3Com Switch 100BASE FX User Manual

10-Port 100BASE-FX and  
20-Port 10/100BASE-TX  
Fast Ethernet Layer 2  
Switching Modules  
Quick Start Guide  
For the CoreBuilder® 9000 Enterprise Switch  
Module Descriptions This guide describes key installation information for two  
CoreBuilder® 9000 Fast Ethernet (FEN) Switching Modules:  
The 10-port 100BASE-FX Fast Ethernet Layer 2 Switching Module  
(Model Number 3CB9LF10MC) has ten 100 Mbps Ethernet fiber-optic  
ports with SC connectors on its front panel and two 1-Gigabit ports  
on the back for connection to the chassis backplane.  
The 20-port 10/100BASE-TX Fast Ethernet Layer 2 Switching Module  
(Model Number 3CB9LF20R) has twenty 10/100 Mbps RJ-45 ports on  
its front panel and two 1-Gigabit ports on the back for connection to  
the chassis backplane.  
Each of these FEN Switching Modules operates as a Layer 2 switch and  
occupies a single switching module slot in the CoreBuilder 9000 7-slot  
chassis, 8-slot chassis, or 16-slot chassis.  
Key Features The 10/100BASE-TX and 100BASE-FX FEN Switching Modules support  
the following key features:  
Hot-swapping of modules  
Management using the Administration Console  
(a command line interface), the Web Management suite of  
applications with an Internet browser, or SNMP-based applications  
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
3
Audience Description This guide is intended for trained technical personnel only. Do not  
attempt to install, remove, or replace the 10/100BASE-TX or 100BASE-FX  
FEN Switching Modules if you have not had the proper training from  
3Com. For training information in the United States and Canada, call  
1-800-NET-3COM. For the numbers to call in other locations, visit the  
3Com Web site:  
Safety Precautions When you handle components in a CoreBuilder 9000 system, be sure  
that you follow all safety precautions. To avoid electric shocks, burns, or  
equipment damage, read and follow these warnings:  
WARNING: Allow only trained service personnel to install, remove, or  
replace any module in the chassis.  
WARNING: Hazardous energy exists within the system. Use extreme  
caution when you install, remove, or replace any module in the chassis.  
When the system is on:  
Never insert metal objects such as a screwdriver or a finger with  
jewelry into open module slots.  
Do not touch any connections within the chassis with your hands or  
fingers.  
WARNING: To ensure optical safety when installing a FEN Switching  
Module, comply with the following precaution:  
Although the data communication LEDs used in this product meet the  
regulatory requirements for casual exposure to the eye, as with any  
source of bright light, it is advised that you do not look into the light  
source.  
LED Safety Information: IEC 825 and EN60825, Class 1 LED Device. For  
connection only to Class 1 LED Devices.  
CLASS 1  
LED PRODUCT  
 
4
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
ESD Safety Information  
Electrostatic discharge (ESD) can damage components of the module.  
ESD, which occurs when a module is improperly handled, can cause  
complete or intermittent failures.  
CAUTION: To prevent ESD-related damage:  
Always wear an ESD wrist strap (not provided) when you handle a  
module, ensuring that the strap makes good skin contact and is  
properly grounded.  
Keep the module in its antistatic bag until you are ready to install it.  
Handling Precautions When you handle a module, follow these precautions:  
Always handle the module by the front panel only.  
Do not touch the components, pins, leads, or solder connections.  
Do not twist or otherwise force the module into the chassis when you  
insert it into the module guides.  
Before you push the module into the chassis, verify that the module  
ejector handles are open.  
When you slide the module into the 7-slot chassis, match the left and  
right module guides. In the 8-slot chassis or 16-slot chassis, match the  
upper and lower module guides.  
For details, see “Installation Prerequisites” and “Installing the Module”  
later in this guide.  
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
5
Unpacking Use the following procedure when you unpack a FEN Switching Module:  
Instructions  
1 Verify that the module is the correct product by matching the 3C number  
that is listed on the shipping box label to the 3C number that you ordered  
(Model Number 3CB9LF10MC for the 10-port 100BASE-FX Fast Ethernet  
Layer 2 Switching Module or Model Number 3CB9LF20R for the 20-port  
10/100BASE-TX Fast Ethernet Layer 2 Switching Module).  
2 Remove the module, in its antistatic bag, from the shipping box.  
3 Observing the caution instructions, remove the module from its antistatic  
bag and inspect it for physical damage.  
CAUTION: Handle the module only by the front panel. Do not touch any  
components, pins, leads, or solder connections.  
If the module appears to be damaged, replace it in the antistatic bag, put  
it back in the shipping box, and contact your network supplier.  
4 Verify that the box also contains:  
CoreBuilder 9000 Release Notes for the Fast Ethernet and Gigabit  
Ethernet Layer 2 Switching Modules  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet  
Layer 2 Switching Modules Quick Start Guide for the  
CoreBuilder 9000 Enterprise Switch (this guide)  
If the listed contents are not in your shipping box, contact your network  
supplier.  
All shipping boxes are reusable. After you remove the contents, replace  
the packing materials in the box and store it for future use.  
 
