3com 4300 User Guide
When the Module is installed, you can configure it
through your Switch to add extra functionality. Refer to
the documentation that accompanies your Switch 4300
for more information.
through your Switch to add extra functionality. Refer to
the documentation that accompanies your Switch 4300
for more information.
The Switch 4300 dynamically assigns port numbers to
each Module installed, so if you add, replace or remove a
Module, the port number of the other Module may
change. The port numbers allocated depend on the type
of Module; the number of Modules installed and the slots
into which they are fitted.
each Module installed, so if you add, replace or remove a
Module, the port number of the other Module may
change. The port numbers allocated depend on the type
of Module; the number of Modules installed and the slots
into which they are fitted.
shows how a single port Module, inserted into
Slot 2, will be assigned a port number of 49. If you then
insert an additional dual or a single port Module into
Slot 1 (see
insert an additional dual or a single port Module into
Slot 1 (see
and
) the port numbering will
change. The port number originally assigned to the
Module in Slot 2 (and any port parameters you may have
set against that port number) will be re-assigned to the
Module installed into Slot 1. Similarly, if you then remove
the Module from Slot 1, the port number and parameter
settings will be re-assigned to the Module in Slot 2.
Module in Slot 2 (and any port parameters you may have
set against that port number) will be re-assigned to the
Module installed into Slot 1. Similarly, if you then remove
the Module from Slot 1, the port number and parameter
settings will be re-assigned to the Module in Slot 2.
CAUTION: Always check that each port number has the
correct parameter settings after adding, changing or
removing a Module. This is due to the method in which
the Switch dynamically assigns port numbers.
correct parameter settings after adding, changing or
removing a Module. This is due to the method in which
the Switch dynamically assigns port numbers.
Figure 2 Rear View of Switch 4300
Module Port Number Allocation
Figure 3 Rear View of Switch 4300
Installing a Dual Port Module into Slot 1
Figure 4 Rear View of Switch 4300
Installing a Single Port Module into Slot 1
When using the Module port, note the following:
The Module only operates at 1000 Mbps.
The Module only operates when connected to another
1000BASE-LX device.
1000BASE-LX device.
The Module only operates in full duplex mode.
The Module is not hot-swappable.
The Module is not hot-insertable.
The Module only operates with multimode and single
mode fiber optic cable.
mode fiber optic cable.
If you suspect a problem, carry out these steps before
contacting your supplier:
contacting your supplier:
Ensure that the Module is correctly installed in the
Switch.
Switch.
Ensure that the Switch in which the Module is fitted is
powered-up.
powered-up.
Ensure that the device at the far end of the link is
powered-up and operating correctly.
powered-up and operating correctly.
Check that all connectors on the fiber optic segment
are correctly engaged.
are correctly engaged.
Clean the terminators by wiping them gently with a
clean tissue or cotton bud moistened with a little
ethanol. Dirty fiber terminators on the fiber optic
segment impair the quality of the light transmitted
through the cable.
clean tissue or cotton bud moistened with a little
ethanol. Dirty fiber terminators on the fiber optic
segment impair the quality of the light transmitted
through the cable.
For information about technical support, refer to the
documentation supplied with your Switch.
documentation supplied with your Switch.
M
ANAGING
THE
M
ODULE
M
ODULE
P
ORT
R
ESTRICTIONS
P
ROBLEM
S
OLVING
4