IV50470: NETSCREENINTERFACE AGENT CAUSES DISCOVERY TO HANG WHEN A NSIFNAME CONTAINS COLON(:) - E.G. ETHERNET1/2.1:1

IBM Tivoli Network Manager IP 3.9.0 Fix Pack 4, 3.9.0-TIV-ITNMIP-FP0004
IBM Tivoli Network Manager IP Edition 3.9.0 Fix Pack 5, 3.9.0-TIV-ITNMIP-FP0005

APAR status

• Closed as program error.

Error description

• v3.9 - Platform Independent (FP3 -applicable for previous
  FixPackss too)
  
  Discovery hangs by NetScreenInterface agent while processing
  nsIfName that has value with colon (:) - e.g. ethernet1/2.1:1
  
  Below is walk of nfIfName (1.3.6.1.4.1.3224.9.1.1.2) output:
  SNMPv2-SMI::enterprises.3224.9.1.1.2.1 = STRING: "mgt"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.2 = STRING: "ethernet1/1"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.3 = STRING: "ethernet1/2"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.4 = STRING: "ethernet1/2:1"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.5 = STRING: "ethernet2/1"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.6 = STRING: "ethernet2/1:1"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.7 = STRING: "ethernet2/2"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.8 = STRING: "ethernet4/1"
  SNMPv2-SMI::enterprises.3224.9.1.1.2.9 = STRING: "ethernet4/2"
  
  The error in discovery log is:
  Thu Jul 25 17:35:19 2013 Warning: Syntax error - parse failure
  found in file CRivOQLParser.cc at line 143 -
  Syntax error at line 5 of:
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * ITNM-IP 3.9 on all platform                                  *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Discovery may or may not goes into endless loop. And         *
  * following message is found in ncp_disco where double         *
  * m_LowerNeighbours fields.                                    *
  *                                                              *
  * Thu Jul 25 17:35:19 2013  Warning: Syntax error - parse      *
  * failure found in file CRivOQLParser.cc at line 143 -         *
  * Syntax error at line 5 of:                                   *
  *   :                                                          *
  * (5th line after "Syntax error at line 5 of:")                *
  * insert into NetScreenInterface.returns (m_UniqueAddress,     *
  * m_Name, m_ObjectId, m_HaveAccess, m_Protocol,                *
  * m_DownloadFdbData, m_ManagerId, m_UpdAgent, m_LocalNbr)      *
  * values ('10.20.70.20', 'KVSupremo', '1.3.6.1.4.1.3224.1.51', *
  * 1, 1, 1, '', 'NetScreenInterface', {m_IfIndex=99 ,           *
  * m_IfName='ethernet0/1.1:1' , m_IfDescr='ethernet0/1.1:1' ,   *
  * m_IpAddress='10.10.10.10' , m_SubnetMask='255.255.255.0' ,   *
  * m_LocalNbrPhysAddr='AA:BB:CC:DD:EE:FF' ,                     *
  * m_LowerNeighbours=[{m_IfIndex=98}] ,                         *
  * m_LowerNeighbours.1=[{m_IfIndex=97}]});                      *
  *   :                                                          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * The fix for this APAR is contained in the following          *
  * maintenance packages:                                        *
  * fix pack | 3.9.0-ITNMIP-FP0004                               *
  ****************************************************************
  

Problem conclusion

• Problem: Due to the present of both logical unit identifier and
  channel in the interface name. e.g. ethernet0/1.1:1 when
  deciding the upward connection.
  
  Conclusion: Enhance the decision logic for upward connection to
  have single LowerNeighbours instead of 2 LowerNeighbours.
  

Temporary fix

Comments

APAR Information

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

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

Fix information

• Fixed component name

  NC/PREC DISCOVY

• Fixed component ID

  5724O52DS

Applicable component levels

• R390 PSY

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