3com 3031 Instruccion De Instalación

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C
HAPTER
 14: WAN I
NTERFACE
 C
ONFIGURATION
Perform the following configuration in AUX interface view.
The link setup mode defaults to flow mode.
Setting level detection
If the AUX interface has been disabled to make level detection, the system will 
only detect whether the interface is connected to an external cable and then 
report the interface state (UP or DOWN) to the user. If the interface has been 
enabled to make level detection, the system will detect the DSR(Data Set Ready) 
signal in addition to the external cable. The interface will be regarded UP only if 
the detected DSR signal is valid. Otherwise, it will be regarded DOWN.
Perform the following configuration in AUX interface view.
By default, level detection is enabled.
Setting local loop
You may enable the AUX interface to make local loop for the purpose of testing 
some special functions.
Perform the following configuration in AUX interface view.
By default, local loop is disabled.
Setting link layer protocol type
Perform the following configuration in AUX interface view.
Table 151   Setting a link setup mode on an AUX interface
Operation
Command
Configure the AUX interface to set up links with the protocol 
approach
async mode protocol
Configure the AUX interface to set up links with the flow 
approach
async mode flow
Table 152   Setting the level detection function on the AUX interface
Operation
Command
Enable the AUX interface to make level detection
detect dsr-dtr
Disable the AUX interface to make level detection
undo detect dsr-dtr
Table 153   Enabling/Disabling the AUX interface to make local loop
Operation
Command
Enable the AUX interface to make local loop
loopback
Disable the AUX interface to make local loop
undo loopback
Table 154   Setting the link layer protocol of the AUX interface
Operation
Command
Set the link layer protocol of the AUX interface to PPP
link-protocol ppp