I have grouped all previous network related function into a Powershell module.
The use of modules has several advantages, as auto completion and detailed help is available for the functions.

Get-Ping
Get-Nicinfo
Get-Subnet

you can easily import the module (if the .psm1 file is not located in your powershell profile folder, you need to specify the full path):

   1: import-module network

and retrieve some more information:

   1: get-module network

network.psm1 (7.03 kb)