Cisco Nexus 3550-T Manual
Cisco Nexus 3550-T Hardware Installation Guide
First Published: 2021-07-26
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©2021 Cisco Systems, Inc. All rights reserved.
CONTENTS
Overview 1
CHAPTER 1
Overview of the Cisco Nexus 3550-T Triton Switches 1
Hardware Architecture of the Cisco Nexus 3550-T Triton Switches 2
Preparing the Site 5
CHAPTER 2
Temperature Requirement 5
Humidity Requirement 5
Altitude Requirements 5
Dust and Contaminants 5
Installing the Chassis 7
CHAPTER 3
Safety 7
Installation Options with Rack-Mount Kits, Racks, and Cabinets 10
Preparing to Install the Chassis 10
Unpacking and Inspecting the Chassis 13
Mount the Cisco Nexus 3550-T Programmable Switch Platform 13
Mount the Cisco Nexus 3550-T Programmable Switch Platform with Rear Support Rails 14
Installing a 1 (RU) Chassis in a Two-Post Rack 15
Grounding the Chassis 18
Starting the Switch 20
Rack Specifications 23
CHAPTER 4
General Requirements and Guidelines for Cabinets and Racks 23
About Requirements for Perforated Cabinets 24
About Requirements for Open Racks 24
Cisco Nexus 3550-T Hardware Installation Guide
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Connecting the Switch to the Network 25
CHAPTER 5
Preparing for Network Connections 25
Connecting to a Console 25
Connecting the Management Interface 27
Connecting Interface Ports to Other Devices 27
Installing SFP+ and SFP Transceivers 28
Installing SFP+ and SFP Optical Cables 29
Maintaining Transceivers and Optical Cables 29
Connecting to Transceivers 30
Connecting Interface Ports to Other Devices 31
High-Bandwidth Memory 31
Management Setup 33
CHAPTER 6
Management Setup 33
Rebooting 35
CHAPTER 7
Rebooting a Switch 35
Spare Parts Table 37
APPENDIX A
Spares Support Table 37
LEDs 39
APPENDIX B
Chassis LEDs 39
Fan LEDs 43
Power Supply LEDs 44
Cisco Nexus 3550-T Hardware Installation Guide
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Contents
CHAPTER 1
Overview
•Overview of the Cisco Nexus 3550-T Triton Switches, on page 1
•Hardware Architecture of the Cisco Nexus 3550-T Triton Switches, on page 2
Overview of the Cisco Nexus 3550-T Triton Switches
The Cisco Nexus 3550-T Programmable Switch Platform is a powerful top-of-rack Ethernet switch and
application platform with a unique low-latency design. It offers comprehensive layer 2 and layer 3 switching
capabilities. The device is built around a flexible FPGA device, offering long term feature enhancements,
upgrades, and fixes, as well as a complete firmware development environment for custom applications.
Figure 1: The Cisco Nexus 3550-T Triton
The hardware platform specifications of the Nexus 3550-T are as follows:
• 1RU 48 port SFP28 (Small Form-factor Pluggable 28) configuration (backwards compatible with SFP+
and SFP).
• Dual redundant, hot-swap PSUs and dual hot-swap fans.
• Build using a Xilinx Virtex Ultrascale Plus VU35P Field Programmable Gate Array (FPGA) with a “-3”
speed grade. The chip has 8GB of High Bandwidth Memory (HBM) on board.
• x86-based management processor with 100MB/s/1GB/s (RJ45) and 1GB (SFP+) based management
ports.
• Hardware (electronics) supporting 25G speeds to the FPGA.
Ease of Management
Cisco Nexus 3550-T Hardware Installation Guide
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The Cisco Nexus 3550-T Programmable Network Platform features a console port, a Micro USB port, and a
1G RJ45 port, which can be used as management interfaces. The Cisco Nexus 3550-T Platform uses a Command
Line Interface (CLI) designed to address the needs of low-latency FPGA configurations.
The Cisco Nexus 3550-T Programmable Network Platform includes standard enterprise manageability and
deployment capability features such as automatic configuration (via DHCP), SNMP, TACACS+ authentication,
on-board Python programmability, BASH shell access, and time-series logging.
Please refer The Cisco Nexus 3550-T Configuration Guide to learn more.
Hardware Architecture of the Cisco Nexus 3550-T Triton
Switches
The FPGA in the Cisco Nexus 3550-T Triton is a Xilinx Virtex UltraScale+ HBM xcvu35p-fsvh2892-3-e.
