N8550-48B8C Switch Trident Data Center Managed Ethernet
“
Product Specifications
- Switch Model: N855048B8C
- Aggregate Throughput (Bidirectional): 2
Tbps - Port Speed: 48 x 25/10/1Gb/s ports, 8 x
100/40Gb ports - Physical Specifications:
- Height: 1.72″ (4.38cm)
- Width: 17.26″ (43.84cm)
- Depth: 20.28″ (51.5cm)
- Weight: 23.96 lbs (10.87kg) with two installed
PSUs
Product Usage Instructions
Channelization Support
The N8550-48B8C switch supports channelization, allowing you to
configure the 100GbE/25GbE QSFP28 ports into interfaces using
breakout cables and CLI configuration.
Physical Components Overview
The switch has front and rear panels housing various components.
Refer to the user manual for detailed illustrations of the
components.
Field-Replaceable Units (FRUs)
The N8550-48B8C switch’s FRUs are hot-removable and
hot-insertable, enabling you to replace components without powering
off the switch.
Chassis Status LEDs
The front panel features LEDs indicating the status of power
supplies, fan, diagnostics, and more. Refer to the user manual for
LED color codes and states.
Management Port LED
The management port on the front panel has an LED that shows
link activity. Check the LED status for port activity.
Frequently Asked Questions (FAQ)
Q: Can I replace components in the N8550-48B8C switch without
powering it off?
A: Yes, the switch’s FRUs are hot-removable and hot-insertable,
allowing component replacement without disrupting switch
functions.
Q: How many downlink and uplink ports does the N8550-48B8C
switch have?
A: The switch has 48 native 25G downlink ports and 8 40/100GbE
uplink ports.
“`
N8550-48B8C Switch Hardware Guide
Copyright © 2025 FS.COM AII Rights Reserved
Page 1 of 25
N8550-48B8C Switch Hardware Guide
About This Guide
This guide provides step-by-step instructions for installing the hardware and performing the initial software configuration of the N855048B8C switch. After completing the installation and basic configuration procedures covered in this guide, you could refer to the PicOS® documentation for information about further software configuration.
N8550-48B8C Overview
System Overview
The N8550-48B8C switch delivers rich, low-latency Layer 2/Layer 3 features and advanced EVPN-VXLAN capabilities. With 48 native 25G downlink ports and 8 40/100GbE uplink ports, it is ideal for leaf roles in data centers and data center interconnect (DCI) deployments.
Featuring L3 gateway functionality for seamless routing between virtualized and bare-metal servers, the switch is designed for extremely agile data centers that require support for overlay/underlay network architectures.
Benefits of the N8550-48B8C
· EVPN-VXLAN architecture — N8550-48B8C switch supports IP fabrics with EVPN-VXLAN overlays, enabling Layer 2/3 network virtualization.
· Industry-leading wire speeds — N8550-48B8C switch offers 25Gbps and 100Gbps wire speeds. · Include advanced PicOS® features — EVPN-VXLAN, MLAG, BGP, and EVPN multihoming. · High-performance packet processing and local storage — Powered by Broadcom BCM56873 Trident 3 with 64GB SSD · Support for channelization — You can channelize the QSFP28 ports and increase the number of interfaces.
System Software and Hardware and Software Features
The N8550-48B8C switch runs the PicOS® operating system and delivers Layer 2 and Layer 3 switching, routing, and security services. Table 1 lists the hardware and software features supported on the models. Table 1: Hardware and Software Features Supported on N8550-48B8C Switch Models
Switch Model
N855048B8C
Supported System Hardware Features
Aggregate Throughput (Bidirectional)
PicOS®
· Broadcom BCM56873 Trident 3 Chip
· Intel® Xeon® D-1518 processor quad_x0002_core 2.2 GHz
· 2x 8-GB memory
· 64-GB SSD storage
2 Tbps
Software Features
· Feature-rich automation capabilities with support for Python, Ansible, and zerotouch provisioning (ZTP)
· Support for VXLAN as a Layer 2 or Layer 3 gateway and Open vSwitch Database (OVSDB) protocol as a Layer 2 gateway
· Advanced PicOS® features such as EVPN, BGP, MPLS, Layer 3 VPN, telemetry, and MC-LAG
Channelization in N8550-48B8C
N8550-48B8C switches support channelization. You can channelize the 100GbE/25GbE quad small form-factor pluggable (QSFP28) ports into interfaces by connecting breakout cables and by using CLI configuration. Table 2 lists the channelization supported on the models. Table 2: Channelization in N8550-48B8C
Copyright © 2025 FS.COM AII Rights Reserved
Page 2 of 25
N8550-48B8C Switch Hardware Guide
Switch Model
Ports
Port Speed
48 N8550-48B8C
8
25/10/1Gb/s 100/40Gb
Components on the Front and Rear Panels Figure 1 shows the front view of the N8550-48B8C switch.
