Automatic network discovery and documentation

NetBrain is a famous software that allows network discovery (and management). Let’s focus now on network discovery and documentation: we want to automatically discover network devices, and how they’re connected, and store everything into a version control repository (GIT/CVS).

Managing NTP on Cisco IOS with Ansible

After installing Ansible (see previous post), it’s now time to manage how to send multiple commands (and check) to Cisco IOS devices. This post will explain a playbook (recipe) for clock and NTP configuration.

Restart DSL connection on a CRC threshold using EEM

My Internet connection is cheap enough and a little bit crappy. Cisco provides Embedded Event Manager (EEM), useful to manage a situation like mine: event manager applet RESTART_ATM event interface name "ATM0" parameter input_errors_crc entry-val 3000 entry-op gt entry-val-is-increment true exit-comb or exit-val 1 exit-op le exit-val-is-increment true exit-time 5 poll-interval 3600 maxrun 10 action 1.

Create email with attachment using BASH

I replaced most of my Bash script with Python but sometimes I still need Bash. The following script requires uuencode and sends an email with attachments using Bash: #!/bin/bash PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin" EMAIL_OK="dainese@example.