3Com CoreBuilder 9000 Quick Start Manual page 9

20-Port 100BASE-FX (MT-RJ) Fast Ethernet Layer 2 Switching Module Quick Start Guide
Table 3 Mapping the 24-port Gigabit Ethernet Switch Fabric Module (SFM) and the 20-port Switching Module
to the 16-slot Chassis
Number of SFM
Chassis Slot Backplane Ports
No. Allocated to Slot
1 2
2 2
3 2
4 2
5 2
6 2
7 2
8 Reserved for an SFM Not applicable
9 Reserved for an SFM Not applicable
10 2
11 2
12 2
13 1
14 1
15 1
16 1
20-port Switching SFM Backplane Port
Module Backplane Numbers Assigned
Port Numbers to Chassis Slot
21 1
22 2
21 3
22 4
21 5
22 6
21 7
22 8
21 9
22 10
21 11
22 12
21 13
22 14
Not applicable
Not applicable
21 15
22 16
21 17
22 18
21 19
22 20
21 21
21 22
21 23
21 24
SFM LED Numbers
Assigned to Backplane
Port Numbers
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Not applicable
Not applicable
15
16
17
18
19
20
21
22
23
24
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