Supported Channelization Not supported 4x 25/10Gb Interfaces
Supported Transceivers DACs and AOCs
Transceivers DACs and AOCs Supported on PicOS® Data Center Switches
Figure 1. Figure 2 shows the rear view of the N8550-48B8C switch.
Figure 2. Figure 3 shows the components on the front and rear of a N8550-48B8C switch.
Copyright © 2025 FS.COM AII Rights Reserved
Page 3 of 25
N8550-48B8C Switch Hardware Guide
Figure 3.
Chassis
Chassis Physical Specifications
The N8550-48B8C switch is a rigid sheet-metal structure that houses all components of the switch. Table 3 shows the physical specifications of the N8550-48B8C switch models. Table 3: Physical Specifications of the N8550-48B8C Switch Model
Model N8550-48B8C
Height 1.72″ (4.38cm)
Width 17.26″ (43.84cm)
Depth 20.28″ (51.5cm)
Weight 23.96 lbs (10.87kg) with two installed PSUs
Field-Replaceable Units
Field-replaceable units (FRUs) are components that you can replace at your site. The FRUs in N8550-48B8C switches are hot-removable and hot-insertable: You can remove and replace them without powering off the switch or disrupting switch functions. The N8550-48B8C switches have the following FRUs:
· Power supplies
Copyright © 2025 FS.COM AII Rights Reserved
Page 4 of 25
N8550-48B8C Switch Hardware Guide
· Fan modules · Transceivers
Note: · Transceivers are not part of the shipping configuration. If you want to purchase any of these components, you must order them separately.
Chassis Status LEDs The front panel of the N8550-48B8C switch features three chassis status LEDs labeled PS1, PS2, DIAG,FAN and LOC (see Figure 4). Table 4 describes the chassis LEDs on the N8550-48B8C switch, its color and states, and the states they indicate.
Table 4. Chassis ID LED on a N8550-48B8C Switch
LED Label Power Supply 1
Power Supply 2 FAN DIAG LOC
Color Red Green Off Red Green Off Red Green Red Green Blinking Green Not supported.
State and Description Error/Failure/Bad Good Not present Error/Failure/Bad Good Not present Error/Failure/Bad Good Error/Fault/Failure Good System boot in progress
LEDs on the Management Port
N8550-48B8C switches have one management port on the front panel. Figure 4 below shows the location of the management port on the N8550-48B8C and the LED on the port. The LED indicates link activity of the port (see Figure 4). Table 5 describes the LED on the management port on the N8550-48B8C switch.
Table 5: LED on the Management Port on N8550-48B8C
LED Label MGMT Port LED
Color On Green
State and Description Port has a valid link
Copyright © 2025 FS.COM AII Rights Reserved
Page 5 of 25
N8550-48B8C Switch Hardware Guide
Flashing Yellow Off
Flashing indicates activity There is no link on the port
Network Port LEDs Each QSFP28 port on N8550-48B8C switches has four LEDs that show the link activity of the port (see Figure 5). See Table 6 to learn more about those LEDs Figure 5 shows LEDs on the SFP28, QSFP28, SFP+ Ports on N8550-48B8C Switch
Figure 5. Table 6: LEDs on the SFP28, QSFP28, SFP+ Ports on N8550-48B8C Switch
LED Label SFP28 Port LED
LED 1~4 (Port 49~56)
Color On/Flashing Green
On/Flashing Yellow Off On/Flashing Green Off On/Flashing Blue Off On/Flashing Yellow Off On/Flashing Purple Off
State and Description SFP28 port has a valid link at 25G.
Flashing indicates activity. SFP28 port has a valid link at 10G.
Flashing indicates activity. There is no link on the port. QSFP28 port has a valid link at 100G.
Flashing indicates activity. There is no link on the port. QSFP28 port has a valid link at 40G.
Flashing indicates activity. There is no link on the port. QSFP28 port has a valid link at 25G via break out cable. The LED on 100G QSFP28 end is also present OFF. Flashing indicates activity. (With breakout cable) There is no link on the port. QSFP28 port has a valid link at 10G via break out cable. The LED on 40G QSFP end is also present OFF. Flashing indicates activity. (With Breakout cable) There is no link on the port
Copyright © 2025 FS.COM AII Rights Reserved
Page 6 of 25
N8550-48B8C Switch Hardware Guide
SFP+ Port LED
On/Flashing Green On/Flashing Yellow Off
SFP+ port has a valid link at 10G. Flashing indicates activity. SFP+ port has a valid link at 1G. Flashing indicates activity. There is no link on the port.
