Is the note for 'Nodes & Agents of NS2 & NAM' free to read?

Yes, NotesMedia provides free access to 'Nodes & Agents of NS2 & NAM' notes for BCA / B.Tech preparation online.

Does this cover the syllabus for Computer Network & Communication Notes in English?

Yes, this chapter covers key concepts of 'Nodes & Agents of NS2 & NAM' under the Computer Network & Communication Notes in English syllabus for BCA / B.Tech.

How long does it take to read 'Nodes & Agents of NS2 & NAM'?

This note is approximately a 8-minute read.

Nodes & Agents of NS2 & NAM - (BCA / B.Tech)

Nodes & Agents of NS2 & NAM in Hindi

Nodes and agents in NS2 are the basic elements of network simulation. Nodes are the physical components of the network, while agents are responsible for data communication. By using NAM, the activities of these nodes and agents can be graphically represented, which helps researchers and students to understand various aspects of networking.
The combination of NS2 and NAM acts as a powerful tool in networking research, which is helpful in studying various network protocols and topologies.

NS2 (Network Simulator 2) and NAM (Network Animator) are major tools in the field of network simulation. In NS2, nodes and agents are important elements for simulating various aspects of networking.

Here we will discuss nodes and agents in detail.

Nodes in Hindi | Nodes in NS2:

1. Importance of nodes: Nodes are the main components of a network. These are the devices through which data communication takes place. Each node has a unique identity and it can perform many functions in a network, such as sending, receiving, and routing data.

2. Types of nodes: There are different types of nodes in NS2, which include:

Sensor Nodes: These are commonly used in wired or wireless networks and they collect information.
Gateway Nodes: These nodes guide data between other nodes, such as nodes connected to the internet.
End-user Nodes: These nodes send and receive data for end-users, such as computers or mobile devices.

3. Creation of nodes

The creation of nodes in NS2 is done in OTcl (Object-oriented Tcl). For example:

# Start of NS2 script

set ns [new Simulator]

# Creation of nodes

set node1 [$ns node]

set node2 [$ns node]

# Adding connection

$ns connect $node1 $node2

Agents in NS2

1. Importance of agents: Agents are functional elements in NS2 that participate in the process of data communication. Agents work within nodes and implement network protocols.

2. Types of agents

There are different types of agents in NS2, such as:

TCP Agents: These send data in a connectionless manner. Examples: TCP Reno, TCP Tahoe, TCP New Reno.
UDP Agents: These are connectionless protocols, which are used for real-time applications.
Internet Protocol (IP) Agents: These are used for routing packets and other network functions.

3. Creation of agents

Agents are defined in NS2 in the same way as nodes:

# Creation of a TCP agent

set tcp_agent [$ns create-namespace TCP]

NAM (Network Animator)

1. Importance of NAM: NAM is a graphical animator that is used to see the simulation data generated by NS2. It provides users with a visual experience of the activities of nodes and agents during the simulation.

2. View of nodes and agents in NAM: In NAM, nodes and agents are displayed in graphical form. This helps users to understand the data flow between nodes, such as packet transfer, latency, and throughput.

3. Use of NAM: To see data in NAM, you need to load the trace file generated from NS2. This can be done using the following command:

nam tracefile.nam

Nodes & Agents of NS2 & NAM

Nodes & Agents of NS2 & NAM in Hindi

In this Chapter