Cisco Catalyst 6840 Series Hardware Installation Manual page 23

Product Overview
6
To configure 10G ports to function as 40G ports, you need to use adapter cables that connect four 10G
SFP+ ports of the switch on one end to a 40G QSFP port of the switch on the other end.
Catalyst 6824-X-LE-40G
Figure 7: 10G native port numbering
Table 4: Port mapping for Catalyst 6824-X-LE
10-Gigabit ports
1, 2, 3, and 4
5, 6, 7, and 8
9, 10, 11, and 12
13, 14, 15, and 16
17, 18, 19, and 20
21, 22, 23, and 24
40-Gigabit native ports
25
26
7
To configure 10G ports to function as 40G ports, you need to use adapter cables that connect four 10G
SFP+ ports of the switch on one end to a 40G QSFP port of the switch on the other end.
8
To configure 40G ports to function as 10G ports, you need to use Cisco QSFP to four SFP+ Active
Optical Breakout Cables that connect a 40G QSFP port of the switch on one end to four 10G SFP+ ports
of the switch on the other end.
SFP and SFP+ Transceiver Module Ports
Configurable 40-Gigabit ports
35
36
37
38
39
40
Configurable 10-Gigabit ports
27, 28, 29, and 30
31, 32, 33, and 34
Catalyst 6840-X Switch Series Hardware Installation Guide
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