CompTIA Network+: A Comprehensive Beginners Guide to Learn About The CompTIA Network+ Certification from A-Z by Walker Schmidt

Author:Walker Schmidt [Schmidt, Walker]
Language: eng
Format: epub, azw
Published: 2019-04-19T05:00:00+00:00

Types of addresses

Broadcasts are one of the key definitive features in IPv4. However, considering the fact that broadcasts are responsible for a lot of network inefficiencies, they were eliminated in IPv6. The following are the key methods of communication in IPv6:

● Unicast

In this form of communication, all the data packets meant for a unicast address are sent to one interface. Considering the possibility of flooding the interface, the interface address can be shared with more than one device. This will help in balancing the traffic load.

● Link local addresses

Link local addresses operate in the same way that IPv4 manages private addresses. These addresses are not designed for routing. The benefit of using link-local addresses is that you can use them to configure a temporary or random LAN whenever necessary, perhaps to host a meeting for some small task that does not need to be routed, but can still have access to local services and files.

● Global unicast addresses

Global unicast addresses are routable and public. They operate the same way in IPv6 as they do in IPv4.

● Unique local addresses

Unique local addresses are also built for non-routing needs. However, they are designed for global use. Considering the global approach, it is highly unlikely that you will ever come across any unique local address overlapping with another. Unique local addresses are designed to support communication on one site while at the same time allowing you to route the communication to a variety of LANs.

● Anycast

Anycast addresses will identify several interfaces to which they can communicate. However, they communicate by diverting packets to a single address. The address to which the packets are delivered is often the closest IPv6 address the packets encounter, considering the routing distance.

● Multicast

Multicast communication is a situation where data packets are transmitted to different interfaces, each of which is identified according to their multicast address. All multicast addresses in IPv6 must begin with FF.

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