Cisco Catalyst WS-C4503-E Full English Product Description

1. Short Sales Title

2. Official Product Overview

Model Suffix Breakdown

• WS-C: Cisco Catalyst LAN Switch Platform Identifier
• 4503: Catalyst 4500 series, 3 total modular slot chassis
• -E: Enhanced E-series chassis with CenterFlex fabric, scalable 48Gbps slot bandwidth, full UPOE/ePoE power support, compatible with modern E-series supervisors and line cards

Chassis Slot Layout Definition

1. Slot 1: Fixed dedicated supervisor engine slot (single supervisor only; no redundant supervisor failover, SSO/NSF/ISSU unsupported)
2. Slot 2, Slot 3: Hot-swappable line card expansion slots, auto-negotiable 6/24/48 Gbps per slot bandwidth matching installed line card generation
3. Rear compartment: Dual independent hot-swappable power supply bays, supporting 1+1 N+1 power redundancy
4. Front lower bay: Single integrated hot-swappable cooling fan tray

Supported Supervisor Engines

• Supervisor Engine 6-E, 6L-E
• Supervisor Engine 7-E, 7L-E
• Supervisor Engine 8-E, 8L-E
  All E-series supervisors run Cisco IOS 12.2(54)SG+ / IOS XE train, equipped with CenterFlex switching ASICs for wire-speed Layer 3, IPv6 and advanced PoE schedulingCisco.

Supported Line Card Modules

1. Classic 6 Gbps line cards: 24/48-port 1G copper non-PoE / PoE / PoE+, SFP Gigabit fiber uplink cards
2. E-series high-speed 24/48 Gbps line cards: High-density 1G/10G fiber, UPOE (60W per port), ePoE (90W per port) high-power access modules
   Max PoE power per slot reaches 1500W, supporting full UPOE/ePoE high-power endpoints like telepresence, Wave2 Wi-Fi 6 APs and industrial cameras.

3. Hardware & Physical Specifications

Core Backplane & Switching Fabric

• Total modular slots: 3 (1 supervisor slot, 2 line card slots)
• Per-slot bandwidth: Dynamic auto-sensing 6 / 24 / 48 Gbps full-duplex per line card slot (CenterFlex enhancement over classic fixed 6Gbps)
• Switching architecture: Centralized non-blocking CenterFlex ASIC fabric via supervisor engine
• Max port density: Up to 96×1G copper via dual 48-port line cards; up to 48×1G/10G SFP fiber ports
• MAC address table capacity: Up to 131072 MAC entries (E-supervisor upgraded capacity)
• TCAM size: Up to 128,000 ACL/QoS security flow entries
• Jumbo frame support: Up to 9198 bytes across all copper and fiber interfaces

Power System

• Power supply bays: 2 hot-swappable redundant slots (1+1 power failover supported)
• Supported PSU models: AC 1000W / 1400W, PoE-capable ACV 1300W / 2800W / 4200W / 6000W / 9000W, DC 1400W triple-input telecom PSU
• Input voltage: AC 100–240V 50/60Hz; DC –48V standard telecom power
• Total maximum PoE budget: Up to 5400W with dual 6000W ACV PoE power supplies
• Hot-swap live replacement: PSU can be swapped without chassis shutdown

Cooling System

• Fan tray: Single integrated hot-swappable variable-speed fan assembly pre-installed with chassis
• Airflow direction: Right-to-left internal module airflow, front-to-back power supply airflow
• Status monitoring: Real-time fan speed, temperature and fault alert via console, SNMP and chassis LED indicators

Physical & Environmental Parameters

• Rack form factor: 7 RU standard 19-inch rack mount, optional 23-inch rack mounting brackets included
• Dimensions (H × W × D): 31.12 cm × 43.97 cm × 31.70 cm (12.25 × 17.31 × 12.50 inches)Cisco
• Weight: 14.63 kg (32.25 lbs) bare chassis with fan tray; fully loaded max weight 34 kg (75 lbs)
• Operating temperature: 0°C to 40°C (32°F–104°F); extended altitude down to -60m up to 3000m
• Storage temperature: -40°C to 75°C (-40°F–167°F)
• Relative humidity: 10%–90% non-condensing
• Compliance Certifications: FCC Class A, UL 60950, CE, VCCI Class A, NEBS Level 3, RoHS compliant
• MTBF: 1,064,279 hours under standard enterprise operating environmentCisco

Supervisor Out-of-Band Management Interfaces

• RJ45 RS232 serial console port
• Mini USB console port on 7-E / 8-E supervisors
• Dedicated 10/100BASE-T out-of-band Ethernet management port
• Dual SFP / SFP+ uplink slots (1G / 10GE based on supervisor model)
• System LED bank: Power, fan, module, uplink, fault, UID beacon status indicators

