3com 4500 PWR 26-PORT User Manual

C

HAPTER

 2: U

SING

 P

ORT

 C

OMMANDS

: Enter to set the port speed to 1000 Mbps. (Only available on Gigabit ports).

Enter to set the port speed to auto-negotiation.

Use the 

 command to configure the port speed. Use the 

 

command to restore the default speed. By default, the speed is 

.

Related command: 

.

To configure the port speed of port Ethernet1/0/1 to 10 Mbps, enter the 
following:

<4500>system-view

System View: return to User View with Ctrl+Z.

[4500]interface ethernet 1/0/1

[4500-Ethernet1/0/1]speed 10

[4500-Ethernet1/0/1]

unicast-suppression { ratio | pps pps }

Ethernet Port View

: Specifies the bandwidth ratio of unicast traffic allowed on an Ethernet 

port. The ratio value ranges from 1 to 100. The incremental step is 1. By default, 
the ratio is 100 meaning all unicast traffic is accepted. The smaller the ratio is, the 
less bandwidth is allocated to unicast traffic and therefore less broadcast traffic is 
accepted on the Ethernet port.

 

: Specifies the maximum number of unicast packets per second accepted 

on an Ethernet port. Ranges from 1 to 148810 pps.

Use 

 to configure the amount of unicast traffic that will be 

accepted on a port. Once the multicast traffic exceeds the value set by the user, 
the excess unicast traffic will be discarded. This feature can be used to ensure 
network service and prevent unicast storms.

Enable a limit of 20% of the available bandwidth on a port to be allocated to 
unicast traffic. Unicast traffic exceeding 20% of the ports bandwidth will be 
discarded.

<4500>system-view

System View: return to User View with Ctrl+Z.

[4500]interface ethernet 1/0/1