Bitcoin Compact Block Relay is an Upgrade to Reduce Block’s Propagation Times
The upgrade also has a new feature called high bandwidth mode, in which nodes can request the same block to multiple peers in the network to decrease latency, at the expense of a slightly higher bandwidth usage.
Benchmarks of this new method exhibited that a typical 1MB full block containing 2,500 transactions can be relayed with only 15KB of data, and 86% of those blocks will propagate immediately without needing a second request for any other missing transactions.
Bitcoin Core team said that this new Bitcoin Improvement Proposal will benefit the network as a whole:
Decreasing block propagation times on the p2p network creates a healthier network with a better baseline relay security margin.
BIP152 has already a working implementation, and its currently being tested by the developer community. Future plans to improve BIP152 may include the replacement of TCP protocol with UDP transmission, and using an error correction mechanism to handle dropped packets. All in all, these improvements are always welcomed, as they will help Bitcoin to be more robust.
http://www.newsbtc.com/2016/06/07/compact-block-relay-technique-improve-propagation-times-bitcoin-network/