The X86 processor in the Nexus 3550-T Triton platform is an Intel Atom C3708 SoC, built into a third-party
System on Module (SoM). The CPU features 8 cores, running at 1.7Ghz with 16MB of cache. There is 16GB
of DDR4 Memory on the SoM, and the system boots from an M.2 NVMe SSD drive, with 128GB of
non-volatile storage. There is a spare (unpopulated) M.2 drive bay available.
A block diagram of the Nexus 3550-T Triton platform is given below.
Figure 2: Nexus 3550-T Triton Hardware Architecture
Features
The Cisco Nexus 3550-T Programmable Network Platform has a fixed form factor that is built around a
dynamically reconfigurable FPGA (Field Programmable Gate Array) and provides 48 ports that are 10G
capable along with an x86 (Intel®Atom®processor with 8 cores up to 1.7 GHz)–management CPU. All 48
ports are directly connected to Xilinx Virtex UltraScale Plus VU35P FPGA with a “-3” speed grade. The
FPGA has 8GB of High Bandwidth Memory (HBM) on board. The Cisco Nexus 3550-T hardware architecture
diagram is shown in Figure 2 below.
Cisco Nexus 3550-T Hardware Installation Guide
2
Overview
Hardware Architecture of the Cisco Nexus 3550-T Triton Switches
Figure 3: Cisco Nexus 3550-T Programmable Network Platform Data Sheet
Cisco Nexus 3550-T Programmable Network Platform hardware architecture
The Cisco Nexus 3550-T Triton platform has a Xilinx Virtex Ultrascale Plus FPGA (XCVU35P-3e), 48 10G
capable SFP ports and an Intel Atom CPU. A firmware development kit is available from Cisco, enabling
users with FPGA development capability to implement custom FPGA functionality in the XCVU35P-3e
FPGA of the Cisco Nexus 3550-T Triton.
Figure 4: The Cisco Nexus 3550-T Programmable Switch Platform Architecture
The FPGA module can run host of multiple firmware personalities. Currently, the following firmware versions
are available:
•10G Layer 3 switch firmware: With this firmware, the device operates as a 48-port low latency Layer
3 switch.
Cisco Nexus 3550-T Hardware Installation Guide
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Overview
Hardware Architecture of the Cisco Nexus 3550-T Triton Switches
Initial 10G Layer 3 Switch Features
• Standard management interfaces: SNMP / TACACS+ / Syslog / JSON-RPC API
• Layer 2 switching features: MAC learning, VLAN tagging/trunking, LLDP, IGMP & STP
• Layer 3 switching features: IP routing, BGP, OSPF, and PIM
• Layer 4 switching features: Static NAT/PAT
The following figure shows the fan-side chassis features that you use when installing the chassis or replacing
its modules.
Figure 5: Fan-Side View of the Cisco Nexus 3550-T Triton Chassis
AC power supply (2 and
2)
2Fan modules (1 and 1)1
The following figure shows the port-side chassis features that you use when installing the chassis or replacing
its modules.
Figure 6: Port-Side View of the Cisco Nexus 3550-T Triton Chassis
48 fixed small form-factor
pluggable (SFP+) ports
2Management, Console,
and USB ports
1
Please refer The Cisco Nexus 3550-T Configuration Guide to learn more.
Cisco Nexus 3550-T Hardware Installation Guide
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Overview
Hardware Architecture of the Cisco Nexus 3550-T Triton Switches
CHAPTER 2
Preparing the Site
•Temperature Requirement, on page 5
•Humidity Requirement, on page 5
•Altitude Requirements, on page 5
•Dust and Contaminants, on page 5
Temperature Requirement
This switch is rated to operate at 32 to 104°F (0 to 40°C). It can be stored at -40 to 158°F (-40 to 70°C).
Humidity Requirement
This switch is rated to operate at 8- to 80-percent relative humidity with 10-percent gradation per hour. It can
be stored in an environment that has 5- to 95-percent relative humidity.
Buildings cooled with air conditioning during warm months and warmed during cold months usually maintain
an acceptable level of humidity. However, if the site is unusually humid, use a dehumidifier to maintain the
required humidity level.
Altitude Requirements
High-altitude (low-pressure) conditions outside of 0 to 10,000 feet (0 to 3050 m) can reduce the cooling
efficiency and cause electrical problems.
Dust and Contaminants
To prevent contaminant buildup and increased internal chassis temperatures, make sure that the operating
environment is as clean as possible and free of dust and other contaminants. Do not permit smoking, food, or
drinks near the switch.
Cisco Nexus 3550-T Hardware Installation Guide
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Cisco Nexus 3550-T Hardware Installation Guide
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Preparing the Site
Dust and Contaminants
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