Cooling System
The cooling system in N8550-48B8C switches consists of fan modules and built-in fans in the power supplies. The airflow direction depends on the fan modules and power supplies installed in the switch.
The fan modules are hot-removable and hot-insertable field-replaceable units (FRUs) installed in the rear panel of the switch: You can remove and replace them without powering off the switch or disrupting switch functions.
Fan Modules We ship N8550-48B8C switches with six fan modules (5+1 redundancy) preinstalled in the rear panel. The fan modules are available in a model that has airflow directions:
· Back-to-front (cold air enters through the back of the switch and hot air exhausts through the front).
Models and Airflow Direction Table 7 shows the airflow direction in N8550-48B8C switch models. Table 7: Airflow Direction in N8550-48B8C Switch Models
Fan Modules and Power Supplies
We ship the switch with six fan modules (with back-to-front airflow) and two AC power supplies (with a red ejector lever).
Direction of Airflow in the Fan Modules and Power Supplies
Back to Front Cools the chassis by drawing cool air in through the vents on the chassis rear panel and exhausting hot air through the vents on the chassis front panel.
In the N8550-48B8C switch models that have back-to-front airflow, the cold air intake to cool the chassis is through the vents on the rear panel and hot air exhausts through the vents on the front panel of the switch.
Figure 6: Models with back-to-front airflow
Copyright © 2025 FS.COM AII Rights Reserved
Page 7 of 25
N8550-48B8C Switch Hardware Guide
Figure 6.
How to Position the Switch In back-to-front airflow, hot air exhausts through the vents on the front panel of the switch. For back-to-front airflow, install the fan modules with the air intake side facing the hot aisle, and the air exhaust side facing the cold aisle. Figure 7 shows deployment of switches with Back-to-Front airflow through the N8550-48B8C switch chassis
Copyright © 2025 FS.COM AII Rights Reserved
Page 8 of 25
N8550-48B8C Switch Hardware Guide
Figure 7.
N8550-48B8C Fan Module Status There is a status LED for each fan module on N8550-48B8C switch, next to the fan module slot on the rear panel of the chassis, indicating the status of the fan module. Table 8 describes the fan module LED. Table 8: Fan Module Status LED
LED FANs
Color Red Green
Description Error/Failure/Bad The fan module is operating normally
Power System
The smart power module for the N8550-48B8C supports power consumption management and hot swapping. It can obtain the output power, output current, and operating temperature in real time.
Caution
· To improve system stability and availability, you are advised to configure 1 + 1 power redundancy. The chassis configured with power redundancy works in current-sharing mode.
· At least one power module is required. If any slot is unoccupied, install a filler panel to enable proper airflow and to keep dust out of the chassis.
· Unplug the power cord before installing or removing the power module.
AC Power Supply in N8550-48B8C Switches
You can install up to two power supplies in the power supply slots in the rear panel of the N8550-48B8C switch chassis. On N8550-48B8C switches, the slots are labeled PSU1 and PSU2. Figure 8 shows the AC power supply for a N8550-48B8C switch.
Copyright © 2025 FS.COM AII Rights Reserved
Page 9 of 25
N8550-48B8C Switch Hardware Guide
Figure 8. Table 9: Components of AC Power Supply
No.
Component
1
Handle
2
Fan
3
Power connector
4
LED
Description Handle of the power module Forward fan Three-pin connector Power status LED
AC Power Supply Specifications
The N8550-48B8C switch supports 650W AC power supplies. We ship N8550-48B8C switch models with two AC power supplies preinstalled in the rear panel of the chassis. You can install it without powering off the switch or disrupting the switching function. Table 10 shows the power supply specifications for AC power supplies for N8550-48B8C switch.
Copyright © 2025 FS.COM AII Rights Reserved
Page 10 of 25
N8550-48B8C Switch Hardware Guide
Table 10: Technical Specifications for AC Power Supplies
Item Power connector Rated input voltage range Rated input current range Rated output power consumption Hot swapping Cooling Overvoltage protection Overcurrent protection Over-temperature protection
Specification C14 connector for connection with AC power cord 100VAC to 240VAC, 50Hz to 60Hz 7.8A to 3.8A (100VAC to 240VAC) 650W Supported Rear to front air flow Supported Supported Supported
Power Cord Specifications
A detachable AC power cord is supplied with the AC power supplies. The plug end of the power cord fits into the power source outlet that is standard for your geographical location. Table 11 shows the specifications of the AC power cord. Table 11. Specifications of the AC Power Cord
Countries
Power Cord Standard
United States, Canada, Mexico, Puerto Rico, US
Guam, Japan, Virgin Islands (U.S.)
