Cisco Systems UCSCPCIECSC02 Enable TCP Segmentation, Offload field, Checksum Validation field

Models: UCSCPCIECSC02

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Managing Network Adapters

Viewing Virtual FEX Properties

Name

Description

Completion Queue Ring Size

The number of descriptors in each completion queue.

field

 

Step 14 In the TCP Offload area, review the information in the following fields:

Name

Description

Enable TCP Segmentation

If enabled, the CPU sends large TCP packets to the hardware to be

Offload field

segmented. If disabled, the CPU segments large packets.

 

Note

This option is also known as Large Send Offload

 

 

(LSO).

Enable TCP Rx Offload

If enabled, the CPU sends all packet checksums to the hardware for

Checksum Validation field

validation. If disabled, the CPU validates all packet checksums.

Enable TCP Tx Offload

If enabled, the CPU sends all packets to the hardware so that the

Checksum Generation field

checksum can be calculated. If disabled, the CPU calculates all packet

 

checksums.

Enable Large Receive field

If enabled, the hardware reassembles all segmented packets before

 

sending them to the CPU. If disabled, the CPU processes all large

 

packets.

 

Step 15 In the Receive Side Scaling area, review the information in the following fields:

Name

Description

Enable TCP Receive Side Scaling

Receive Side Scaling (RSS) distributes network receive processing

field

across multiple CPUs in multiprocessor systems.

 

If enabled, network receive processing is shared across processors

 

whenever possible. If disabled, network receive processing is always

 

handled by a single processor even if additional processors are available.

Enable IPv4 RSS field

If enabled, RSS is enabled on IPv4 networks.

Enable TCP-IPv4 RSS field

If enabled, RSS is enabled for TCP transmissions across IPv4 networks.

Enable IPv6 RSS field

If enabled, RSS is enabled on IPv6 networks.

Enable TCP-IPv6 RSS field

If enabled, RSS is enabled for TCP transmissions across IPv6 networks.

Enable IPv6 Extension RSS field

If enabled, RSS is enabled for IPv6 extensions.

Enable TCP-IPv6 Extension RSS If enabled, RSS is enabled for TCP transmissions across IPv6 networks. field

 

Cisco UCS C-Series Servers Integrated Management Controller GUI Configuration Guide, Release 1.4

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OL-23489-08

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Cisco Systems UCSCPCIECSC02 Enable TCP Segmentation, Offload field, Checksum Validation field, Checksum Generation field