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DescriptionName
If checked, the CPU sends large TCP packets to the hardware to be
segmented. This option may reduce CPU overhead and increase
throughput rate.
If cleared, the CPU segments large packets.
This option is also known as Large Send Offload
(LSO).
Note
Enable TCP Segmentation
Offload check box
If checked, the CPU sends all packet checksums to the hardware for
validation. This option may reduce CPU overhead.
If cleared, the CPU validates all packet checksums.
Enable TCP Rx Offload
Checksum Validation check box
If checked, the CPU sends all packets to the hardware so that the
checksum can be calculated. This option may reduce CPU overhead.
If cleared, the CPU calculates all packet checksums.
Enable TCP Tx Offload
Checksum Generation check box
If checked, the hardware reassembles all segmented packets before
sending them to the CPU. This option may reduce CPU utilization and
increase inbound throughput.
If cleared, the CPU processes all large packets.
Enable Large Receive check box
Step 14
In the Receive Side Scaling area, update the following fields:
DescriptionName
Receive Side Scaling (RSS) distributes network receive processing
across multiple CPUs in multiprocessor systems.
If checked, network receive processing is shared across processors
whenever possible.
If cleared, network receive processing is always handled by a single
processor even if additional processors are available.
Enable TCP Receive Side Scaling
check box
If checked, RSS is enabled on IPv4 networks.Enable IPv4 RSS check box
If checked, RSS is enabled for TCP transmissions across IPv4 networks.Enable TCP-IPv4 RSS check box
If checked, RSS is enabled on IPv6 networks.Enable IPv6 RSS check box
If checked, RSS is enabled for TCP transmissions across IPv6 networks.Enable TCP-IPv6 RSS check box
If checked, RSS is enabled for IPv6 extensions.Enable IPv6 Extension RSS
check box
If checked, RSS is enabled for TCP transmissions across IPv6 networks.Enable TCP-IPv6 Extension RSS
check box
Cisco UCS C-Series Servers Integrated Management Controller GUI Configuration Guide, Release 1.4
OL-23489-08 29
Managing Network Adapters
Modifying vNIC Properties