Because Chord is a typical distributed structured peer-to-peer (P2P) system based on overlay network, the distance between two adjacent peers may be very far on IP network, and the network access speed is greatly reduced.

• Chord是基于覆盖网的典型分布式结构化P2P(Peer-to-peer)系统；其相邻节点在IP Net-work上可能相距很远；从而导致网络访问速度大大降低.