APAR status
Closed as duplicate of another APAR.
Error description
AIX LPARs using VLAN pseudo-devices configured over virtual ethernet ports, and observing bad performance when PLSO is enabled. Bug is in the virtual ethernet device driver receive path. When VLAN-tagged large packets send using PLSO are received by the driver, an incorrect ethernet header size is calculated which causes the driver to discard valid large receive packets.
Local fix
Disable PLSO: Either disable mtu_bypass: # chdev -l enX -a mtu_bypass=off or disable PLSO on the VEA or trunk VEA: # chdev -l entX -a platform_lso=no
Problem summary
Problem conclusion
Temporary fix
Comments
Duplicate of IJ25442
APAR Information
APAR number
IJ25397
Reported component name
AIX 6.1 EXT SUP
Reported component ID
5765G6299
Reported release
61E
Status
CLOSED DUB
PE
NoPE
HIPER
NoHIPER
Submitted date
2020-06-04
Closed date
2020-06-10
Last modified date
2020-06-10
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Applicable component levels
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSLLZP","label":"AIX Standard Edition"},"Platform":[{"code":"PF053","label":"Power Systems"}],"Version":"61E","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
Document Information
Modified date:
11 June 2020