Lenovo RackSwitch G8264 Installation Manual page 25

QSFP+ LEDs
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QSFP+ ports allow you to make one 40 GbE connection, or four 10 GbE connections
using a breakout cable, as follows:
 QSFP+ optical transceiver with MTP‐to‐4 LC (SFP+) fiber breakout cable. This
option supports only Lenovo 10GBASE‐SR SFP+ transceivers. The
40GBASE‐SR4 specification (802.3ba‐2010) indicates a higher optical power level
than standard 10GBASE‐SR. Lenovo SFP+ SR transceivers can handle the higher
optical power levels. This cable must be purchased separately.
QSFP+ to four 10 GbE SFP+ breakout DAC. The SFP+ connectors on supported

breakout DACs are labelled A, B, C, and D, which correspond to the first,
second, third, and fourth ports in the port range. This cable must be purchased
separately.
The QSFP+ port LEDs are oriented as shown in the following figure.
Figure 6. QSFP+ port LEDs
5 13
5 6 7 8
1
1 2 3 4
Note: When the port is 40 GbE mode, only the first LED in each set of four applies.
When the port is operating in quad 10 GbE mode, each LED provides status for its
corresponding 10 GbE port.
Status LEDs for the QSFP+ ports are described in the following table.
Table 6.
QSFP+ port status LED behavior
LED State
Link Steady green
Off
Flashing green
13 14 15 16
QSFP Port LEDs
9
9 10 11 12
Functional Meaning
Link up
No link
Activity
Chapter 2: Switch Components
25