IY89429: AIX STOPS RESPONDING TO KEEPALIVES APPLIES TO AIX 5300-07

A fix is available

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When a TCP connection goes idle, and remote end (need not
    be AIX) sends TCP keepalives, AIX will respond to 5
    keepalives and stop responding after that. However, it
    will respond to FIN when closing the connection.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:
    * All users with the following filesets at these levels:
    *   bos.net.tcp.client 5.3.0.50
    *   bos.net.tcp.client 5.3.0.51
    *   bos.net.tcp.client 5.3.0.52
    ****************************************************************
    * PROBLEM DESCRIPTION:
    * Idle TCP/IP connections may be dropped.
    ****************************************************************
    * RECOMMENDATION:
    * Install APAR IY89429.
    ****************************************************************
    

Problem conclusion

  • reset the t_badacks variable in the tcp control block during
    the tcp_slowtimo execution. when this variable is reset to
    zero, the computer will again respond to keepalives.
    

Temporary fix

Comments

  • 5200-10 - use AIX APAR IY89387
    5300-06 - use AIX APAR IY89429
    5300-07 - use AIX APAR IY89429
    

APAR Information

  • APAR number

    IY89429

  • Reported component name

    AIX 5.3

  • Reported component ID

    5765G0300

  • Reported release

    530

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Submitted date

    2006-09-12

  • Closed date

    2006-09-26

  • Last modified date

    2008-09-20

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

    IY89387

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

Fix information

  • Fixed component name

    AIX 5.3

  • Fixed component ID

    5765G0300

Applicable component levels

  • R530 PSY U809482

       UP06/10/26 I 1000

PTF to Fileset Mapping



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Document information


More support for:

AIX family

Software version:

530

Operating system(s):

AIX

Reference #:

IY89429

Modified date:

2008-09-20

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