Console Connection

Cisco created a dedicated console port (RJ45) for connection to their switch.

This is to connect to the switch to connect to the Network Switch to control the switch over terminal.

The configure:

Access can be used over Telnet or SSH (prefer as more encrypted)

Cli mode

user mode promp start with >, only allow a few command. To go to privilege mode we can type enable
privilege mode prompt start with # allow more commands
global config mode to configure with configure terminal

Use ? to show all command and show suggestions.

show to display information:

show ip bgp sum: show the bgp mapping
show running-config: display current system configuration
show startup-config: display the start up configuration
show interface fa0/24: display information of port 24
- In here it will display CRC (Cyclic Redundancy Check) and other information
show run int fa0/24 to show the configuration of the interface which will display information i.e Speed, duplex, etc

To save running-config to startup-config, use wr mem

To erase startup-config use wr erase

Entering config mode with config t.

In config, to set password using password your-password
To set enable password use enable secret your-sudo-password
To allow multiple connections, set line vty 0 15
- In this case, we set 15 ports of VTY (Virtual Teletype) connection so that we can have 15 simulatenously connection
- After this, we get into config-line mode where we can set password for the connection (i.e password line-password)
To create an account use username your-login secret your-password

logging synchronous:

no ip domain-lookup:

host your-host-name setup hot name
ip domain-name your-domain.com use domain name
crypto key generate rsa generate rsa
line vty 0 15
1. transport input all
2. or transport input ssh telnet specify what kind of protocol to use