IP addresses are configured statically or dynamically. This lab is a simple lab of a small business network. Two of the subnets will be dynamically assigning IP addresses and the third subnet for the servers will be statically assigned. The class A subnet 10.75.20.0/24 is divided into three variable length subnets.

Variable length subnet mask (VLSM)is when the subnet design uses more than one mask in the same network. This lab requires the workstation subnet to have a subnet mask of 255.255.255.128 which allows 126 useable IP addresses. The laboratory subnet is smaller subnet that will only require a maximum of 28 IP addresses. The subnet mask used for the laboratory subnet will be 255.255.255.224, the mask allows a total of 30 useable IP addresses.

VLAN IDSubnet NameSubnet IPMaskGateway
11Laboratory10.75.20.0255.255.255.12810.75.20.126
20Workstation10.75.20.128255.255.255.22410.75.20.158
35Server10.75.20.160255.255.255.24010.75.20.174

Task 1:
Configure the host name on both the router and switch.

Router>enable
Router#configure terminal
Router(config)#hostname R1
R1(config)#


Switch>enable
Switch#configure terminal
Switch(config)#hostname Sw1
Sw1(config)#

Task 2:
Configure the subinterfaces using 802.1q encapsulationon on the routers interface. Subinterfaces should match VLAN IDs. Assign IP addresses in each of the subinterfaces, using the identified gateway and subnet mask.

R1(config)#interface ethernet 0/0
R1(config-if)#no shutdown
R1(config-if)#interface ethernet 0/0.11
R1(config-subif)#encapsulation dot1q 11
R1(config-subif)#description vLAN-11_Laboratory
R1(config-subif)#ip address 10.75.20.126 255.255.255.128
R1(config-subif)#no shutdown
R1(config-subif)#exit
R1(config)#interface ethernet 0/0.20
R1(config-subif)#encapsulation dot1q 20
R1(config-subif)#description vLAN-20_Workstation
R1(config-subif)#ip address 10.75.20.158 255.255.255.224
R1(config-subif)#no shutdown
R1(config-subif)#exit
R1(config)#interface ethernet 0/0.35
R1(config-subif)#encapsulation dot1q 35
R1(config-subif)#description vLAN-35_Server
R1(config-subif)#ip address 10.75.20.174 255.255.255.240
R1(config-subif)#no shutdown
R1(config-subif)#exit
R1(config)#

Task 3:
Create DHCP pools on the DHCP Server router R1. Don’t forget to exclude the gateway address for both DHCP pools.

R1(config)#ip dhcp pool v11-Laboratory-Pool
R1(dhcp-config)#network 10.75.20.0 255.255.255.128
R1(dhcp-config)#default-router 10.75.20.126
R1(dhcp-config)#exit
R1(config)#ip dhcp pool v20-Workstation-Pool
R1(dhcp-config)#network 10.75.20.128 255.255.255.224
R1(dhcp-config)#default-router 10.75.20.158
R1(dhcp-config)#exit
R1(config)#ip dhcp excluded-address 10.75.20.126
R1(config)#ip dhcp excluded-address 10.75.20.158
R1(config)#end
R1#

Task 4:
Add VLANs to VLAN database on switch. Name them properly defined in the table next to the topology. 

Sw1(config)#vlan 11
Sw1(config-vlan)#name vLAN-11-Laboratory
Sw1(config-vlan)#exit
Sw1(config)#vlan 20
Sw1(config-vlan)#name vLAN-20-Workstation
Sw1(config-vlan)#exit
Sw1(config)#vlan 35
Sw1(config-vlan)#name vLAN-35-Server
Sw1(config-vlan)#exit
Sw1(config)#

Task 5:
Configure the trunk from the switch to the router. 

Sw1(config)#interface ethernet 3/3
Sw1(config-if)#switchport trunk encapsulation dot1q
Sw1(config-if)#switchport mode trunk
Sw1(config-if)#switchport trunk allowed vlan 11,20,35

Task 6:
Configure access ports for each of the devices and assign the proper VLAN to the respective subnet on the switch. Enable the ports to immediately go into a forwarding state.

