29Parameters10: Sets 10 Mbps as an option for speed auto negotiation.100: Sets 100 Mbps as an option for speed auto negotiation.1000: Sets 1000 Mbps as an option for speed auto negotiation.DescriptionUse the speed auto command to set options for speed auto negotiation.Use the undo speed command to restore the default.By default, an Ethernet port negotiates with its peer for the highest speed supported by both ends. If thehighest speed is not desirable, narrow down the speed option list for negotiation with the speed autocommand. The two ends will pick out the highest speed supported by both ends on the list.The speed command and the speed auto command supersede each other, and whichever is configuredlast takes effect.For example, if you configure speed 100 after configuring speed auto 100 1000 on an interface, theinterface speed is set to 100 Mbps by force without negotiation. If you configure speed auto 100 1000after configuring speed 100 on the interface, the interface negotiates with its peer, and the negotiatedspeed is either 100 Mbps or 1000 Mbps.NOTE:• This function is available for auto-negotiation-capable Gigabit Layer-2 Ethernet electrical ports only.• To avoid negotiation failure, ensure that at least one speed option is supported at both ends.Examples# Configure port GigabitEthernet 1/0/1 to use 10 Mbps and 1000 Mbps for speed negotiation. system-view[Sysname] interface gigabitethernet 1/0/1[Sysname-GigabitEthernet1/0/1] speed auto 10 1000storm-constrainSyntaxstorm-constrain { broadcast | multicast | unicast } pps max-values min-valuesundo storm-constrain { all | broadcast | multicast | unicast }ViewEthernet interface viewDefault level2: System levelParametersall: Disables storm control for all types of packets: broadcast, multicast, and unknown unicast.broadcast: Enables or disables broadcast storm control.multicast: Enables or disables multicast storm control.unicast: Enables or disables unknown unicast storm control.
