Инструкции По Установке для 3com S7906E

 

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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.  

 

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.  

Follow these steps to configure a management Ethernet interface: 

To do… 

Use the command… 

Remarks 

Enter 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 

Optional 

By default, a management 
Ethernet interface is up. 

 

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.