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Table 2 Mapping the 24-port GEN SFM and the 9-port GEN Switching Module to the 8-slot Chassis
Number of SFM
Chassis Slot
Backplane Ports
Number
Allocated to Slot
1
4; only 3 are accessed
by this module
2
4; only 3 are accessed
by this module
3
4; only 3 are accessed
by this module
4
4; only 3 are accessed
by this module
5
4; only 3 are accessed
by this module
6
4; only 3 are accessed
by this module
7
Reserved for an SFM
8
Reserved for an SFM
9-Port 1000BASE-SX Gigabit Ethernet Layer 2 Switching Module Quick Start Guide
9-port Switching
Module Backplane
Port Numbers
10
11
12
10
11
12
10
11
12
10
11
12
10
11
12
10
11
12
Not applicable
Not applicable
SFM Backplane Port
SFM LED Numbers
Numbers Assigned
Assigned to Backplane
to Chassis Slot
Port Numbers
1
1
2
2
3
13
5
3
6
4
7
15
9
5
10
6
11
17
13
7
14
8
15
19
17
9
18
10
19
21 (22 for Model
Number 3CB9FG24)
21
11
22
12
23
23 (24 for Model
Number 3CB9FG24)
Not applicable
Not applicable
Not applicable
Not applicable
9
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