olemus
OSI kihi 2 liides
= OSI layer 2 interface

ülevaateid
http://www.freeccnastudyguide.com/study-guides/ccna/ch7/7-3-types-switch-ports/

https://community.fs.com/blog/ethernet-switch-port-types-overview.html

http://bradhedlund.com/2007/11/27/switchport-configurations-explained/

http://www.ciscopress.com/articles/article.asp?p=1722561