ICMP

NAME

ICMP (Internet Control Message Protocol)

SPECIFICATION

J. Postel. Internet Protocol. Request for Comments 792, USC Information Sciences Institute, Marina del Ray, Calif., Sept. 1981. ;

SYNOPSIS

ICMP handles control messages for IP. This implementation is complete in that it handles all possible incoming ICMP requests.

REALM

ICMP is in the CONTROL realm. ICMP sessions may be opened to allow control operations.

PARTICIPANTS

ICMP neither removes nor adds anything to the participant stacks. It passes the participants directly to IP.

CONTROL OPERATIONS

ICMP_ECHO_REQ:

Send an ICMP Echo Request message to the peer host and wait for a reply. The buffer contains the length of the message. Returns 0 if successful, -1 if a timeout occurred. (session only)

Input:

int

Output:

none

CONFIGURATION

name=icmp protocols=ip;

AUTHOR

Clinton Jeffery