Network Security for Ethernet Switching

SWITCHING ENGINEERING

Table of Contents
Introduction.................................................................................................................... 3
Task - 1 LAN Switching Investigation...................................................................................3
1. Internetwork Concepts............................................................................................. 3
2. Switching Concepts................................................................................................ 4
3. Basic Switch Configuration....................................................................................... 5
Task - 2 Design and Investigate the Switching Security..............................................................5
1. Concepts of Network Security.................................................................................... 5
2. VLAN Attacks....................................................................................................... 6
3. Random Frame Stress Attacks................................................................................... 6
Task - 3 Network Design for Ethernet Switching......................................................................7
1. Ethernet Switching................................................................................................. 7
2. Difference between Layer 2 and Layer 3 Switching.........................................................7
3. Ethernet Switching Industrial Application.....................................................................7
4. Ethernet Switch Network Design................................................................................7
Task - 4 Wireless LAN Switching Investigation.......................................................................7
1. Wireless Switching Works........................................................................................ 7
2. WLAN switching Architecture...................................................................................7
3. Wireless Traffics.................................................................................................... 7
4. Wireless Management and Monitoring.........................................................................7
Conclusion..................................................................................................................... 7
References..................................................................................................................... 7
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Introduction
The Creative consultancy organization decided to create the network connection. The
organization has four building or department such as finance, admin, research and accounts. The
organization needs to create a separate VLAN for each building. It is also interested to create the
effective network connection for the organization. So, the network team will investigate the LAN
switching, Ethernet switching and Wireless LAN switching. The team also investigates the
network security to provide the secured network connection for organizations. The proposed
network must provide the effectiveness and scalability.
Task - 1 LAN Switching Investigation
1. Internetwork Concepts
The collection of individual networks is known as internetwork as it is connected by the
intermediate networking devices. In single large network, the internetworking uses the functions
tointerconnectother network devices. It must meet the challenges of administrating and creating
the internetwork. The internetworking has various challenges such as implementation of the
functional internetwork and it establishes the effective and efficient internetwork. It must face
the areas of connectivity, flexibility, reliability and network management. The internetworking
supports the communication between the disparate technologies. In network management, the
internetwork must be provide the centralized support and troubleshooting capabilities.
Most common internetworking devices are listed below.
 Hubs
 Switches
 Bridges
Hubs
Hubs are used for connecting the multiple Ethernet devices. It performs functions as a
single unit. The hubs are used for controlling the media access by utilizes the carried sense
multiple access with collision detection. The hubs operates at half duplex mode.
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Switches
Switches are used to link the Ethernet network. The switches are connected to the
network by using the twisted pair cabling. The hubs and switches are treating the data which they
receive. Hubs do its function by sending the data through the network. The switches work by
transferring the data from one port to another port which is considered as the destination port.
The switches operate at full duplex mode.
Bridges
Bridges are used to create the connection with other bridge network by using protocols.
Bridges work at the data link layer of the OSI model. The bridges are also used to link the
various networks and it easily develops the communication between the networks. The bridges
also connects two physical LAN, Logical LAN and Local area network by using the protocols.
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2. Switching Concepts
The Concept of switching is used to forward the packets from one port to other ports. The
network communication systems use the number switch nodes to create the communication
between two networks. Switching is commonly divided into two main types such as Connection
less and Connection oriented switches. The Connectionless switching does not require the
previous handshaking and acknowledgements. The connection oriented switching requires the
pre-established circuit along the path between the destinations. These switches first forward the
data to the circuit after transfer is completed. Because, switching circuit saves the data for future
use.The different types of switching techniques are listed in below.
 Circuit Switching
 Packet Switching
 Message Switching
The network switches are described as layer 2 and layer 3 switches. The layer 2 and layer
3 switches are organized to conform to the ISO seen layer model. These are discussed in below.
Layer 2 Switching
Layer 2 switches are used to learn the MAC address automatically and to create the table.
Layer 2 switch tables are used for forwarding the packets from one port to destination port. It
easily retrieves the information from the packets. It easily forwards the packets at the wire speed
of the network. It does not have impact on the network performance and band width issues.
Because it does not requires any set up and management.
Layer 3 Switching
Layer 3 switches are based on the routing information and it traditionally has the routers
function. It uses the specialized routing protocols. It easily enables the routers to learn the routes
between the network.
3. Basic Switch Configuration
The basic switch configuration is shown in below.
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For Switch 0,
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