Python For Network Engineer 3

Python For Network Engineers 3

(1) Backup switch configurations

Ubuntu-1

• Create and modify “getconfigs.py” script (Figure 1)
  • Add comments
  • Use “strip()” to removes any leading (spaces at the beginning) and trailing (spaces at the end) characters (space is the default leading character to remove)
  • Use “read_all” to get all the written output
  • Use “w” to enable read write
    • > open(“switch” + HOST, “w”)
    • > “write” and “close”
• Run the script (Figure 2)
  • Use “ls” to see the just now created files
• Read the running config files (Figure 3)
  • Use “less” for easy navigation

(2) Jupyter Python Clients (3.0 and 2.7)

Lab Overview

• Jupyter: an open-source web application that allows you to create and shares codes, and etc.
  • Jupyter 2.7 (Figure 1)
  • Jupyter 3.0 (Figure 2)
• Network Topology (Figure 3)
  • Initialize the Router and Jupyter clients (IP addressing, and Router telnet access)

Jupyter Client

• Create new notebook name “Telnet1” (Figure 4)
  • Paste the python script
  • Run the script in the section “In [1]”
  • It will print the result (Figure 5)
• Navigate in Jupyter
  • New notebook (Figure 6)
  • Open saved notebook (Figure 7)
  • Saved noteboks (Figure 8)