3Com S7906E - Switch, Configuration Manual

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For a Combo port, only one port (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.
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You can use the display port combo command to display the Combo ports on the current device
and the mappings between the optical and electrical ports.
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You can judge whether a port is optical or electrical by the Media type is field in the display
interface command output.
Management Ethernet Interface Configuration
Introduction to management Ethernet interface
A management Ethernet interface also uses an RJ-45 connector. It can be used to connect a
background PC for software loading and system debugging, or connect to a remote device, for example,
a remote network management station, for remote system management. It has the attributes of a
common Ethernet interface, but because it is located on the main board, it provides much faster
connection speed than a common Ethernet interface when used for operations such as software
loading and network management.
Configuring a management Ethernet interface
Follow these steps to configure a management Ethernet interface:
To do… Use the command… Remarks
Enter system view system-view —
Enter management Ethernet
interface view interface M-Ethernet
interface-number
—
Set the description string description text
Optional
By default, the description
M-Ethernet0/0/0
Interface .
Shut down the management
Ethernet interface
shutdown
Optional
By default, a management
Ethernet interface is up.
Basic Ethernet Port Configuration
Three types of duplex modes are available to Ethernet ports:
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Full-duplex mode (full). Ports operating in this mode can send and receive packets simultaneously.
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Half-duplex mode (half). Ports operating in this mode can either send or receive packets at a given
time.
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Auto-negotiation mode (auto). Ports operating in this mode determine their duplex mode through
auto-negotiation.