IY89387: AIX STOPS RESPONDING TO KEEPALIVES APPLIES TO AIX 5200-10

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 5.2.0.95
    *   bos.net.tcp.client 5.2.0.96
    *   bos.net.tcp.client 5.2.0.97
    ***************************************************************
    *PROBLEM DESCRIPTION:                                         *
    *  Idle connections may eventually be dropped.
    ***************************************************************
    *RECOMMENDATION:                                              *
    *  Apply apar IY89387
    ***************************************************************
    

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

    IY89387

  • Reported component name

    AIX 5L POWER V5

  • Reported component ID

    5765E6200

  • Reported release

    520

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Submitted date

    2006-09-11

  • Closed date

    2006-09-26

  • Last modified date

    2008-09-20

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

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

    IY89429

Fix information

  • Fixed component name

    AIX 5L POWER V5

  • Fixed component ID

    5765E6200

Applicable component levels

  • R520 PSY U808306

       UP06/11/17 I 1000

PTF to Fileset Mapping



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Document information


More support for:

AIX family

Software version:

520

Operating system(s):

AIX

Reference #:

IY89387

Modified date:

2008-09-20

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