Table of Contents
- 1 How does the home agent come to know that the mobile device is in a foreign network?
- 2 How does the foreign agent deliver the packet to the mobile node?
- 3 What is mobile routing?
- 4 What is mobile node?
- 5 What is the purpose of agent solicitation message in mobile computing?
- 6 What is mobile TCP in mobile computing?
How does the home agent come to know that the mobile device is in a foreign network?
Agent Discovery: Agents advertise their presence by periodically broadcasting their agent advertisement messages. The mobile node receiving the agent advertisement messages observes whether the message is from its own home agent and determines whether it is in the home network or foreign network.
How does a home agent know the current location of a mobile host?
Each foreign agent maintains a list known as a visitor list, which identifies those mobile hosts that are currently registered with it. The address of the foreign agent, supplied as the mobile host’s care-of address, defines the mobile host’s current location.
How does the foreign agent deliver the packet to the mobile node?
The foreign agent delivers the datagram to the mobile node. Datagrams from the mobile node to the Internet host are sent using normal IP routing procedures. If the mobile node is on a foreign network, the packets are delivered to the foreign agent. The foreign agent forwards the datagram to the Internet host.
Why are agent advertisement messages needed?
Mobile nodes use agent advertisements to determine their current point of attachment to the Internet or to an organization’s network. This way, mobile nodes that are already registered with it will know that they have not moved out of range of the foreign agent and that the foreign agent has not failed.
What is mobile routing?
The basic idea used for mobile routing on the internet and cellular network is for the mobile hosts to tell the host at the home location. This host, which acts on behalf of the mobile host called a home agent. Once it knows where the mobile host currently located, it can forward packets so that they are delivered.
What is Home Agent in Mobile IP?
A home agent is a router on a mobile node’s home network which tunnels datagrams for delivery to the mobile node when it is away from home. It maintains current location (IP address) information for the mobile node. It is used with one or more foreign agents.
What is mobile node?
1 A mobile node (MN) is a node that is capable of changing its point of attachment to the network across layers, namely layer 2 or layer 3. A mobile node may be either a mobile host (with no forwarding functionality) or a mobile router (with forwarding functionality).
What is foreign agent in mobile computing?
Foreign agent. A foreign agent is a router that stores information about mobile nodes visiting its network. Foreign agents also advertise care-of-addresses which are used by Mobile IP. Binding. A binding is the association of the home address with a care-of address.
What is the purpose of agent solicitation message in mobile computing?
Mobile nodes use agent advertisements to determine their current point of attachment to the Internet or to an organization’s network. An agent advertisement is an Internet Control Message Protocol (ICMP) router advertisement that has been extended to also carry a mobility agent advertisement extension.
What is routing for mobile hosts?
What is mobile TCP in mobile computing?
Transmission Control Protocol (TCP) is the transport layer protocol that serves as an interface between client and server. The TCP/IP protocol is used to transfer the data packets between transport layer and network layer. Mainly TCP is designed for fixed networks and fixed, wired networks.
What is tunneling and encapsulation?
Tunneling is a protocol that allows for the secure movement of data from one network to another. The encapsulation process allows for data packets to appear as though they are of a public nature to a public network when they are actually private data packets, allowing them to pass through unnoticed.