Networking

If you are not a network engineer, chances are you have not paid attention to networks other than setting up an IPv4 or IPv6 address. That is because the subject itself is too vast, and most times it just works. 

If you have seen people not attempting, or attempting and failing, to build a hybrid cloud, it is because this aspect of it was not heeded to. While networks cannot be learnt in a chapter, we will deal with understanding the aspects essential to the functioning of the hybrid cloud. 

We will also introduce some new terms, which we will continue to use in the remainder of the book. However, if you are well versed in networking, you may simply glance over this section. 

Underlay network

Simply put, this is the physical network created by using the networking devices, such as switches, repeaters, routers, and some parameter security devices such as firewalls and so on. This includes the medium on which the packets travel by using electrical, wireless, or optical pulses.

The underlay...