'How to parse rendered cisco configuration to Large network devices through netmiko or other means
Pls I am totally a newbie in this python programming. I have been struggling to push rendered configured to the 64 Routers in GNS3 but has not succeeded. I will appreciate your help here.
I succeeded in rendering the config and can print it out on the screen.
I used Yaml template and jinja2 template here
Do not know how to push rendered result to the devices configured on GNS3.
Python code used:
import yaml
from jinja2 import Template
from netmiko import Netmiko
import netmiko
import json
from netmiko import ConnectHandler
from getpass import getpass
username = input('Enter your SSH username: ')
password = getpass()
#read your yaml file
with open("Just4testing8.yml") as file:
devices = yaml.safe_load(file)
#read your jinja template file
with open("Just4testing7.j2") as file:
template = Template(file.read())
for device in devices["devices"]:
final = template.render(
device=device["name"],
interfaces=device["interfaces"],
bgpasn=device["bgpasn"],
bgp_id=device["bgp_id"],
bgp_neighbors=device["bgp_neighbors"])
print(final)
Solution 1:[1]
It looks like your missing your netmiko code. I think this is what you're looking for.
Here is a basic example using a list for the commands, I would assume that you would parse your render configuration into that. I dont know anything about Render but looks like a dictionary so you could create a list the values.
** SAMPLE -- Not tested**
from netmiko import ConnectHandler
from getpass import getpass
password = getpass()
cisco1 = {
"device_type": "cisco_ios",
"host": "192.168.255.1",
"username": "user",
"password": password,
}
cisco2 = {
"device_type": "cisco_ios",
"host": "192.168.1.1",
"username": "user",
"password": password,
}
devices = [cisco1, cisco2]
# you can use a your render here to build your list.
commands = ["cmd1","cmd2","cmd3"]
for device in devices:
net_connect = ConnectHandler(**device)
for cmd in commands:
output = net_connect.send_command(cmd) # works with show commands only
print(output) # Save to a file or append to to list/dictionary for use later.
net_connect.disconnect()
Solution 2:[2]
You can also use python TTP template to render your data and convert it to json format. Please find a sample below:
Text from BGP Summary output:
*A:SR7-2# show router bgp summary
===============================================================================
BGP Router ID:10.10.10.1 AS:65000 Local AS:65000
===============================================================================
BGP Admin State : Up BGP Oper State : Up
Total Peer Groups : 1 Total Peers : 1
Total VPN Peer Groups : 0 Total VPN Peers : 0
Total BGP Paths : 11 Total Path Memory : 3720
Total IPv4 Remote Rts : 0 Total IPv4 Rem. Active Rts : 0
Total IPv6 Remote Rts : 0 Total IPv6 Rem. Active Rts : 0
Total IPv4 Backup Rts : 0 Total IPv6 Backup Rts : 0
Total LblIpv4 Rem Rts : 0 Total LblIpv4 Rem. Act Rts : 0
Total LblIpv6 Rem Rts : 0 Total LblIpv6 Rem. Act Rts : 0
Total LblIpv4 Bkp Rts : 0 Total LblIpv6 Bkp Rts : 0
Total Supressed Rts : 0 Total Hist. Rts : 0
Total Decay Rts : 0
Total VPN-IPv4 Rem. Rts : 1 Total VPN-IPv4 Rem. Act. Rts: 1
Total VPN-IPv6 Rem. Rts : 0 Total VPN-IPv6 Rem. Act. Rts: 0
Total VPN-IPv4 Bkup Rts : 0 Total VPN-IPv6 Bkup Rts : 0
Total VPN Local Rts : 2 Total VPN Supp. Rts : 0
Total VPN Hist. Rts : 0 Total VPN Decay Rts : 0
Total MVPN-IPv4 Rem Rts : 0 Total MVPN-IPv4 Rem Act Rts : 0
Total MVPN-IPv6 Rem Rts : 0 Total MVPN-IPv6 Rem Act Rts : 0
Total MDT-SAFI Rem Rts : 0 Total MDT-SAFI Rem Act Rts : 0
Total McIPv4 Remote Rts : 0 Total McIPv4 Rem. Active Rts: 0
Total McIPv6 Remote Rts : 0 Total McIPv6 Rem. Active Rts: 0
Total McVpnIPv4 Rem Rts : 0 Total McVpnIPv4 Rem Act Rts : 0
Total McVpnIPv6 Rem Rts : 0 Total McVpnIPv6 Rem Act Rts : 0
Total EVPN Rem Rts : 0 Total EVPN Rem Act Rts : 0
Total L2-VPN Rem. Rts : 0 Total L2VPN Rem. Act. Rts : 0
Total MSPW Rem Rts : 0 Total MSPW Rem Act Rts : 0
Total RouteTgt Rem Rts : 0 Total RouteTgt Rem Act Rts : 0
Total FlowIpv4 Rem Rts : 0 Total FlowIpv4 Rem Act Rts : 0
Total FlowIpv6 Rem Rts : 0 Total FlowIpv6 Rem Act Rts : 0
Total Link State Rem Rts: 0 Total Link State Rem Act Rts: 0
Total SrPlcyIpv4 Rem Rts: 0 Total SrPlcyIpv4 Rem Act Rts: 0
===============================================================================
BGP Summary
===============================================================================
Legend : D - Dynamic Neighbor
===============================================================================
Neighbor
Description
AS PktRcvd InQ Up/Down State|Rcv/Act/Sent (Addr Family)
PktSent OutQ
-------------------------------------------------------------------------------
10.10.10.121
65000 5588 0 01d22h31m 0/0/0 (IPv4)
5590 0 1/1/1 (VpnIPv4)
10.10.10.125
65000 1111 0 01d11h11m 0/0/0 (IPv4)
-------------------------------------------------------------------------------
The code to parse above:
from pprint import pprint
from ttp import ttp
import json
import time
with open("showRouterBgpSummary.txt") as f:
data_to_parse = f.read()
ttp_template = """
<group name="BGP_Summary">
{{Neighbor|IP}}
{{AS}} {{PktRcvd}} 0 {{date}} 0/0/0 ({{Connection_Type}})
{{PktSent}} 0 1/1/1 ({{Connection_Type2}})
</group>
"""
parser = ttp(data=data_to_parse, template=ttp_template)
parser.parse()
# print result in JSON format
results = parser.result(format='json')[0]
# print(results)
#converting str to json.
result = json.loads(results)
# print(result)
'''
RESULT:
[{'BGP_Summary': [{'AS': '65000', 'Connection_Type': 'IPv4', 'Connection_Type2': 'VpnIPv4', 'Neighbor': '10.10.10.121', 'PktRcvd': '5588', 'PktSent': '5590', 'date': '01d22h31m'}, {'AS': '65000', 'Connection_Type': 'IPv4', 'Neighbor': '10.10.10.125', 'PktRcvd': '1111', 'date': '01d11h11m'}]}]
'''
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Dharman |
| Solution 2 | Baris Ozensel |