Border crossings with Vietnam

There are at least six border crossings that can be used by foreigners. These include:

Donsavanh - Lao Bao - to/from Savannakhet
Keo Nua Pass
Lak Sao - to/from Khammouan Province
Nam Can - to/from Plain of Jars
Na Meo - to/from Sam Neua
Tay Trang - to/from Muang Khua and Nong Khiaw
Bo Y (nearest town on Vietnamese side being Ngoc Hoi and on Lao side Attapeu)

~Info courtesy of Wikitravel~