IBM Support

PH16764: REQUEST TO THE CLUSTER IP SENT FROM ACTIVE LB CAN NOT BE RESPONDED

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

APAR status

  • Closed as program error.

Error description

  • The packets received from the local host do not have the IP
    ether type set in the MAC header so the transmit of the packet
    fails.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server Network    *
    *                  Deployment Load Balancer for IPv4 and IPv6  *
    *                  on AIX                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: The Load Balancer for IPv4 and IPv6     *
    *                      will not forward requests from the      *
    *                      local client                            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    If cluster requests initiate from a client collocated on the
    same machine as the load balancer (on AIX), the load balancer
    will not forward the requests.
    

Problem conclusion

  • Load Balancer for IPv4 and IPv6 on AIX has been corrected to
    forward requests from collocated clients. The client must bind
    to a real IP address on the machine. If requests come from a
    cluster or returnaddress IP, they will be deemed in error and
    not forwarded.
    
    Fix levels:
        8.5.5.17
        9.0.5.2
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH16764

  • Reported component name

    WS EDGE LB IPV4

  • Reported component ID

    5724H8812

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-09-11

  • Closed date

    2019-10-09

  • Last modified date

    2019-10-09

  • 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

    WS EDGE LB IPV4

  • Fixed component ID

    5724H8812

Applicable component levels



Document information

More support for: WebSphere Application Server
Edge Component

Software version: 900

Reference #: PH16764

Modified date: 09 October 2019