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