Sw1(config)#interface range ethernet 0/1 - 2
Sw1(config-if-range)#switchport mode access
Sw1(config-if-range)#switchport access vlan 11
Sw1(config-if-range)#spanning-tree portfast
Sw1(config-if-range)#exit
Sw1(config)#interface range ethernet 1/1 - 2
Sw1(config-if-range)#switchport mode access
Sw1(config-if-range)#switchport access vlan 20
Sw1(config-if-range)#spanning-tree portfast
Sw1(config-if-range)#exit
Sw1(config)#interface range ethernet 2/1 - 2
Sw1(config-if-range)#switchport mode access
Sw1(config-if-range)#switchport access vlan 35
Sw1(config-if-range)#spanning-tree portfast
Sw1(config-if-range)#exit

Task 7:
Configure the servers with their respective host names, and Assign VPC7 the first available IP of the subnet and assign VPC8 the second available IP of the subnet. Don’t forget assign the gateway address.

VPCS> set pcname VPC7
VPC7> ip 10.75.20.161 /28 10.75.20.174
Checking for duplicate address...
PC1 : 10.75.20.161 255.255.255.240 gateway 10.75.20.174


VPCS> set pcname VPC8
VPC8> ip 10.75.20.162 /28 10.75.20.174
Checking for duplicate address...
PC1 : 10.75.20.162 255.255.255.240 gateway 10.75.20.174

Task 8:
Configure the host names of the Laboratory desktop PCs and configure them as DHCP clients. Ping the gateway to confirm the PCs connection.

VPCS> set pcname VPC3
VPC3> ip dhcp
DDORA IP 10.75.20.1/25 GW 10.75.20.126

VPC3> ping 10.75.20.126

84 bytes from 10.75.20.126 icmp_seq=1 ttl=255 time=0.566 ms
84 bytes from 10.75.20.126 icmp_seq=2 ttl=255 time=0.901 ms
84 bytes from 10.75.20.126 icmp_seq=3 ttl=255 time=1.188 ms
84 bytes from 10.75.20.126 icmp_seq=4 ttl=255 time=1.158 ms
84 bytes from 10.75.20.126 icmp_seq=5 ttl=255 time=0.947 ms

VPCS> set pcname VPC4
VPC4> ip dhcp
DDORA IP 10.75.20.2/25 GW 10.75.20.126

VPC4> ping 10.75.20.126

84 bytes from 10.75.20.126 icmp_seq=1 ttl=255 time=0.581 ms
84 bytes from 10.75.20.126 icmp_seq=2 ttl=255 time=0.952 ms
84 bytes from 10.75.20.126 icmp_seq=3 ttl=255 time=1.306 ms
84 bytes from 10.75.20.126 icmp_seq=4 ttl=255 time=0.921 ms
84 bytes from 10.75.20.126 icmp_seq=5 ttl=255 time=0.953 ms

Task 9:
Configure the host names of the Workstation Laptop PCs and configure them as DHCP clients. Ping the gateway to confirm the PCs connection. 

VPCS> set pcname VPC5
VPC5> ip dhcp
DDORA IP 10.75.20.129/27 GW 10.75.20.158

VPC5> ping 10.75.20.158

84 bytes from 10.75.20.158 icmp_seq=1 ttl=255 time=0.606 ms
84 bytes from 10.75.20.158 icmp_seq=2 ttl=255 time=1.243 ms
84 bytes from 10.75.20.158 icmp_seq=3 ttl=255 time=1.294 ms
84 bytes from 10.75.20.158 icmp_seq=4 ttl=255 time=1.304 ms
84 bytes from 10.75.20.158 icmp_seq=5 ttl=255 time=1.386 ms



VPCS> set pcname VPC6
VPC6> ip dhcp
DDORA IP 10.75.20.130/27 GW 10.75.20.158

VPC6> ping 10.75.20.158

84 bytes from 10.75.20.158 icmp_seq=1 ttl=255 time=0.736 ms
84 bytes from 10.75.20.158 icmp_seq=2 ttl=255 time=1.036 ms
84 bytes from 10.75.20.158 icmp_seq=3 ttl=255 time=1.082 ms
84 bytes from 10.75.20.158 icmp_seq=4 ttl=255 time=1.138 ms
84 bytes from 10.75.20.158 icmp_seq=5 ttl=255 time=1.519 ms

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