Cisco Catalyst WS-C3750X-48T-L Full English Product Description

1. Short Sales Title

2. Official Product Overview

Model Suffix Breakdown

• 3750X: Enhanced 3750 Gigabit stackable multilayer platform, StackWise Plus 32Gbps stacking bus, hardware MACsec, modular power/fan, StackPower power pooling capability
• 48: Forty-eight front-panel 10/100/1000BASE-T full Gigabit copper downlink ports (zero PoE power hardware)
• T: All copper Gigabit desktop port variant
• L: LAN Base IOS image (pure Layer 2 feature set, static inter-VLAN routing only, no dynamic routing protocols)

Three IOS Feature Set Comparison

1. LAN Base (WS-C3750X-48T-L): Full Layer 2 suite, static inter-VLAN routing only, max 255 VLANs, basic IPv6 stub Layer 2 switching, StackPower disabled by default, no OSPF/EIGRP/BGP/PIM dynamic routing protocolsCisco.
2. IP Base (WS-C3750X-48T-S): All LAN Base features + OSPF, EIGRP stub, PIM stub, HSRP/VRRP gateway redundancy, full IPv6 stub routing, 1000 VLANs, native StackPower support, limited dynamic Layer 3 routing for routed access.
3. IP Services: Full advanced routing suite (multi-area OSPF, full EIGRP, BGP inter-domain routing, full PIM sparse-dense multicast), full IPv6 dynamic routing (OSPFv3/EIGRPv6/BGPv6), policy-based routing (PBR), WCCP web cache redirection, DVMRP multicast tunneling, fallback bridging for non-IP inter-VLAN traffic.

Stacking Architecture

• StackWise Plus 32Gbps full-duplex stacking bus: Up to 9 physical switches unified as one single logical management plane, distributed wire-speed forwarding, cross-stack EtherChannel, cross-stack RSPAN port mirroring, cross-stack HSRP failover (HSRP unavailable under LAN Base firmware)Cisco. Separate StackWise Plus stacking cables sold as optional accessories.
• StackPower: Shared power pooling across stack members for power load balancing and redundancy; StackPower feature inactive under LAN Base firmware, only enabled after upgrading IOS to IP Base imageCisco.

Power & Uplink Hardware Design

3. Port & Hardware Specifications

• Downlink Ports: 48 × 10/100/1000BASE-T RJ45 auto-sensing Gigabit copper, auto MDI-X, full-duplex, no PoE circuits
• Rear Uplink Slot: 1 modular uplink bay (user-selectable 4×SFP GE or 2×SFP+ 10-Gigabit module, sold separately)
• Local Management Interfaces: RJ45 serial console, USB Type-B console, USB Type-A flash storage, dedicated out-of-band 10/100 Fast Ethernet management port
• Stack Interfaces: Dual StackWise Plus 32Gbps stacking connectors + dual StackPower power stacking ports
• Stacking Limitation: StackPower function disabled under LAN Base firmware
• Power Supply: Fixed single 350W AC auto-ranging modular unit; optional external RPS redundant power backup; input 100–240V AC 50/60Hz; max total power draw 120.4W under full loadCisco
• Front Panel LED Indicators: Per-port link/activity, speed, duplex status; global system fault LED, power status indicator
• Mounting Options: Standard 19-inch 1RU rack-mount brackets included; wall-mount adapter optional, desktop rubber anti-slip feet supplied
• Thermal Envelope: Variable-speed redundant hot-swappable fan tray; operating temperature 0°C ~ +45°C, storage -25°C ~ +70°C, relative humidity 10–85% non-condensing
• Safety & EMI Certifications: CE, FCC Class A, UL listed, VCCI Class A, RoHS compliant, NEBS Level 3 certified
• Physical Dimensions: 445 mm (W) × 44.5 mm (H, 1RU) × 460 mm (D) / 17.5 × 1.75 × 18.0 inches
• Unit Weight: 4.8 kg (10.6 lbs) with single 350W power supply
• Memory: 256 MB DRAM, 64 MB onboard flash memory for IOS universal image, startup-config / running-config files
• Switching Fabric: 32 Gbps full-duplex non-blocking stack-wide capacity
• Forwarding Rate: 101.2 Mpps wire-speed Layer 2 forwarding for 64-byte packetsCisco
• MAC Address Table: Up to 12,000 unicast MAC entries
• VLAN Capacity: LAN Base limit 255 active IEEE 802.1Q tagged VLANs (VLAN ID range 1–4094)
• Multicast Groups: 256 IPv4 CGMP snooping groups (PIM stub multicast routing unavailable under LAN Base)
• Jumbo Frame Support: Up to 9000 bytes on all SFP/SFP+ uplink ports and Gigabit copper downlinks
• MTBF: 167,198 hours under standard office operating conditions
• Warranty: Cisco Standard Limited Lifetime Hardware Warranty (LLW): Next-business-day advance hardware replacement, 90-day complimentary Cisco TAC technical support

