change VTP (even version 3) to Transparent mode. In fact, to disable VTP pruning on Sw4 (in Client mode) we also have to change to VTP Transparent mode so answer C can be understood as “change SW4 to Transparent mode” so it is the best choice.

Note: Unlike VTP version 1 and 2 in which VTP pruning is enabled on VTP Server only, VTP version 3 requires VTP pruning must be enabled on all the switches in the VTP domain so we can also disable VTP pruning on each switch separately. Here is the link for your reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12-2_55_se/configuration/guide/3750xscg/swvtp.html

“With VTP versions 1 and 2, when you enable pruning on the VTP server, it is enabled for the entire VTP domain. In VTP version 3, you must manually enable pruning on each switch in the domain.”

Comments
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  1. metodijus
    September 22nd, 2019

    Here are some of the new additions to VTP version 3:

    VTP primary server: only the primary server is able to create / modify / delete VLANs. This is a great change as you can no longer “accidently” wipe all VLANs like you could with VTP version 1 or 2.

    With VTP version 3, only a specific device in a domain, a primary server, is allowed to update other devices. This new feature reduces the risk of unintended automatic configuration changes, for example, by adding a configured switch with a high configuration revision number to an existing network. The concept of a primary server is discussed in the VTP version 3 operation section.

    In addition, only one server per domain can be prompted to be a primary server.

    client and secondary server devices receive a configuration from a primary server.

    In VTP version 3 only the primary server is able to update the domain and the new secondary server. The new switch will receive the configuration from the network and adjust its configuration revision number to 42.

    https://networklessons.com/switching/vtp-version-3

    https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/solution_guide_c78_508010.html

    If you take a looked this , means that Q3 answer here is not correct , correct answer would be :

    B. Configure VLAN 500 and VLAN 600 on SW1 only

    Please elaborate on this as i think at least according to cisco website and according to network-lessons Rene Molenaar website ONLY Primary server in VTP 3 version can update other switches and propagate new vlans

  2. metodijus
    September 22nd, 2019

    Hello Guys

    I need debate and if certprepare can get involved to discuss on this if i am not right to tell me why .

    Q3 here the answer is not correct on cisco site and all professional websites that i know it is clearly saying that to add new vlans or any other configuration change MUST BE DONE FROM PRIMARY VTP SERVER .

    Saying this answer is :

    B. Configure VLAN 500 and VLAN 600 on SW1 only

    Certprepare PLEASE elaborate on this I really need correct answer , every question is important when you go to take the test and it can mean difference between pass and fail.
    After all for what I am paying premium account , please support with this !

    Regards !

  3. metodijus
    September 22nd, 2019

    Q3 !!

    I did research regarding this question and the answer is correct.

    I was confused as well as primary vtp server is only one that can CREATE vlans we agree on that !

    But the question does not say CREATE VLAN!!!!
    It is saying your “You are adding new VLANs.” meaning vlans are already added (that is done for you ) trough sw1(primary) and you are asked how you will CONFIGURE this so “SW1 as primary root for VLAN 500 and secondary for VLAN 600 and SW2 as primary root for VLAN 600 and secondary for VLAN 500”

    So answer is correct to make one primary for one of the vlans and one primary for the second vlan you will need to configure them on BOTH SW1 and SW2

    Answer is correct !!!

  4. Metodijus
    September 22nd, 2019

    Any comment on this , certpepare , please answer , i really want to know am I right ?
    I am taking the exam in couple of weeks i want to dont crash on this kind of thing , please tell me your opinion!

    Regards !

  5. KyleGass
    September 26th, 2019

    You are adding new VLANs: VLAN500 and VLAN600 to the topology in such way that you need to configure SW1 as primary root for VLAN 500 and secondary for VLAN 600 and SW2 as primary root for VLAN 600 and secondary for VLAN 500. Which configuration step is valid?

    NOTE: This question is not referencing the VTP itself. This is asking what you would need to do to configure SW1 to be the root for VLAN500 and individually configure SW2 to be root for VLAN 600. That’s why the answer talks about configuring the VLANs on both switches. If this were a specific VTP questions, then answer B would be correct. However you’re forgetting these need to be configured specifically based on the questions requirements. Hence, you will need to configure on both.

  6. KyleGass
    September 30th, 2019

    who needs updated dumps and training videos can contact me.
    email: cisco4career @ gmail . com

  7. cippalippa
    October 1st, 2019

    Hi Kyleglass: are the new dumps different from the questions here?
    Thank you
    Kind regards

  8. Эдгар Ручей
    October 2nd, 2019

    The 3 SIM topology is the same, but Sim question changed . There are olso somes news MC question. When Digitaltut will update it for Premium guys?

  9. 007
    October 3rd, 2019

    Please Guide..!!!
    i have exam in next couple of week, Kindly just tell me, will i have exhibit pictures of output along with question for this VTPv3 Simulator or i have to access routers to see the output?? Please Answer.. Thanks in Advance.

  10. Anonymous
    October 11th, 2019

    Kyle, I think you are digging too deep into the question. All questions are based on VTP so we should assume any answer will be about VTP as well. This how cisco exams have always worked. The start of the question is the most important part. “You are ADDING new VLANS”. It also says what configuration step is VALID. Which means the question is not conerning all steps required to do the said action, but what step from the given answers is correct. THE FIRST THING YOU NEED TO DO IS GET THE VLANS ON BOTH SWITCHES. The primary server is the only server that can add new vlans. Thus adding the vlan on SW1 is the ONLY answer.

  11. Qalandar
    October 18th, 2019

    Dear All,

    KyleGass is FAKE FAKE FAKE and here just to fool ppl and selling outdated dumps

  12. Murph
    October 18th, 2019

    Hi, Can someone please confirm the correct answer, I can see the both A and B are good candidates, can anyone shed more light please?

  13. EngrHappy
    October 22nd, 2019

    Thanks Certprepare! I successfully passed my 300-115 yesterday. Lab and simlet dumps are valid but there were a lot of unseen multiple choice questions. Drag and drops are same.
    I got 44 questions inclusive of 1 Lab, 2 Simlet (HSRP and MLS with EIGRP) and 2 drag n drop. The rest were MCQ.

  14. Nick
    October 22nd, 2019

    Taking the test later this week. question 3 answer is correct (A) but the explanation is terrible. If the question just asked for create Vlans is just switch one (primary server). But to configure VLans for root and secondary need to configure both switches.

  15. Anonymous
    November 5th, 2019

    Have latest 300-101 Route dumps and wanna get Switch dumps. My email: azekamranabdullayev @ gmail.com , just send me switch dumps and I will send route dumps in response! Thanks!

  16. Bastex
    November 7th, 2019

    Q4. I think correct answer is A: Disable VTP pruning on SW1 only. We know that SW1 and SW2 are in server mode, SW4 – in client mode. SW1 is primary server. We can not create or configure VLANs on switch in client mode at all, but only on primary server. When I attempt create private vlans in my lab on primary server I received: “%Private VLANs can only be configured when VTP is in transparent/off modes in VTP version 1 or 2 and in server/transparent/off modes in VTP version 3 when pruning is turned off”. So we must configure private vlans on SW1 previosly disabling pruning on it.

  17. Anonymous
    November 8th, 2019

    HI,
    I’m a new Premium member and I’m trying to use the VTPv3 simlet. However, I’m encountering problems where I can’t actually get into any of the devices to answer the question.
    Is there something wrong with this particular simlet or am I doing something incorrectly? Can anyone help?

  18. Franky
    November 8th, 2019

    @anonymous
    Try to enable/allow your flash player setting or refresh the website.

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