The Internet Link protocol or IL is a connection-based transport layer protocol designed at Bell Labs originally as part of the Plan 9 operating system and is used to carry 9P. It is assigned the Internet Protocol number of 40. It is similar to TCP but much simpler.
Its main features are:
- Reliable datagram service
- In-sequence delivery
- Internetworking using IP
- Low complexity, high performance
- Adaptive timeouts
As of the Fourth Edition of Plan 9, 2003, IL is deprecated in favor of TCP/IP because it doesn't handle long-distance connections well.[1]
See also
- Fast Local Internet Protocol
References
- ^ "Plan 9 — Fourth Edition Release Notes". Lucent Technologies. June 2003. Retrieved August 3, 2018.
We are phasing out the IL protocol since it doesn’t handle long-distance connections well (and long-distance networks don’t handle it well, either). IL is still used by fs(4) but TCP has become the standard protocol for all other services.
External links
- Dave Presotto; Phil Winterbottom. "The IL protocol".—The original paper describing IL