United Kingdom, Hong Kong, Singapore, Malaysia, UK
Maldives, Qatar, India
Continental Europe, South Africa, Switzerland, EU
Italy, Indonesia
China, Australia, New Zealand, Argentina
CN
Male Plug
Female Connector
Voltage Compatibility
Maximum Input Amps
NEMA 5-15P IEC60320 C13 100-250VAC 10A
BS1363
IEC60320 C13 100-250VAC 10A
CEE 7 GB16A
IEC60320 C13 100-250VAC 10A IEC60320 C13 100-250VAC 10A
LEDs on the AC Power Supplies Table 12 describes the LED on the AC power supply for N8560-32C switch. Table 12. LED on the AC Power Supply for N8560-32C
LED Power status LED
Color Solid green
Blinking green at 1Hz
Solid red
Description The power module is outputting power normally
· The power module is in PS OFF state with only 12V standby output. · The power module is in the cold standby status and not outputting power.
· The power module is not functioning properly (overcurrent, overvoltage, or fan failure).
· The power module in redundancy mode is removed.
Copyright © 2025 FS.COM AII Rights Reserved
Page 11 of 25
N8550-48B8C Switch Hardware Guide
Blinking red at 1Hz Off
The power module is operating but with alarms, such as high power, high current, high temperature, and low fan rotation speed.
The power module is not receiving power or not operating even after receiving power.
Site Planning, Preparation, and Specifications
Site Guidelines and Requirements
The equipment must be installed indoors for normal operation and prolonged service life. The following sections provide specific information to help you plan for a proper operating environment.
Floor Loading
· Ensure that the floor under the rack supporting the chassis is capable of supporting the combined weight of the rack and all the other components.
Airflow
· To ensure adequate airflow through the chassis, maintain a minimum clearance of 20 cm (7.87 in.) around air vents. Route the cables and power cords through the cable management brackets to avoid blocking air intake vents. Dust the equipment every three months to prevent blocking the ventilation openings on the housing.
Space
· You are advised to have a pathway of 0.8 meters (2.62 ft.) wide in the equipment room. This space ensures that you can remove the components and perform routing maintenance easily.
· The front and rear of the chassis must remain unobstructed to ensure adequate airflow and prevent overheating inside the chassis.
Temperature
To ensure normal operation and prolonged service life of the equipment, maintain an appropriate temperature in the equipment room. Otherwise, the equipment may be damaged.
· A high temperature can accelerate the aging process of insulation materials, greatly reducing the availability of the equipment and severely affecting its service life.
For the device’s operating temperature requirements, please refer to the product datasheet.
Note: The operating temperature is measured at the point that is 1.5 m (4.92 ft.) above the floor and 0.4 m (1.31 ft.) before the equipment with no protective plates in front or at the back of the equipment.
Humidity
To ensure normal operation and prolonged service life of the equipment, maintain an appropriate humidity in the equipment room. Otherwise, the equipment may be damaged.
· In an environment with a high relative humidity, the insulating material is prone to poor insulation or even electricity leakage. · In an environment with a low relative humidity, the insulating strip may dry and shrink, resulting in screw loosening. Furthermore,
internal circuits are prone to static electricity For the device’s operating humidity requirements, please refer to the product datasheet.
Note: The operating humidity is measured at the point that is 1.5 m (4.92 ft.) above the floor and 0.4 m (1.31 ft.) before the equipment with no protective plates in front or at the back of the equipment.
Cleanliness
The indoor dust takes on a positive or negative static electric charge when falling on the switch, causing poor contact of the metallic joint. Such electrostatic adhesion may occur more easily when the relative humidity is low, not only affecting the service life of the switch, but also
Copyright © 2025 FS.COM AII Rights Reserved
Page 12 of 25
N8550-48B8C Switch Hardware Guide
causing communication faults. The following table 13 lists the requirements for the dust and particles in the equipment room: Table 13. Dust and Particle Requirement
Minimum Dust and Particle Diameter 0.5 m 5 m
Unit particles/m³ particles/m³
Maximum Quantity 3.5 × 10 3.0 × 10³
Apart from dust, there are also requirements on the salt, acid, and sulfide in the air of the equipment room. These harmful substances will accelerate metal corrosion and component aging. Therefore, the equipment room should be properly protected against harmful gases, such as sulfur dioxide and hydrogen sulfide. The following table 14 lists limits on harmful gases.
