Addressing Table

Device

Interface

IP Address

Subnet Mask

Default Gateway

Branch$1$

G$0/0$

N$/$A

G$0/1$

N$/$A

S$0/0/0$

N$/$A

Branch$2$

G$0/0$

N$/$A

G$0/1$

N$/$A

S$0/0/0$

N$/$A

Room$-114$

VLAN $1$

Room$-279$

VLAN $1$

Room$-312$

VLAN $1$

Room$-407$

VLAN $1$

PC$-$A

NIC

PC$-$B

NIC

PC$-$C

NIC

PC$-$D

NIC

Objectives

Part $1$: Examine the Network Requirements

Part $2$: Design the VLSM Addressing Scheme

Part $3$: Assign IP Addresses to Devices and Verify Connectivity

Background

In this activity, you are given a $/24$ network address to use to design a VLSM addressing scheme. Based on a set of requirements, you will assign subnets and addressing, configure devices and verify connectivity.

Part $1$: Examine the Network Requirements

Step $1$: Determine the number of subnets needed.

You will subnet the network address $172\mathrm{.}31\mathrm{.}103\mathrm{.}0/24.$ The network has the following requirements:

Room$-114$ LAN will require $27$ host IP addresses

Room$-279$ LAN will require $25$ host IP addresses

Room$-312$ LAN will require $14$ host IP addresses

Room$-407$ LAN will require $8$ host IP addresses