Using Netmiko to work with Interfaces

These example scripts use the Netmiko Python library to interact with a device through CLI

These Python scripts leverages Netmiko to:

Create Loopback 103
Retrieve details about Loopback 103
Delete Loopback 103

This script has been tested with Python 3.6, however may work with other versions.

DevNet Sandbox

This script targets the IOS XE DevNet Always On Sandbox that leverages a CSR1000v as a target.

To execute this script against a different device, create a new device dictionary in device_info.py for your device. Then import this new dictionary instead of ios_xe1 in the scripts.

Requirements

Python

netmiko

Getting Started

Clone the Python Examples and change into the directory.

git clone https://github.com/CiscoDevNet/python_code_samples_network
cd netmiko-interface-example

Create and activate a virtualenv

virtualenv venv --python=python3
source venv/bin/activate

Install the requirements
```
pip install -r requirements.text
```

Run the scripts

# Run the get script to retrieve interface
$ python netmiko-get-interface.py

# Output - Interface not there yet...                                                ^
% Invalid input detected at '^' marker.

There was an error, Loopback103 might not exist.

# Run the create script to create interface
$ python netmiko-create-interface.py

# Output - what was configured
The following configuration was sent:
config term
Enter configuration commands, one per line.  End with CNTL/Z.
csr1000v(config)#interface Loopback103
csr1000v(config-if)#description Demo interface by CLI and netmiko
csr1000v(config-if)#ip address 192.168.103.1 255.255.255.0
csr1000v(config-if)#no shut
csr1000v(config-if)#end
csr1000v#

# Run the get script again
$ python netmiko-get-interface.py

# Output - there it is!
Building configuration...

Current configuration : 116 bytes
!
interface Loopback103
 description Demo interface by CLI and netmiko
 ip address 192.168.103.1 255.255.255.0
end

The interface Loopback103 has ip address 192.168.103.1/255.255.255.0

# Run the delete script to remove the interface
$ python netmiko-delete-interface.py

# Output - what was sent to remove the interface
The following configuration was sent:
config term
Enter configuration commands, one per line.  End with CNTL/Z.
csr1000v(config)#no interface Loopback103
csr1000v(config)#end
csr1000v#