Table 14. Gas Requirement
Gas
Sulfur Dioxide (SO) Hydrogen Sulfide (HS) Chlorine (Cl) Nitrogen Oxides (NO)
Average mg/m³ 0.3 0.1 0.1 0.5
cm³/m³ 0.11 0.071 0.034 0.26
Maximum (mg/m³) mg/m³ 1.0 0.5 0.3 1.0
cm³/m³ 0.37 0.36 0.1 0.52
Note:The average value is measured over one week. The maximum value is the upper limit of the harmful gas measured in one week for up to 30 minutes every day.
System Grounding
A reliable grounding system is the basis for stable and reliable operation, which is indispensable for preventing lightning strikes and interference. Carefully check the grounding conditions at the installation site according to the grounding specifications, and complete grounding properly based on the site situation.
· Safety Grounding
Ensure that the rack and power distribution system are securely grounded. Otherwise, electric shocks may occur when the insulation resistance between the power module and the chassis becomes small.
Note:The building should provide a protective ground connection to ensure that the equipment is connected to a protective earth.
· Lightning Grounding
The surge protection system is an independent system consisting of a lightning rod, a downlead conductor, and a connector connected to the grounding system. The grounding system is usually used for power reference grounding and safety grounding of the rack. · EMC Grounding
Grounding for the EMC design includes shielded grounding, filter grounding, noise, interference suppression, and level reference. The grounding resistance should be smaller than 1-ohm. Connect the grounding terminal to the ground before operating the equipment. There is one grounding studs in the lower left corner of the rear panel. It is pasted with a conspicuous label.
Copyright © 2025 FS.COM AII Rights Reserved
Page 13 of 25
N8550-48B8C Switch Hardware Guide
Preventing Electromagnetic Interference
Electromagnetic interference mainly comes from outside the equipment or application system and affects the equipment through capacitive coupling, inductive coupling, electromagnetic waves, and other conduction modes.
· Interference prevention measures should be taken for the power supply system. · Keep the equipment far away from the grounding facility and surge protector facility of the power device. · Keep the equipment far away from high-frequency current devices such as the high-power radio transmitting station and radar
launcher. · Take electromagnetic shielding measures when necessary.
Surge Protection
Although the equipment can guard against lightning strikes, strong lightning strikes may still damage the equipment. Take the following surge protection measures:
· Ensure that the grounding wire of the rack is in good close contact with the ground. · Ensure that the neutral point of the AC power socket is in close contact with the ground. · You are advised to install a power arrester in front of the power input end to enhance surge protection for the power supply.
Network Cable and Transceiver Planning
Up-to-date information on supported optics for the N8550-48B8C switch can be found in the Hardware Compatibility Document: Transceivers DACs and AOCs Supported on PicOS® Data Center Switches.
Management Cable Specifications and Pinouts
Console Port Connector Pinout Information
The console port on PicOS® devices is an RS-232 serial interface, using an RJ-45 connector to connect to a console management device. The default baud rate for the console port is 115200 baud.
Copyright © 2025 FS.COM AII Rights Reserved
Page 14 of 25
N8550-48B8C Switch Hardware Guide
RJ-45 Management Port Connector Pinout Information The RJ-45 connector on PicOS® network devices provides the following pinout details for the management port. Table 15. Pin Signal Definition Table for 1000BASE-T
Pin
MDI Mode
1
Media Dependent Interface A+
2
Media Dependent Interface A-
3
Media Dependent Interface B+
4
Media Dependent Interface C+
5
Media Dependent Interface C-
6
Media Dependent Interface B-
7
Media Dependent Interface D+
8
Media Dependent Interface D-
MDI-X Mode Media Dependent Interface B+ Media Dependent Interface BMedia Dependent Interface A+ Media Dependent Interface D+ Media Dependent Interface DMedia Dependent Interface AMedia Dependent Interface C+ Media Dependent Interface C-
Initial Installation and Configuration
Unpack and Mount the N8550-48B8C Switch
Below is an optimized guide for unpacking and preparing the N8550-48B8C switch for installation, including key precautions and potential risk alerts.
Parts Inventory (Packing List) for a N8550-48B8C Switch The switch shipment includes a packing list. Check the parts you receive with the switch against the items in the packing list. Table 16. Inventory of Components Provided with a N8550-48B8C Switch The switch shipment includes a packing list. Check the parts you receive with the switch against the items in the packing list.
Component Power Cord Console Cable Rear-post Bracket Front-post Bracke M4 Screw Ear-locking Screw Holder Bracket
Quantity 2 1 2 2 20 2 2
Mount the N8550-48B8C Switch on a Rack
Make sure the previously mentioned “2.1 Site Guidelines and Requirements” have been met before you begin the installation. Plan for the installation site, networking mode, power supply, and cabling in advance. Then, wear an ESD wrist strap, place the switch, and mount it onto the rack.
