- In this module, we're going to take a look
at the Border Gateway Protocol or BGP.
Some people call that the protocol of the internet
because it typically is used
to interconnect to different networks,
different autonomous systems on the internet.
We'll take a look at the fundamentals,
we'll get into some terminology,
I'll give you a really basic example
just to get comfortable with it.
Then we'll take a look at how BGP
makes its path selection decisions.
It's not as simple as calculating
a metric based on bandwidth,
it's going to be a lot more complicated than that.
Then we're going to get into some more in-depth examples.
So, we'll take a look at how to route
IP version 4 traffic with BGP.
And we're going to see that when our BGP neighbor
happens to be in the same network
and the same autonomous system as we are,
that's going to give us a different set of rules
about how things behave
and we'll get into how to get around
some of the issues that might crop up.
Then we're going to take a look at two different ways
of routing IP version 6 traffic over BGP.
But let's get started in our next video
by taking a look at the fundamentals
of Border Gateway Protocol.