Fixes are available
APAR status
Closed as program error.
Error description
Communications Server for AIX and Linux --------------------------------------- Link failure with the following message in the sna.err log: 2011-09-11 09:13:31 EST 1536-14(2-10) E (snatest) GDLC detected LS outage. LS = TESTLS Outage = frame overflow (-9999)
Local fix
A workaround is to configure the link BTU size to be equal to or larger than the port BTU size.
Problem summary
USERS AFFECTED: All using LLC links. PROBLEM DESCRIPTION: When an incoming connection matches a predefined link station definition, the BTU size sent on the XID is taken from the port definition, but the BTU size sent to the DLC is taken from the link definition. If the link setting is smaller than the port setting, that could allow a condition where the remote side can send a frame larger than the DLC will accept, causing a frame overflow condition which causes the link to fail. LOCAL FIX: A workaround is to configure the link BTU size to be equal to the port BTU size. PROBLEM SUMMARY: The wrong configuration setting is being used in XID negotiation.
Problem conclusion
Code has been modified to correctly set the maximum BTU size on the transmitted XIDs. This problem also exists in CS Linux but does not cause the link to fail. The code has also been corrected in CS Linux.
Temporary fix
sna_v5router64
Comments
APAR Information
APAR number
IV08617
Reported component name
CS AIX V6.X
Reported component ID
5765E5100
Reported release
640
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-10-03
Closed date
2011-10-06
Last modified date
2012-09-11
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
CS AIX V6.X
Fixed component ID
5765E5100
Applicable component levels
R631 PSY
UP
R640 PSY U851826
UP12/09/11 I 1000
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSPQKF","label":"Communications Server for AIX"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"640","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
11 September 2012