thank a lot James, but when a execute the output, i got  this error, can you
take a look 

root@aixtivlab1:/saq/home/users/sisauda/mib> ./firewall.trap
Not loading trap format.  Trap name coldStart is already in use. Rename the
event to avoid the conflict
Trap warmStart has been added.
Trap linkDown has been added.
Trap linkUp has been added.
Not loading trap format.  Trap name authenticationFailure is already in use.
Rename the event to avoid the conflict
Trap egpNeighborLoss has been added.
Trap snmpRisingAlarm has been added.
Trap snmpFallingAlarm has been added.
Trap snmpObjectUnavailableAlarm has been added.
root@aixtivlab1:/saq/home/users/sisauda/mib> 

-----Message d'origine-----
De : James Shanks [mailto:jshanks AT us.ibm DOT com]
Envoyé : 4 avril, 2002 09:20
À : D'Apice, Dominic; nv-l AT lists.tivoli DOT com
Objet : Re: [nv-l] compile error when i do mib2trap


The BIT STRING construct is no longer valid in SNMP so mib2trap, which 
uses the SNMP V2 libraries, rejects it.
Just change line 2859 from this 

 +2858  mtrBitString OBJECT-TYPE
 +2859      SYNTAX     BIT STRING {

to this:

+2858  mtrBitString OBJECT-TYPE
+2859      SYNTAX     BITS {

which is the equivalent and this problem will go away. 
I don't know, however, if there are others lurking in this MIB

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