IV37144: UNDOCUMENTED: ENABLETHROTTLING=1 FOR M_GETNEXTBOUNDARY, M_GETNEXTSLOWDOWN OR M_GENERALSLOWDOWN TO TAKE EFFECT.

APAR status

• Closed as documentation error.

Error description

• Product: Tivoli Network Manager
  Versions: 3.8, 3.9
  Platform:  All
  
  Symptoms:
  Setting the m_GetNextBoundary, m_GetNextSlowDown or
  m_GeneralSlowDown parameters has no effect until
  EnableThrottling is set to true in the NcPollerSchema.cfg
  

Local fix

• Insert the value into config.properties, either in
  NcPollerSchema.<domain>.cfg or via OQL
  
  ncp_oql -domain <your_domain_name> -service SnmpPoller "update
  config.properties set EnableThrottling = 1;"
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Affects all users.                                           *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When performing SNMP walk on network devices, CPU usage on   *
  * devices goes very high. The resolution would be to apply a   *
  * delay between consecutive GetNext requests on the device,    *
  * but modifying the appropriate SNMP parameters, such as       *
  * GetNextBoundary, GeneralSlowdown, and GetNextSlowdown does   *
  * not have any effect. Further investigation showed that the   *
  * problem was resolved by enabling throttling on the SNMP      *
  * helper. However, there is no mention of this in the          *
  * documentation.                                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Provide relevant background information on SNMP Helper       *
  * throttling within the documentation and explain how to       *
  * activate throttling.                                         *
  ****************************************************************
  Relevant information on throttling was added to the
  documentation.
  

Problem conclusion

• Information on SNMP Helper throttling was added to the
  Configuring section of the documentation. The Discovery and
  Polling engines both user the SNMP Helper, and therefore links
  were added in the documentation from the relevant discovery and
  polling topics to the new topics that describe throttling and
  how to activate it.
  

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

Applicable component levels