4. Layer 2 + LAN Base IOS Full Feature Set

Core Layer 2 Switching & QoS Core Functions

• Up to 255 IEEE 802.1Q tagged VLANs, VTPv2 dynamic VLAN synchronization, MSTP 802.1s multiple spanning tree
• Dual trunk encapsulation: Cisco proprietary ISL trunk + IEEE 802.1Q standard trunk on all ports
• IEEE 802.1p CoS / DSCP multilayer QoS with 4 egress priority queues per port; Auto-QoS template dedicated for VoIP voice traffic prioritization
• Gigabit EtherChannel link aggregation (LACP / static mode), up to 8 bundled ports for uplink redundancy and cross-stack load balancing
• Rapid STP (802.1w), UplinkFast, BackboneFast, BPDU Guard, Root Guard to eliminate Layer 2 switching loops
• Port security: Static MAC assignment, sticky dynamic MAC learning, port shutdown violation action
• Per-port broadcast/multicast/unicast storm control to mitigate flooding DoS attacks
• Local SPAN + cross-stack RSPAN port mirroring supported via StackWise Plus stacking
• CGMP (Cisco Group Management Protocol) to suppress redundant multicast flooding to access ports
• Voice VLAN dedicated VoIP separation, Auto QoS automatic voice traffic marking
• Cisco EnergyWise power management to reduce idle endpoint power consumption
• RMON Groups 1,2,3,9 real-time traffic statistics monitoring
• NTP time synchronization, CDP Cisco Discovery Protocol for end-to-end network device visibility
• Embedded web-based Device Manager, Cisco Network Assistant zero-touch stack-wide deployment
• Basic IPv6 dual-stack Layer 2 switching: IPv6 Snooping, IPv6 ACL, IPv6 QoS marking, IPv6 neighbor discovery
• Hardware MACsec wire-speed encryption on SFP+ 10G uplink ports (requires compatible MACsec-capable SFP+ transceivers)
• Flexible NetFlow Lite for basic traffic visibility (full Flexible NetFlow requires IP Base upgrade)

LAN Base Layer 3 Routing Hard Limitations

• Only static inter-VLAN routing supported; no dynamic routing protocols available: OSPF, full multi-area EIGRP, BGP inter-domain routing, PIM stub / full PIM sparse-dense multicast routing are all disabled.
• Limited IPv6 stub Layer 2 switching only; no full IPv6 dynamic routing suites (OSPFv3/EIGRPv6/BGPv6).
• HSRP/VRRP gateway redundancy functions unavailable (requires IP Base image license).
• No policy-based routing (PBR), no WCCP web cache redirection, no DVMRP multicast tunneling.

