about nlmLogVariableTable and nlmLogVariable*Val OIDs

Hi, 


I've successfully set snmpd and snmptrapd to work together using
NOTIFICATION-LOG-MIB support : 

$ snmptrap -e 0x8000000001020304 localhost 0 linkUp.0 ifIndex i 4
ifAdminStatus i 1 ifOperStatus i 2

/----( /var/log/syslog )----
...
Sep 30 16:03:04 localhost snmptrapd[26264]: 2009-09-30 16:03:04
localhost [UDP: [127.0.0.1]:60500]: DISMAN-EVENT-MIB::sysUpTimeInstance
= Timeticks: (0) 0:00:00.00^ISNMPv2-MIB::snmpTrapOID.0 = OID:
IF-MIB::linkUp.0^IIF-MIB::ifIndex = INTEGER: 4^IIF-MIB::ifAdminStatus =
INTEGER: up(1)^IIF-MIB::ifOperStatus = INTEGER: down(2) 
...
\---8<---8<---8<---8<---8<---

And when I'm walking nlmLogTable : 

$ snmpwalk -n snmptrapd localhost nlmLogTable
NOTIFICATION-LOG-MIB::nlmLogTime."default".1 = Timeticks: (417)
0:00:04.17
NOTIFICATION-LOG-MIB::nlmLogDateAndTime."default".1 = STRING:
2009-9-30,16:3:4.0,+2:0
NOTIFICATION-LOG-MIB::nlmLogEngineID."default".1 = Hex-STRING: 80 00 00
00 01 02 03 04 
NOTIFICATION-LOG-MIB::nlmLogEngineTAddress."default".1 = Hex-STRING: 01
00 00 7F 54 EC 
NOTIFICATION-LOG-MIB::nlmLogEngineTDomain."default".1 = OID:
SNMPv2-TM::snmpUDPDomain
NOTIFICATION-LOG-MIB::nlmLogContextEngineID."default".1 = Hex-STRING: 80
00 1F 88 80 9C 94 EA 40 18 65 C3 4A 
NOTIFICATION-LOG-MIB::nlmLogContextName."default".1 = STRING: 
NOTIFICATION-LOG-MIB::nlmLogNotificationID."default".1 = OID:
IF-MIB::linkUp.0

nlmLogVariableIndex is defined as an index then as a colum.
This attached patch remove the second declaration.

After applying this patch : 

$ snmpwalk -n snmptrapd localhost nlmLog
NOTIFICATION-LOG-MIB::nlmLogTime."default".1 = Timeticks: (5896)
0:00:58.96
NOTIFICATION-LOG-MIB::nlmLogDateAndTime."default".1 = STRING:
2009-9-30,18:30:54.0,+2:0
NOTIFICATION-LOG-MIB::nlmLogEngineID."default".1 = Hex-STRING: 80 00 1F
88 80 43 D4 05 45 76 36 C2 4A 
NOTIFICATION-LOG-MIB::nlmLogEngineTAddress."default".1 = Hex-STRING: 01
00 00 7F 45 92 
NOTIFICATION-LOG-MIB::nlmLogEngineTDomain."default".1 = OID:
SNMPv2-TM::snmpUDPDomain
NOTIFICATION-LOG-MIB::nlmLogContextEngineID."default".1 = Hex-STRING: 80
00 1F 88 80 43 D4 05 45 76 36 C2 4A 
NOTIFICATION-LOG-MIB::nlmLogContextName."default".1 = STRING: 
NOTIFICATION-LOG-MIB::nlmLogNotificationID."default".1 = OID:
IF-MIB::linkUp.0
NOTIFICATION-LOG-MIB::nlmLogVariableID."default".1.1 = OID:
DISMAN-EVENT-MIB::sysUpTimeInstance
NOTIFICATION-LOG-MIB::nlmLogVariableID."default".1.2 = OID:
IF-MIB::ifIndex
NOTIFICATION-LOG-MIB::nlmLogVariableID."default".1.3 = OID:
IF-MIB::ifAdminStatus
NOTIFICATION-LOG-MIB::nlmLogVariableID."default".1.4 = OID:
IF-MIB::ifOperStatus
NOTIFICATION-LOG-MIB::nlmLogVariableValueType."default".1.1 = INTEGER:
timeTicks(3)
NOTIFICATION-LOG-MIB::nlmLogVariableValueType."default".1.2 = INTEGER:
integer32(4)
NOTIFICATION-LOG-MIB::nlmLogVariableValueType."default".1.3 = INTEGER:
integer32(4)
NOTIFICATION-LOG-MIB::nlmLogVariableValueType."default".1.4 = INTEGER:
integer32(4)

