3Com 10014298 Setting the Link Type for an Ethernet Port, Adding the Ethernet Port to a Vlan

Ethernet Port Overview 39

Perform the following configuration in Ethernet port view.

Table 33 Setting Ethernet Port Broadcast Suppression Ratio

Operation	Command
Set Ethernet port broadcast suppression ratio	broadcast-suppression pct
Restore the default Ethernet port broadcast	undo broadcast-suppression
suppression ratio

By default, 100% broadcast traffic is allowed to pass through, that is, no broadcast suppression will be performed.

Note that in the Switch 7750, you can only use the command at the port on a 20-port 10/100/1000BASE-T Gigabit Ethernet card or a 20-port 1000BASE-X Gigabit Ethernet card.

Setting the Link Type for an Ethernet Port

An Ethernet port can operate in three different link types, access, hybrid, and trunk. The access port carries one VLAN only and is used for connecting to the user’s computer.

The trunk port can belong to more than one VLAN and receive/send the packets on multiple VLANs. The hybrid port can also carry more than one VLAN and receive/send the packets on multiple VLANs. The difference between the hybrid port and the trunk port is that the hybrid port allows the packets from multiple VLANs to be sent without tags, but, the trunk port only allows the packets from the default VLAN to be sent without tags.

Perform the following configuration in Ethernet port view.

Table 34 Set Link Type for Ethernet Port

Operation	Command
Set the port to access port	port link-type access
Set the port to hybrid port	port link-type hybrid
Set the port to trunk port	port link-type trunk
Restore the default link type, that is, the	undo port link-type
access port.

A port on a switch can be configured as an access port, a hybrid port, or a trunk port. However, to reconfigure between hybrid and trunk link types, you must first restore the default, or access link type.

The default link type is the access link type.

Adding the Ethernet Port to a VLAN

The following commands are used for adding an Ethernet port to a specified VLAN. Access ports can be added to only one VLAN, while hybrid and trunk ports can be added to multiple VLANs.