FS-248D is part of the FortiSwitch portfolio for access and campus, with standalone management or integration through FortiLink depending on the chosen architecture.
Key features
Access and campusIntended use according to the official FortiSwitch family.
FortiLinkManagement integrated with FortiGate when included in the design.
Secure NetworkingNetworking and security addressed within a coordinated architecture.
Technical specifications
Interfaces
Access ports
48 × 1 GbE RJ45
Uplinks
4 × 1 GbE SFP
Dedicated management port
1 × Ethernet 10/100 Mb/s
Console
1 × RJ45 serial
Power and PoE
PoE ports and standards
Does not provide PoE output
Power input
100–240 V AC, 50/60 Hz
Power supply
Built-in AC power supply
Power consumption
38.66 W / 39.19 W (average / maximum)
Performance and capacity
Switching capacity
104 GbpsDuplex value published in the datasheet; the detailed measurement methodology is not stated.
Forwarding rate
155 MppsDuplex value published in the datasheet; the detailed measurement methodology is not stated.
Network latency
< 1 µsDatasheet value; packet and load conditions not specified.
MAC address table
16K
Supported VLANs
4K
Ports per aggregation group
8
Link aggregation groups
Up to the number of ports
Packet buffer
1,5 MB
RAM
512 MB DDR3
Flash storage
128 MB
ACLs
512
Spanning Tree instances
32
Routing
IPv4 / IPv6 route entries
64 / 64
IPv4 / IPv6 host entries
512 / 512
Installation and environment
Form factor and installation
19-inch rack, 1U
Dimensions (H × D × W)
44 × 246 × 440 mm
Weight
3.54 kg
Heat dissipation
134 BTU/h
Operating temperature
0 to 50 °C
Storage temperature
−20 to 70 °C
Relative humidity
10% to 90%, non-condensing
Airflow
Side-to-side airflow
Noise / cooling
32.3 dBA
MTBF
More than 10 years
Management and security
Management
Standalone mode or management integrated with FortiGate through FortiLink
FortiLink Stacking
Automatic interconnections between switches in the FortiLink topology
Documentation
Document reference
06/02/2026 · FS-SA-DAT-R67-20260206
Figures published by the manufacturer. Final sizing depends on the environment, enabled services and traffic profile.
