H Commands

hardware multicast hw-hash

To use hardware hashing for multicast traffic on an EtherChannel interface, use the hardware multicast hw-hash command. To restore the defaults, use the no form of this command.

hardware multicast hw-hash

no hardware multicast hw-hash

Syntax Description

This command has no arguments or keywords.

Command Default

The software selection method is used for multicast traffic.

Command Modes


Interface configuration mode

Command History

Release

Modification

5.2(1)N1(1)

This command was introduced.

Usage Guidelines

By default, ingress multicast traffic on any port in the switch selects a particular EtherChannel member to egress the traffic. To reduce potential issues with the bandwidth and to provide effective load balancing of the ingress multicast traffic, hardware hashing is used for multicast traffic.


Note
Hardware hashing is not available on a Cisco Nexus 2000 Series Fabric Extender HIF port (downlink port).

Examples

This example shows how to set the hardware hashing for multicast traffic on an EtherChannel interface: 


switch(config)# interface port-channel 21
 
switch(config-if)# hardware multicast hw-hash
 
switch(config-if)#

This example shows how to restore the default software selection method for multicast traffic on an EtherChannel interface: 


switch(config)# interface port-channel 21
 
switch(config-if)# hardware multicast hw-hash
 
switch(config-if)# no hardware multicast hw-hash
 
switch(config-if)#

Related Commands

Command

Description

show interface port-channel

Displays the status of the EtherChannel interface configuration.

high-performance host-netio (virtual Ethernet interface)

To turn on high performance on the host, use the high-performance host-netio command. To disable high performance, use the no form of this command.

high-performance host-netio

no high-performance host-netio

Syntax Description

This command has no arguments or keywords.

Command Default

Disabled

Command Modes


Virtual Ethernet interface configuration mode

Command History

Release

Modification

5.2(1)N1(1)

This command was introduced.

Usage Guidelines

This command does not require a license.

Examples

This example shows how to enable high performance on the host: 


switch# configure terminal
switch(config)# interface vethernet 1
switch(config-if)# high-performance host-netio
switch(config-if)#

Related Commands

Command

Description

show interface vethernet

Displays virtual Ethernet interface configuration information.

show running-config interface

Displays the running configuration information for an interface.