IBM Support

IV56490: ACTIVE DGD ON MULTIPLE ROUTES TO SAME GATEWAY CAUSES PERF ISSUE 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 there are many routes using the same gateway and if
    Active DGD is enabled on all of them, this would cause
    that many ICMP packets to go out to the gateway (one per
    route with Active DGD flag).
    This can cause performance issues on the router.
    

Local fix

Problem summary

  • Active DGD on multiple routes to same gateway through same
    interface causes performance issue on the router.
    
    When there are many routes using the same gateway and if
    Active DGD is enabled on all of them, this would cause
    that many ICMP packets to go out to the gateway (one per
    route with Active DGD flag).
    This can cause performance issues on the router.
    

Problem conclusion

  • Code is modified to not to send unnecessary ICMP ping requests
    to the gateway when mulitple routes are configured with
    same gateway and same interface.
    

Temporary fix

Comments

  • 6100-09 - use AIX APAR IV56454
    6100-09 - use AIX APAR IV56454
    6100-09 - use AIX APAR IV56454
    7100-03 - use AIX APAR IV56490
    7100-04 - use AIX APAR IV56506
    

APAR Information

  • APAR number

    IV56490

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-03-10

  • Closed date

    2014-03-10

  • Last modified date

    2016-05-10

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

    IV51814

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

    U866445

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U866445

       UP14/05/22 I 1000



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV56490

Modified date: 10 May 2016