Cisco Catalyst WS-C3850-48XS-S Full English Product Description

1. Short Sales Title

2. Official Product Overview

Model Suffix Breakdown

• 3850: Next-gen stackable unified access/aggregation multilayer switch platform with UADP ASIC, StackWise-480 stacking, hot-swappable power/fan modules, integrated full wireless mobility controller
• 48: Forty-eight front-panel 10G SFP+ fiber downlink ports
• XS: All-fiber 10G SFP+ downlink variant, fixed 4×40G QSFP+ uplinks, no PoE power support
• S: IP Base IOS XE feature set (baseline Layer 3 dynamic routing, full unified wireless mobility controller, max 4000 VLANs, cross-stack HSRP/VRRP redundancy support)

Three IOS XE Feature Tier Comparison for Catalyst 3850 XS-series

1. LAN Base (WS-C3850-48XS-L): Pure Layer 2 only, limited static inter-VLAN routing, max 255 VLANs, lightweight limited CAPWAP AP termination only, all dynamic routing protocols disabled, no HSRP/VRRP gateway redundancy, restricted Flexible NetFlow Lite, maximum 50 APs per stack.
2. IP Base (WS-C3850-48XS-S): All LAN Base features + Static / RIP / EIGRP stub / PIM stub multicast routing, HSRP/VRRP gateway redundancy, full cross-stack wireless mobility controller, 4000 VLAN IDs, complete Flexible NetFlow Lite, IPv6 stub dynamic routing, cross-stack Layer 3 replication, support for up to 100 CAPWAP APs and 2000 concurrent wireless clients per stack.
3. IP Services (WS-C3850-48XS-E): All IP Base features + full multi-area OSPF, full EIGRP, BGPv4, full PIM sparse-dense multicast, complete end-to-end IPv6 dynamic routing, PBR, WCCP v2, VRF-Lite multi-tenancy, full Flexible NetFlow v9, WIDS/WIPS wireless intrusion prevention, TrustSec & MACsec link encryption.

Stacking Architecture

• StackWise-480 480Gbps full-duplex stacking bus: Up to nine identical Catalyst 3850 XS switches can be interconnected into a single logical stack under unified IP management plane, supporting distributed wire-speed Layer 2/Layer 3 forwarding, cross-stack EtherChannel link aggregation, cross-stack RSPAN port mirroring, cross-stack HSRP gateway redundancy, and cross-stack wireless AP mobility replication. StackWise-480 stacking cables sold separately as optional accessoriesCisco.
• Unified wireless stack domain: IP Base license supports full CAPWAP mobility, centralized AP licensing, full CleanAir RF spectrum monitoring, rogue AP detection, seamless cross-stack roaming, up to 100 APs and 2000 wireless clients per stack, maximum 40G wireless throughput per 48-port XS modelCisco.
• StackPower compatible: Enables power sharing across stacked switches when paired with StackPower cables and optional dual power supply tray kit for redundant chassis power distribution (no PoE load sharing on this fiber-only model).

Power & Port Hardware Design

1. 48 × SFP+ 10G fiber downlink slots (support 10G/1G SFP/SFP+ transceivers)
2. 4 × fixed QSFP+ 40G uplink slots (hardware-built, no replaceable uplink module)
   Rear panel interfaces include RJ45 RS232 serial console, USB Type-A flash storage port, dedicated out-of-band 10/100/1000BASE-T RJ45 management port, dual StackWise-480 stacking connectors, dual power supply bays, redundant hot-swappable fan trays, and Kensington security lockCisco. All fiber ports support Energy-Efficient Ethernet (EEE).