4. Full Layer 2 & Layer 3 IOS Feature Set

Layer 2 Switching Features

• IEEE 802.1D STP, 802.1w Rapid STP, 802.1s MSTP
• Maximum 4096 VLANs, 802.1Q trunking + ISL trunk encapsulation
• Private VLAN, Q-in-Q VLAN stacking for service provider multi-tenant isolation
• Port security, static/dynamic MAC address learning, MAC filtering
• 802.3ad LACP static EtherChannel link aggregation (max 8 ports per bundle)
• Broadcast/multicast/unicast storm suppression
• IGMPv1/v2/v3 snooping, CGMP for VoIP and IPTV multicast optimization
• Voice VLAN auto-detection for Cisco IP phones
• 802.3x full-duplex flow control
• SPAN local port mirroring, RSPAN remote traffic analysis

Layer 3 Routing & Multicast (IP Base / IP Services IOS Images)

• Static routing, RIP v1/v2, full multi-area OSPF, full EIGRP, BGPv4/BGPv6
• Wire-speed SVI inter-VLAN routing
• Native IPv4 / IPv6 dual-stack hardware forwarding
• Full PIM-SM / PIM-DM / PIM-SSM multicast routing, MSDP
• ECMP equal-cost multi-path load balancing
• Policy-Based Routing (PBR) (IP Services license only)
• VRF-Lite multi-tenancy segmentation (7-E / 8-E supervisors)

Advanced QoS & Traffic Prioritization

• Hierarchical MQC modular QoS policy framework
• 8 hardware priority queues per physical port, 802.1p CoS / DSCP bidirectional mapping
• Ingress policing, egress shaping, traffic marking and remarking
• Auto-QoS pre-built templates for VoIP, video conferencing, IP surveillance
• Dedicated expedite voice queue for PoE IP phone traffic

Enterprise Security Suite

• IEEE 802.1X port-based NAC authentication, RADIUS/TACACS+ AAA integration
• DHCP Snooping, Dynamic ARP Inspection (DAI), IP Source Guard, uRPF
• Port ACL, VACL, Route ACL hardware-based traffic filtering
• IEEE 802.1AE MACsec link encryption on 10GE uplink ports
• SSHv2 encrypted CLI management, SNMPv3 secure monitoring
• Control Plane Policing (CoPP) to protect supervisor CPU from DDoS
• Rogue AP detection, private VLAN host isolation

Full High-Power PoE Power Management

• IEEE 802.3af PoE (15.4W), 802.3at PoE+ (30W), Cisco ePoE (90W), UPOE (60W) line card supportCisco
• Per-port power priority scheduling for critical voice, video and wireless endpoints
• Real-time power budget monitoring, automatic power throttling for over-subscription protection
• Cisco EnergyWise power saving management for idle PoE devices

5. High Availability Capabilities

• Dual hot-swappable redundant AC/DC power supplies (1+1 power failover)
• Hot-swappable fan tray, line cards and power supplies (OIR Online Insertion and Removal, no chassis shutdown for replacement)
• All interface modules support live hot-swap without service interruption
  Critical Limitation: Single fixed supervisor slot design; redundant supervisor, SSO stateful switchover, NSF nonstop forwarding and ISSU in-service software upgrades are not supported (reserved for R-series redundant chassis like WS-C4507R+E / WS-C4510R+E).

6. Typical Deployment Scenarios

1. Medium Enterprise Wiring Closet Aggregation

   Compact 7RU footprint fits standard rack wiring closets; dual E-series UPOE line cards deliver high-density high-power PoE for office IP phones, Wave2 Wi-Fi APs and PTZ cameras, with 10GE supervisor uplinks to campus core routers.
2. Regional Branch Office Core Switch

   Serves as standalone core for remote multi-VLAN branch networks, integrating inter-VLAN Layer 3 routing, full UPOE power delivery and fiber WAN uplink aggregation without large 6/10-slot chassis footprint.
3. Mid-Size School / Hospital Building Distribution Switch

   Aggregates multiple floor access switches via 10G fiber trunks, supports multicast IPTV, unified VoIP and medical high-power PoE thin clients with scalable 48Gbps line card bandwidth for future expansion.
4. SMB Mini Data Center Leaf Switch

   High-speed E-series fiber line cards connect server racks and storage arrays; 40G-capable supervisor uplinks trunk to spine layer, providing wire-speed Layer 3 leaf-spine forwarding for small enterprise data centers.
5. Legacy Catalyst 4500 Infrastructure Upgrade

   Drop-in replacement for classic WS-C4503 chassis, backward compatible with existing classic line cards while enabling upgrade to modern E-series high-speed/UPOE modules to extend network lifecycle.

7. Standard Package Contents

Items Sold Separately (Not Included)

• E-series Supervisor Engine (6-E / 7-E / 8-E variants)
• AC / DC redundant power supply units (PoE or non-PoE models)
• Classic or E-series Gigabit copper/fiber PoE/PoE+/UPOE/ePoE line cards
• SFP / SFP+ / XFP optical transceivers for uplink ports
• Console cable, cable management accessories

Short Commercial Catalog Version (For Quotation & Datasheet Use)