CCNA LAB No. 3 : LAN Switching Lab time: 1 session
 Students are recommended to read the entire lab requirement before starting. The TIP session should
only be used for troubleshooting. For any problem concerns hardware or losing connectivity, please contact
instructor.
Topology:
Two switches are connected by two physical lines as shown above.
1. Task 1
1. Access in the switches through console lines.
2. Configure the name of switches: Switch_A and Switch_B
Switch(config)#hostname Switch_A
Switch_A(config)#
3. Configure IP management address. This IP address in the subnet, which includes IP
address of PC.
Switch_A(config)#interface vlan 1
Switch_A(config-if)#ip address 10.2.0.15 255.255.255.0
Switch_A(config-if)#no shut
Note : No shut command is used to change state of vlan to up . However ; Switch 2950 series
has only one interface vlan is up .When you issue no shut command to another vlan , the
current vlan will change state to down .
4. Configure password so that PC1 can telnet in to Switch_A.
- To PC1 can telnet into Switch_A , Switch have to IP management address
- A password must be set on one or more of the vty lines for users to gain remote
access to a Switch through Telnet (Virtual Terminal Password)
Switch_A(config)#line vty 0 4
Switch_A(config-line)#login
Switch_A(config-line)#password <password >
-
5. Configure Switch_A so that after telnet to Switch_A, PC1 can go to global config mode
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10.2.0.15x/24
- To PC1 can go to global config mode , Switch_A have to has enable password

Switch_A(config-if)#switchport port-security violation shutdown11. Configure similarly for Switch_B.
2. Task 2
1. Configure vlan on Switch A and Switch B by using the following table:

Vlan Vlan Name Port
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2 Vlan 2 Fa0/2
3 Vlan 3 Fa0/3
4 Vlan 4 Fa0/4
The command vlan database can be used in the Privileged EXEC mode to enter into
VLAN configuration mode. A VLAN name may also be configured, if necessary:
Switch_A#vlan database
Switch_A(vlan)#vlan vlan_number
Switch_A(vlan)#exit
Issue Show vlan to view configuration :
Upon exiting, the VLAN is applied to the switch. The next step is to assign the VLAN to
one or more interfaces :
Switch_A(config)#interface f0/2
Switch_A(config-if)#switchport mode access
Switch_A(config-if)#switchport access vlan 2
2. Configure trunking encapsulation on switches to make frames of all vlans, transmitting
through the trunk link, are encapsulated, except vlan1.
Switch_A(config)#interface f0/20
Switch_A(config-if)#switchport mode trunk
Switch_A(config-if)#switchport trunk native vlan 1
Note : Switch 2950 series support only 802.1q on the trunk . If you use another Switch
as 3550 series you need to verify encapsulation type via command :