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IV03133: CREATETRUNKCONNECTIONS STITCHER

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • ITNM 3.8 FP5
    
    Linux
    
    ===================
    Customer is using ITNM in a multiple virtual machines env
    connected on a switch port that is a trunking VLAN.
    The stitcher is connecting each of the VLAN trunk end points
    directly to the VMs. This meant that in cases where there were
    many VMs connected to the same physical switch port a large
    number of connections were being created ( numConnections =
    numberofVLANs  * numberOfVMs ). I have changed the stitcher so
    that it will leave the VM connected to directly to the trunk
    port instead of to each of the VLAN trunk end points the port
    contains. This way of modelling things greatly reduces the
    number of connections in the NCIM database but will not alter
    the connectivity of the graph used for the RCA calculations or
    the connections which are displayed in the GUI.
    

Local fix

  • Recreate the stitcher by just reduce the number of connections
    to NCIM model whitch also affect the performance of the
    import of the topology to NCIM and the speed at which the GUI is
    able to display network views both during and after topology
    updates.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users with an network that has many VLAN trunks connecting   *
    * to many virtual machines                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * The CreateTrunkConnections stitcher can create a very large  *
    * number of connections when a large number of virtual         *
    * machines are all connected to a trunk port which is trunking *
    * many VLANs.                                                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * | fix pack | 3.8.0-ITNMIP-FP0007                             *
    ****************************************************************
    

Problem conclusion

  • The CreateTrunkConnections stitcher was modified to just
    maintain a single connection from the trunk port to each remote
    neighbour. The trunk ports were then upwardly connected to
    maintain connectivity for RCA purposes.
    
    | fix pack | 3.8.0-ITNMIP-FP0007
    | fix pack | 3.9.0-ITNMIP-FP0001
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV03133

  • Reported component name

    TIV NETWK MGR I

  • Reported component ID

    5724S4500

  • Reported release

    380

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-07-11

  • Closed date

    2011-08-24

  • Last modified date

    2013-02-19

  • 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

    TIV NETWK MGR I

  • Fixed component ID

    5724S4500

Applicable component levels

  • R380 PSY

       UP

  • R390 PSY

       UP

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Document Information

Modified date:
19 February 2013