3. Port & Hardware Specifications

• Front Downlink Ports: 48 × SFP+ slots, 10G/1G auto-sensing fiber, support SFP/SFP+ optical transceivers
• Fixed Uplink Ports: 4 × QSFP+ 40G fiber uplink ports (integrated, non-modular)
• Local Management Interfaces: RJ45 serial console, USB Type-A flash storage, dedicated out-of-band 10/100/1000BASE-T RJ45 management port
• Stack Interfaces: Dual StackWise-480 480Gbps stacking connectors
• Power Supply: Single modular 350W AC auto-ranging unit; optional second redundant 350W AC PSU for dual power redundancy; input 100–240V AC 50/60Hz; zero PoE/UPOE power budget
• Front Panel LEDs: Per-port link/activity/speed indicators; global system fault, power, stack member ID, wireless status, UID beacon LEDs
• Mounting: Standard 19-inch 1RU rack-mount brackets included; wall-mount adapter optional, desktop rubber anti-slip feet supplied
• Thermal Envelope: Triple redundant hot-swappable variable-speed fan trays; operating temperature -5°C ~ +45°C up to 1500m altitude, storage -40°C ~ +70°C, relative humidity 10–95% non-condensing
• Compliance 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) × 511 mm (D) / 17.5 × 1.75 × 20.1 inches
• Unit Weight: 7.45 kg (16.4 lbs) with single 350W power supply
• Memory: 8 GB DRAM, 8 GB onboard flash memory (48-port XS series upgraded memory vs copper 3850 models)Cisco
• Switching Fabric: 1280 Gbps full-duplex non-blocking per-chassis capacity
• Forwarding Rate: 960 Mpps wire-speed Layer 2 / baseline Layer 3 forwarding for 64-byte packets
• MAC Address Table: Up to 32,000 unicast MAC entries
• VLAN Capacity: IP Base limit 4000 active IEEE 802.1Q tagged VLANs (VLAN ID range 1–4094)
• Multicast Groups: 4096 IPv4 CGMP snooping + PIM stub multicast routing groups
• Jumbo Frame Support: Up to 9198 bytes on all 10G/40G fiber ports
• Wireless Scale: Supports up to 100 CAPWAP wireless APs per standalone switch/stack, maximum 2000 concurrent wireless clients, 64 unique WLAN profiles, full RF monitoring, CleanAir spectrum analysis
• IPv4 Route Scale: Up to 24,000 IPv4 routed entries
• NetFlow Scale: 96,000 Flexible NetFlow Lite flow entries (higher capacity for 10G XS aggregation model)Cisco
• MTBF: 248,600 hours under standard data center/campus enterprise operating conditions
• Warranty: Cisco Enhanced Limited Lifetime Warranty (E-LLW)

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

Core Layer 2 Switching & Converged Wired-Wireless QoS Functions

• Up to 4000 IEEE 802.1Q tagged VLANs, VTPv3 dynamic VLAN synchronization, MSTP 802.1s multiple spanning tree
• Dual trunk encapsulation: Cisco ISL trunk + IEEE 802.1Q standard trunk on all SFP+/QSFP+ fiber ports
• Hierarchical IEEE 802.1p CoS / DSCP MQC QoS, 4 egress priority queues per port; Auto-QoS template optimized for VoIP, video conferencing and IPTV traffic prioritization
• 10G / 40G EtherChannel link aggregation (LACP / static PAgP), up to 8 bundled ports for uplink redundancy and cross-stack load balancing
• Rapid STP (802.1w), UplinkFast, BackboneFast, BPDU Guard, Root Guard, UDLD to eliminate Layer 2 switching loops
• Port security: Static MAC assignment, sticky dynamic MAC learning, configurable port shutdown violation actions
• Per-port broadcast/multicast/unicast storm control to mitigate flooding DoS attacks
• Local SPAN + cross-stack RSPAN port mirroring supported via StackWise-480 stacking
• CGMP (Cisco Group Management Protocol) to reduce redundant multicast flooding across unified wired/wireless domains
• Voice VLAN dedicated VoIP traffic segmentation, automated Auto QoS marking for fiber-connected IP telephony gateways
• Cisco EnergyWise intelligent power management to lower idle chassis 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 provisioning
• Full IPv6 dual-stack Layer 2 switching: IPv6 Snooping, IPv6 ACL, IPv6 QoS marking, IPv6 neighbor discovery
• Integrated Unified Wireless Controller: Mobility Agent & Mobility Controller dual modes, CAPWAP AP termination, unified wired/wireless ACL/QoS/policy enforcement, wireless rogue AP detection, 802.11r fast roaming support, baseline CleanAir RF spectrum management
• Full Flexible NetFlow Lite for granular wired/wireless traffic visibility (complete Flexible NetFlow v9 requires IP Services license upgrade)

