Ramiro Camposagrado wrote:
I came accross this item on both the 2084 and 2094 PSP buckets:06/12/13 The TCP Segmentation Off-load feature (also called OSA Large Send) is enabled by default if all of the requirements documented in PK02490 are met. Due to the potential for OSAs that are using this feature to experience unrecoverable INOPs(requiring intervention by configuring the affected CHPIDs off-line), it is currently recommended that Segmentation Off-load be disabled. To disable Segmentation Offload, it is recommended that the following maintenance be applied and then code NOSEGMENTATIONOFFLoad on the GLOBALCONFIG statement in the TCPIP PROFILE.
This issue has been around foe a while. Originally, the segmentation offload could be disabled only through an operator command. Later, an APAR was taken to make it configurable via the GLOBALCONFIG statement. The PSP bucket gets updated from time-to-time, but IBM still recommends the feature be disabled.
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