Output specific text from delimited string

Question

I have a script that connects to a Cisco switch and pulls the mac address table. I want to pull out and export only the mac address from the larger output.

Here is an example output:

123 0000.0000.0000 DYNAMIC Gi1/0/1

I want to export only the mac address portion to a file so that I can then import that into another script. Right now I have to do this manually.