In the previous video, we already configure the ip address of all router, server, and pc. 2
Now in this video, we are going to configure routing between Google and ISP. 3
In this case, we are going to use BGP. Remember that bgp is used to connecting between autonomous system. 4
So let’s say google is in autonomous system 1, and ISP is in autonomouos system 2. 5
Let’s start with google, router bgp 1, let’s define the neighbor, 6
in this case the neighbor will be ISP, so neighbor and then the ip address of ISP, 7
which is 10.10.10.2 remote-as 2, so this is the autonomous system number of ISP. 8
Next let’s advertise the connected network, let’s start with 10.10.10.0, 9
so network 10.10.10.0 mask 255.255.255.0, 10
Next let’s advertise the network that connected to server, network 172.16.10.0 mask 255.255.255.0 11
Okay we have done on google router, next let’s configure on ISP, router bgp 2, 12
and then let’s define the neighbor, in this case the neighbor is google, so neighbor 10.10.10.1 13
remote-as 1. This is the ip address of google, and this is the autonomous system number of google. 14
Next, let’s advertise the connected network, network 10.10.10.0 mask 255.255.255.0, 15
we will also need to advertise the network that connected to customer, 16
so network 10.20.20.0 mask 255.255.255.0 17
Okay now we have done configuring bgp on google and ISP. For testing, 18
here we can see the routing table on ISP. 19
Do show ip route, here we can see that now ISP have a route to go to the google server, 20
which is 172.16.10.0/24. 21
Let’s also check the routing table on the google router, 22
do show ip route, here we can see that we also have a route to go to the customer network, 23
which is 10.20.20.0/24. 24
Okay I think enough for this video, in the next video, we are going to learn about the concept 25
of network address translation. 26
Thank you for watching and see you on the next video.