Cisco Catalyst WS-C3750G-16TD-S Full English Product Description

1. Short Sales Title

2. Official Product Overview

Model Suffix Breakdown

• 3750G: Catalyst 3750 Gigabit stackable multilayer platform, StackWise 32Gbps full-duplex stacking bus, single fixed power supply (no StackPower redundant power stacking, no hardware MACsec on non-X original 3750G hardware)
• 16: Sixteen front-panel 10/100/1000BASE-T full Gigabit copper downlink ports (zero PoE hardware)
• T: All copper Gigabit desktop ports; D: Single rear XENPAK 10-Gigabit uplink slot (10G aggregation); final S: IP Base baseline enterprise multilayer IOS firmware (SMI Standard Multilayer Image)Cisco

Core IP Base Feature Differentiation vs LAN Base / IP Services

Stacking Architecture

Power & Port Hardware Design

3. Port & Hardware Specifications

• Downlink/Aggregation Ports: 16 × 10/100/1000BASE-T RJ45 auto-sensing Gigabit copper, auto MDI-X, full-duplex, no PoE circuits
• Rear Uplink Interface: 1 × hot-swappable XENPAK 10-Gigabit Ethernet slot (10GBASE-SR/LR/ER XENPAK transceivers; no SFP slots)
• Local Out-of-Band Console: RJ45 RS232 serial out-of-band configuration port
• Stack Interfaces: Dual StackWise 32Gbps stacking connectors for stack interconnection
• Stacking: No StackPower redundant power stacking support
• Power Supply: Fixed single 120W AC auto-ranging 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, 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 Design: Variable-speed front-to-back fan cooling; 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) × 301 mm (D) / 17.5 × 1.73 × 11.8 inches
• Unit Weight: 4.1 kg (9.0 lbs)
• Memory: 128 MB DRAM, 16 MB onboard flash memory for IOS universal image, startup-config / running-config filesCisco
• Switching Fabric: 32 Gbps full-duplex non-blocking stack-wide capacity
• Forwarding Rate: 13.1 Mpps wire-speed Layer 2 / baseline Layer 3 forwarding for 64-byte packets
• MAC Address Table: Up to 12,000 unicast MAC entries
• VLAN Capacity: IP Base limit 1000 active IEEE 802.1Q tagged VLANs (VLAN ID range 1–4094)
• Multicast Groups: 256 IPv4 CGMP snooping groups + PIM stub multicast routing support
• Jumbo Frame Support: Up to 9000 bytes on all Gigabit copper downlinks and XENPAK 10G uplink
• MTBF: 180,000 hours under standard office operating conditions
• Warranty: Cisco Standard Limited Lifetime Hardware Warranty (LLW): Next-business-day advance hardware replacement, 90-day complimentary 8×5 TAC technical support

4. Layer 2 + IP Base Baseline Layer 2 & Layer 3 IOS Full Feature Set

Core Layer 2 Switching & QoS Core Functions

• Up to 1000 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, 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 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
• Full IPv6 dual-stack Layer 2 switching: IPv6 Snooping, IPv6 ACL, IPv6 QoS marking, IPv6 neighbor discovery

Exclusive IP Base Baseline Layer 3 Routing Restrictions

• 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
• Limited interior gateway support: EIGRP stub routing only (no full multi-area EIGRP)
• Multicast support: PIM stub multicast routing (no full PIM sparse-dense mode)
• First-hop redundancy protocols: HSRP, VRRP for IPv4 gateway redundancy, cross-stack HSRP supported
• Basic Layer 3 ingress ACL for routed subnet traffic filtering
• Equal-cost multi-path (ECMP) static route load balancing across multiple uplink paths
• No full OSPF / EIGRP / BGP dynamic core routing; no full IPv6 Layer 3 dynamic routing (requires IP Services license upgrade)
• No policy-based routing (PBR) or WCCP web cache redirection

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 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

5. Full Management Interfaces

1. Local Out-of-Band: RJ45 RS232 serial console port for offline configuration without network connectivity
2. Secure Remote CLI: SSH v2 encrypted command-line access; fallback unencrypted Telnet
3. Embedded Web GUI: Lightweight browser-based graphical manager for port, VLAN, QoS and uplink configuration
4. SNMP v1/v2c/v3: Compatible with Cisco Prime, DNA Center and third-party network monitoring platforms
5. Local Storage: 128 MB flash memory for IOS image, startup-config and running-config files; no external USB storage port

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 Standalone Pure-Gigabit Core Aggregation Switch: 16 Gigabit copper ports connect access-layer switch stacks; single XENPAK 10G uplink builds long-distance fiber trunk to central data center core router. IP Base baseline static/RIP inter-VLAN routing eliminates small core router hardware for simple multi-VLAN campus segmentation, unified StackWise stacking enables linear core capacity expansion as office scale grows.
2. Small Multi-Building K-12 Campus Backbone Converged Network: All-copper Gigabit ports link classroom access stacks; 10G fiber uplink connects to central campus data center for cross-building IPTV and teaching traffic. MSTP prevents broadcast loop failures across geographic VLAN domains, flat multi-subnet baseline routing meets entry-level campus backbone requirements without expensive full IP Services license investment.
3. Medium Regional Branch Wiring Closet Main Multilayer Switch: Universal Gigabit non-PoE ports connect branch office desktop and surveillance data aggregators; long-distance single-mode 10G fiber uplink links to corporate headquarters data center. IP Base baseline EIGRP stub + HSRP gateway redundancy satisfies basic enterprise branch multi-VLAN routing compliance without external dedicated core router hardware.
4. Small Data Center Top-of-Rack Switch: 16 Gigabit copper ports connect server NICs; 10G XENPAK uplink links to data center aggregation layer, jumbo frame support optimizes virtualization and storage traffic, stackable architecture allows linear server pod expansion.
5. Legacy Distributed Gigabit Backbone Network Refresh Hardware: Drop-in 10G stackable aggregation replacement for non-10G Catalyst 3750G switches, fully compatible with existing StackWise stacking infrastructure, adds baseline hardware CEF inter-VLAN routing and 10G core uplink 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)