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13 Ethernet
13.5 Configuration of Fastethernet [AX1250S] [AX1240S]
13.5.1 Configuring ports
(1) Setting the transmission speed and duplex mode
You can set the transmission speed and duplex mode used for communication between the
Switch and a remote device. By default, the transmission speed and duplex mode are
determined automatically by auto-negotiation.
(a) Connecting to a remote device that does not support auto-negotiation
Points to note
Depending on the remote device, 10BASE-T or 100BASE-TX connection sometimes
cannot be established by auto-negotiation. If the connection cannot be established,
you need to specify the transmission speed and duplex mode according to the
remote device, and establish a connection with fixed settings.
Command examples
1.
(config)# interface fastethernet 0/10
(config-if)# shutdown
(config-if)# speed 10
(config-if)# duplex half
Configures the switch so that the connection with the remote device is a 10BASE-T,
half-duplex connection.
2.
(config-if)# no shutdown
(config-if)# exit
(b) Using a specific communication speed even when auto-negotiation is used
Points to note
For the Switch, you can set a specific transmission speed even when
auto-negotiation is used for a connection. Note that if auto-negotiation is used and a
specific transmission speed is also specified, even if a connection with
auto-negotiation is successful, the status of the line is not link-up unless the set
transmission speed is assured. This eliminates the risk of the line being connected at
an unexpected transmission speed.
Command examples
1.
(config)# interface fastethernet 0/10
(config-if)# shutdown
(config-if)# speed auto 100
Configure the Switch to only use 100BASE-TX even if it establishes a connection
with the remove device via auto-negotiation.
2.
(config-if)# no shutdown
(config-if)# exit
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