A HYBRID way to get OSPF neighbors STATE : IPv4 and/or IPv6

[cherifi.m85]

I recently contributed with 06 Hybrid get APIs (IPv4 and IPv6) for EIGRP. I'm happy to be the first to introduce the get.py file for Cisco pyATS, what a pleasure.

As I indicated in my previous blog, the idea is to exploit two essential points:

• The resemblance between the commands
• The power of Python f-string where we can introduce a condition

Now, I will give you a little demonstration with a simple hybrid function which aims to retrieve information from OSPF neighbors with Netmiko. This is a small modification of the script introduced in a previous blog, here is the link:

what is the status of the ospf neighbors of your devices 

In short, here is the Hybrid_OSPF_Neighbors.py script. Very simple, isn't it?!

def hybrid_neighbors(device, ip='ipv4'):
    # Connect to the device via SSH
    net_connect = ConnectHandler(**device)
    # Retrieve the result of "show ip/ipv6 ospf neighbor" command
    output = net_connect.send_command(f"show {'ipv6' if ip!='ipv4' else 'ip'} ospf neighbor")
    # Display the result
    print(output)
    # End the SSH session for the device
    net_connect.disconnect()
    return print(f"This is {ip} data")

if __name__ == "__main__":
    # Import the ConnectHandler Function to create an Object for R1
    from netmiko import ConnectHandler
    # Parameters of R1
    password = "cisco"
    R1 = {
    "device_type": "cisco_ios",
    "host": "192.168.1.251",
    "username": "Admin",
    "password": password,
    }
    hybrid_neighbors(R1)

As you will notice, by default the hybrid_neighbors() function allows you to retrieve by default the state of OSPF neighbors for IPv4, to modify in case of IPv6 in the last line of the script hybrid_neighbors(R1, 'ipv6').

The difference is in the line: output = net_connect.send_command(f"show {'ipv6' if ip!='ipv4' else 'ip'} ospf neighbor")

Before running the script, here is the output of the two commands:

For IPv4:

For IPv6:

Now let's see if our script will give us the same outputs

Case IPv4 (By default):

Case IP6:

It's the same result!

Note: The return method allows us to indicate whether the case is 'ipv4' or 'ipv6' .

Here is the link to the Github repository: https://github.com/cherifimehdi/Hybrid_OSPF_Neighbors 

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Thank you so much