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3
Interfaces
3.1
Supported Interfaces
The systems support the following interfaces:
• Data interfaces - InfiniBand and Ethernet
• 100/1000 MbE RJ45 management interface(s)
• USB port
• RS232 Console port
• I2C interface
• Reset button
• Status and Port LEDs
In order to review the full configuration options matrix, refer to Table 4, "Management Interfaces
and FRUs".
3.1.1
Data Interfaces
The data interfaces use QSFP+ connectors. The full list of interfaces per system is provided in
Table 3, "Speed and Switching Capabilities," on page 5.
Each QSFP+ port can be connected with QSFP+ cable or connector for 40/56Gb/s, or 10Gb/s
when connecting through Mellanox QSFP+ to SFP+ (QSA) adapters.
3.1.2
Speed
Mellanox Long Haul systems supports up to FDR on the downlink ports and up to FDR10 on the
uplink ports.
• FDR is an InfiniBand data rate, where each lane of a 4X port runs a bit rate of 14.0625
Gb/s with 64b/66b encoding, resulting in an effective bandwidth of 56.25 Gb/s.
• FDR10 is a non-standard InfiniBand data rate, where each lane of a 4X port runs a bit
rate of 10.3125 Gb/s with a 64b/66b encoding, resulting in an effective bandwidth of 40
Gb/s. FDR10 supports 20% more bandwidth over QDR due to better encoding rate.
• Both FDR and FDR10 support Forward Error Correction (FEC), as defined in IEEE
802.3ap chapter 74.
3.1.3
RS232 (Console)
The port labeled "Console"
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 Section 2.8.1 to view the full pro-
cedure.
3.1.4
Management
The RJ45 Ethernet port labeled "MGT"
agement port is configured with auto-negotiation capabilities by default (100MbE to 1000GbE).
is an RS232 serial port used for initial configuration and
provides access for remote management. The man-
Mellanox Technologies
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