6
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Installation Before you install a module, make the following preparations:  
Prerequisites  
Verify that the chassis is properly installed in a rack, on a table, or on a  
shelf, according to the instructions in either of these guides:  
7-Slot Chassis Quick Installation Guide for the CoreBuilder 9000  
Enterprise Switch  
Chassis Quick Installation Guide for the CoreBuilder 9000  
Enterprise Switch 8-slot Chassis and 16-slot Chassis.  
Have a flat-blade torque screwdriver available to secure the module to  
the chassis after you install it.  
Read the CoreBuilder 9000 Release Notes for the Fast Ethernet and  
Gigabit Ethernet Layer 2 Switching Modules for important information  
about installing and upgrading modules in an existing chassis or a new  
chassis.  
CAUTION: All modules in a CoreBuilder 9000 chassis must operate at  
compatible software levels. You must verify the software release on all  
new and existing modules in your chassis and upgrade as necessary. See  
the CoreBuilder 9000 Release Notes for the Fast Ethernet and Gigabit  
Ethernet Layer 2 Switching Modules for a module software compatibility  
requirements table, mandatory upgrade procedures, and other important  
information.  
Module Placement Note the following chassis slot restrictions and recommendations when  
in the Chassis you choose a chassis slot for the 10-port 100BASE-FX Fast Ethernet  
Switching Module or the 20-port 10/100BASE-TX Fast Ethernet  
Switching Module:  
In the 7-slot chassis:  
Do not install the module in slot 7. This slot is reserved for a  
Gigabit Ethernet (GEN) Switch Fabric Module.  
Install the module in slot 1, 2, 3, 4, 5, or 6.  
In the 8-slot chassis:  
Do not install the module in slot 7 or slot 8. These slots are  
reserved for GEN Switch Fabric Modules.  
Install the FEN Switching Module in slot 1, 2, 3, 4, 5, or 6.  
 
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
7
In the 16-slot chassis:  
Do not install the module in slot 8 or slot 9. These slots are  
reserved for GEN Switch Fabric Modules.  
Install the module in slot 1, 2, 3, 4, 5, 6, 7, 10, 11, or 12.  
3Com recommends that you do not install the module in slot 13,  
14, 15, or 16 because these slots have only one connection to the  
GEN Switch Fabric Module.  
Table 1, Table 2, and Table 3 list the relationship between the  
following:  
24-port GEN Switch Fabric Module (SFM) (Model Number 3CB9FG24  
10-port 100BASE-FX FEN Switching Module  
Switching module slots in the 7-slot chassis, 8-slot chassis, and 16-slot  
chassis, respectively  
Table 4, Table 5, and Table 6 list the relationship between the following:  
24-port GEN Switch Fabric Module (SFM)  
20-port 10/100BASE-TX FEN Switching Module  
Switching module slots in the 7-slot chassis, 8-slot chassis, and 16-slot  
chassis, respectively  
Table 7 and Table 8 list the relationship between the following:  
9-port GEN Switch Fabric Module (SFM) (Model Number 3CB9FG9)  
10-port 100BASE-FX FEN Switching Module  
Switching module slots in the 7-slot chassis and 8-slot chassis,  
respectively  
Table 9 and Table 10 list the relationship between the following:  
9-port GEN Switch Fabric Module (SFM)  
20-port 10/100BASE-TX FEN Switching Module  
Switching module slots in the 7-slot chassis and 8-slot chassis,  
respectively  
Use the table information to help select a slot for your module, as well as  
administer the system after you have completed the installation.  
 
8
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Mapping the 24-port GEN SFM and the 10-port FEN Switching Module to the 7-slot Chassis  
Table 1  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
10-port Switching  
SFM Backplane Port  
SFM LED Numbers  
Assigned to Backplane  
Port Numbers  
Module Backplane Numbers Assigned to  
Port Numbers  
Chassis Slot  
1
2
3
4
5
6
7
4; up to 2 can be  
accessed by this  
module  
11  
12  
1
2
1
2
4; up to 2 can be  
accessed by this  
module  
11  
12  
5
6
3
4
4; up to 2 can be  
accessed by this  
module  
11  
12  
9
5
6
10  
4; up to 2 can be  
accessed by this  
module  
11  
12  
13  
14  
7
8
4; up to 2 can be  
accessed by this  
module  
11  
12  
17  
18  
9
10  
4; up to 2 can be  
accessed by this  
module  
11  
12  
21  
22  
11  
12  
Reserved for an SFM Not applicable  
Not applicable  
Not applicable  
 
