Hi. I'm struggling with this for 3 days now...
I do not understand why, but when I try to get a IPAddress from a table inside
my MIB, it always gets timeout and all other types work. I tried with SNMPb and
the GET works just fine.
With snmpget command does not work either.
Tried with version 5.8 and 5.8.1.pre2
Below, I leave my C client code and my MIB.
############################## CLIENT CODE###################################
netsnmp_session *sess_handle = setup_snmp_session(SNMP_VERSION_2c,(unsigned
char *)("public"),(unsigned char *)ip);
if(sess_handle != NULL)
{
int count=1;
netsnmp_pdu *pdu;
netsnmp_pdu *response;
netsnmp_variable_list *vars;
oid anOID[MAX_OID_LEN];
size_t anOID_len;
int status;
pdu = snmp_pdu_create(SNMP_MSG_GET);
anOID_len = MAX_OID_LEN;
if (!get_node(oidname, anOID, &anOID_len))
{
snmp_perror(oidname);
return 0;
}
oid o[] = { 1,3,6,1,4,1,26364,2,1,1,1,4,0};
snmp_add_null_var(pdu, o, OID_LENGTH(o));
//snmp_add_null_var(pdu, anOID, anOID_len);
status = snmp_synch_response(sess_handle, pdu, &response);
/*
* Process the response.
*/
if (status == STAT_SUCCESS )
{
if(response->errstat == SNMP_ERR_NOERROR)
{
/* manipuate the information ourselves */
for(vars = response->variables; vars; vars =
vars->next_variable)
{
fprint_variable(stderr, vars->name, vars->name_length,
vars);
if (vars->type == ASN_IPADDRESS)
{
char auxIp[INET_ADDRSTRLEN];
memset(auxIp, 0, sizeof(auxIp));
inet_ntop( AF_INET, &(vars->val.counter64->high),
auxIp, sizeof(auxIp));
fprintf(stderr,"%s\n", auxIp);
}
else
{
if (vars->type == ASN_INTEGER)
{
fprintf(stderr,"%d\n", vars->val.counter64->high);
}
else if (vars->type == ASN_OCTET_STR)
{
fprintf(stderr,"%s\n",vars->val.string);
}
else if (vars->type == ASN_UNSIGNED)
{
fprintf(stderr,"%lu\n", vars->val.counter64->high);
}
else
{
fprintf(stderr,"value #%d is NOT a integer!
Ack!\n", count++);
}
}
}
}
else {
/*
* error in response, print it
*/
if (response->errstat == SNMP_ERR_NOSUCHNAME) {
fprintf(stderr,"End of MIB.\n");
} else {
fprintf(stderr, "Error in packet.\nReason: %s\n",
snmp_errstring(response->errstat));
if (response->errindex != 0) {
fprintf(stderr, "Failed object: ");
for (count = 1, vars = response->variables;
vars && (count != response->errindex);
vars = vars->next_variable, count++)
/*EMPTY*/;
if (vars)
fprint_objid(stderr, vars->name,
vars->name_length);
fprintf(stderr, "\n");
}
}
}
} else {
/*
* FAILURE: print what went wrong!
*/
if (status == STAT_SUCCESS)
{
fprintf(stderr, "Error in packet\nReason:
%s\n",snmp_errstring(response->errstat));
}
else if (status == STAT_TIMEOUT)
{
fprintf(stderr, "Timeout: No response from %s.\n",
sess_handle->peername);
}
else
{
snmp_sess_perror("snmpdemoapp", sess_handle);
}
}
}
snmp_close(sess_handle);
return 0;
########MIB ##########################
connectionTable OBJECT-TYPE
SYNTAX SEQUENCE OF ConnectionEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table with the Connections available to iccs7 application"
::= { network 1 }
connectionEntry OBJECT-TYPE
SYNTAX ConnectionEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Connection Information"
INDEX { connectionIndex }
::= { connectionTable 1 }
ConnectionEntry ::= SEQUENCE {
connectionIndex Unsigned32,
connectionName OCTET STRING,
connectionMethod OCTET STRING,
connectionIpAddress IpAddress,
connectionNetmask Unsigned32,
connectionGatewayAddress IpAddress
}
connectionIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Connection Index"
::= { connectionEntry 1 }
connectionName OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..64))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Connection Name"
::= { connectionEntry 2 }
connectionMethod OBJECT-TYPE
SYNTAX OCTET STRING
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The method to obtain IP address"
::= { connectionEntry 3 }
connectionIpAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"IP Address Connection"
::= { connectionEntry 4 }
connectionNetmask OBJECT-TYPE
SYNTAX Unsigned32 (0..32)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"IP Netmask"
::= { connectionEntry 5 }
connectionGatewayAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Gateway Address"
::= { connectionEntry 6 }
Thank you
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