It may have been considered adequate for inter-domain routing earlier, but it seems BGP is becoming less and less ideal for the growing Internet. One paper asserts that domain routing tables have grown six times in size from 1997 to 2005. About 25% of routes continually flap, and other routes take between two to five minutes to converge. A single router misconfiguration can also have a global impact on the Internet's performance.
HLP solves route flapping/convergence problems through a process using information hiding on the route advertisements, and improves isolation of problems. They claim that it reduces the number of route advertisements by a factor of 400.
This protocol demonstrates that certain techniques greatly improve the existing protocol. Yet ISPs are reluctant to deploy an entirely new protocol. Maybe these contributions would be more powerful if they were not in the form of a protocol, but rather an incremental change leading to increased performance.
No comments:
Post a Comment