80
Command mode: Port Mode.
Default: Loopback test is disabled in Ethernet port by default.
Usage Guide: Loopback test can be used to verify the Ethernet ports are working
normally. After loopback has been enabled, the port will assume a connection established
to itself, and all traffic sent from the port will be received at the very same port.
Example: Enabling loopback test in Ethernet ports 1/1-8.
Switch(config)#interface ethernet 1/1-8
Switch(Config-If-Port-Range)#loopback
3.1.7 mdi
Command: mdi { auto | across | normal }
no mdi
Function: Sets the cable types supported by the Ethernet port; the ―no mdi‖ command
sets the cable type to auto-identification. This command is not supported on combo ports
and fiber ports.
Parameters: auto indicates auto identification of cable types; across indicates crossover
cable support only; normal indicates straight-through cable support only.
Command mode: Port Mode.
Default: Port cable type is set to auto-identification by default.
Usage Guide: Auto-identification is recommended. Generally, straight-through cable is
used for switch-PC connection and crossover cable is used for switch-switch connection.
Example: Setting the cable type support of Ethernet ports 1/1-8 to straight-through cable
only.
Switch(config)#interface ethernet 1/1-8
Switch(Config-Port-Range)#mdi normal
3.1.8 name
Command: name <string>
no name
Function: Set name for specified port; the ―no name‖ command cancels this
configuration.
Parameter: <string> is a character string, which should not exceeds 200 characters.
Command Mode: Port Mode.
Default: No port name by default.
Usage Guide: This command is for helping the user manage switches, such as the user
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