A fix is available
APAR status
Closed as program error.
Error description
As a result of IZ73313 AIX now includes randomization of tcp timestamps for security purposes. This change can cause connection establishment problems to remote servers that are not under control of an administrator. To ensure AIX remains compatible with existing networks a new "no" network option is needed to allow switching between the previous monotonic timestamps and randomized timestamps.
Local fix
On the Linux server system turn off the tcp_tw_recycle and the tcp_timestamps network options. On the AIX client turn off rfc1323 will turn off timestamping
Problem summary
Issues relating to packet loss with non AIX hosts,
Problem conclusion
Feature which implemeneted the TImestamp generation mechanism and port randomisation has now been made optional.
Temporary fix
Comments
APAR Information
APAR number
IV02942
Reported component name
AIX 610 STD EDI
Reported component ID
5765G6200
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Submitted date
2011-07-05
Closed date
2011-07-05
Last modified date
2013-04-16
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
AIX 610 STD EDI
Fixed component ID
5765G6200
Applicable component levels
R610 PSY U848342
UP11/10/25 I 1000
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSLLZP","label":"AIX Standard Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSMV87","label":"AIX 6.1 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSAUMY","label":"IBM AIX Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11Q","label":"AIX 6.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11R","label":"APARs - AIX 7.1 environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
16 April 2013