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libsmi(3) SMI Management Information Library libsmi(3)


libsmi - library to access SMI management information


This library contains functions that allow access to SMI management information stored in repositories that are managed by libsmi, currently directories containing SMIv1/v2 and SMIng MIB module files.

The libsmi API is defined in smi.h. Functions are documented in smi_config(3), smi_module(3), smi_node(3), smi_type(3), and smi_macro(3).

The purpose of libsmi is to separate the weird parsing and handling of MIB modules from management applications. MIB modules conforming to SMIv1, SMIv2 and SMIng - a new language for management information, developed at the Technical University of Braunschweig, Germany - can be handled by libsmi.

NOTE: SMIng support in the current release of libsmi is neither stable nor representing the work done in the IETF SMING working group. It is based research efforts at TU Braunschweig and within the IRTF in 1999-2000.


#include <stdio.h>
#include <string.h>
#include <smi.h>

int main(int argc, char *argv[]) {
SmiNode *smiNode;
int oidlen, first = 1;

if (argc != 2) {
fprintf(stderr, "Usage: smisubtree oid\n");


for((smiNode = smiGetNode(NULL, argv[1])) &&
(oidlen = smiNode->oidlen);
smiNode && (first || smiNode->oidlen > oidlen);
smiNode = smiGetNextNode(smiNode, SMI_NODEKIND_ANY),
first = 0) {

(smiNode->oidlen - oidlen + 1) * 2, " ",


exit(0); }


/usr/include/smi.h    SMI library header file


RFCs 2578-2580 specify the SMIv2 standard [STD 58]. The (obsolete) SMIng specification has been a working document of the IRTF Network Management Working Group (NMRG) (draft-irtf-nmrg-sming-02).

smi.h, smi_config(3), smi_module(3), smi_node(3), smi_type(3), smi_macro(3),


(C) 1999-2001 Frank Strauss, TU Braunschweig, Germany <>

August 16, 2001 IBR