OA46277: SNMP TRAP SENDING INVALID DATA IN NETVIEW 6.2.1

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Outbound strings - values of variable bindings in the SNMP TRAP
  appear to be run twice through EBCDIC->ASCII conversion, yield-
  ing invalid/corrupted data.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the SNMP command in IBM         *
  *                 Tivoli NetView for z/OS V6R2M1               *
  ****************************************************************
  * PROBLEM DESCRIPTION: For users of the SNMP SET, SNMP TRAP,   *
  *                      and SNMP INFORM commands, when a        *
  *                      variable binding is specified, the      *
  *                      value in that variable binding is of    *
  *                      type "string" (s), and there are no     *
  *                      display hints defined for the           *
  *                      Management Information Base (MIB)       *
  *                      variable in the MIB definition files    *
  *                      read by the SNMP command, the value     *
  *                      in the variable binding is not          *
  *                      encoded correctly (as an ASCII string)  *
  *                      in the protocol data unit (PDU) that    *
  *                      the SNMP command ultimately creates     *
  *                      and sends.                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When a variable binding is specified on an SNMP SET, SNMP TRAP,
  or SNMP INFORM command, the value in that variable binding is
  of type "string" (s), and there are no display hints defined
  for that MIB variable in the MIB definition files read by the
  SNMP command, the value in the variable binding is converted
  from EBCDIC to ASCII, then the result is converted from EBCDIC
  to ASCII again before inclusion in the outbound PDU.  As a
  result, a receiver expecting an ASCII string in the value of
  the MIB variable, such as an SNMP agent or SNMP trap receiver,
  will not recognize the data as ASCII string data.
  Note that if the MIB variable specified for the variable
  binding on the SNMP SET, SNMP TRAP, or SNMP INFORM command
  did have a display hint defined in the MIB definition files
  read by the SNMP command, this double EBCDIC to ASCII
  conversion does not occur.
  

Problem conclusion

• Part snmp_api.c is being changed to ensure that only one EBCDIC
  to ASCII conversion takes place for string data to be included
  in an outbound PDU.
  
  CMVC defect OA46277 tracks this change.
  
  Note that although this is a SYSROUTE APAR to route changes
  for APAR OA44941 to IBM Tivoli NetView for z/OS V6R2M1, it
  does not need to ship the materials related to AES support,
  as that is already contained in the base for the V6R2M1
  release.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  OA44941

• APAR is sysrouted TO one or more of the following:

  UA78319

Modules/Macros

• CNMSBWLK CNMSGET  CNMSGETB CNMSGETN CNMSSET
  CNMSTRAP CNMSWALK
  

Fix information

• Fixed component name

  NETVIEW FOR Z/O

• Fixed component ID

  5697NV600

Applicable component levels

• R21B PSY UA78319

     UP15/08/25 P F508

Fix is available

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