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Spanning Tree Lab Sim

May 17th, 2014 in Lab Sim, LabSim Go to comments

Question:

The headquarter office for a cement manufacturer is installing a temporary Catalyst 3550 in an IDF to connect 24 additional users. To prevent network corruption, it is important to have the correct configuration prior to connecting to the production network. It will be necessary to ensure that the switch does not participate in VTP but forwards VTP advertisements that are received on trunk ports.
Because of errors that have been experienced on office computers, all nontrunking interfaces should transition immediately to the forwarding state of Spanning tree. Also, configure the user ports (all FastEthernet ports) so that the ports are permanently nontrunking.

SpanningTreeLab.jpg

Requirements:
You will configure FastEthernet ports 0/12 through 0/24 for users who belong to VLAN 20. Also, all VLAN and VTP configurations are to be completed in global configuration mode as VLAN database mode is being deprecated by Cisco. You are required to accomplish the following tasks:

1. Ensure the switch does not participate in VTP but forwards VTP advertisements received on trunk ports.
2. Ensure all non-trunking interfaces (Fa0/1 to Fa0/24) transition immediately to the forwarding state of Spanning-Tree.
3. Ensure all FastEthernet interfaces are in a permanent non-trunking mode.
4. Place FastEthernet interfaces 0/12 through 0/24 in VLAN 20.

Answer and Explanation:

Switch>enable
Switch#configure terminal
Switch(config)#interface range fa0/1 – 24
Switch(config-if-range)#switchport mode access (Make all FasEthernet interfaces into access mode)
Switch(config-if-range)#spanning-tree portfast (Enables the PortFast on interface)

Next, we need to assign FastEthernet ports 0/12 through 0/24 to VLAN 20.

By default, all ports on the switch are in VLAN 1. To change the VLAN associated with a port, you need to go to each interface (or a range of interfaces) and tell it which VLAN to be a part of.

Switch(config-if-range)#interface range fa0/12 – 24
Switch(config-if-range)#switchport access vlan 20 (Make these ports members of vlan 20)
Switch(config-if-range)#exit

Next we need to make this switch in transparent mode. In this mode, switch doesn’t participate in the VTP domain, but it still forwards VTP advertisements through any configured trunk links.

Switch(config)#vtp mode transparent
Switch(config)#exit
Switch#copy running-config startup-config

(Notice: Many reports said the copy running-config startup-config didn’t work but they still got the full mark)

 

Other lab-sims in this site:

LACP with STP Sim
MLS and EIGRP Sim
VTP Lab 2
VTP Lab
AAAdot1x Lab Sim

Comments
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  1. Henk-2017
    April 4th, 2017

    You forgot an objective;
    3. Ensure all FastEthernet interfaces are in a permanent non-trunking mode.

    interface range fa0/1 – 24
    switchport nonegotiate

  2. RON
    April 5th, 2017

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    April 9th, 2017

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    April 18th, 2017

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    April 19th, 2017

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    April 20th, 2017

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    April 21st, 2017

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  19. engi888
    June 15th, 2017

    Which two configurations can you apply to a port so that it tags traffic with VLAN915? (Choose two.)

    A. interface GigabitEthernet0/0
    switchport mode access
    switchport access vlan 915

    B- interface GigabitEthernet0/0
    switchport mode trunk
    switchport trunk encapsulation dot1q
    switchport trunk allowed vlan 915

    C. interface GigabitEthernet0/0
    switchport mode access
    switchport voice vlan 915
    switchport access vlan 915

    D. interface GigabitEthernet0/0.915
    encapsulation dot1q 915E.
    interface GigabitEthernet0/0.915
    switchport mode access
    switchport access vlan 915

  20. engi888
    June 15th, 2017

    Which two configurations can you apply to a port so that it tags traffic with VLAN
    915? (Choose two.)
    A. interface GigabitEthernet0/0
    switchport mode access
    switchport access vlan 915
    B. interface GigabitEthernet0/0
    switchport mode trunk
    switchport trunk encapsulation dot1q
    switchport trunk allowed vlan 915
    C. interface GigabitEthernet0/0
    switchport mode access
    switchport voice vlan 915 switchport access vlan 915
    D. interface GigabitEthernet0/0.915
    encapsulation dot1q 915
    E. interface GigabitEthernet0/0.915
    switchport mode access
    switchport access vlan 915

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  29. Ahmad
    August 6th, 2017

    @ Nano
    from where you study the MCQ??

  30. ExamTaker
    August 13th, 2017

    Hello everyone, can someone confirm in STP lab do we need to add the following command to achieve objective # 3. Ensure all FastEthernet interfaces are in a permanent non-trunking mode.
    interface range fa0/1 – 24
    switchport nonegotiate
    or will this be enough
    Switch(config-if-range)#switchport mode access
    Thanks everyone

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