I'm getting more OID in nlmLogVariableTable : 

 - nlmLogVariableID ; 
 - nlmLogVariableValueType.

But, no OID like : 

 - nlmLogVariableTimeTicksVal (6) ; 
 - nlmLogVariableInteger32Val (7) ; 
 - nlmLogVariableOctetStringVal (8).

Be enabling DEBUG mode using notification_mog, I'm getting theses
following messages whan receiving incoming INFORM : 

Oct 22 09:39:28 admin4 snmptrapd[3288]: 2009-10-22 09:39:28 localhost
[UDP: [127.0.0.1]:52894]: DISMAN-EVENT-MIB::sysUpTimeInstance =
Timeticks: (0) 0:00:00.00^ISNMPv2-MIB::snmpTrapOID.0 = OID:
IF-MIB::linkUp.0^IIF-MIB::ifIndex = INTEGER: 4^IIF-MIB::ifDescr =
STRING: eth0^IIF-MIB::ifOperStatus = INTEGER: testing(3) 
notification_log: logging something 
notification_log: adding a row to the variables table. Name: 6. Type:
67. Value: 165287512. Len: 4 
notification_log: adding a row to the variables table. Name: 7. Type: 2.
Value: 165288696. Len: 4 
notification_log: adding a row to the variables table. Name: 8. Type: 4.
Value: 165289288. Len: 4 
notification_log: adding a row to the variables table. Name: 7. Type: 2.
Value: 165289880. Len: 4 

You need to modify again notification_log.c : 

---
net-snmp-5.4.1.orig/agent/mibgroup/notification-log-mib/notification_log.c	2009-10-06 10:56:34.000000000 +0200
+++
net-snmp-5.4.1/agent/mibgroup/notification-log-mib/notification_log.c
2009-10-21 15:27:22.000000000 +0200
@@ -697,7 +688,8 @@
             netsnmp_set_row_column(myrow, col, vptr->type,
                                    vptr->val.string, vptr->val_len);
             DEBUGMSGTL(("notification_log",
-                        "adding a row to the variables table\n"));
+                        "adding a row to the variables table. Name: %d.
Type: %d. Value: %d. Len: %d\n",
+					   	col, vptr->type, vptr->val.string, vptr->val_len));
             netsnmp_table_dataset_add_row(nlmLogVarTable, myrow);
         }
     }

Why any nlmLogVariable*Val OIDs are empty ?


Regards,

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--- net-snmp-5.4.1.orig/agent/mibgroup/notification-log-mib/notification_log.c	2007-03-13 00:09:39.000000000 +0100
+++ net-snmp-5.4.1/agent/mibgroup/notification-log-mib/notification_log.c	2009-09-30 18:01:36.000000000 +0200
@@ -188,15 +188,6 @@
     netsnmp_table_dataset_add_index(table_set, ASN_UNSIGNED);
 
     /*
-     * adding column nlmLogVariableIndex of type ASN_UNSIGNED and access
-     * of NoAccess 
-     */
-    DEBUGMSGTL(("initialize_table_nlmLogVariableTable",
-                "adding column nlmLogVariableIndex (#1) of type ASN_UNSIGNED to table nlmLogVariableTable\n"));
-    netsnmp_table_set_add_default_row(table_set,
-                                      COLUMN_NLMLOGVARIABLEINDEX,
-                                      ASN_UNSIGNED, 0, NULL, 0);
-    /*
      * adding column nlmLogVariableID of type ASN_OBJECT_ID and access of
      * ReadOnly 
      */