<P> The Bangladesh--India border, known locally as the International Border (IB), is an international border running between Bangladesh and India that demarcates the eight divisions of Bangladesh and the Indian states . </P> <P> Bangladesh and India share a 4,156 km (2,582 mi) - long international border, the fifth - longest land border in the world, including 262 km (163 mi) in Assam, 856 km (532 mi) in Tripura, 180 km (110 mi) in Mizoram, 443 km (275 mi) in Meghalaya, and 2,217 km (1,378 mi) in Bengal . The Bangladeshi divisions of Mymensingh, Khulna, Rajshahi, Rangpur, Sylhet and Chittagong are situated along the border . A number of pillars mark the border between the two states . Small demarcated portions of the border are fenced on both sides . The Land Boundary Agreement to simplify the border was ratified by both India and Bangladesh on 7 May 2015 . </P>

What is the border line between india and bangladesh called