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
9
Mapping the 24-port GEN SFM and the 10-port FEN Switching Module to the 8-slot Chassis  
Table 2  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
10-port Switching  
SFM Backplane Port  
SFM LED Numbers  
Assigned to Backplane  
Port Numbers  
Module Backplane Numbers Assigned to  
Port Numbers  
Chassis Slot  
1
2
3
4
5
6
4; up to 2 can be  
accessed by this  
module  
11  
12  
1
2
1
2
4; up to 2 can be  
accessed by this  
module  
11  
12  
5
6
3
4
4; up to 2 can be  
accessed by this  
module  
11  
12  
9
5
6
10  
4; up to 2 can be  
accessed by this  
module  
11  
12  
13  
14  
7
8
4; up to 2 can be  
accessed by this  
module  
11  
12  
17  
18  
9
10  
4; up to 2 can be  
accessed by this  
module  
11  
12  
21  
22  
11  
12  
7
8
Reserved for an SFM Not applicable  
Reserved for an SFM Not applicable  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
 
 
10  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Mapping the 24-port GEN SFM and the 10-port FEN Switching Module to the 16-slot Chassis  
Table 3  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
10-port Switching  
SFM Backplane Port  
SFM LED Numbers  
Assigned to Backplane  
Port Numbers  
Module Backplane Numbers Assigned to  
Port Numbers  
Chassis Slot  
1
2
3
4
5
6
7
2
2
2
2
2
2
2
11  
12  
11  
12  
11  
12  
11  
12  
11  
12  
11  
12  
11  
12  
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10  
10  
11  
11  
12  
12  
13  
13  
14  
14  
8
Reserved for an SFM Not applicable  
Reserved for an SFM Not applicable  
Not applicable  
Not applicable  
9
Not applicable  
Not applicable  
10  
2
2
2
11  
12  
11  
12  
11  
12  
11  
11  
11  
11  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
11  
12  
13  
14  
15  
16  
1
1
1
1
 
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
11  
Mapping the 24-port GEN SFM and the 20-port FEN Switching Module to the 7-slot Chassis  
Table 4  
20-port Switching  
Module  
Backplane Port  
Numbers  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
SFM Backplane Port  
Numbers Assigned to  
Chassis Slot  
SFM LED Numbers  
Assigned to Backplane  
Port Numbers  
1
2
3
4
5
6
7
4; up to 2 can be  
accessed by this  
module  
21  
22  
1
2
1
2
4; up to 2 can be  
accessed by this  
module  
21  
22  
5
6
3
4
4; up to 2 can be  
accessed by this  
module  
21  
22  
9
5
6
10  
4; up to 2 can be  
accessed by this  
module  
21  
22  
13  
14  
7
8
4; up to 2 can be  
accessed by this  
module  
21  
22  
17  
18  
9
10  
4; up to 2 can be  
accessed by this  
module  
21  
22  
21  
22  
11  
12  
Reserved for an SFM Not applicable  
Not applicable  
Not applicable  
 
 
12  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Mapping the 24-port GEN SFM and the 20-port FEN Switching Module to the 8-slot Chassis  
Table 5  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
20-port Switching SFM Backplane Port  
Module Backplane Numbers Assigned to  
SFM LED Numbers  
Assigned to Backplane  
Port Numbers  
Port Numbers  
Chassis Slot  
1
2
3
4
5
6
4; up to 2 can be  
accessed by this  
module  
21  
22  
1
2
1
2
4; up to 2 can be  
accessed by this  
module  
21  
22  
5
6
3
4
4; up to 2 can be  
accessed by this  
module  
21  
22  
9
5
6
10  
4; up to 2 can be  
accessed by this  
module  
21  
22  
13  
14  
7
8
4; up to 2 can be  
accessed by this  
module  
21  
22  
17  
18  
9
10  
4; up to 2 can be  
accessed by this  
module  
21  
22  
21  
22  
11  
12  
7
8
Reserved for an SFM Not applicable  
Reserved for an SFM Not applicable  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
 
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
13  
Mapping the 24-port GEN SFM and the 20-port FEN Switching Module to the 16-slot Chassis  
Table 6  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
20-port Switching SFM Backplane Port  
Module Backplane Numbers Assigned to  
SFM LED Numbers  
Assigned to Backplane  
Port Numbers  
Port Numbers  
Chassis Slot  
1
2
3
4
5
6
7
2
2
2
2
2
2
2
21  
22  
21  
22  
21  
22  
21  
22  
21  
22  
21  
22  
21  
22  
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10  
10  
11  
11  
12  
12  
13  
13  
14  
14  
8
Reserved for an SFM Not applicable  
Reserved for an SFM Not applicable  
Not applicable  
Not applicable  
9
Not applicable  
Not applicable  
10  
2
2
2
21  
22  
21  
22  
21  
22  
21  
21  
21  
21  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
11  
12  
13  
14  
15  
16  
1
1
1
1
 
