Cisco Nexus 3550-T Manuale

Cisco Nexus 3550-T Hardware Installation Guide

First Published: 2021-07-26

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Cisco Systems, Inc.

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Fax: 408 527-0883

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

iii

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

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

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

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

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

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

Please refer The Cisco Nexus 3550-T Configuration Guide to learn more.

Cisco Nexus 3550-T Hardware Installation Guide

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

Preparing the Site

Dust and Contaminants

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