2-genie-intro.py

from genie.conf import Genie
from pprint import pprint

# we define a function to get all interface counters for a device
def get_interface_counters(dev):
    """
    returns parsed and normalized interface counters
    """
    # Device must be connected so that a lookup can be performed
    if not dev.is_connected():
        dev.connect()

    # learn and parse data for the interface model of dev,
    # and return structured data
    intf = dev.learn('interface')
    return intf.info

# define where the testbed definition file is
testbed = '/pyats/demos/default_testbed.yaml'

# load the Genie testbed from the pyATS one
testbed = Genie.init(testbed)

# select a device from the testbed
csr = testbed.devices['csr1000v-1']

# call our function to obtain counters for all interfaces from that device
csr_interface_details = get_interface_counters(csr)
pprint(csr_interface_details)

# select a different device from the testbed, with a different CLI
nx = testbed.devices['nx-osv-1']

# use THE SAME function to obtain the counters for all interfaces from that device
nx_interface_details = get_interface_counters(nx)
pprint(nx_interface_details)

# now we will look for CRC error in ANY interface from ANY device... 
all_interfaces = dict()
all_interfaces['csr'] = csr_interface_details
all_interfaces['nxos'] = nx_interface_details

for device, interface_details in all_interfaces.items():
    for interface, details in interface_details.items():
        counters = details.get('counters')
        if counters:
            if 'in_crc_errors' in counters:
                counters = details['counters']
                crc = counters['in_crc_errors']
                print("Device: {} Interface: {} CRC Errors: {}".format(device, interface, crc))