 
14  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Mapping the 9-port GEN SFM and the 10-port FEN Switching Module to the 7-slot Chassis  
Table 7  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
10-port Switching SFM Backplane Port  
Module Backplane Numbers Assigned to  
SFM LED Numbers  
Assigned to Backplane  
Port Numbers  
Port Numbers  
Chassis Slot  
1
2
3
4
5
6
7
1
11  
1
1
1
11  
2
2
1
11  
3
3
1
11  
4
4
1
11  
5
5
1
11  
6
6
Reserved for an SFM  
Not applicable  
Not applicable  
Not applicable  
Mapping the 9-port GEN SFM and the 10-port FEN Switching Module to the 8-slot Chassis  
Table 8  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
10-port Switching SFM Backplane Port  
Module Backplane Numbers Assigned to Assigned to Backplane  
SFM LED Numbers  
Port Numbers  
Chassis Slot  
Port Numbers  
1
2
3
4
5
6
7
8
1
11  
1
1
1
11  
2
2
1
11  
3
3
1
11  
4
4
1
11  
5
5
1
11  
6
6
Reserved for an SFM  
Reserved for an SFM  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
 
   
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
15  
Mapping the 9-port GEN SFM and the 20-port FEN Switching Module to in the 7-slot Chassis  
Table 9  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
20-port Switching SFM Backplane Port  
SFM LED Numbers  
Module Backplane Numbers Assigned to Assigned to Backplane  
Port Numbers  
Chassis Slot  
Port Numbers  
1
2
3
4
5
6
7
1
21  
1
1
1
21  
2
2
1
21  
3
3
1
21  
4
4
1
21  
5
5
1
21  
6
6
Reserved for an SFM  
Not applicable  
Not applicable  
Not applicable  
Mapping the 9-port GEN SFM and the 20-port FEN Switching Module to the 8-slot Chassis  
Table 10  
Chassis  
Slot  
Number  
Number of SFM  
Backplane Ports  
Allocated to Slot  
20-port Switching  
Module Backplane  
Port Numbers  
SFM Backplane Port  
Numbers Assigned to Assigned to Backplane  
Chassis Slot  
SFM LED Numbers  
Port Numbers  
1
2
3
4
5
6
7
8
1
21  
1
1
1
21  
2
2
1
21  
3
3
1
21  
4
4
1
21  
5
5
1
21  
6
6
Reserved for an SFM  
Reserved for an SFM  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
Not applicable  
 
   
16  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Installing the Module To install a FEN Switching Module:  
1 Before you start the installation process, read and follow the instructions  
in “Safety Precautions,” “Handling Precautions,” and “Installation  
Prerequisites” earlier in this guide.  
2 Select a chassis slot for your module, following the restrictions and  
recommendations in “Module Placement in the Chassis” earlier in this  
guide.  
3 To expose a slot for the module, remove the blank faceplate.  
Save this faceplate in case you need it in the future. Empty slots must be  
covered to ensure proper airflow and cooling in the chassis.  
3Com recommends that you remove the faceplate only for the slot where  
you intend to install an individual module; leave the remaining faceplates  
in the chassis.  
4 Open the module ejector handles.  
5 Begin to insert the module:  
In the 7-slot chassis, hold the module horizontally with the LEDs to the  
left and begin to insert the module using the guides on the left and  
the right of the slot. Figure 2 shows the module position in a 7-slot  
chassis.  
In the 8-slot chassis and 16-slot chassis, hold the module vertically  
with the LEDs at the top and begin to insert the module using the  
guides on the top and the bottom of the slot. Figure 3 shows the  
module position in a 16-slot chassis. The module position is the same  
in an 8-slot chassis.  
CAUTION: Do not twist or bend the module when you insert it.  
6 Slide the module into the chassis by pushing firmly on the two ends of  
the front panel near the ejector handles.  
WARNING: Hazardous energy exists inside the chassis. Do not place  
hands or objects into the chassis or touch any components on an inserted  
module.  
 
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
17  
Installing a FEN Switching Module into a 7-Slot Chassis  
Figure 2  
20-port Fast Ethernet  
Switching Module  
CoreBuilder® 9000  
9
8
C
2
1
4
1
0
2
2
2
4
2
SE  
2
1
4
3
6
5
8
7
10  
16  
18  
7
I
9
1
1
3
1
9
1
1
2
3
2
15  
17  
PR  
4
5
1
T
A
T
S
D
O
7
M
1
2
3
4
5
6
4
3
2
1
Spring-loaded  
screws  
 
 
18  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Installing a FEN Switching Module into a 16-Slot Chassis  
Figure 3  
Spring-loaded  
screw  
®
R
CoreBuilder 9000  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
20-port  
Fast Ethernet  
Switching  
Module  
3CB9FG24  
3CB9FG24  
3CB9LF20R  
Spring-loaded  
screw  
 
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
19  
7 To engage the module with the backplane, use both hands to perform  
the following steps:  
a Push firmly at the two ends of the front panel near the ejector handles  
until you feel the module connectors make firm contact with the  
backplane connectors.  
b Put your left thumb on the left or top ejector handle and your right  
thumb on the right or bottom ejector handle. Simultaneously, push  
the ejector handles in towards the front panel until each handle is  
parallel with the front panel.  
You feel a slight resistance as the connectors fully engage.  
CAUTION: If there is too much resistance when you try to close the  
ejector handles, the module backplane connector may not be aligned.  
Forcing the module into place can damage the module connectors and  
backplane connectors. If necessary, remove and reinsert the module,  
ensuring that the connectors are properly aligned. Do not tighten the  
spring-loaded screws to seat the module.  
8 To secure the module in the chassis, tighten the spring-loaded screws to a  
torque specification of 3 to 5 inch-pounds.  
CAUTION: Verify that the module screws are properly aligned with the  
threaded holes in the chassis. If the screws are not aligned when you  
tighten them, you may strip the threads and make it impossible to secure  
the module.  
To ensure that you tighten screws to torque specification, use a torque  
screwdriver.  
WARNING: To ensure adequate cooling airflow and continued product  
safety agency compliance, install blank faceplates over all empty slots.  
If the chassis is powered on, the module initialization process begins.  
 
20  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Verifying Module The 10-port 100BASE-FX FEN Switching Module has 10 Port Status LEDs  
Operation and the 20-port 10/100BASE-TX FEN Switching Module has 20 Port  
Status LEDs. Each module has one Module Status LED.  
Watch the LEDs during the system power-on diagnostics test to verify  
proper module operation:  
On the Module Status LED, the normal power-on test sequence is  
Green – Yellow – Green – Flashing Green (while running the  
diagnostic test) – Green  
If the Module Status LED is Yellow after the diagnostics run, the module  
has failed.  
The Port Status LEDs are tested during the diagnostic test. The normal  
test sequence is Yellow – Green – Off  
Table 11 describes LED colors and definitions.  
Module and Port Status LED Indicators  
Table 11  
LED  
State or Color Definition  
Module Status  
Green  
Power is on (normal operation).  
Flashing Green Diagnostics or software download is in  
progress.  
Yellow  
Off  
Diagnostic failure.  
After initial insertion or module reset, the  
LED remains unlit for approximately 3  
seconds. Otherwise, an unlit LED  
indicates that the module is not receiving  
power.  
Port Status  
Green  
Port is enabled and link is up.  
Flashing Green Port is receiving or transmitting packets.  
Yellow  
Off  
Module or port is malfunctioning.  
Port is disabled or link is down.  
 
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
21  
Managing the You configure and manage a FEN Switching Module using several  
Module interfaces. The following sections describe two of the interfaces.  
Administration Console  
The Administration Console is the embedded menu-driven command line  
interface that you access from a terminal or through terminal emulation  
software.  
To manage the module from the Administration Console:  
1 Log in to the EME.  
For information about how to log in to the EME, see the CoreBuilder  
9000 Enterprise Management Engine User Guide.  
2 At the EME prompt, enter:  
connect <slot>.1  
where <slot> is the chassis slot number of the module that you want to  
manage, and the number after the decimal point is a subslot number,  
which is always 1.  
The top level of the Administration Console menu for the module  
appears.  
3 Enter command strings to manage the module. For example, to display a  
module baseline, enter:  
module baseline display  
For information about the Administration Console module commands,  
see the Command Reference Guide.  
Web Management  
Web Management applications are an embedded part of the system.  
They include WebConsole, DeviceView, and Performance monitoring  
tools. Additional installable applications include online Help.  
After you have set up the IP address for your system, you can access the  
Web Management applications directly in your Web browser by entering  
the IP address.  
For information about setting up your IP address, see the Enterprise  
Management Engine Quick Start Guide for the CoreBuilder 9000  
Enterprise Switch. For additional information about Web Management,  
see the Web Management User Guide for the CoreBuilder 9000  
Enterprise Switch.  
 
22  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
Module The following tables list specifications for the 10-port 100BASE-FX and  
Specifications 20-port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules:  
Cabling Requirements  
Module  
Required Cable Type  
Maximum Segment Length  
100BASE-FX  
(3CB9LF10MC)  
Multimode fiber  
62.5/125 micron  
Half-duplex mode: 400 m (1312 ft  
Full-duplex mode: 2 km (1.2 mi)  
10/100BASE-TX  
(3CB9LF20R)  
UTP Category 5  
Up to 100 m (328 ft)  
Environmental Requirements  
Operating temperature  
Operating humidity  
Storage temperature  
Storage humidity  
0 to 50 °C (32 to 122 °F)  
10% to 90% relative humidity, noncondensing  
–40 to 66 °C (–40 to 151 °F)  
5% to 95% relative humidity, noncondensing  
Physical Specifications  
Module  
Dimensions  
Weight  
100BASE-FX  
(3CB9LF10MC)  
25.4 mm x 340.36 mm x 388.112 mm  
(1 in. x 13.4 in. x 15.28 in.)  
1.135 kg  
(2.5 lb)  
10/100BASE-TX  
(3CB9LF20R)  
25.4 mm x 340.36 mm x 388.112 mm  
(1 in. x 13.4 in. x 15.28 in.)  
1.1804 kg  
(2.6 lb)  
Power Specifications  
Module  
Voltage  
Wattage  
100BASE-FX  
+5.2 V  
25 W  
(3CB9LF10MC)  
+3.5 V  
+12 V  
33 W  
2 W  
Total Wattage = 60  
10/100BASE-TX  
(3CB9LF20R)  
+5.2 V  
28 W  
+3.5 V  
+12 V  
41 W  
2 W  
Total Wattage = 71  
 
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
23  
Regulatory Compliance  
Safety  
Emissions  
CSA 22.2 No. 950  
FCC Part 15 Class A  
EN 60950  
ICES003 Class A  
VCCI Class A  
IEC 60950 (formerly IEC 950)  
UL 1950  
EN 55022 Class A  
EN 50082-1  
EN 60825 -1, -2  
CE Mark  
AS3548 (C-Tick Mark)  
CISPR 22 Class A  
CE Mark  
Related For detailed information about using and managing the FEN Switching  
CoreBuilder 9000 Modules, see the following documents:  
Documents  
CoreBuilder 9000 Implementation Guide  
Command Reference Guide  
CoreBuilder 9000 Enterprise Management Engine User Guide  
Web Management User Guide for the CoreBuilder 9000 Enterprise  
Switch  
For the software code installation procedure as well as known problem  
information for this module, see the CoreBuilder 9000 Release Notes for  
the Fast Ethernet and Gigabit Ethernet Layer 2 Switching Modules.  
For information about installing and powering on the system, see the  
following documents:  
CoreBuilder 9000 Enterprise Switch Getting Started Guide  
7-Slot Chassis Quick Installation Guide for the CoreBuilder 9000  
Enterprise Switch  
Chassis Quick Installation Guide for the CoreBuilder 9000 Enterprise  
Switch 8-slot Chassis and 16-slot Chassis  
7-Slot Chassis Power Supply Installation Guide for the  
CoreBuilder 9000 Enterprise Switch  
Power Supply Installation Guide for the CoreBuilder 9000 Enterprise  
Switch 8-slot Chassis and 16-slot Chassis  
 
24  
10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide  
You can view and print these and other current CoreBuilder 9000  
documents from the following sources:  
3Com Web site  
CoreBuilder 9000 Documentation CD-ROM  
This CD-ROM is included in the chassis shipping box. You can also  
order the CD-ROM separately (Order Number 3CB9DB).  
 