Exclusive IP Base Baseline Layer 3 Routing Suite

• Hardware wire-speed IPv4 inter-VLAN routing via SVI switched virtual interfaces (maximum 1000 SVIs)
• Static default routing, 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 fully supported
• Basic Layer 3 ingress/egress ACL for routed subnet traffic filtering
• Equal-cost multi-path (ECMP) static route load balancing across multiple fiber uplinks
• Limited IPv6 stub dynamic routing (OSPFv3/EIGRPv6 stub mode)

IP Base Routing Limitations vs IP Services

• No full multi-area OSPF, full EIGRP, BGP inter-domain core routing
• No full PIM sparse / dense / sparse-dense multicast routing
• No policy-based routing (PBR), no WCCP web cache redirection, no DVMRP multicast tunneling
• No fallback bridging for non-IP inter-VLAN traffic
• No VRF-Lite multi-tenancy segmentation

Enterprise Security Feature Suite

• IEEE 802.1X port-based NAC authentication with RADIUS/TACACS+ AAA remote access control (unified wired/wireless NAC enforcement)
• 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 files, strong password encryption for local administrative credentials
• Wireless baseline security suite: WPA2/WPA3 enterprise, basic ISE identity services engine integration, rogue AP containment

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 XE image / config backup, dedicated out-of-band 10/100/1000BASE-T RJ45 management port
5. Stack & Wireless Management: Single unified IP management plane for entire StackWise-480 stack; centralized wireless AP licensing, RF and policy management across all stack members

6. Integrated Security Mitigation Suite

• Multi-level privilege CLI access with encrypted local user password storage
• IEEE 802.1X port authentication to validate wired/wireless 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 the 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+/QSFP+ 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 Converged Wired-Wireless Fiber Aggregation Switch: 48×10G SFP+ fiber downlinks connect building access switches, fiber-uplink medium-density Wi-Fi 6 AP pools and small rack servers; built-in 4×40G QSFP+ uplinks provide high-speed trunking to campus core routers. IP Base baseline static/RIP/HSRP inter-VLAN routing eliminates standalone aggregation routers for multi-VLAN fiber campus segmentation, StackWise-480 stacking enables linear aggregation-layer capacity expansion as fiber endpoint count grows.
2. Small/Medium K-12 / Higher Education Campus Fiber Backbone Converged Network: 10G SFP+ ports link classroom building fiber switches and student Wi-Fi trunk nodes; fixed 40G uplinks connect to central data center core switches for cross-campus distance learning video traffic. MSTP prevents broadcast loop failures across geographic VLAN domains, baseline multi-subnet routing meets entry-level campus convergence requirements without expensive IP Services advanced routing licenses.
3. Medium Regional Data Center Leaf Switch: All-fiber 10G downlinks connect server racks and storage arrays; 40G QSFP+ uplinks trunk to spine layer switches. IP Base EIGRP stub + cross-stack HSRP redundancy satisfies small DC leaf-spine multi-VLAN routing compliance without dedicated aggregation routers.
4. Medium Retail / Hotel / Healthcare Fiber Aggregation Pod: 10G fiber ports link lobby Wi-Fi gateways, backend POS servers and medical fiber-connected surveillance cameras; 40G uplinks connect to corporate WAN core switches, integrated unified wireless controller removes standalone WLC hardware cost for medium AP density commercial venues.
5. Legacy Catalyst 3750 Fiber Aggregation Refresh Hardware: Drop-in stackable IP Base upgrade replacement for aging LAN Base fiber switches, fully compatible with existing campus fiber uplink infrastructure, unlocks baseline dynamic Layer 3 inter-VLAN routing and full unified wireless mobility control for gradual migration to Catalyst 9500 fiber aggregation platforms without intermediate core router upgrades.

8. Standard Package Contents

Short Commercial Version (For Quotation & Product Catalog)