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setting) will be sent to the management module. The actions taken by the
management module, upon receipt of this information are described in
4.2.4.4, “ Configuring DMM Device” on page 50. By default, DIP switch 5 is
set to NVRAM.
7.6 Configuring the 20/40-Port 10Base-T Modules
To configure the 20/40-port 10Base-T modules you must do the following:
•
Select network for each port
Each port can be assigned to one of the 8 Ethernet segments on the
backplane or one of the 8 isolated segments on the module. Note that the
ports can be connected to a maximum of eight backplane and/or isolated
segments simultaneously.
The port assignment can be done via onboard dip switches or the following
management module command:
SET PORT {slot.port} NETWORK {network}
Note
When using DIP switches on these modules, it is only possible to assign
all the ports to the same network. This network can be one of the 8
Ethernet segments on the backplane, or isolated-1.
•
Enable/disable ports
Each port on the 20/40-port 10BASE-T modules can be enabled/disabled
independently from the other ports. You can use the following management
module command to enable/disable a port:
SET PORT {slot.port} MODE {enable|disable}
•
Enable/disable auto-polarity
This feature enables the 20/40-port 10BASE-T modules to automatically
switch the polarity of the twisted-pair cabling in case the polarity of the
cabling has been erroneously reversed during the cable assembly. To
enable auto polarity detection and reversal on each port, you can use the
following management module command:
SET PORT {slot.port} AUTO_POLARITY {enable|disable}
•
Set port redundancy
The port redundancy feature allows you set redundancy between two ports.
The two ports can be on the same or different modules and can be of the
same or different types. For example, a 10Base-T port can be defined to be
a redundant port for a 10Base-FB port. Port redundancy is allowed between
the 8250 and the 8260 ports. You can use the following management module
command to set port redundancy:
SET PORT {slot.port} MODE REDUNDANT {slot.port}
When the port redundancy is no longer required, you can use the following
management command to set the port to operate in non-redundant mode:
SET PORT {slot.port} MODE NON-REDUNDANT
•
Set port squelch
The 20/40-port 10BASE-T modules allow you to establish either normal (high)
or low (sensitive) squelch level for each port. The normal squelch level
Chapter 7. 8260 Ethernet Modules 111