3Com Corporation L  
W
ARRANTY  
IMITED  
10-Port 100BASE-FX Fast Ethernet Layer 2 Switching Module (Model Number 3CB9LF10MC) and 20-Port 10/100BASE-TX  
Fast Ethernet Layer 2 Switching Module (Model Number 3CB9LF20R) for the CoreBuilder® 9000 Enterprise Switch  
HARDWARE  
3Com warrants to the end user (“Customer”) that this hardware product will be free from defects in workmanship  
and materials, under normal use and service, for one (1) year from the date of purchase from 3Com or its authorized  
reseller.  
3Com’s sole obligation under this express warranty shall be, at 3Com’s option and expense, to repair the defective  
product or part, deliver to Customer an equivalent product or part to replace the defective item, or if neither of the  
two foregoing options is reasonably available, 3Com may, in its sole discretion, refund to Customer the purchase  
price paid for the defective product. All products that are replaced will become the property of 3Com. Replacement  
products may be new or reconditioned. 3Com warrants any replaced or repaired product or part for ninety (90) days  
from shipment, or the remainder of the initial warranty period, whichever is longer.  
SOFTWARE  
3Com warrants to Customer that each software program licensed from it will perform in substantial conformance to  
its program specifications, for a period of ninety (90) days from the date of purchase from 3Com or its authorized  
reseller. 3Com warrants the media containing software against failure during the warranty period. No updates are  
provided. 3Com’s sole obligation under this express warranty shall be, at 3Com’s option and expense, to refund the  
purchase price paid by Customer for any defective software product, or to replace any defective media with software  
which substantially conforms to applicable 3Com published specifications. Customer assumes responsibility for the  
selection of the appropriate applications program and associated reference materials. 3Com makes no warranty or  
representation that its software products will meet Customer’s requirements or work in combination with any  
hardware or applications software products provided by third parties, that the operation of the software products  
will be uninterrupted or error free, or that all defects in the software products will be corrected. For any third-party  
products listed in the 3Com software product documentation or specifications as being compatible, 3Com will make  
reasonable efforts to provide compatibility, except where the noncompatibility is caused by a “bug” or defect in the  
third party’s product or from use of the software product not in accordance with 3Com’s published specifications or  
user manual.  
THIS 3COM PRODUCT MAY INCLUDE OR BE BUNDLED WITH THIRD-PARTY SOFTWARE, THE USE OF WHICH IS  
GOVERNED BY A SEPARATE END-USER LICENSE AGREEMENT. THIS 3COM WARRANTY DOES NOT APPLY TO SUCH  
THIRD-PARTY SOFTWARE. FOR THE APPLICABLE WARRANTY, PLEASE REFER TO THE END-USER LICENSE  
AGREEMENT GOVERNING THE USE OF SUCH SOFTWARE.  
YEAR 2000 WARRANTY  
In addition to the Hardware Warranty and Software Warranty stated above, 3Com warrants that each product sold  
or licensed to Customer on and after January 1, 1998, that is date sensitive will continue performing properly with  
regard to such date data on and after January 1, 2000, provided that all other products used by Customer in  
connection or combination with the 3Com product, including hardware, software, and firmware, accurately  
exchange date data with the 3Com product, with the exception of those products identified at 3Com’s Web site,  
stated to meet this standard does not perform properly with regard to such date data on and after January 1, 2000,  
and Customer notifies 3Com before the later of April 1, 2000, or ninety (90) days after purchase of the product from  
3Com or its authorized reseller, 3Com shall, at its option and expense, provide a software update which would effect  
the proper performance of such product, repair such product, deliver to Customer an equivalent product to replace  
such product, or, if none of the foregoing is feasible, refund to Customer the purchase price paid for such product.  
Any software update or replaced or repaired product will carry a Year 2000 Warranty for ninety (90) days after  
purchase or until April 1, 2000, whichever is later.  
OBTAINING WARRANTY  
SERVICE  
Customer must contact a 3Com Corporate Service Center or an Authorized 3Com Service Center within the  
applicable warranty period to obtain warranty service authorization. Dated proof of purchase from 3Com or its  
authorized reseller may be required. Products returned to 3Com’s Corporate Service Center must be preauthorized  
by 3Com with a Return Material Authorization (RMA) number or User Service Order (USO) number marked on the  
outside of the package, and sent prepaid and packaged appropriately for safe shipment, and it is recommended that  
they be insured or sent by a method that provides for tracking of the package. Responsibility for loss or damage does  
not transfer to 3Com until the returned item is received by 3Com. The repaired or replaced item will be shipped to  
Customer, at 3Com’s expense, not later than thirty (30) days after 3Com receives the defective product.  
3Com shall not be responsible for any software, firmware, information, or memory data of Customer contained in,  
stored on, or integrated with any products returned to 3Com for repair, whether under warranty or not.  
Dead- or Defective-on-Arrival  
. In the event a product completely fails to function or exhibits a defect in materials or  
workmanship within the first forty-eight (48) hours of installation but no later than thirty (30) days after the date of  
purchase, and this is verified by 3Com, it will be considered dead- or defective-on-arrival (DOA) and a replacement  
shall be provided by advance replacement. The replacement product will normally be shipped not later than three (3)  
business days after 3Com’s verification of the DOA product, but may be delayed due to export or import procedures.  
The shipment of advance replacement products is subject to local legal requirements and may not be available in all  
locations. When an advance replacement is provided and Customer fails to return the original product to 3Com  
within fifteen (15) days after shipment of the replacement, 3Com will charge Customer for the replacement product,  
at list price.  
 
