3Com 4500 Switch User Manual


 
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1 Port Basic Configuration
When performing basic port configuration, go to these sections for information you are interested in:
z Ethernet Port Configuration
z Ethernet Port Configuration Example
z Troubleshooting Ethernet Port Configuration
Ethernet Port Configuration
Combo Port Configuration
Introduction to Combo port
A Combo port can operate as either an optical port or an electrical port. Inside the device there is only
one forwarding interface. For a Combo port, the electrical port and the corresponding optical port are
TX-SFP multiplexed. You can specify a Combo port to operate as an electrical port or an optical port.
That is, a Combo port cannot operate as both an electrical port and an optical port simultaneously.
When one is enabled, the other is automatically disabled.
Configuring Combo port state
Follow these steps to configure the state of a Combo port:
To do… Use the command… Remarks
Enter system view
system-view
Enter Ethernet port view
interface interface-type
interface-number
Enable a specified Combo port
undo shutdown
Optional
By default, of the two ports in
a Combo port, the one with a
smaller port ID is enabled.
In case of a Combo port, only one interface (either the optical port or the electrical port) is active at a
time. That is, once the optical port is active, the electrical port will be inactive automatically, and vice
versa.
Initially Configuring a Port
Follow these steps to initially configure a port: