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Ethernet Port Overview 31
Setting the Ethernet Port Broadcast Suppression Ratio
You can use the following commands to restrict the broadcast traffic. Once the
broadcast traffic exceeds the value set by the user, the system maintains an
appropriate broadcast packet ratio by discarding the overflow traffic. This is done
to suppress broadcast storm, avoid congestion, and ensure good traffic flow.
The parameter indicates the maximum wire speed ratio of the broadcast traffic
allowed on the port. The smaller the ratio, the smaller the amount of broadcast
traffic allowed. If the ratio is 100%, broadcast storm suppression is not performed
on the port.
Perform the following configuration in Ethernet port view.
By default, 100% broadcast traffic is allowed to pass through and no broadcast
suppression is performed.
Setting the Link Type for an Ethernet Port
An Ethernet port can operate in three different link modes, access, hybrid, and
trunk. The management access port carries one VLAN only and is used for
connecting to the user’s computer.
A trunk port can belong to more than one VLAN and can transmit packets on
multiple VLANs. A hybrid port can also belong to more than one VLAN and
transmit packets on multiple VLANs.
However, the hybrid port allows packets from multiple VLANs to be sent without
tags but the trunk port only allows packets from the default VLAN to be sent
without tags.
Perform the following configuration in Ethernet port view.
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 port link type is the access link type.
Table 10 Setting the Ethernet Port Broadcast Suppression Ratio
Operation Command
Set the Ethernet port broadcast suppression
ratio
broadcast-suppression pct
Restore the default Ethernet port broadcast
suppression ratio
undo broadcast-suppression
Table 11 Set the Link Type for an Ethernet Port
Operation Command
Configure the port as an access port port link-type access
Configure the port as a hybrid port port link-type hybrid
Configure the port as a trunk port port link-type trunk
Restore the default link type, that is, the
access port.
undo port link-type