Cisco CBS250-48T-4G 48-Port Gigabit Smart Managed Switch 4x 1G SFP

The Cisco CBS250-48T-4G (NA) is a 48-port Gigabit Ethernet Smart Managed Switch with 4x 1G SFP fiber uplinks, built for small and mid-size business networks, branch offices, and access-layer deployments. Part of the Cisco Business 250 Series, it delivers 104 Gbps switching capacity, 77.38 Mpps forwarding, Layer 2 switching with Layer 3 static routing for inter-VLAN traffic, plus VLAN segmentation and QoS for voice and video — all configurable through a simple web GUI or the Cisco Business Dashboard. This is a non-PoE model — for PoE+ output, see the CBS250-48P-4G or CBS250-48PP-4G variants.

• 48 Gigabit RJ-45 + 4x 1G SFP Uplinks: 48x 10/100/1000BASE-T access ports plus 4x 1G SFP fiber uplinks for backbone aggregation, IDF-to-MDF runs, and multi-switch deployments.
• Smart Managed with Layer 3 Static Routing: 104 Gbps switching capacity and 77.38 Mpps forwarding (wire-speed, non-blocking); supports up to 255 active VLANs, STP/RSTP/MSTP, LACP link aggregation, and IPv4/IPv6 static routing with up to 32 static routes and 16 IP interfaces for inter-VLAN traffic.
• QoS for Voice, Video & Data: 8 hardware queues with Auto Voice VLAN, 802.1p and DSCP traffic prioritization, plus jumbo frame support — suited to small-business VoIP, video conferencing, and surveillance traffic.
• Network Security at the Access Layer: 802.1X port authentication, RADIUS, port security, up to 512 ACLs, storm control, and DoS attack prevention protect against rogue devices and common LAN attacks.
• Easy Management — Web GUI, SNMP, Cisco Business Dashboard: Configure via HTTPS web interface, SNMP v1/v2c/v3, or SSH CLI; deploy and monitor multiple switches centrally with the free Cisco Business Dashboard and mobile app.

• Brand • Series: Cisco • Business 250 Series Smart Switches
• Part Number: CBS250-48T-4G-NA
• Ports: 48x 10/100/1000BASE-T RJ-45 • 4x 1G SFP uplinks
• PoE: Not supported (non-PoE model)
• Switching Capacity • Forwarding Rate: 104 Gbps • 77.38 Mpps (wire-speed, non-blocking)
• MAC Address Table • Packet Buffer: 8K entries • 3 MB
• VLANs • Active VLANs: 802.1Q tag-based • up to 255 simultaneously
• Link Aggregation: IEEE 802.3ad LACP • up to 4 LAGs • up to 8 ports per LAG
• Layer 2: STP/RSTP/MSTP, Jumbo Frames, IGMPv1/2/3 & MLDv1/2 Snooping, Loopback Detection
• Layer 3: IPv4 & IPv6 static routing • 32 static routes • 16 IP interfaces (no dynamic routing)
• Security: 802.1X, RADIUS, Port Security, ACLs (up to 512 rules), Storm Control, DoS Prevention, SSH, SSL/HTTPS
• QoS: 8 hardware queues, Auto Voice VLAN, 802.1p CoS, DSCP, Strict Priority & WRR scheduling
• Management: Web GUI (HTTP/HTTPS), SNMP v1/v2c/v3, SSH CLI, Cisco Business Dashboard, Cisco Business mobile app
• Stacking: No physical stacking • centralized management of multiple units via Cisco Business Dashboard
• Form Factor • Power Input: 1U Rackmount • 100–240V AC, 50/60 Hz internal universal supply
• Max Power Consumption: ~110W
• Operating Temperature: 32°F to 113°F (0°C to 45°C)
• Dimensions (W x D x H): 17.5" x 10.1" x 1.73" (445 x 257 x 44 mm)
• Standards: IEEE 802.3, 802.3u, 802.3ab, 802.3ad, 802.3az, 802.1D, 802.1Q, 802.1w, 802.1s, 802.1X
• Condition: New

• Does this switch support PoE or PoE+?
  No — the CBS250-48T-4G is a non-PoE model. To power IP phones, APs, and cameras over the same cable, use the CBS250-48P-4G (370W PoE+ budget) or CBS250-48PP-4G (195W partial PoE+) instead.
• What is the difference between the CBS250-48T-4G and the CBS250-48T-4X?
  Both are 48-port Gigabit smart switches with no PoE. The -4G has 4x 1G SFP uplinks; the -4X has 4x 10G SFP+ uplinks with higher overall switching capacity (176 Gbps vs 104 Gbps) for higher-bandwidth backbones.
• Does it support full Layer 3 routing or stacking?
  It supports IPv4 and IPv6 static routing only (up to 32 routes, 16 IP interfaces) for inter-VLAN traffic — no dynamic routing protocols such as OSPF, RIP, or BGP. There is no physical stacking, but multiple switches can be deployed and monitored centrally through the Cisco Business Dashboard.