IL Protocol

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The five layer TCP/IP model
5. Application layer

DHCPDNSFTPHTTPIMAP4IRCNNTPXMPPMIMEPOP3SIPSMTPSNMPSSHTELNETBGPRPCRTPRTCPTLS/SSLSDPSOAPL2TPPPTP

4. Transport layer

TCPUDPDCCPSCTPGTP

3. Network layer

IP (IPv4IPv6) • ICMPIGMPRSVPIPsec

2. Data link layer

ATMDTMEthernetFDDIFrame RelayGPRSPPPARPRARP

1. Physical layer

Ethernet physical layerISDNModemsPLCSONET/SDHG.709Wi-Fi

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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

[edit] External links

  • Dave Presotto; Phil Winterbottom. The IL protocol (HTML).—The original paper describing IL


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