Nvidia QM87 Series, User Manual

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Interfaces
The systems support the following interfaces:
Data interfaces - InfiniBand
10/100/1000Mb Ethernet management interface (RJ45)*
USB port (uUSB connector)
RS232 Console port (RJ45)*
I²C interface*
Reset button
Status and Port LEDs
*This interface is not found in externally managed systems.
In order to review the full configuration options matrix, refer to Management Interfaces, PSUs and
Fans .
Data Interfaces
The data interfaces use QSFP56 connectors. The full list of interfaces per system is provided
in Speed and Switching Capabilities .
Each QSFP56 port can be connected with QSFP56 cable or connector for 40/56/100/200 Gb/s. The
system offers Class 7 (5W) QSFP56 transceivers support.
Speed
InfiniBand speed is auto-adjusted by the InfiniBand protocol. Mellanox systems support QDR/FDR/
EDR/HDR InfiniBand.
FDR is an InfiniBand data rate, where each lane of a 4X port runs a bit rate of 14.0625Gb/s
with 64b/66b encoding, resulting in an effective bandwidth of 56.25Gb/s.
EDR is an InfiniBand data rate, where each lane of a 4X port runs a bit rate of 25Gb/s with
64b/66b encoding, resulting in an effective bandwidth of 100Gb/s.
HDR is an InfiniBand data rate, where each lane of a 4X port runs a bit rate of 50Gb/s with
64b/66b encoding, resulting in an effective bandwidth of 200Gb/s.
RS232 (Console)
The Console port labeled “ ” is an RS232 serial port on the back side of the chassis that is
used for initial configuration and debugging. Upon first installation of the system, you need to
connect a PC to this interface and configure network parameters for remote connections. Refer
to Configuring Network Attributes to view the full procedure.
This interface is not found in externally managed systems. 