Cisco Systems UCSCPCIEBTG Set tcp-rx-checksum-offload disable, Scope rss, Set rss disable enable

Managing Network Adapters

Modifying vNIC Properties

	Command or Action
Step 38	Server
	/chassis/adapter/host-eth-if/offload #
	set tcp-rx-checksum-offload {disable

enable}

Purpose

Enables or disables TCP Receive Offload Checksum Validation as follows:

•disable —The CPU validates all packet checksums.

Step 39	Server
	/chassis/adapter/host-eth-if/offload #
	set tcp-tx-checksum-offload {disable
	enable}

•enable —The CPU sends all packet checksums to the hardware for validation. This option may reduce CPU overhead. This is the default.

Enables or disables TCP Transmit Offload Checksum Validation as follows:

•disable —The CPU validates all packet checksums.

Step 40	Server
	/chassis/adapter/host-eth-if/offload #
	set tcp-large-receive-offload {disable
	enable}

•enable —The CPU sends all packet checksums to the hardware for validation. This option may reduce CPU overhead. This is the default.

Enables or disables TCP Large Packet Receive Offload as follows:

•disable —The CPU processes all large packets.

•enable —The hardware reassembles all segmented packets before sending them to the CPU. This option may reduce CPU utilization and increase inbound throughput. This is the default.

Step 41	Server	Exits to the host Ethernet interface command mode.
	/chassis/adapter/host-eth-if/offload #
	exit
Step 42	Server /chassis/adapter/host-eth-if #	Enters Receive-side Scaling (RSS) command mode.
	scope rss
Step 43	Server /chassis/adapter/host-eth-if/rss #	Enables or disables RSS, which allows the efficient
	set rss {disable enable}	distribution of network receive processing across
		multiple CPUs in multiprocessor systems. The default
		is enable for the two default vNICs, and disable for
		user-created vNICs.
Step 44	Server /chassis/adapter/host-eth-if/rss #	Enables or disables IPv4 RSS. The default is enable.
	set rss-hash-ipv4 {disable enable}
Step 45	Server /chassis/adapter/host-eth-if/rss #	Enables or disables TCP/IPv4 RSS. The default is
	set rss-hash-tcp-ipv4 {disable	enable.
	enable}
Step 46	Server /chassis/adapter/host-eth-if/rss #	Enables or disables IPv6 RSS. The default is enable.
	set rss-hash-ipv6 {disable enable}

	Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
104	OL-28893-01