Before you begin the installation, make sure that you have the following:
Copyright © 2025 FS.COM AII Rights Reserved
Page 15 of 25
N8550-48B8C Switch Hardware Guide
· Phillips screwdriver. · Standard-sized, 19″ wide rack with a minimum of 1U height available. · Category 5e or higher RJ-45 Ethernet cables, ber optical cables and the console cable for connecting network devices. Please verify that the front and rear brackets of the rack are in the right locations before mounting. If the front brackets are too close to the front door, there will not be sufficient clearance between the front panel and the door. As a result, the front door cannot be closed after Ethernet cables and optical fibers are connected to the chassis. Generally, maintain a minimum clearance of 10 mm (0.39 in.) between the front panel and the front door. Before installation, verify the following guidelines are met: · The rack has been secured. · The various components in the rack have been installed. · There are no obstacles inside or around the rack when installing the switch.Installation Requirements Attach each of the front- and rear-post brackets to the switch using four M4 screws, and secure each of the rear-post brackets at the mid-point on the sides of the switch with two M4 screws. Secure the switch in the rack using the screws and cage/clip nuts provided with the rack.
Note:Two people are required to install this switch in a rack. One person should hold the switch in the rack while the other secures it with the rack screws.
The chassis can be installed on a standard 19-inch EIA rack. Mount the chassis on the rack with its front panel facing forward. You are advised to use a tray or guide rails to assist in installing the chassis on the rack.
Use the screws and cage nuts supplied with the rack to secure the switch in the rack.
Copyright © 2025 FS.COM AII Rights Reserved
Page 16 of 25
N8550-48B8C Switch Hardware Guide
Adjusting Rear-Post Bracket Ears
First adjust the position of rear-post bracket ears and secure them in the rack. Then lock the position of the rear-post bracket ears using the included ear-locking screw.
Copyright © 2025 FS.COM AII Rights Reserved
Page 17 of 25
N8550-48B8C Switch Hardware Guide
Note · Install the brackets over screw holes on both sides of the front panel. · Distinguish left and right rack-mount guide rails according to the notations.
Connect the N8550-48B8C to Power
Connect the N8550-48B8C Switch to Earth Ground A reliable grounding system is the basis for stable and reliable operation, which is indispensable for preventing lightning strikes and interference. The chassis has a grounding stud on its rear panel. Connect the grounding stud to the grounding terminal of the rack and then connect the grounding terminal to the grounding bar of the equipment room.
· The cross-sectional area of the grounding wire is determined by the maximum possible current. The grounding wire should be of a good conduction quality.
· Never use bare wires. · The combined grounding should have a grounding resistance of less than 1-ohm. Ensure that the rack is properly grounded and complies with ETSI ETS 300 253 specifications. Verify that the electrical connection to the ground point on the rack is good (not painted or covered with insulating finishes). Connect a ground wire (#14 AWG) to the ground point on the rear panel of the switch. Then connect the other end of the wire to the rack ground.
Danger Warnings:All power connections must be disconnected before removing the ground connection.
Connect Power to N8550-48B8C Switch Wear an ESD-preventive wrist strap before proceeding with the following operation.
· Remove the power module from its packing materials. Make sure the input indicators meet the requirements.
Copyright © 2025 FS.COM AII Rights Reserved
Page 18 of 25
N8550-48B8C Switch Hardware Guide
· Remove the filler panel from the slot by unscrewing the captive screw. Keep the panel with the nameplate facing upwards. Grasp the handle with one hand and place your other hand underneath the power module to support it. Slide the power module along the guide rails into the slot until the module plugs into the receptacle at the back of the slot.
Warning:
· Slide the power module all the way into the chassis gently. Align the power module in the right orientation to the open power slot.
· If you are not able to push the power module all the way into the slot, carefully slide the module out of the slot, align the module with guide rails, and reinstall the module.
· All fan and power modules must have the same airflow direction or else an error can occur.
Post-installation Check
Note: Before checking the installation, ensure that all power is turned off and disconnected to prevent personal injury and damage to the switch components.
