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13 Ethernet
2.
(config-if)# link debounce time 5000
(config-if)# exit
Sets the link-down detection timer value to 5000 milliseconds.
Notes
Using a link-down detection timer can prevent a link from becoming unstable.
However, if a fault occurs, the time required for the interface to settle in the link-down
status is longer. If you want this time to be short, do not set a link-down detection
timer.
13.2.7 Flow control settings
To prevent the Switch from discarding received frames when the reception buffer has
become full, the Switch needs to send a pause packet to the remote device to request
regulated sending. The remote device must be able to receive pause packets and regulate
sending in response to a received pause packet.
Whether the Switch regulates sending when it receives a pause packet from the remote
device depends on the settings. During auto-negotiation, the Switch can determine
whether pause packets will be passed between the Switch and the remote device.
Points to note
Determine flow control settings that do not conflict with the settings on the remote
device.
The following shows a configuration example for a Fastethernet port.
Command examples
1.
(config)# interface fastethernet 0/10
(config-if)# shutdown
(config-if)# flowcontrol send off
(config-if)# flowcontrol receive off
Stops the passing of pause packets between the switch and the remote device.
2.
(config-if)# no shutdown
(config-if)# exit
Notes
For 100BASE-FX, no flow control operation based on negotiation is performed
because auto-negotiation is not used. Set
setting is used.
13.2.8 Automatic MDIX functionality settings
Fastethernet and Gigabitethernet (RJ45) ports on the Switch support automatic MDIX.
Therefore, these ports enable communication by automatically switching the MDI setting
according to the cable type (straight or crossover) during auto-negotiation. If this
functionality is disabled, MDI-X (for hub use) is always selected.
162
full
for
duplex
so that only full duplex
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