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WS-C4503
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Cisco WS-C4503 Catalyst 4500 Chassis Switch
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Name:
WS-C4503
- Description:
- Cisco WS-C4503 Catalyst 4500 Chassis Switch
- Rating:
Added to cart 28 times recently
- Availability:
Ready to Ship
- Brand:
- Cisco
- GTIN:
- 0799599493910
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 90
- List Price:
$995.00
- Price:
$447.0855.1% off
Quantity:
1
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Modular Access Switching for Existing Enterprise Networks
WS-C4503 is a three-slot modular chassis for enterprise access switching, not a fixed-port switch with installed uplinks. The Catalyst 4500 assembly takes its network connections from separately selected line cards and its switching and routing behavior from the supervisor and software. No access ports or endpoint power are included in the bare chassis order. Discontinued WS-C4506 provides six slots instead of three for a larger legacy assembly. Cisco Catalyst 4503 purchases therefore require a component-level equipment list rather than selection by port count or license suffix alone.
WS-C4503 price for new stock is $502.95, a 49.5% saving from the Cisco list price of $995.00. WS-C4503 refurb price is $447.08. WS-C4503 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WS-C4503 for additional pricing. Browse the full Cisco 4507 Catalyst 4500 Chassis series or explore all Cisco products.
Technical Details
64 Gbps switching capacity and 48 Mpps forwarding apply to assemblies using WS-X4013+ Supervisor Engine II-Plus; the empty chassis requires compatible interface cards and power before forwarding traffic. WS-C4503 accepts separately ordered power components, including PWR-C45-1000AC for data-only AC configurations and PWR-C45-1400DC-P for the DC migration configuration. These supply ratings are not the chassis's power consumption. Operating temperatures from 0°C to 40°C require placement within that ambient range. The WS-X4593= spare fan tray matches the chassis cooling assembly, while fan faults can be indicated through LED, CLI and SNMP.
Ordering
WS-C4503 is offered new sealed and certified refurbished; refurbished chassis are inspected and bench-tested for module bay recognition and fan status. Specify this switch as a chassis line item and itemize the required hardware, condition and quantity before submitting the purchase order. ORM warranty terms are up to 3-year extended coverage for new units and up to 1 year for certified refurbished units, with 30-day returns on every condition; terms apply. Enterprise and volume orders can use accepted POs, Net-30 for government, and RMA with advance replacement, with regional stock and RMA coverage across the UK, EU, US and MEA.
Key Specs
| Key Specs | Key Spec Values |
|---|---|
Port Configuration | 3 chassis slots / no fixed access ports |
Cooling | 1 fan tray / WS-X4593= spare |
Replaces | WS-C4003-S1: July 26, 2004 / WS-C4003-S1-DC: May 3, 2005 |
Ships Without | Power supply |
Lifecycle Status | End of sale July 31, 2010; support ended July 31, 2015 |
Replacement PID | C9404R via discontinued WS-C4503-E |
WS-C4503 Specifications
- Manufacturer Part Number
- WS-C4503
- Brand
- Cisco
- Series
- Catalyst 4500
- Use Case
- Enterprise Access
- Management Type
- Managed
- RJ-45 Access Port Count
- 0
- Power Input
- PWR-C45-1000AC AC PSU / PWR-C45-2800ACV AC PSU / PWR-C45-1400DC-P DC PSU
- Uplink Type
- Modular (module sold separately)
- PoE Support
- Non-PoE
- Switching Capacity
- 64 Gbps
- Forwarding Rate
- 48 Mpps
- Form Factor
- Chassis
- Redundant PSU
- Optional
- Cooling
- Fan-tray cooling (WS-X4593= spare)
- Operating Temperature
- 0°C to 40°C
- Cisco Warranty
- Ended; standard Cisco support ended July 31, 2015
- Certifications
- UL 60950 / IEC 60950 / FCC Part 15 Class A
- Height
- 311.2 mm
- Width
- 439.7 mm
- Depth
- 317 mm
- Weight
- 34.02 kg
WS-C4503 Use Case
Enterprise Campus Core Aggregation with WS-C4503-Cisco switch 4500 Chassis (3-Slot), fan, no p/s
In a multinational corporation’s campus network, the WS-C4503-Cisco switch 4500 Chassis (3-Slot), fan, no p/s serves as the core aggregator for 10GbE uplinks from multiple distribution switches. By deploying redundant Supervisor Engine modules and EtherChannel across workgroup uplinks, IT teams achieve sub-millisecond failover and ultra-low latency. Benefit: Delivers high availability, future-proof scalability, and simplified centralized management for mission-critical applications.
Data Center Leaf Access for Virtualized Server Farms
A retail data center integrates the WS-C4503-Cisco switch 4500 Chassis (3-Slot), fan, no p/s as a leaf switch to connect hypervisor clusters and SAN gateways. With modular line cards supporting 40GbE and advanced QoS profiles, the chassis handles east-west VM traffic surges and low-latency storage replication. Benefit: Ensures predictable performance for virtualization, on-the-fly bandwidth allocation, and non-disruptive upgrades, maximizing server consolidation ROI.
Service Provider Edge Aggregation for Metro Ethernet
A regional service provider deploys the WS-C4503-Cisco switch 4500 Chassis (3-Slot), fan, no p/s at PoP sites to aggregate customer CPE circuits over Metro Ethernet. Leveraging Cisco IOS MPLS L2VPN and hierarchical QoS, the platform enforces SLA-driven policing and rapid convergence on fiber failures. Benefit: Provides deterministic bandwidth guarantees, scalable port density, and carrier-grade reliability to meet stringent SLAs and lower OPEX.
