Managing Network Adapters
Modifying vNIC Properties
Name | Description |
Enable TCP Segmentation If checked, the CPU sends large TCP packets to the hardware to be
Offload check boxsegmented. This option may reduce CPU overhead and increase throughput rate.
| If cleared, the CPU segments large packets. | |
| Note | This option is also known as Large Send Offload |
|
| (LSO). |
Enable TCP Rx Offload | If checked, the CPU sends all packet checksums to the hardware for | |
Checksum Validation check box | validation. This option may reduce CPU overhead. | |
| If cleared, the CPU validates all packet checksums. | |
Enable TCP Tx Offload | If checked, the CPU sends all packets to the hardware so that the | |
Checksum Generation check box | checksum can be calculated. This option may reduce CPU overhead. | |
| If cleared, the CPU calculates all packet checksums. | |
Enable Large Receive 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. | |
Step 14 In the Receive Side Scaling area, update the following fields: | ||
Name | Description | |
Enable TCP Receive Side Scaling | Receive Side Scaling (RSS) distributes network receive processing | |
check box | 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 IPv4 RSS check box | If checked, RSS is enabled on IPv4 networks. | |
Enable | If checked, RSS is enabled for TCP transmissions across IPv4 networks. | |
Enable IPv6 RSS check box | If checked, RSS is enabled on IPv6 networks. | |
Enable | If checked, RSS is enabled for TCP transmissions across IPv6 networks. | |
Enable IPv6 Extension RSS | If checked, RSS is enabled for IPv6 extensions. | |
check box |
|
|
Enable | If checked, RSS is enabled for TCP transmissions across IPv6 networks. | |
check box |
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Cisco UCS
29 |