MULTI+: building topology-aware overlay multicast trees

TOPLUS is a lookup service for structured peer-to-peer networks that is based on the hierarchical
grouping of peers according to network IP prefixes. In this paper we present MULTI+, an application-level
multicast protocol for content distribution over a peer-to-peer (P2P) TOPLUS-based network. We use the characteristics
of TOPLUS to design a protocol that allows for every peer to connect to an available peer that is close.
MULTI+ trees also reduce the amount of redundant flows leaving and entering each network, making more effi-
cient bandwidth usage. We use different procedures to measure or calculate the distances among peers, in order
to validate the algorithms in MULTI+.