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VTP Configuration Sim

June 25th, 2011 in LabSim Go to comments




Answer and Explanation

If you are not sure about VTP, please read my VTP tutorial

The question states we can’t access the router so we can only get required information from switch building_1. Click on the PC connected with switch building_1 (through a console line) to access switch building_1’s CLI. On this switch use the show running-config command:

building_1#show running-config


Next use the show vtp status command to learn about the vtp domain on this switch

building_1#show vtp status


(Notice: the IP address, IP default-gateway and VTP domain name might be different!!!)

You should write down these 3 parameters carefully.

Configuring the new switch
+ Determine and configure the IP host address of the new switch

The question requires “for the switch host address, you should use the last available IP address on the management subnet”. The building_1 switch’s IP address, which is, belongs to the management subnet.

Increment: 32 (because 224 = 1110 0000)
Network address:
Broadcast address:

->The last available IP address on the management subnet is and it hasn’t been used (notice that the IP address of Fa0/1 interface of the router is also the default gateway address

Also notice that the management IP address of a switch should be configured in Vlan1 interface. After it is configured, we can connect to it via telnet or SSH to manage it.

Switch2#configure terminal
Switch2(config)#interface Vlan1
Switch2(config-if)#ip address
Switch2(config-if)#no shutdown

+ Determine and configure the default gateway of the new switch

The default gateway of this new switch is same as that of building_1 switch, which is

Switch2(config)#ip default-gateway

+ Determine and configure the correct VTP domain name for the new switch

The VTP domain name shown on building_1 switch is 9tut so we have to use it in the new switch (notice: the VTP domain name will be different in the exam and it is case sensitive so be careful)

Switch2(config)# vtp domain 9tut

+ Configure the new switch as a VTP client

Switch2(config)#vtp mode client

We should check the new configuration with the “show running-config” & “show vtp status”; also try pinging from the new switch to the the default gateway to make sure it works well.

Finally save the configuration

Switch2#copy running-config startup-config

You can download this sim and practice it with Packet tracer here. If you have any problem with this file you can download another version of this sim here.

Comments (3) Comments
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  1. Sergey
    June 23rd, 2016

    Hi. What version of packet tracer are your labs for?
    Lab say to enter show running-config command, but on my PT 6.3 it says it
    building_1>show running-config
    % Invalid input detected at ‘^’ marker.

  2. Sergey
    June 23rd, 2016

    Sorry, disregard – me stupid

  3. Lela
    August 21st, 2016

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