The Border Incursions of 2112 was a conflict between the Andorians and the Vulcans that took place along the border of Andorian and Vulcan space.
Jonathan Archer received a briefing on the Border Incursions of 2112 from the Vulcan High Command, prior to his first diplomatic negotiation between the two species on Paan Mokar in 2152. (ENT: "Cease Fire")