[python]Convert show ip int brief into structured json data

Cisco IOS commands output is unstructured in the perception of scripting, the output format made sense only to engineers, however if you need to program such output is difficult if the output is not processed. One of the better way to structure the unstructured cisco output is to check each row of the output, then … Continue reading [python]Convert show ip int brief into structured json data

IOS installation for Catalyst 3750 switch

Precaution 1. When adding an additional switch to the current switch stack always check the new switch IOS version first. 2. If the new switch is added to the current stack and if the IOS is mismatched the stack knows and the master of the stack will attempt to synchronize its own IOS with the … Continue reading IOS installation for Catalyst 3750 switch

Spanning Tree Protocol (802.1D)

This protocol prevents bridging loop created by redundant links within switch network. STP calculation will make switch/es block its own port so that the switch path is one straight line and not a loop. This is perhaps the most confusing concept in switch, it is not extremely difficult but many terminologies and the method on … Continue reading Spanning Tree Protocol (802.1D)