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Commands
ETEP CLI User Guide 197
tx-enable
Description
The tx-enable command determines how the transmitter detects and responds to a loss of signal on either
of the ETEP data ports.
User Type
Administrator
Hierarchy Level
Local and remote interface configuration mode
Syntax
tx-enable {always | follow-rx}
Attributes
always –
The transmitter is always on regardless of whether a signal is received.
follow-rx –
The transmitter follows the behavior of the receiver. If loss of signal is detected on the
remote port, then the transmitter on the local port is disabled. Similarly, if loss of signal is detected on the
local port, the ETEP disables the transmitter on the remote port. When the lost signal is restored, the
correlating transmitter is enabled. This is the default setting.
Usage Guidelines
The ETEP can be configured to propagate a loss of signal event detected at one of its data ports to the
device connected to its other data port. The ETEP performs this function by monitoring for loss of signal
at the port’s receiver. For example, when the loss of signal is detected on the ETEP’s remote port, the
local port transmitter is disabled, generating a loss of signal event in connecting device’s port. When the
loss of signal event clears on the remote port, the local port transmitter is enabled, clearing the event in
the connecting device’s port. Similarly, when a loss of signal is detected on the local port, the remote port
transmitter is disabled.
Alternatively, the ETEP port transmitter can be configured to always remain enabled, regardless of the
other port’s link state. In this state the ETEP can reliably recover from a link loss. But because the
transmitter is always on, the appliance may inadvertently mask cable or device failures in the network.
The transmitter behavior configuration should be the same on both the local and remote ports.
Example
The following example configures the tx-enable command on the remote interface. The commands sets
the transmitter to follow the receiver.
admin> configure
config> remote-interface
rem-if>
tx-enable follow-rx