· The external power supply matches the power distribution system. · The front and rear doors of the rack can close properly after installation has been completed. · The rack has been completely fastened, which will not move or tilt. · The chassis has been mounted on the rack and all cables have been fastened to the rack. · Select the proper fan module and tighten captive screws. · Select the proper power module. · The power module is completely seated in the slot. · At least two personnel are required to power on the chassis. Do not service the chassis before it is powered off. · Carefully check your work area for possible hazards, such as ungrounded power extension cables, missing safety grounds, and moist
floors. · Do not subject the equipment to dampness and avoid liquid inside the equipment. · Locate the emergency power-off switch in the room. In the case of an electrical accident, you will be able to quickly turn off the power. · Never assume that power is disconnected from a circuit. Instead, always check. · The power cord is plugged into the power module and retained there. · The power cord is long enough to avoid over-extension. · The power socket is connected to the earth ground as required with a rated current of at least 10 A. · Each power module receives power from a power socket. · If a slot is to remain empty, install a filler panel to allow for adequate airflow and to keep dust out of the chassis.
Connect the Power Cable
Connect the power cord according to the notation on the power module and location requirements. Take the AC power cord as an example: · Connect one end of the AC power cord to the power connector. · Connect the other end of the AC power cord to the power socket of the external power system.
Copyright © 2025 FS.COM AII Rights Reserved
Page 19 of 25
N8550-48B8C Switch Hardware Guide
Caution: · Do not install power cables while the power is on.
Connect the N8550-48B8C to the Network
Install SFP+, SFP28, QSFP28 Transceiver Before you install a transceiver in a device, ensure that you have taken the necessary precautions for safe handling of lasers. Ensure that you have a rubber safety cap available to cover the transceiver. The transceivers for FS devices are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace the transceivers without powering off the device or disrupting the device functions.
Note: After you insert a transceiver or after you change the media-type configuration, wait for 6 seconds for the interface to display operational commands.
To install a SFP+,SFP28,QSFP28 transceiver: Wrap and fasten one end of an ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point on the switch. Verify that a rubber safety cap covers the SFP+,SFP28,QSFP28 transceiver. Position the transceiver in front of the port on the device so that the SFP+,SFP28,QSFP28 connector faces the port. Slide the transceiver into the port until the locking pins lock in place. If there is resistance, remove the transceiver and flip it so that the connector faces the other direction. Remove the rubber safety cap from the transceiver and the end of the cable, and insert the cable into the transceiver.
Laser Warning: Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.
Copyright © 2025 FS.COM AII Rights Reserved
Page 20 of 25
N8550-48B8C Switch Hardware Guide
CAUTION:Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and protects your eyes from accidental exposure to laser light.
If there is a cable management system, arrange the cable in the cable management system to prevent the cable from dislodging or developing stress points. Secure the cable so that it does not support its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.
CAUTION:Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.
CAUTION:Avoid bending the fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.
Connect a Fiber-Optic Cable Before you connect a fiber-optic cable to an optical transceiver installed in a device, ensure that you have taken the necessary precautions for safe handling of lasers. To connect a fiber-optic cable to an optical transceiver installed in a device:
Laser Warning: Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to transceivers emit laser light that can damage your eyes.
If the fiber-optic cable connector is covered with a rubber safety cap, remove the cap. Save the cap. Remove the rubber safety cap from the optical transceiver. Save the cap. Insert the cable connector into the optical transceiver.
Secure the cables so that they do not support their own weight. Place excess cable out of the way in a neatly coiled loop. Placing fasteners on a loop helps cables maintain their shape.
CAUTION:Do not bend fiber-optic cables beyond their minimum bend radius. An arc smaller than a few inches in diameter can damage the cables and cause problems that are difficult to diagnose.Do not let fiber-optic cables hang free from the connector. Do not allow fastened loops of cables to dangle, which stresses the cables at the fastening point.
Connect a Device to a Management Console Using an RJ-45 Connector
Copyright © 2025 FS.COM AII Rights Reserved
Page 21 of 25
N8550-48B8C Switch Hardware Guide
Insert the RJ45 connector of the console cable into the RJ45 console port on the front of the switch. Connect the other end of the console cable to the RS-232 serial port on the computer.
Configure PicOS® on the N850-48B8C
Default Configuration
We ship each N8550-48B8C switch programmed with a factory-default configuration that contains the values set for each configuration parameter. The default configuration file sets values for system parameters such as the system log and file messages.
When you commit changes to the configuration, a new configuration file is created that becomes the active configuration. You can always revert to the factory-default configuration.
This topic shows the factory-default configuration file of a N8550-48B8C switch:
system { login { announcement: “” user operator { class: “read-only” } } services { ssh { port: 22 root-login: “deny” protocol-version: “v2” connection-limit: 20 rate-limit: 20
Copyright © 2025 FS.COM AII Rights Reserved
Page 22 of 25
N8550-48B8C Switch Hardware Guide
disable: false idle-timeout: 0 } } inband { enable: false } syslog { local-file: “ram” } log-level: “warning” log-facility: 0 timezone: “UTC” }
Connect and Configure N8550-48B8C
The initial configuration of the switch requires the user to connect the terminal or computer to the switch’s console port. Once the user accesses the switch and establishes the CLI (Command Line Interface) through a serial console connection, an IP address is assigned to the management port, and an IP route to the gateway is created. Keep in mind the following points:
The console port provides local serial access to the switch.
