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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. Dan21
    February 4th, 2020

    I still don’t know answers to Q3 and Q4… really confused here

  2. Q1 No intervlan routing?
    February 5th, 2020

    Q1. pc2 is in vlan 200,

    I am trying to have reachability to pc2,

    I am only configuring New_Switch

    so shouldn’t I apply vlan 200 to New_Switch interface E0/0. answer E,

    as stated, VTP V2 V3 are compatible, answer E has the correct VTP Domain Name, but only answer E will place both PC1 and PC2 in the same vlan

    in the show commands there is no inter-vlan routing occurring.

    Or am I missing something?

  3. FeasibilityFreak
    February 6th, 2020

    PC1 must be configured in VLAN100 as shown on the picture. Routing could be done in the Core.

    Regarding Q3 I would ansewer B.

    Q4 I would pick A. (VTP Questions 3, Question 4 says exact the same).

  4. VTPv3
    February 7th, 2020

    Hi,

    I had the exam yesterday. VTPv3 was on the exam.

    SIMs / Questions still valid, dont pay for it additionally.

    Good luck to everyone
    Cheers

  5. Q1 No intervlan routing?
    February 7th, 2020

    FeasabilityFreak-
    Thanks. I guess I was assuming too much- the net-diagram says it is supposed to be in vlan 100 so just make it so. Got it.

  6. Switch
    February 11th, 2020

    @VTPv3
    What is your take on questions 3 and 4? Same as this site says or what was commented by @@@ on 1/20/19
    I answered the following:

    Q1) D
    Q2) B
    Q3) B
    Q4) A

    Scored mid 900’s.

  7. VTPv3
    February 16th, 2020

    @Switch, I answered same as you are. This is only what makes sense for me, so I choose Q3 answer B and Q4 answer A. Not sure if that is correct, in my opinion it is.

  8. FNetL
    February 20th, 2020

    Dears all,
    can somebody share information related the last LAB proposed during last exams. What LAB are in the pool of the last sessions?

  9. Roccosteppo
    February 20th, 2020

    Question 3 is wrong, if SW1 is the VTP Primary Server (VTP v3 enabled and it is the primary) you can add the configuration to SW1 only…
    There are a lot of questions on certprepare site that should be reviewed.
    Sometime you see the same question with different answers.
    I have my exam tomorrow and I’m scared as f**k.

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