Re: [nv-l] mib2trap utility

[James Shanks <jshanks@us.ibm.com>]

(1)Traps are defined in a MIB either by TRAP-TYPE statements (SNMP V1) or NOTIFICATION-TYPE (SNMP V2 and later) statements.
If your MIB doesn't have any of these, then it doesn't define traps.  Running mib2trap on it will give you nothing.

(2) Vendors can send pretty much whatever they want so long as it is formatted correctly.  There is no standard detailing what has to be in a trap.
A trapd can be sent with the vendors' OID .1.3.6.1.4.1.18  or with a standard OID such as MIB-II data, .1.3.6.1.2.1.2.2, which all SNMP agents are required to support.  The vendor gets to choose what he will do.

When you right-click the event in the browser on Windows and select "Event Details" it will popup a Window and show you what all the components of the incoming trap were.  The will be logged the same way in trapd.log (if you have enabled that) when the trap format is not found.   You can use this information to define the trap manually or to try to find the MIB which defines it so that you have a better understanding of what the variables mean. mib2trap is just a convenience tool.  If you have the right MIB,  it will create an  addtrap script which provide a default definition for that enterprise id and trap number, but that's about all.  Most people will want to modify that entry to make it more meaningful anyway.  If you don't have the right MIB and the meaning of the data is obvious, it is probably easier just to add the trap with Trap Settings and be done with it.

James Shanks
Level 3 Support  for Tivoli NetView for UNIX and Windows
Tivoli Software / IBM Software Group

Brian Kraftchick <Brian.Kraftchick@odfl.com> Sent by: owner-nv-l-digest@lists.us.ibm.com 10/23/2003 12:41 PM Please respond to nv-l

To:        "NVList (E-mail)" <nv-l@lists.us.ibm.com>         cc:                 Subject:        [nv-l] mib2trap utility

NV 7.1.2 on Win2K
 
General question with probably a simple answer on trying to understand how to get traps defined to NetView:  I have been trying to run mib2trap against several provided and downloaded MIB's to get the traps defined to NetView, however, I've only been successful in doing so on only 1 or 2 attempts with many different MIB files.  It seems from this that most MIB's do NOT "carry" the trap definitions....is this more true than not ?    In particular I am trying to get the traps defined to NetView for Bay Network Advanced Remote Node routers, so that I can get NetView to properly understand the traps when those routers have an interface(s) drop...and hence, update the status of those devices in the map, and send a "meaningful" event over to TEC.  A consultant configured those ARN's to send a generic link up or link down trap to our NetView server.....but NetView basically "takes them in" and puts!
  (as J. Shanks explained) a default wrapper on it since it doesn't know what to do with them.  The devices' interfaces are of type Wellfleet....does this mean that the traps that are coming in have OIDS of .1.3.6.1.4.1.18 (which is Wellfleet's enterprise id), or are they simply .1.3.6.1.2.1.2.2........etc.....basic mgmt type OID's?  Well, I don't know....in checking the trapd.log file....the information provided leads me to believe that the traps are coming in with the .1.3.6.1.2.1.2.... OID's.  What am I missing in understanding here ?  I feel like I am right on the verge of understanding exactly what is going on and how to "massage" NetView into doing what I want.....but just seem to be missing something.   
 
As always, thanks for everyone's help !!!!
 
 
 
Brian Kraftchick
Network Administrator
Old Dominion Freight Line
Ph: (336) 822-5938
Fax: (336) 822-5149
E-mail: brian.kraftchick@odfl.com
Web Site: www.odfl.com