Existing Network Architectures like DSR and AODV cannot be performed in environments where end-to-end path is not stable due to network partitioned, intermittent connectivity and node mobility. A delay-tolerant network is a network designed so that temporary or intermittent communication problems and limitations have the least possible adverse impact. In Order to perform data delivery in such operational environment (e. g. deep space, under water) researchers have proposed store-carry- and- forward protocol: A node store message in its buffer and carry until a suitable transmission opportunity arises and whenever buffer overflow buffer management policy play a important role in Delay tolerant Network The function of buffer management policy is minimize the Drop and maximize the Delivery Rate. This paper provides a comparative review of different buffer management policy and proposed buffer management policy.

Store-carry-forward Buffer Management Policies Delay Tolerant Network