Connecting nodes together

Now, start to connect the nodes with each other while the nodes are offline, and repeat for each node till you finish connecting all of them inside the topology; then, start the lab:

The final view after adding IP addresses and some custom shapes to the topology will be as follows:

Now, our topology is ready and should be loaded with basic configuration. I used the following snippet as a configuration base for any Cisco-IOS device that enabled SSH and telnet and configured the username for access. Notice that there are some parameters surrounded with {{ }}. We will discuss them in the next chapter when we generate a golden configuration using a Jinja2 template but, for now, replace them with hostname and the management IP address for each device respectively:

hostname {{hostname}}
int gig0/0
  no shutdown
  ip address {{mgmt_ip}} 255.255.255.0

aaa new-model
aaa session-id unique
aaa authentication login default local
aaa authorization exec default local none 

enable password access123
username admin password access123
no ip domain-lookup

lldp run

ip domain-name EnterpriseAutomation.net
ip ssh version 2
ip scp server enable
crypto key generate rsa general-keys modulus 1024