Mobile Cloud Networking and Mobility Control 119
The aim of FMIPv6 is to reduce the latency of handover by
remedying the shortcomings of MIPv6 in terms of time taken to detect
the mobile’s movement and register the new care-of-address, but also
by pre-emptive and tunnel-based handovers.
Approaches based on forwarding tables consist of keeping routes
specific to the host in the routers to transfer messages. Cellular IP and
HAWAII (Handoff-Aware Wireless Access Internet Infrastructure)
are two examples of micromobility protocols using forwarding tables.
5.6. Multihoming
Multihoming involves a terminal connecting to several networks
simultaneously in order to optimize the communications by selecting
the best network, or by allowing an application to take several paths.
Thus, the packets forming the same message may take several
different paths simultaneously. In the slightly longer term, a terminal
will be connected to several networks, and each application will be
able to choose the transport network (or networks) it uses.
The term “multihoming” refers to the multiple “homes” that a
terminal may have, with each “home” assigning its own IP address to
the terminal. Thus, the terminal has to manage the different IP
addresses assigned to it.
Multihoming enables us to have several simultaneous connections
to different access networks. A multihomed terminal is defined as a
terminal which can be reached via several IP addresses.
We can distinguish three scenarios:
– a single interface and several IP addresses. This is the case for a
terminal in a multihomed site. Each IP address of the terminal belongs
to a different ISP. The goal of this configuration is to improve
reliability and optimize performances by using traffic engineering;
– several interfaces, with one IP address per interface. The
terminal has several physical interfaces, and each interface has only
one IP address. Such is the case with a multi-interface mobile
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The aim of FMIPv6 is to reduce the latency of handover by
remedying the shortcomings of MIPv6 in terms of time taken to detect
the mobile’s movement and register the new care-of-address, but also
by pre-emptive and tunnel-based handovers.
Approaches based on forwarding tables consist of keeping routes
specific to the host in the routers to transfer messages. Cellular IP and
HAWAII (Handoff-Aware Wireless Access Internet Infrastructure)
are two examples of micromobility protocols using forwarding tables.
5.6. Multihoming
Multihoming involves a terminal connecting to several networks
simultaneously in order to optimize the communications by selecting
the best network, or by allowing an application to take several paths.
Thus, the packets forming the same message may take several
different paths simultaneously. In the slightly longer term, a terminal
will be connected to several networks, and each application will be
able to choose the transport network (or networks) it uses.
The term “multihoming” refers to the multiple “homes” that a
terminal may have, with each “home” assigning its own IP address to
the terminal. Thus, the terminal has to manage the different IP
addresses assigned to it.
Multihoming enables us to have several simultaneous connections
to different access networks. A multihomed terminal is defined as a
terminal which can be reached via several IP addresses.
We can distinguish three scenarios:
– a single interface and several IP addresses. This is the case for a
terminal in a multihomed site. Each IP address of the terminal belongs
to a different ISP. The goal of this configuration is to improve
reliability and optimize performances by using traffic engineering;
– several interfaces, with one IP address per interface. The
terminal has several physical interfaces, and each interface has only
one IP address. Such is the case with a multi-interface mobile
www.it-ebooks.info