Explain the three modes of vtp switches, Computer Network Security

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QUESTION

(a) What do you understand by a VLAN? Provide one advantage of using a VLAN.

(b) What is a trunk port in a VLAN?

(c) A VLAN will be created using one or more switches. Consider we have switch A and switch B. Analyse the given configurations of switch A and switch B.Show  a diagram to show the correct interpretation of the configurations for the creation of VLANs. Consider that switch A and B have twelve ports each.

SwitchA(config)#configure terminal
SwitchA(config)#vlan 2
SwitchA(config)#vlan 2 name marketing
SwitchA(config)#vlan 3
SwitchA(config)#vlan 3 name management
SwitchA(config)#exit

SwitchA(config)#configure terminal
SwitchA(config)#interface fastethernet 0/4
SwitchA(config-if)#switchport access vlan 2
SwitchA(config-if)#exit
SwitchA(config)#interface fastethernet 0/5
SwitchA(config-if)#switchport access vlan 2

SwitchA(config-if)#exit

SwitchA(config)#configure terminal
SwitchA(config)#interface fastethernet 0/11
SwitchA(config-if)#switchport access vlan 3
SwitchA(config-if)#exit
SwitchA(config)#interface fastethernet 0/12
SwitchA(config-if)#switchport access vlan 3
SwitchA(config-if)#exit

SwitchB(config)#configure terminal
SwitchB(config)#vlan 2
SwitchB(config)#vlan 2 name marketing
SwitchB(config)#vlan 3
SwitchB(config)#vlan 3 name management
SwitchB(config)#exit

SwitchB(config)#configure terminal
SwitchB(config)#interface fastethernet 0/2
SwitchB(config-if)#switchport access vlan 2
SwitchB(config-if)#exit
SwitchB(config)#interface fastethernet 0/3
SwitchB(config-if)#switchport access vlan 2

SwitchB(config-if)#exit

SwitchB(config)#configure terminal
SwitchB(config)#interface fastethernet 0/4
SwitchB(config-if)#switchport access vlan 3
SwitchB(config-if)#exit
SwitchB(config)#interface fastethernet 0/5
SwitchB(config-if)#switchport access vlan 3
SwitchB(config-if)#exit

SwitchA(config)#configure terminal
SwitchA(config)#interface fastethernet 0/1
SwitchA(config-if)#switchport mode trunk
SwitchA(config-if)#switchport trunk encapsulation isl
SwitchA(config-if)#end
SwitchB(config)#interface fastethernet 0/1
SwitchB(config-if)#switchport mode trunk
SwitchB(config-if)#switchport trunk encapsulation isl
SwitchB(config-if)#end

(d) VLAN trunking protocol is a Cisco proprietary protocol. Explain the three modes of VTP switches.


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