Reducing Broadcast Domain using VLAN

The assignment aims to reduce broadcast domain in a LAN network using VLANs and implement redundancy in the network using Spanning Tree Protocol (STP) and Hot Standby Router Protocol (HSRP). The current network design has one broadcast domain, causing issues with speed and latency. To address this, three VLANs are created for commercial, HR, and engineering departments, reducing the broadcast domain to three. Additionally, redundancy is implemented by configuring a redundant Layer-3 switch and ring network architecture using STP. HSRP is also configured for device redundancy.

Challenges and Implementation
Site details and Challenges
 Reduce Broadcast domain using VLAN and Implementation of redundancy in LAN.
Currently the network is designed in one broadcast domain, so there is issue with the network
speed and high latency in the network.
Currently the network design has no redundancy due to this, therefore, if one device or one link
goes down, then all end user is not able to access network.
Site Solution and Technologies
1) To reduce broadcast domain, we need to implement VLAN in LAN. Currently there is one
VLAN which means one broadcast domain. So, I am going to create 3 VLAN for this
scenario. One broadcast domain is going to break down in 3 broadcast domains, Therefore
the network will be able to perform more efficient. VLAN details as mention below.
2) Currently, there is no redundancy in network in terms of devices and links. There is one
Layer-3 switch as the backbone of the network and there is one link use for connectivity
between Layer-3 switch and Layer-2 switches. I am going to implement the redundant Layer-
3 switch and ring network architecture. I need to configure the Spanning tree for the
redundancy of Links and HSRP for redundancy of Devices.
VLAN No. VLAN Assign
to IP address subnet
1 Commercial 192.168.1.0/24
2 HR 192.168.2.0/24
3 Engineering 192.168.3.0/24

Sample Configuration
1) VLAN configuration
switch(config)#vlan 2
switch(config-vlan)#name HR
2) Redundancy
a. Spanning tree configuration
switch(config)#spanning-tree mode rapid-pvst
switch(config)#spanning-tree portfast default
switch(config)#spanning-tree portfast bpduguard default
switch(config)#spanning-tree extend system-id
b. HSRP Configuration
Primary-SW(config)interface vlan 1
Primary-SW(config-if)ip address 192.168.1.2 255.255.255.0
Primary-SW(config-if)standby ip 192.168.1.1
Primary-SW(config-if)standby priority 110
Primary-SW(config-if)standby preempt
Secondary-SW(config)interface vlan 1
Secondary-SW(config)ip address 192.168..1.3 255.255.255.0
Secondary-SW(config)standby ip 192.168.1.1
Bibliography
Cisco Official Certification Guide – CCNA Routing and Switching by Wendell Odom