Netmiko Multiple Devices
Previous post already talking about network automation using netmiko, but on that post only show how to automate configuration on the single device. In Addition, this post will be covering how to automate configuration using netmiko multiple devices in sequence. This post will using the same network topology as previous, please refer to picture as below:
On this automation showing how to display and do the configuration. The sample script will be running on IOS and IOS-XE devices, R6, R7, CSR3, and CSR2. This automation script will add new interface loopback 10 with description netmiko-sequence, and display the all interface IP Address on each routers.
The first thing to do is declare all the devices, using dictionary. Then, create a list that consist all of the devices, and make the iteration based on the previous list. To get the detail information about duration of the script executed, this post using datetime module.
netmiko-sequence.py
from netmiko import ConnectHandler
from datetime import datetime
CSR2 = {
'device_type': 'cisco_xe',
'ip': '172.16.1.2',
'username': 'cisco',
'password': 'cisco',
'secret': 'cisco'
}
CSR3 = {
'device_type': 'cisco_xe',
'ip': '172.16.1.3',
'username': 'cisco',
'password': 'cisco',
'secret': 'cisco'
}
R6 = {
'device_type': 'cisco_ios',
'ip': '172.16.1.6',
'username': 'cisco',
'password': 'cisco',
'secret': 'cisco'
}
R7 = {
'device_type': 'cisco_ios',
'ip': '172.16.1.7',
'username': 'cisco',
'password': 'cisco',
'secret': 'cisco'
}
all_devices = [CSR2, CSR3, R6, R7]
start_time = datetime.now()
a = 0
for device in all_devices:
net_connect = ConnectHandler (**device)
net_connect.enable()
print ("Before Configuration " + all_devices[a]["ip"])
output = net_connect.send_command('show ip int brief')
print ("##############################################")
print (output)
config_commands = ['int loop 10', 'ip address 1.1.1.1 255.255.255.255']
config_commands1 = ['int loop 10', 'description netmiko-sequence']
output = net_connect.send_config_set(config_commands)
output = net_connect.send_config_set(config_commands1)
print ("##############################################")
print ("Creating New Loopbak 10 " + (all_devices[a]["ip"]))
print ("##############################################")
print ("After Configuration " + all_devices[a]["ip"])
output2 = net_connect.send_command('show int description')
output3 = net_connect.send_command('show ip int brief')
print ("##############################################")
print ("Show Interface Description")
print (output2)
print ("Show IP Interface Brief")
print (output3)
print ("##############################################")
a = a + 1
end_time = datetime.now()
print('Duration: {}'.format(end_time - start_time))
Result of Netmiko Multiple Devices
root@Server:/home/admin/devnet# python3 netmiko-sequence.py
Before Configuration 172.16.1.2
##############################################
Interface IP-Address OK? Method Status Protocol
GigabitEthernet1 10.172.4.2 YES manual up up
GigabitEthernet2 10.172.5.2 YES manual up up
GigabitEthernet3 unassigned YES unset administratively down down
GigabitEthernet4 unassigned YES unset administratively down down
GigabitEthernet5 unassigned YES unset administratively down down
Loopback0 172.16.1.2 YES manual up up
##############################################
Creating New Loopbak 10 172.16.1.2
##############################################
After Configuration 172.16.1.2
##############################################
Show Interface Description
Interface Status Protocol Description
Gi1 up up to_CSR3
Gi2 up up to XRV5
Gi3 admin down down
Gi4 admin down down
Gi5 admin down down
Lo0 up up
Lo10 up up netmiko-sequence
Show IP Interface Brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet1 10.172.4.2 YES manual up up
GigabitEthernet2 10.172.5.2 YES manual up up
GigabitEthernet3 unassigned YES unset administratively down down
GigabitEthernet4 unassigned YES unset administratively down down
GigabitEthernet5 unassigned YES unset administratively down down
Loopback0 172.16.1.2 YES manual up up
Loopback10 1.1.1.1 YES manual up up
##############################################
Before Configuration 172.16.1.3
##############################################
Interface IP-Address OK? Method Status Protocol
GigabitEthernet1 10.172.4.1 YES manual up up
GigabitEthernet2 10.172.3.1 YES manual up up
GigabitEthernet3 unassigned YES unset administratively down down
GigabitEthernet4 unassigned YES unset administratively down down
GigabitEthernet5 unassigned YES unset administratively down down
Loopback0 172.16.1.3 YES manual up up
##############################################
Creating New Loopbak 10 172.16.1.3
##############################################
After Configuration 172.16.1.3
##############################################
Show Interface Description
Interface Status Protocol Description
Gi1 up up to_CSR2
Gi2 up up to_R7
Gi3 admin down down
Gi4 admin down down
Gi5 admin down down
Lo0 up up
Lo10 up up netmiko-sequence
Show IP Interface Brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet1 10.172.4.1 YES manual up up
GigabitEthernet2 10.172.3.1 YES manual up up
GigabitEthernet3 unassigned YES unset administratively down down
GigabitEthernet4 unassigned YES unset administratively down down
GigabitEthernet5 unassigned YES unset administratively down down
Loopback0 172.16.1.3 YES manual up up
Loopback10 1.1.1.1 YES manual up up
##############################################
Before Configuration 172.16.1.6
##############################################
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 10.172.1.2 YES manual up up
Ethernet0/1 10.172.2.1 YES manual up up
Ethernet0/2 unassigned YES TFTP up up
Ethernet0/3 unassigned YES TFTP up up
Loopback0 172.16.1.6 YES manual up up
##############################################
Creating New Loopbak 10 172.16.1.6
##############################################
After Configuration 172.16.1.6
##############################################
Show Interface Description
Interface Status Protocol Description
Et0/0 up up to_XRV4
Et0/1 up up to_R7
Et0/2 up up
Et0/3 up up
Lo0 up up
Lo10 up up netmiko-sequence
Show IP Interface Brief
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 10.172.1.2 YES manual up up
Ethernet0/1 10.172.2.1 YES manual up up
Ethernet0/2 unassigned YES TFTP up up
Ethernet0/3 unassigned YES TFTP up up
Loopback0 172.16.1.6 YES manual up up
Loopback10 1.1.1.1 YES manual up up
##############################################
Before Configuration 172.16.1.7
##############################################
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 unassigned YES TFTP up up
Ethernet0/1 10.172.2.2 YES manual up up
Ethernet0/2 10.172.3.2 YES manual up up
Ethernet0/3 unassigned YES TFTP up up
Loopback0 172.16.1.7 YES manual up up
##############################################
Creating New Loopbak 10 172.16.1.7
##############################################
After Configuration 172.16.1.7
##############################################
Show Interface Description
Interface Status Protocol Description
Et0/0 up up
Et0/1 up up to_R6
Et0/2 up up to_CSR3
Et0/3 up up
Lo0 up up
Lo10 up up netmiko-sequence
Show IP Interface Brief
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 unassigned YES TFTP up up
Ethernet0/1 10.172.2.2 YES manual up up
Ethernet0/2 10.172.3.2 YES manual up up
Ethernet0/3 unassigned YES TFTP up up
Loopback0 172.16.1.7 YES manual up up
Loopback10 1.1.1.1 YES manual up up
##############################################
Duration: 0:00:35.879748
root@Server:/home/admin/devnet#
After executing netmiko script, there is new Loopback 10 interfaces along with the interface description. Using datetime module, the time of execution using netmiko multiple devices in sequences can be calculated and shown as 0:00:35.879. The next post will be covering configuration of multiple devices in simultaneously.