Netmiko-Use

Using Netmiko Library to access cisco devices to get the required output and also configure the device

Intial Requirement is to have Netmiko library installed we will create a basic Python Program that will perform tasks as below :

1. Function get_devices_info() will read the file and get the device loopback details
2. Function connect() will connect the devices using ssh (ConnectHandler used from library Netmiko)
3. Function device_output(net_connect) will provide the required output , here we have given command"sh ip int brief" .Command can be changed as per your requirement
4. Function evice_config_file(filename ) will config the devices as per the configuration present in specfic files stored as the .txt ,Here we are just configuring then ew loopback 10 and assigning Ip address .Further configuration lines can be add as per requirement. 5)Output will be displayed as below:

root@NetworkAutomation-1:~# python devices3.py

===========Router Loopback 1.1.1.1============================

Interface IP-Address OK? Method Status Protocol FastEthernet0/0 192.168.0.1 YES NVRAM up up FastEthernet1/0 10.10.12.1 YES NVRAM up up FastEthernet2/0 10.10.13.1 YES NVRAM up up Loopback0 1.1.1.1 YES NVRAM up up Loopback10 unassigned YES unset up up ['interface lo10\n', 'ip address 10.10.10.10 255.255.255.255\n', 'exit\n', '\n', '\n'] config term Enter configuration commands, one per line. End with CNTL/Z. Delhi(config)#interface lo10 Delhi(config-if)#ip address 10.10.10.10 255.255.255.255 Delhi(config-if)#exit Delhi(config)# Delhi(config)# Delhi(config)#end Delhi# Interface IP-Address OK? Method Status Protocol FastEthernet0/0 192.168.0.1 YES NVRAM up up FastEthernet1/0 10.10.12.1 YES NVRAM up up FastEthernet2/0 10.10.13.1 YES NVRAM up up Loopback0 1.1.1.1 YES NVRAM up up Loopback10 10.10.10.10 YES manual up up

===========Router Loopback 2.2.2.2============================

Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES NVRAM administratively down down FastEthernet1/0 10.10.12.2 YES NVRAM up up FastEthernet2/0 10.10.23.2 YES NVRAM up up Loopback0 2.2.2.2 YES NVRAM up up ['interface lo10\n', 'ip address 20.20.20.20 255.255.255.255\n', 'exit\n', '\n'] config term Enter configuration commands, one per line. End with CNTL/Z. Bangalore(config)#interface lo10 Bangalore(config-if)#ip address 20.20.20.20 255.255.255.255 Bangalore(config-if)#exit Bangalore(config)# Bangalore(config)#end Bangalore# Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES NVRAM administratively down down FastEthernet1/0 10.10.12.2 YES NVRAM up up FastEthernet2/0 10.10.23.2 YES NVRAM up up Loopback0 2.2.2.2 YES NVRAM up up Loopback10 20.20.20.20 YES manual up up

===========Router Loopback 3.3.3.3============================

Interface IP-Address OK? Method Status Protocol FastEthernet0/0 10.10.13.3 YES NVRAM up up FastEthernet1/0 unassigned YES NVRAM administratively down down FastEthernet2/0 10.10.23.3 YES NVRAM up up Loopback0 3.3.3.3 YES NVRAM up up ['interface loopback10\n', 'ip address 30.30.30.30 255.255.255.255\n', 'exit\n', '\n'] config term Enter configuration commands, one per line. End with CNTL/Z. R3(config)#interface loopback10 R3(config-if)#ip address 30.30.30.30 255.255.255.255 R3(config-if)#exit R3(config)# R3(config)#end R3# Interface IP-Address OK? Method Status Protocol FastEthernet0/0 10.10.13.3 YES NVRAM up up FastEthernet1/0 unassigned YES NVRAM administratively down down FastEthernet2/0 10.10.23.3 YES NVRAM up up Loopback0 3.3.3.3 YES NVRAM up up Loopback10 30.30.30.30 YES manual up up root@NetworkAutomation-1:# root@NetworkAutomation-1:# root@NetworkAutomation-1:~#