Best For
Legacy Chassis Replacement
An installed WS-C4003-S1 assembly creates a component-matching purchase rather than a like-for-like bundle reorder. Its replacement configuration changes the supervisor and power components, so copying the original bundle description can omit required hardware. Match WS-X4515 and PWR-C45-1000AC against the retained components before issuing the PO.
Assembly and Staging
A staging team assembling separately held components must verify slot roles before testing. Slot 1 accepts the supervisor, while slots 2 and 3 accept line cards; these roles are not interchangeable. Record each component's part number and intended slot on the purchase order before authorizing assembly.
Not Suitable If
Redundant supervisor engines
WS-C4503 has one supervisor slot and does not support supervisor redundancy. Adding a second power supply cannot add another supervisor or change that control-plane restriction.
Current Cisco service coverage
WS-C4503 passed its last standard support milestone on July 31, 2015. C9404R is the current migration destination, with four chassis slots rather than three.
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Product Comparison Table 
| WS-C4503 |  WS-C4507R-E |  WS-C4503-E |  WS-C4500X-24X-IPB |  WS-C4510R+E | |
|---|---|---|---|---|---|
| Depth | 317 mm | 317 mm | 317 mm | 533 mm | 317 mm |
| Form Factor | Chassis | Chassis | Chassis | Rack-Mount 1U | Chassis |
| Height | 311.2 mm | 487.4 mm | 311.2 mm | 44 mm | 618.4 mm |
| Manufacturer Part Number | WS-C4503 | WS-C4507R-E | WS-C4503-E | WS-C4500X-24X-IPB | WS-C4510R+E |
| Width | 439.7 mm | 439.7 mm | 439.7 mm | 438 mm | 439.7 mm |
Compliance & Warranty
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Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
U
Umar Rhodes
Reviewed on the 15 June 2026
5
3-slot Catalyst 4500 chassis offers reliable performance with professional-grade build quality.
V
Vivian Lane
Reviewed on the 4 November 2018
4
Easy to integrate into existing networks with minimal downtime.
W
Wesley Barrett
Reviewed on the 7 February 2024
5
Durable chassis providing consistent throughput for mid-sized deployments.
X
Xander Kane
Reviewed on the 12 April 2017
4
Professional solution with solid performance and easy management.
Y
Yasmin Frost
Reviewed on the 8 June 2018
4
Reliable and efficient for small to medium enterprise backbone links.
Questions & Answers
What does the WS-C4503 part number identify?
WS-C4503 identifies a Catalyst 4500 three-slot chassis with a fan and no power supply. The identifier describes the chassis order, not an access-port count, uplink code or included software tier. Specify the supervisor, line cards and compatible power supply separately when preparing the component list.
How is WS-C4503 managed?
WS-C4503 management is supplied by its installed supervisor through CLI, Telnet, SNMPv1, SNMPv2c, CiscoView and CiscoWorks LMS; TFTP and BOOTP support management operations. The empty chassis has no independent configuration interface. Verify the supervisor software and required access method together before configuring the completed assembly.
Is WS-C4503 end of life?
WS-C4503 reached end of sale on July 31, 2010, and its last standard Cisco support milestone was July 31, 2015. Its immediate replacement, WS-C4503-E, is also discontinued and reached its last support date October 31, 2025. C9404R is the current four-slot migration destination.
What condition and warranty options does ORM offer for WS-C4503?
ORM offers WS-C4503 new sealed with up to a 3-year extended warranty and certified refurbished with up to 1 year. Every condition includes 30-day returns; terms apply. Cisco's original hardware warranty was 90 days, and standard service ended July 31, 2015. ORM coverage is separate from Cisco's ended warranty.
Which software licenses apply to WS-C4503?
WS-C4503 software licensing follows the selected supervisor: basic Layer 3 includes RIP and static routes, while enhanced Layer 3 adds OSPF, IGRP and EIGRP. RMON requires an RMON agent license, and BGP4 requires an InterDomain Routing license. Specify software and feature entitlements separately from the chassis.
Which older chassis does Cisco Catalyst 4503 replace?
Cisco Catalyst 4503 was a chassis replacement option for WS-C4003-S1 and WS-C4003-S1-DC, not a complete bundle retaining their original supervisors and supplies. WS-C4003-S1 ended sale July 26, 2004; WS-C4003-S1-DC ended sale May 3, 2005. Match the replacement assembly's supervisor and AC or DC power components before ordering.
What is the difference between WS-C4503 and WS-C4506?
WS-C4506 has six chassis slots where WS-C4503 has three, accommodating a larger legacy assembly. Both models are discontinued. WS-C4503 serves an existing three-slot component plan; WS-C4506 matches a six-slot legacy inventory. Neither chassis represents the current migration destination for a new-generation equipment purchase.
What is the difference between WS-C4503 and WS-C4507R?
WS-C4507R supports redundant WS-X4515 Supervisor Engine IV modules, while WS-C4503 has one supervisor slot and no supervisor redundancy. Both chassis are discontinued. WS-C4503 fits a single-supervisor legacy assembly; WS-C4507R addresses a legacy dual-supervisor component plan rather than serving as a current-platform purchase.
What is the difference between WS-C4503 and C9404R?
C9404R is the current four-slot migration destination, while WS-C4503 is a discontinued three-slot chassis with a July 31, 2015 standard support milestone. The replacement chain passes through discontinued WS-C4503-E. WS-C4503 belongs in legacy component matching; C9404R belongs in a separately specified current chassis refresh.
Can WS-C4503 operate without separately ordered components?
No, WS-C4503 requires a compatible supervisor, line cards and at least one power supply before it can operate. PWR-C45-1000AC is a compatible data-only AC supply, ordered separately. List the required component PIDs and confirm which existing parts will be transferred before issuing the purchase order.