.TH X25CLNK 3C .SH NAME x25clnk \- change over a \s-1BX\s+1.25 link .SH SYNOPSIS .B #include <x25lib.h> .PP .B int x25clnk (linkid) .br .B int linkid; .SH DESCRIPTION .I X25clnk\^ is used to change over from the primary to the backup level 2 device associated with link .IR linkid . .I Linkid\^ is the identifier for the link data structure which is used in the operating system. This identifier was set up by the .I x25alnk subroutine call. .SH SEE ALSO ioctl(2), open(2), stat(2), perror(3C), x25alnk(3C), x25hlnk(3C). .br x25pvc(1M), nc(7), vpm(7), x25(7) in the .IR "\s-1UNIX\s+1 System Administrator's Manual " . .br .IR "Operations Systems Network Protocol Specification: BX.25 Issue 2" , Bell Laboratories. .SH DIAGNOSTICS .PD 0 .TP \w'\s-1ELNKDNC\s+1\ \ 'u .SM ELNKNCO network control device \fIopen\fP failed; check \fIerrno\fP. .TP .SM ELNKNCI network control device \fIioctl\fP failed; check \fIerrno\fP. .TP .SM ELNKDS \fIstat\fP of physical device failed; check \fIerrno\fP. .TP .SM ELNKDNC file associated with device name not a character special device. .PD .\" @(#)x25clnk.3c 5.2 of 5/18/82