Activity 3.5.2: Subnetting Scenario 1
Here’s two parts to follow in-
A. Subnet Masking B. Network Design
Learning Objectives: Upon completion of this lab, you will be able to: 1. Determine the number of subnets needed. 2. Determine the number of hosts needed. 3. Design an appropriate addressing scheme.
Part-A Network#0 Network Available-
192.168.9.0
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.1-192.168.9.30
Broadcast Address-
192.168.9.31
Network#1 Network Available-
192.168.9.32
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.33-192.168.9.62
Broadcast Address-
192.168.9.63
Network#2 Network Available-
192.168.9.64
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.65-192.168.9.94
Broadcast Address-
192.168.9.95
Network#3 Network Available-
192.168.9.96
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.97-192.168.9.126
Broadcast Address-
192.168.9.127
Network#4 Network Available-
192.168.9.128
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.129-192.168.9.158
Broadcast Address-
192.168.9.159
Network#5 Network Available-
192.168.9.160
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.161-192.168.9.190
Broadcast Address-
192.168.9.191
Network#6 Network Available-
192.168.9.192
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.193-192.168.9.222
Broadcast Address-
192.168.9.223
Network#7 Network Available-
192.168.9.224
Subnet Mask-
255.255.255.224
Host Range-
192.168.9.225-192.168.9.254
Broadcast Address-
192.168.9.255
Part-B Part B is all about designing the network and configuring the network devices. There are certain general steps to follow in order to design and configure the network.
Step-1: In ‘Cisco Packet Tracer’ there is options for which device you want to add, remove, or do operations.
In the left down corner side of the user interface, there is a collection of devices. From the collection you may add your required devices.
Step-2 After choosing the devices, connect them with wires from the same collection panel. Note that, for -Router to Router Connection, only serial DCE is used (select “serial port” when connecting for both side) -Router to Switch Connection, Copper Straight wire can be used (select “Fast Ethernet” when connecting for both side) -Switch to End User/PC Connection, Copper Straight wire can be used (select “Fast Ethernet” when connecting for both side)
Step-3 Click on the router in the middle (instructed as “HQ”), and select ‘CLI’ to configure.
An editable text box will appear and in order to configure the router you need to write commands here. It can be like this for the HQ router: Continue with configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>enable Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname HQ HQ(config)#interface se2/0 HQ(config-if)#ip address 192.168.9.161 255.255.255.224 HQ(config-if)#clock rate 56000 HQ(config-if)#no shut %LINK-5-CHANGED: Interface Serial2/0, changed state to down HQ(config-if)# %LINK-5-CHANGED: Interface Serial2/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to up HQ(config-if)#exit HQ(config)#interface se3/0 HQ(config-if)#ip address 192.168.9.97 255.255.255.224 HQ(config-if)#clock rate 56000 HQ(config-if)#no shut %LINK-5-CHANGED: Interface Serial3/0, changed state to down HQ(config-if)#exit HQ(config)#interface se3/0 HQ(config-if)#ip address 192.168.9.97 255.255.255.224 HQ(config-if)#clock rate 56000 HQ(config-if)#no shut HQ(config-if)#exit HQ(config)# %LINK-5-CHANGED: Interface Serial3/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/0, changed state to up
HQ(config)#interface fa0/0 HQ(config-if)#ip address 192.168.9.129 255.255.255.224 HQ(config-if)#no shut %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up HQ(config-if)#exit HQ(config)#
For the Router in left(instructed as BRANCH 1): Continue with configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>enable Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname BRANCH1 BRANCH1(config)#interface se2/0 BRANCH1(config-if)#ip address 192.168.9.190 255.255.255.224 BRANCH1(config-if)#no shut %LINK-5-CHANGED: Interface Serial2/0, changed state to up BRANCH1(config-if)# %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to up
BRANCH1(config)#interface fa0/0 BRANCH1(config-if)#ip address 192.168.9.33 255.255.255.224 BRANCH1(config-if)#no shut %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up BRANCH1(config-if)#exit
BRANCH1(config)#interface fa1/0 BRANCH1(config-if)#ip address 192.168.9.225 255.255.255.224 BRANCH1(config-if)#no shut %LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up BRANCH1(config-if)#exit BRANCH1(config)#interface fa0/0 BRANCH1(config-if)#ip address 192.168.9.193 255.255.255.224 BRANCH1(config-if)#no shut BRANCH1(config-if)#exit BRANCH1(config)#
For the Router in left(instructed as BRANCH 2): Continue with configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>enable Router#config t Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname BRANCH2 BRANCH2(config)#interface se3/0 BRANCH2(config-if)#ip address 192.168.9.126 255.255.255.224 BRANCH2(config-if)#no shut %LINK-5-CHANGED: Interface Serial3/0, changed state to up BRANCH2(config-if)#exit BRANCH2(config)# %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/0, changed state to up BRANCH2(config)#interface fa0/0 BRANCH2(config-if)#ip address 192.168.9.65 255.255.255.224 BRANCH2(config-if)#no shut %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up BRANCH2(config-if)#exit BRANCH2(config)#interface fa1/0 BRANCH2(config-if)#ip address 192.168.9.33 255.255.255.224 BRANCH2(config-if)#no shut %LINK-5-CHANGED: Interface FastEthernet1/0, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0, changed state to up BRANCH2(config-if)#exit BRANCH2(config)#
Made Easy: in the above command lines only interface names and I P Addresses are changed by the design. But in all cases, the procedure is all the way same. In cases of increased number of routers, repeat the procedure until all the routers are configured.
Step-4 Configuring the End User devices/PCs: Click on the device, a box will appear and follow the below steps: Click ‘Desktop’>IP Configuration>3 different text area will appear. All you have to do is fill t he boxes with dedicated IP Address, Subnet Mask and Default Gateway.
A sample screening is provided below:
IP address is the dedicated address for that device, Subnet mask is the same from the beginning and the default gateway is the configured IP address from the router maintaining the particular network. Like here is one done for the PC-2 for your convenience:
Repeat the procedure for all the PCs according to their respective dedicated IP Address, Subnet Mask and Default Gateway.
