CCNA Lab – VLAN Trunking Protocol (VTP)

CCNA Lab – VLAN Trunking Protocol (VTP)




    VTP (VLAN Trunking Protocol) CCNA Lab – Table of Contents:

    1. Lab Objective.

    2. Network Topology.

    3. Steps to Configure the Lab.

    4. Interview questions for Network Engineer  asked from VTP CCNA Lab.


Let’s now understand VTP practically using a simple CCNA-level lab.


Lab Objective:-

In this lab, you will:

Network Topology:-


  • Access Switches: Cisco 2960

  • Multilayer Switch: Cisco 3560

  • VLANs:

    • VLAN 10 → HR → 10.11.11.0/24

    • VLAN 20 → IT → 20.11.11.0/24

    • VLAN 50 → SERVER → 50.11.11.0/24

  • VTP Domain: cns.com













Step 1: Configure VTP Domain (All Access Switches)


enable
configure terminal
vtp domain cns.com
vtp version 2

Step 2: Configure VTP Modes



Switch0 – VTP Server

vtp mode server

Switch1 – VTP Server

vtp mode server

Switch2 – VTP Client

vtp mode client

Switch3 – VTP Transparent

vtp mode transparent

Step 3: Configure Trunk Links (Between Switches)


** All the links of switches leading to other switch should be made trunk.
 
interface range fa0/1 - 2
 switchport mode trunk
exit


Tip: VTP advertisements are sent only over trunk links.

Step 4: Create VLANs (Only on VTP Server – Switch0)


vlan 10
 name HR
vlan 20
 name IT
vlan 50
 name SERVER
exit


✔ VLANs will automatically propagate to VTP Clients
✖ VLANs will not propagate to Transparent switch

Step 5: Configure Access Ports (Only on Switch0 except Vlan 50)


HR VLAN (VLAN 10)


interface fa0/4
 switchport mode access
 switchport access vlan 10

IT VLAN (VLAN 20)


interface fa0/3
 switchport mode access
 switchport access vlan 20

Server VLAN (VLAN 50 – Switch3)


interface fa0/4
 switchport mode access
 switchport access vlan 50

Step 6: Verify VLAN Propagation


show vlan brief

Expected:

  • VLAN 10 & 20 on Server & Client switches

  • VLAN 50 only on Transparent switch

Step 7: Configure Multilayer Switch (Inter-VLAN Routing)


Enable Routing

enable
configure terminal
ip routing

Create SVIs

interface vlan 10
 ip address 10.11.11.10 255.255.255.0
 no shutdown

interface vlan 20
 ip address 20.11.11.10 255.255.255.0
 no shutdown

interface vlan 50
 ip address 50.11.11.10 255.255.255.0
 no shutdown

Step 8: Configure Trunk Between MLS and Access Switch


interface fa0/1
 switchport mode trunk

Step 9: Configure End Device IPs


Device      VLAN    IP Address    Gateway  
PC01010.11.11.110.11.11.10
PC21010.11.11.210.11.11.10
PC12020.11.11.120.11.11.10
PC32020.11.11.220.11.11.10
Server5050.11.11.150.11.11.10

Step 10: Verification Commands (CCNA Exam Focus)


show vtp status
show interfaces trunk
show vlan brief
ping <destination-ip>




l Interview questions for Network Engineer  asked from VTP CCNA Lab:-


## DISCLAIMER:- The questions asked in the interview are all scenario based and indirect, So you should try to understand the concept instead of cramming. You will be fortunate if you receive a direct question from the interviewer. 



1. What are the steps to configure VTP ?

2. You would get the diagram and asked about the traffic flow in case of inter- vlan communication using MLS (Multilayer Swtich) ?  So If you have understood all the previous topics I've written about you would be able to answer or you can go thorough a video on youtube with the topic name. 

3. Command to check the trunk interfaces ?

4. Command to check the vlan assignment of a interface ?

5. You could be asked to troubleshoot a issue where one Vlan is not able to communicate with other Vlan ? The interviewer wanna see your approach on this.


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