FEATURES OF MOBILE IP
Mobile Internet Protocol (Mobile IP) was created in order to
provide better mobile connectivity without interrupting computers that are
already connected to a network. When mobile devices were introduced, there was
no network technology in place for these devices to connect to the Internet.
Mobile IP created a new subset of IP connectivity that worked within the
already established system, keeping network engineers from having to scrap and
reinvent the way Internet connection works.
Roaming Connectivity
Mobile IP allows mobile devices to connect to the Internet when
they are not at their home network. This lets laptops connect to hotspots and
it lets phones connect through 3G and other Internet network sources. An IP
address lets a network know where to send and receive information from on a
network. Mobile IP uses an address that references its home network while
finding a location on the new network. This keeps Mobile IP from knocking other
computers off of a network, because each computer comes from a unique network
and has a unique number.
Compatibility
Mobile IP is compatible with most networks that offer the
Internet. This include the 3G network used for mobile televisions; Internet
hotspots found in cafes, airports and book stores; and all home network
devices. Early attempts at Mobile IP would only work with certain routers or
certain types of networks. Mobile IP today has no special requirements because
the system is universal and fits within the original IP infrastructure.
Tunnelling and Reverse Tunnelling
The method by which mobile IP receives information from a
network is called tunnelling. A network cannot directly send information to a
mobile IP device. In order to get this information the mobile device must
create an IP address within its new IP address. This allows the network to send
information to the IP address through the ―tunnel‖ of the two new IPs.
Firewalls and routers can sometimes block tunnelling by enabling what is called
ingress filtering. Mobile IP also can use the process of reverse tunnelling,
which is a similar process that reverses the flow of information to achieve the
same result as tunnelling.
Cordless
The greatest feature of Mobile IP is that there are no cords
needed to complete the network connection. The standard IP required that
networks be connected by a phone line or Ethernet cord. With Mobile IP, the
device finds the network automatically and attempts to establish a connection.
Some mobile capable devices like laptop computers have the ability to connect
using the Mobile IP or using the standard IP with an Ethernet or phone cord.
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