CISCO Lab # 6: Basic VLAN configuration in CISCO Switch

Tasks:

Configure the network as follows:
1) 3650 = layer 3 switch with IP addresses and interVLAN routing:
VLAN 1 = 10.1.1.254/24
VLAN 10 = 10.1.10.254/24,
VLAN 20 = 10.1.20.254/24
VLAN 30 = 10.1.30.254/24,
VLAN 100 = 10.1.100.254/24
2) Access layer switches will only have management IP addresses in VLAN 1:
Switch 1 = 10.1.1.1/24
Switch 2 = 10.1.1.2/24
Switch 3 = 10.1.1.3/24
3) Configure access ports as follows:
PC1 in VLAN 10 - 10.1.10.10/24
PC2 in VLAN 20 - 10.1.20.20/24
PC3 in VLAN 30 - 10.1.30.30/24
Server1 in VLAN 100 - 10.1.100.100/24
4) Configure ports between switches as trunks
5) Make sure that PCs can ping each other and the server
6) Make sure that switches can ping the PCs and server

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Solution:

We will first configure Layer 3 switch. We will define Switch Virtual Interfaces (SVIs) for each VLAN and assign IP Addresses as mentioned in the step 1 of the lab.

Core>en
Core#config t
Enter configuration commands, one per line. End with CNTL/Z.
Core#vlan 10
Core#exit
Core#vlan 20
Core#exit
Core#vlan 30
Core#exit
Core(config)#interface vlan 1
Core(config-if)#ip address 10.1.1.254 255.255.255.0
Core(config-if)# no shutdown
Core(config-if)#exit
Core(config)#interface vlan 10
Core(config-if)#
%LINK-5-CHANGED: Interface Vlan10, changed state to up
Core(config-if)#ip address 10.1.10.254 255.255.255.0
Core(config-if)# no shutdown
Core(config-if)#exit
Core(config)#
Core(config)#interface vlan 20
Core(config-if)#
%LINK-5-CHANGED: Interface Vlan20, changed state to up
Core(config-if)#ip address 10.1.20.254 255.255.255.0
Core(config-if)# no shutdown
Core(config-if)#exit
Core(config)#interface vlan 30
Core(config-if)#ip address 10.1.30.254 255.255.255.0
Core(config-if)# no shutdown
Core(config-if)#exit
Core(config)#
Core(config)#interface vlan 100
Core(config-if)#ip address 10.1.100.254 255.255.255.0
Core(config-if)# no shutdown
Core(config-if)#exi
Core(config)#

Next we will configure port 20 to be part of VLAN 100 where the server is placed.

Core(config)#interface gigabitEthernet 1/0/20
Core(config-if)#switchport mode access
Core(config-if)#switchport access vlan 100
% Access VLAN does not exist. Creating vlan 100
Core(config-if)#
%LINK-5-CHANGED: Interface Vlan100, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan100, changed state to up
Core(config-if)#exit

Next we will configure Trunk Interfaces

Core(config)#interface gigabitEthernet 1/0/1
Core(config-if)#switchport trunk encapsulation dot1q
Core(config-if)#switchport mode trunk
Core(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed state to up
Core(config-if)#exit

Core(config)#interface gigabitEthernet 1/0/2
Core(config-if)#switchport trunk encapsulation dot1q
Core(config-if)#switchport mode trunk
Core(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/2, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/2, changed state to up
Core(config-if)#exit

Core(config)#interface gigabitEthernet 1/0/3
Core(config-if)#switchport trunk encapsulation dot1q
Core(config-if)#switchport mode trunk
Core(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/3, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/3, changed state to up
Core(config-if)#exit
Core(config)#

Next we need to configure access switches. We need to assign IP Addresses to VLAN 1 interface and make the trunk as access interfaces

S1>
S1>en
S1#config t
Enter configuration commands, one per line. End with CNTL/Z.
S1(config)#
S1(config)#interface vlan 1
S1(config-if)#ip address 10.1.1.1 255.255.255.0
S1(config-if)#no shutdown
S1(config-if)#
S1(config)#interface gigabitEthernet 0/1
S1(config-if)#switchport mode trunk
S1(config-if)#exit
S1(config)#interface fastEthernet 0/1
S1(config-if)#switchport mode access
S1(config-if)#switchport access vlan 10
% Access VLAN does not exist. Creating vlan 10
S1(config-if)#exit
S1(config)#exit
S1#
%SYS-5-CONFIG_I: Configured from console by console
S1#

Similarly for the second switch

S2>
S2>en
S2#config t
Enter configuration commands, one per line. End with CNTL/Z.
S2(config)#interface vlan 1
S2(config-if)#ip address 10.1.1.2 255.255.255.0
S2(config-if)#exit
S2(config)#interface gigabitEthernet 0/1
S2(config-if)#switchport mode trunk
S2(config-if)#exit
S2(config)#interface fastethernet 0/1
S2(config-if)#switchport mode access
S2(config-if)#switchport access vlan 20
% Access VLAN does not exist. Creating vlan 20
S2(config-if)#
S2(config-if)#exit
S2(config)#exit
S2#
%SYS-5-CONFIG_I: Configured from console by console
S2#

And finally third switch

S3>
S3>en
S3#config t
Enter configuration commands, one per line. End with CNTL/Z.
S3(config)#interface vlan 1
S3(config-if)#ip address 10.1.1.3 255.255.255.0
S3(config-if)#exit
S3(config)#interface gigabitEthernet 0/1
S3(config-if)#switchport mode trunk
S3(config-if)#exit
S3(config)#interface fastEthernet 0/1
S3(config-if)#switchport mode access
S3(config-if)#switchport access vlan 30
% Access VLAN does not exist. Creating vlan 30
S3(config-if)#exit
S3(config)#exit
S3#
%SYS-5-CONFIG_I: Configured from console by console
S3#