The Ethernet management port is used for out-of-band network management tasks. Before using the management port for the first time, you must assign an IP address to the port.
Before configuring the device for the first time, you need to access it via the console port. The console port is located at the front of the switch. You can connect a terminal or a computer to the console port using a serial or RS-232 cable.
Port Settings
Use the following port settings to connect the terminal or computer to the switch console port:
Baud rate: 115200 Data bits: 8 Stop bits: 1
The default width for terminal sessions through the console port is 80 characters. This means that the terminal client’s width should be at least 80 characters for proper use of the console port. Most terminal clients have a default width of 80 characters.
Once initial access to the switch is obtained, the user needs to configure the management IP address and default gateway in either L2/L3 mode or OVS mode. This section explains the configuration in L2/L3 mode.
The management IP address is used for maintaining and managing the device. You can configure a static IP address for the management interface eth0, or you can dynamically assign the address via DHCP. If a static IP address is not assigned, the system will default to attempting to obtain the management port IP address dynamically from the DHCP server.
Note:When switching from OVS mode to L2/L3 mode, the static IP address of the management port configured before will still be used if there is no user configuration for it in the new mode.
Step1. Set static IP addresses for management interface eth0.
set system management-ethernet eth0 ip-address {IPv4 | IPv6} <ip_address>
NOTE: · If the static IP address is not assigned, the system will try to dynamically obtain the management port IP address from the DHCP server which is also the factory setting.
Copyright © 2025 FS.COM AII Rights Reserved
Page 23 of 25
Step2. Set the gateway address for management interface eth0.
set system management-ethernet eth0 ip-gateway {IPv4 | IPv6} <ip_address>
Step1. Set static IP addresses for management interface eth0.
admin@Xorplus# set system management-ethernet eth0 ip-address IPv4 192.168.10.5/24
Step2. Set the gateway address for management interface eth0.
admin@Xorplus# set system management-ethernet eth0 ip-gateway IPv4 192.168.10.1
Step3. Commit the configuration.
admin@XorPlus# commit
Step4. Verify the configuration. · Run run show system management-ethernet command to view the configuration information, status and traffic statistics information of the management interface.
admin@XorPlus# run show system management-ethernet eth0 Hwaddr: 00:18:23:30:e5:72 State: UP Gateway : 192.168.10.1 Inet addr: 192.168.10.5/24 Traffic statistics Input Packets………………….3620 Input Bytes……………………462971 Output Packets…………………597 Output Bytes…………………..75459
Copyright © 2025 FS.COM AII Rights Reserved
Page 24 of 25
Delaware, United States AddressDelaware: 380 Centerpoint Blvd, New Castle, DE 19720, United States EmailUS@fs.com Tel+1 888-468-9910
Germany AddressRöntgenstraße 18, 85757 Karlsfeld, Germany EmailDE@fs.com Tel+49 (0) 8131 377 3008
Australia Address57-59 Edison Rd, Dandenong South, VIC 3175, Australia EmailAU@fs.com Tel+61 3 5909 9990
Japan AddressJS Progress Building 5F, 4-1-23, Heiwajima, Ota Ku, Tokyo, 143-0006, Japan EmailJP@fs.com Tel+81-3-6897-9438
California, United States AddressCalifornia: 15241 Don Julian Rd, City of Industry, CA 91745, United States EmailUS@fs.com Tel+1 888-468-9910
United Kingdom AddressUnit 8, Urban Express Park, Union Way, Aston, Birmingham B6 7FH, United Kingdom EmailUK@fs.com Tel+44 (0) 121 726 4775
Singapore Address7002 ANG MO KIO AVENUE 5 #05-02 Singapore 569914 EmailSG@fs.com Tel+65 31381992
FS has several offices around the world. Addresses, phone numbers are listed on the FS Website at https://www.fs.com/contact_us.html. FS and FS logo are trademarks or registered trademarks of FS in the U.S. and other countries.
Copyright © 2025 FS.COM AII Rights Reserved
Page 25 of 25
Documents / Resources
 |
FS N8550-48B8C Switch Trident Data Center Managed Ethernet [pdf] User Guide N8550-48B8C Switch Trident Data Center Managed Ethernet, N8550-48B8C, Switch Trident Data Center Managed Ethernet, Data Center Managed Ethernet, Center Managed Ethernet, Managed Ethernet |