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VTPv3 Sim

February 11th, 2017 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

In VTP version 3, there are two additional fields under the output of “show vtp status” command. They are:
+ “Primary ID”: The MAC address of the Primary Server
+ “Primary Description”: The hostname of the Primary Server

The Primary Server is used on VTP version 3 to avoid the bad behavior in version 2. In VTP version 2, a VTP client (or Server) can be taken out of the network. When it comes back, it can overwrite a VTP Server if its Revision number is higher. This problem no longer exists in VTP version 3 because there is only one VTP Primary Server at a time. Only a VTP Primary Server can create new VLAN.

After creating new VLAN, the VTP Primary Server will advertise its VLAN database to other VTP clients/servers so in fact answer A is not correct. In this question you just need to check if Sw1 or Sw2 is the VTP Primary Server then we can create both VLAN 500 & 600 on it. Then it will advertise these VLANs to other switches.

Sw1_show_vtp_status_primary_server.jpg

From the output we see Sw1 is the Primary Server so we should configure VLAN 500 & 600 only on this switch.

Note: If the above output shows the roles of Sw1 and Sw2 are “Server” only (not “Primary Server”) then we should choose: A. Configure VLAN 500 & VLAN 600 on both SW1 & SW2

Note: To make a switch a Primary Server, issue the “vtp primary vlan” under privilege exec mode. For example:

Sw1#vtp primary vlan

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. justine
    October 24th, 2017

    any update please, I need latest dumps, thanks

  2. HollyMollyJolly
    October 25th, 2017

    Can anyone please confirm the answers to Q#3 and Q#4 of VTPv3?

  3. Anonymous
    October 26th, 2017

    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?

    How you supposed to set up the vlans only on sw1 ? Because we have to make vlans 500 as primary and vlan 600 secondary on sw1 and then vlan 600 as primary for sw2 and vlan 500 as secondary. wouldn’t be option A the right choice?

  4. slime
    October 31st, 2017

    @anonymous, SW1 is configured as server primary so the change on SW1 will be propagated to all switches in the domain.

  5. Tkasali
    November 1st, 2017

    Took the exam and failed . Please Can anyone please send me the latest dumps of CCNP Switch.
    kasali_temitayo at yahoo dot com

    Thanks
    Tkasali

  6. nick
    November 3rd, 2017

    Anyone have new Passleader 478q they can share hereā€¦

  7. IPHelpeD
    November 5th, 2017

    Hi @certprepare : About VTPv3 Sim Response 3: The question is: “You are adding new VLANs: VLAN500 and VLAN600 to the topology in such way that you need to configure SW1 as primary root for VLAN500 and secondary for VLAN600 and SW2 as primary root for VLAN600 and secondary for VLAN500. Which configuration step is valid?”

    NOTE: A Primary Root and Secondary Root” is an STP concept not a VTP one. So The question is asking where you should create both VLANS and additionally How to set VLAN500 as primary root and VLAN600 as Secondary Root in SW1 and SW2, each one in reverse mode…

    Anyway, the correct response is “B” because the set of responses is not involving the STP part of the response. It involves only the VTP concet about where you should create the VLANS to be propagated through VTP. ANd the correct response is of course “B”.
    B. Configure VLAN 500 and VLAN 600 on SW1 only
    So, the question is correct in my opinion. And they are not talking about VTPv3, oppositely they are asking about VTPv1,2,3 plus STP…. But giving a set of responses only for VTP… Don’t you think so…

  8. IPHelpeD
    November 5th, 2017

    @certprepare On the other hand, if the Question is wrongly talking about primary and secondary root instead of talking about Primary and Secondary SERVER… In the second case you are right they are exclusively talking on VTPv3 only… as mentioned in:

    Configuring a VTP Version 3 Primary Server
    at:
    https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swvtp.html

  9. san2427
    November 14th, 2017

    Please share CCNP switching dump email id: san242721 @ gmail dot com

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