3com 4500 PWR 50-PORT Manual Do Utilizador

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Use the 

command to configure the network cable type for an Ethernet 

port. 

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Use the 

 command to restore the default type. By default, the 

network cable type is recognized automatically (the 

command).

Note that this command only has effect on 10/100BASE-T and 
10/100/1000BASE-T ports. The Switch 4500 only supports 

 (auto-sensing). If 

you enter another type, an error message displays.

To configure the network cable type of port “Ethernet1/0/1” as cross-over cable, 
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]mdi across

[4500-Ethernet1/0/1]

multicast-suppression { ratio | pps pps}

Ethernet Port View

: Specifies the bandwidth ratio of multicast 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 multicast traffic is accepted. The smaller the ratio is, 
the less bandwidth is allocated to multicast traffic and therefore less broadcast 
traffic is accepted on the Ethernet port.

 

: Specifies the maximum number of multicast packets per second accepted 

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

Use 

 to configure the amount of multicast traffic that will 

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

Enable a limit of 20% of the available bandwidth on a port to be allocated to 
multicast traffic. Multicast 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