The IP layer, in turn, provides services used by the Internet Control Message Protocol (ICMP) and Transmission Control Protocol (TCP).
反过来，ip层又提供由网际控制报文协议(ICMP)和传输控制协议(TCP)使用的服务。
2
Stream ControlTransmission protocol (SCTP) is a new transport layer protocol added to the 2.6 kernel.
流控制传输协议(SCTP)是2.6内核中增加的一个新的传输层协议。
3
Recall that the Internet protocol (IP) is the core network layer protocol that sits below the transport protocol (most commonly the TransmissionControl protocol, or TCP).