Cisco Catalyst WS-C3750X-12S-E 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 hot-swap power/fan, StackPower power pooling capability
• 12: Twelve front-panel hot-swappable GE SFP fiber slots (no RJ45 copper ports, zero PoE hardware)
• S: SFP-only fiber port variant (supports 1000BASE-SX/LX/LH/ZX/CWDM SFP transceivers)
• E: IP Services full enterprise multilayer IOS firmware (EMI Enhanced Multilayer Image)

Three IOS Feature Set Comparison

1. LAN Base (WS-C3750X-12S-L): Pure Layer 2 only, limited static inter-VLAN routing, max 255 VLANs, StackPower disabled, no dynamic routing protocols, basic IPv6 stub Layer 2 switching.
2. IP Base (WS-C3750X-12S-S): All LAN Base features + OSPF, EIGRP stub, PIM stub, HSRP/VRRP gateway redundancy, full IPv6 stub routing, 1000 VLANs, native StackPower support, limited stub multicast only.
3. IP Services (WS-C3750X-12S-E): All IP Base features + full 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 gateway redundancy, cross-stack multicast replication. Separate StackWise Plus stacking cables sold as optional accessories.
• StackPower: Shared power pooling across stack members for power load balancing and stack-wide power redundancy; fully functional natively under IP Services firmware, supports up to four power stack members in one power domainCisco.

Power & Port Hardware Design

3. Port & Hardware Specifications

• Front Downlink Slots: 12 × Hot-swappable GE SFP fiber slots (1000BASE-SX/LX/LH/ZX/CWDM SFP compatible, no RJ45 copper ports, zero 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 fully active under IP Services 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 120W under full load
• Front Panel LED Indicators: Per-port link/activity, speed status; global system fault LED, power status indicator, stack member ID LED
• 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: 4.1 kg (9.0 lbs) with single 350W power supply
• Memory: 256 MB DRAM, 128 MB onboard flash memory for IOS universal image, startup-config / running-config files太平洋科技
• Switching Fabric: 160 Gbps full-duplex non-blocking stack-wide capacity
• Forwarding Rate: 35.7 Mpps wire-speed Layer 2 / full Layer 3 forwarding for 64-byte packets太平洋科技
• MAC Address Table: Up to 12,000 unicast MAC entries
• VLAN Capacity: IP Services full limit 1005 active IEEE 802.1Q tagged VLANs (VLAN ID range 1–4094)
• Multicast Groups: Up to 1024 IPv4 CGMP snooping / full PIM multicast routing groups
• Jumbo Frame Support: Up to 9000 bytes on all SFP/SFP+ uplink ports and front GE SFP fiber slots
• MTBF: 180,000 hours under standard data center office operating conditions
• Warranty: Cisco Enhanced Limited Lifetime Hardware Warranty (LLW): Next-business-day advance hardware replacement, 90-day complimentary Cisco TAC technical support

4. Layer 2 + Full IP Services Multilayer IOS Full Feature Set

Core Layer 2 Switching & QoS Core Functions

• Up to 1000 IEEE 802.1Q tagged VLANs, VTPv3 dynamic VLAN synchronization, MSTP 802.1s multiple spanning tree
• Dual trunk encapsulation: Cisco proprietary ISL trunk + IEEE 802.1Q standard trunk on all SFP/SFP+ ports
• IEEE 802.1p CoS / DSCP multilayer QoS, 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 stacks
• Voice VLAN dedicated VoIP separation, Auto QoS automatic voice traffic marking
• Cisco EnergyWise power management to reduce idle stack 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
• Full 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)
• Full Flexible NetFlow for end-to-end traffic visibility (Lite version limited on IP Base/LAN Base)

Exclusive IP Services Full Multilayer Layer 3 Routing Suite (Not Available in IP Base / LAN Base)

• Hardware wire-speed IPv4 inter-VLAN routing via SVI switched virtual interfaces
• Static default route, static prefix routing, RIP v1 / RIP v2 interior gateway protocols
• Complete interior gateway protocols: Full multi-area OSPF, full EIGRP, EIGRPv3 for IPv6
• Exterior gateway protocol: BGPv4 for IPv4 inter-domain core routing
• Multicast routing suite: Full PIM sparse / dense / sparse-dense mode, DVMRP multicast tunneling, full IPv6 PIM multicast routing
• First-hop redundancy protocols: HSRP, VRRP for IPv4 and IPv6 gateway redundancy, cross-stack HSRP fully supported
• Policy-Based Routing (PBR) for flexible traffic steering based on ACL match criteria
• WCCP v2 web cache redirection support for centralized web proxy load balancing
• Full Layer 3 ingress / egress access control lists for routed subnet traffic filtering
• Equal-cost multi-path (ECMP) routing for Layer 3 load balancing across multiple fiber uplinks
• Complete full IPv6 Layer 3 dynamic routing: OSPFv3, EIGRPv6, BGPv6
• Fallback bridging for non-IP inter-VLAN traffic forwarding

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 + Layer 3 ingress / egress access control lists for granular inbound/outbound 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 core fiber 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 device 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 SFP slots 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 Full-Feature Fiber Core Aggregation Switch: 12 GE SFP fiber slots connect remote building access switch stacks via multi-mode/single-mode fiber; modular SFP+ 10G uplink builds long-distance fiber trunk to central data center core router. Full IP Services complete dynamic routing suite (OSPF/EIGRP/BGP/PIM/IPv6) eliminates dedicated core router hardware for multi-building fiber campus segmentation, unified StackWise Plus stacking enables linear core capacity expansion as campus buildings scale.
2. Multi-Building K-12 Campus Fiber Backbone Converged Network: All-fiber SFP ports link geographically separated classroom access stacks; 10G SFP+ uplink connects to central campus data center for cross-building IPTV and teaching video traffic. Full PIM multicast optimizes cross-building video broadcast distribution, complete OSPF dynamic routing supports multi-campus inter-subnet communication without external border routers.
3. Medium Regional Branch Wiring Closet Main Fiber Multilayer Switch: Universal GE SFP fiber ports connect remote office desktop stacks and surveillance optical aggregators; long-distance single-mode 10G fiber uplink links to corporate headquarters data center. Complete IP Services full dynamic routing suite enables multi-subnet branch design with HSRP gateway redundancy, meeting full enterprise branch routing, multicast and IPv6 compliance requirements without external dedicated core router investment.
4. Small Data Center Top-of-Rack Fiber Aggregation Switch: 12 GE SFP slots connect server fiber NICs and storage SAN switches; 10G SFP+ uplink links to data center core aggregation layer, jumbo frame support optimizes virtualization and storage traffic, stackable architecture allows linear server pod expansion.
5. Legacy Distributed Fiber Gigabit Backbone Network Refresh Hardware: Drop-in stackable full-feature fiber replacement for lower-tier IP Base WS-C3750X-12S-S switches, fully compatible with existing StackWise Plus stacking infrastructure, upgrades to complete dynamic Layer 3 inter-VLAN routing and multicast capability 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)