IBM Support

IV64567: BMCAST STATUS SHOWS PENDING AFTER RECONNECTING THE IB CABLE APPLIES TO AIX 7100-03

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When the IPoIB interface is used, the ifconfig command
    shows that the bmcast status is "PENDING" after
    disconnecting/reconnecting the IB cable.
    .
    #ifconfig ib0
    ib0:
    flags=e1a0063<UP,BROADCAST,NOTRAILERS,RUNNING
    ,ALLCAST,MULTICAST,GROUPRT>
            pmtu 2048 qkey 0x... qpn 0x.. lid 0x.. hca iba0
    port 1
            inet X.X.X.X netmask 0xffffff00 broadcast X.X.X.X
            tcp_sendspace 262144 tcp_recvspace 262144
            rfc1323 1 bmcast status:  PENDING...  <------
    .
    The IPoIB interface will not work properly in this
    situation.
    Ping will fail to any node.
    

Local fix

  • Detaching/Attaching the IPoIB interface by
    # chdev -l ibx -a state=down;chdev -l ibx -a state=up
    

Problem summary

  • When the IPoIB interface is used, the ifconfig command
    shows that the bmcast status is "PENDING" after
    disconnecting/reconnecting the IB cable.
    .
    #ifconfig ib0
    ib0:
    flags=e1a0063<UP,BROADCAST,NOTRAILERS,RUNNING
    ,ALLCAST,MULTICAST,GROUPRT>
            pmtu 2048 qkey 0x... qpn 0x.. lid 0x.. hca iba0
    port 1
            inet X.X.X.X netmask 0xffffff00 broadcast X.X.X.X
            tcp_sendspace 262144 tcp_recvspace 262144
            rfc1323 1 bmcast status:  PENDING...  <------
    .
    The IPoIB interface will not work properly in this
    situation.  Ping will fail to any node.
    

Problem conclusion

  • Code added to retry multicast group join in case the subnet
    manager does not respond the first time.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV69982
    6100-09 - use AIX APAR IV66116
    7100-02 - use AIX APAR IV70234
    7100-03 - use AIX APAR IV64567
    

APAR Information

  • APAR number

    IV64567

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-09-04

  • Closed date

    2014-10-17

  • Last modified date

    2015-09-30

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U865820

       UP15/05/19 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV64567

Modified date: 30 September 2015