Table 1 – 3Com 100BASE-FX User Manual
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10-Port 100BASE-FX and 20-Port 10/100BASE-TX Fast Ethernet Layer 2 Switching Modules Quick Start Guide
Table 1 Mapping the 24-port GEN SFM and the 10-port FEN Switching Module to the 7-slot Chassis
Chassis
Slot
Number
Number of SFM
Backplane Ports
Allocated to Slot
10-port Switching
Module Backplane
Port Numbers
SFM Backplane Port
Numbers Assigned to
Chassis Slot
SFM LED Numbers
Assigned to Backplane
Port Numbers
1
4; up to 2 can be
accessed by this
module
11
12
1
2
1
2
2
4; up to 2 can be
accessed by this
module
11
12
5
6
3
4
3
4; up to 2 can be
accessed by this
module
11
12
9
10
5
6
4
4; up to 2 can be
accessed by this
module
11
12
13
14
7
8
5
4; up to 2 can be
accessed by this
module
11
12
17
18
9
10
6
4; up to 2 can be
accessed by this
module
11
12
21
22
11
12
7
Reserved for an SFM Not applicable
Not applicable
Not applicable