A mobile agent is a program that can migrate between hosts, performing processing at each one. It decides when and where to move next through a three step process of saving its state, transporting itself, and resuming. Mobile agents have attributes like state, code, and origin information. Mobility can be weak, restarting execution from the beginning on each move, or strong, continuing execution from the previous point. Events in a mobile agent's lifecycle include creation, dispatch, cloning, deactivation, activation, retraction, disposal, and communication. Mobile agents reduce network load, overcome latency, encapsulate protocols, adapt dynamically, execute asynchronously, and are fault tolerant.

1. Mobile Agent

2. What is mobile agent ?
-Program that can migrate : where and how ?
-Performs some processing at each host
-Agent decides when and where to move next
-How it Move : on just three steps
*Save state
*Transport
*Resume

3. A Mobile Agent Dissected
AttributesStateCode
Program in a
suitable
Language to
define
The behavior of
Agent
-Set the internal
variables
-Resume it is
activity after
moving to
another host
-info describing
the agent
-It is origin ,
owner
-Movement
history
-Authentication
key

4. Levels of mobility
Weak
-when moving a mobile
agent Carrier (Code +
DateState)
-global or instance variables
-on moving , execution has
to start from the beginning
Strong
-when moving a mobile agent
Carrier (Code + DateState +
Execution State)
-global or instance variables
- Execution State :local variables
and threads
-on moving : execution can be
continue from the point it is
stopped on the previous point

5. Events in Mobile Agent
 Creation: a brand new agent is born and its state is
initialized.
 Dispatch: an agent travels to a new host.
 Cloning: a twin agent is born and the current state of the
original is duplicated in the clone.
 Deactivation: an agent is put to sleep and its state is saved
in persistent storage.
 Activation: a deactivated agent is brought back to life and
its state is restored from persistent storage.

6. Events in Mobile
 Retraction: an agent is brought back from a remote host along
with its state to the home machine.
 Disposal: an agent is terminated and its state is lost forever.
 Communication: Notifies the agent to handle messages
incoming from other agents , which is the primary means of
inter-agent correspondence.

8. Why mobile agent ?
-They reduce the network load
-they overcome network latency
-they encapsulate protocols
-they adapt dynamically
-they execute asynchronously and
autonomously
-they are natural heterogeneous
-they are fault tolerance

9. Demo

10. Team
Bahaa Alaa
Eslam Hamouda
Hossam Nabih
Mohamed Sha3lan
Mohamed Shaply

11. THANKS