Advance Replacement  
is provided for ninety (90) days, after which time it may be available for a specified fee. 3Com  
will make commercially reasonable efforts to ship the replacement product not later than five (5) business days after  
receiving the request for advance replacement, but may be delayed due to product availability or export or import  
procedures. The shipment of advance replacement products is subject to local legal requirements and may not be  
available in all locations. When an advance replacement is provided and Customer fails to return the original product  
to 3Com within fifteen (15) days after shipment of the replacement, 3Com will charge Customer for the  
replacement, at list price. This advance replacement is different from the fee-based Advance Hardware Replacement  
Service, which is available as a contracted service offering.  
INCLUDED SERVICES:  
Telephone Support,  
with coverage for basic troubleshooting only, will be provided for ninety (90) days from the date  
of purchase, on a commercially reasonable efforts basis. Please refer to the Technical Support appendix in the Getting  
Started Guide for telephone numbers.  
3Com’s Web and Bulletin Board Services  
provide 3Knowledgebase, bug tracking, documentation, release notes, and  
some software maintenance releases at no charge.  
WARRANTIES EXCLUSIVE  
IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR BREACH OF  
THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S  
OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE  
AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR  
BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF  
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, SATISFACTORY QUALITY, CORRESPONDENCE WITH  
DESCRIPTION, AND NONINFRINGEMENT, ALL OF WHICH ARE EXPRESSLY DISCLAIMED. 3COM NEITHER ASSUMES  
NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE,  
INSTALLATION, MAINTENANCE, OR USE OF ITS PRODUCTS.  
3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE  
ALLEGED DEFECT OR MALFUNCTION IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER’S OR  
ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO  
OPEN, REPAIR, OR MODIFY THE PRODUCT, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR  
BY ACCIDENT, FIRE, LIGHTNING, POWER CUTS OR OUTAGES, OTHER HAZARDS, OR ACTS OF GOD.  
LIMITATION OF LIABILITY  
TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY,  
WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL,  
INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF  
BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION  
WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS  
PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH  
DAMAGES, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT  
3COM’S OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY  
PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.  
DISCLAIMER  
Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the limitation of  
incidental or consequential damages for certain products supplied to consumers, or the limitation of liability for  
personal injury, so the above limitations and exclusions may be limited in their application to you. When the implied  
warranties are not allowed to be excluded in their entirety, they will be limited to the duration of the applicable  
written warranty. This warranty gives you specific legal rights which may vary depending on local law.  
GOVERNING LAW  
This Limited Warranty shall be governed by the laws of the State of California, U.S.A., excluding its conflicts of laws  
principles and excluding the United Nations Convention on Contracts for the International Sale of Goods.  
3Com Corporation  
, 5400 Bayfront Plaza, P.O. Box 58145, Santa Clara, CA 95052-8145 (408) 326-5000  
 
EMISSIONS COMPLIANCE  
STATEMENTS FOR CLASS A  
PRODUCTS  
Federal Communications This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15  
Commission Notice of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the  
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio  
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful  
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful  
interference, in which case the user will be required to correct the interference at his or her own expense.  
Canadian Emissions This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.  
Requirements  
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du  
Canada.  
VCCI Class A Compliance  
This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information  
Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio disturbance may arise.  
When such trouble occurs, the user may be required to take corrective actions.  
EMC DIRECTIVE  
STATEMENT  
EMC Directive Compliance This equipment was tested and found to conform to the Council Directive 89/336/EEC for electromagnetic  
compatibility. Conformity with this Directive is based upon compliance with the following harmonized standards:  
EN 55022  
Limits and Methods of Measurement of Radio Interference  
Electromagnetic Compatibility Generic Immunity Standard:  
Residential, Commercial, and Light Industry  
EN 50082-1  
Warning  
:
This is a Class A product. In a domestic environment, this product may cause radio interference, in which  
case you may be required to take adequate measures.  
LOW VOLTAGE DIRECTIVE  
STATEMENT  
Low Voltage Directive This equipment was tested and found to conform to the Council Directive 72/23/EEC for safety of electrical  
Compliance equipment. Conformity with this Directive is based upon compliance with the following harmonized standard:  
EN 60950  
Safety of Information Technology Equipment  
GENERAL APPROVAL  
STATEMENT FOR UK  
UK General Approval Statement This equipment is manufactured to the international Safety Standard EN60950 and is approved in the UK under the  
General Approval Number NS/G/12345/J/100003 for indirect connection to the public telecommunication network.  
AUSTRALIAN EMC  
FRAMEWORKS STATEMENT  
Australian EMC Frameworks This product conforms to the EMC Frameworks and meets the Class A limits of AS3548.  
Compliance  
 
3Com Corporation  
5400 Bayfront Plaza  
Santa Clara, California  
95052-8145  
Copyright © 1999, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in  
any form or by any means or used to make any derivative work (such as translation, transformation, or  
adaptation) without written permission from 3Com Corporation. 3Com Corporation reserves the right to revise  
this documentation and to make changes in content from time to time without obligation on the part of  
3Com Corporation to provide notification of such revision or change.  
3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied  
or expressed, including, but not limited to, the implied warranties, terms, or conditions of merchantability,  
satisfactory quality, and fitness for a particular purpose. 3Com may make improvements or changes in the  
product(s) and/or the program(s) described in this documentation at any time.  
3Com registered trademarks are registered in the United States and may or may not be registered in other  
countries. 3Com, the 3Com logo, and CoreBuilder are registered trademarks of 3Com Corporation.  
All other company and product names may be trademarks of the respective companies with which they are  
associated.  
Part No. 10013072  
Published August 1999  
 

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