Enterprise Security Feature Suite

• IEEE 802.1X port-based NAC authentication with RADIUS/TACACS+ AAA remote access control
• SSH v2 encrypted CLI management; SNMPv3 secure monitoring (fallback unencrypted Telnet/SNMPv1/v2c available)
• Combined Layer 2 ingress access control lists for granular inbound traffic filtering
• Time-based ACL policy scheduling for restricted network access hours
• Private VLAN edge isolation to separate host communication within the same broadcast domain
• DHCP Snooping, Dynamic ARP Inspection (DAI), IP Source Guard to block IP/MAC spoofing attacks
• Encrypted startup-config, password encryption for local administrative credentials
• Hardware MACsec point-to-point uplink encryption to protect aggregation traffic

5. Full Management Interfaces

1. Local Out-of-Band: RJ45 serial console port for offline configuration without network connectivity
2. Secure Remote CLI: SSH v2 encrypted command-line access; fallback unencrypted Telnet
3. In-Band Management: Embedded web GUI, SNMP v1/v2c/v3, CDP Cisco Discovery Protocol, NTP time synchronization
4. Auxiliary Interfaces: USB Type-A flash storage port for IOS image / config backup, dedicated out-of-band 10/100 Fast Ethernet management port
5. Stack Management: Single unified IP management plane for entire StackWise Plus stack, zero-touch stack provisioning via Cisco Network Assistant

6. Integrated Security Mitigation Suite

• Multi-level privilege CLI access with encrypted local user password storage
• IEEE 802.1X port authentication to validate endpoints before granting LAN access
• Port MAC address security to restrict unauthorized host connection
• STP BPDU guard and root guard to block rogue switches from altering spanning-tree topology
• Broadcast/multicast storm control to suppress flooding-based denial-of-service threats
• Private VLAN edge to isolate peer hosts on same access VLAN
• DHCP Snooping + DAI ARP Inspection + IP Source Guard to eliminate address spoofing attacks
• SSHv2 and SNMPv3 encryption to secure remote switch management traffic over the LAN
• Manual permanent shutdown of unused ports to reduce unauthorized network attack vectors
• Dedicated management VLAN isolation to segregate switch control plane traffic from end-user data traffic

7. Typical Deployment Scenarios

1. Small/Medium Enterprise Stackable Pure Layer 2 High-Density Access Switch: 48 Gigabit copper ports connect office desktop PCs and single-band enterprise Wi-Fi APs; modular SFP/SFP+ uplink modules build redundant fiber trunk links to building core aggregation switches. LAN Base flat Layer 2 feature set meets basic VLAN segmentation requirements without inter-VLAN routing, unified StackWise Plus stacking enables linear access-layer capacity expansion as office headcount grows.
2. Small Multi-Classroom K-12 Campus Converged Network: Mass all-copper Gigabit design links classroom desktop stacks and VoIP classroom phones; four SFP Gigabit uplinks connect to central campus data center backbone for low-bandwidth multimedia teaching traffic. MSTP prevents broadcast loop failures across geographic VLAN domains, cost-effective LAN Base firmware eliminates expensive full IP Services routing license for simple flat campus topologies.
3. Medium Regional Branch Wiring Closet Main Stackable Layer 2 Multilayer Switch: Universal non-PoE high-density Gigabit access ports connect branch office desktop stacks and surveillance data aggregators; long-distance single-mode fiber SFP uplink links to corporate headquarters aggregation layer. LAN Base pure Layer 2 feature set satisfies basic branch flat-VLAN access requirements for organizations that centralize all dynamic routing at the corporate core data center.
4. Legacy Distributed Flat-Gigabit Access Network Refresh Hardware: Drop-in stackable 3750X replacement for older low-port Catalyst 3750 non-X switches, fully compatible with existing StackWise stacking infrastructure, adds hardware MACsec uplink encryption and EnergyWise power management for gradual migration to modern Catalyst 9300 unified aggregation platforms without intermediate core router upgrades.

8. Standard Package Contents

Short Commercial Version (For Quotation & Product Catalog)