C8500-20X6C – router – rack-mountable

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C8500-20X6C

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C8500-20X6C Description

C8500-20X6C
C8500-20X6C is a Cisco Catalyst 8500 Edge Platform with 20 × 1/10GE SFP+ and 6 × 40/100GE QSFP interfaces, built for secure SD-WAN aggregation and high-performance routing at metro and data-center edges. It delivers up to 100 Gbps SD-WAN IPsec on IMIX and up to 350 Gbps with 1400-byte packets, scales to 8000 overlays (10000 per note), and achieves up to 500 Gbps IPv4 forwarding or 400 Gbps IPsec in autonomous mode. The platform includes 16 GB default DRAM (upgradeable to 64 GB), 16G/32G eUSB plus optional 2 TB NVMe SSD, dual high-efficiency PSUs, and IOS XE programmability for automation and zero-touch operations.

Product Highlights

SD-WAN IPsec Throughput(IMIX)
Max 10GE ports
IPv4 Forwarding Throughput(IMIX)

Quick Specs

Parameter

Specification

Ports

20 × 1/10GE SFP+; 6 × 40/100GE QSFP; all interfaces (total 800 Gbps) can be enabled simultaneously.

SD-WAN IPsec throughput (IMIX)

Up to 100 Gbps.

SD-WAN IPsec throughput (1400-byte)

Up to 350 Gbps.

SD-WAN overlay tunnels (controller mode)

8000 (up to 10000 per note).

IPv4 forwarding (autonomous, 1400B)

Up to 500 Gbps.

IPsec throughput (autonomous, 1400B)

Up to 400 Gbps.

IPsec SVTI tunnels (autonomous)

4000.

DRAM (default / max)

16 GB / 64 GB.

Storage (default / options)

16G eUSB (up to 32G eUSB); optional M.2 NVMe SSD 2 TB.

Redundancy

High-efficiency dual PSUs; software redundancy with two IOS processes (routing mode).

Form factor / size / weight

3RU; 5.22 × 17.25 × 26.85 in; 75–77.5 lb (AC configs).

Minimum software

Cisco IOS XE 17.10.1.

Key Features

Ultra-high throughput for large-scale SD-WAN

Provides up to 2 Tbps system capacity with a mix of 20 × 40/100GE and 6 × 10GE ports, delivering reliable performance for hyperscale aggregation, data centers, and service provider cores.

Flexible interface density

Combines QSFP28 and SFP+ ports to support both 10G and 40/100G connections, allowing seamless migration and interoperability across multiple WAN and data center environments.

Integrated multilayer security

Incorporates 256-bit WAN MACsec encryption, zone-based firewall, IPS, URL filtering, malware defense, and secure boot, ensuring zero-trust protection from edge to backbone.

Cloud-ready with dynamic core allocation

Powered by an x86-based SoC with flexible CPU core distribution between data plane and service plane, enabling scalable SD-WAN services and containerized applications at high speeds.

Carrier-grade resilience

Offers redundant AC/DC power supply options, hot-swappable fans, hardware root of trust, and trustworthy solutions 2.0 for continuous uptime in mission-critical deployments.

Compact yet modular 1RU platform

Supports up to 128 GB DRAM and multi-terabyte NVMe SSD storage, providing both density and expandability for enterprises and carriers seeking high-performance routing with future-proof investment protection.

Applications Scenarios

Internet gateway and DIA core at regional POP

terminate thousands of overlays, apply centralized security, and hand off at 40/100G to carriers and clouds.

Multicloud peering and data-mobility edge

sustain bulk replication and analytics flows with deterministic 40/100G uplinks and high autonomous throughput.

High-density enterprise aggregation hub

consolidate many 1/10G branch circuits into few 100G trunks with resilient control-plane design and programmable automation.

C8500-20X6C Front View

C8500-20X6C

1

Management Interface RJ-45

5

Micro-USB Console

2

Bay 0

6

Console RJ-45

3

Bay 1

7

USB 0

4

Power switch

8

USB 1

C8500-20X6C LED

1

Management interface LEDFlashing green : Link activity indicatorOff : No LinkSolid Green : Link with no activity

5

Power LEDOff : No power to chassis.Yellow : Power On, one power supply has failed or is not plugged in.Green : All power is within specifications

2

Management interface LED – LinkLink LED : Off – no link,Link LED : On – Link is up

6

Status LEDOff : System not bootedRed : System FailureYellow : System is booted to ROMmonGreen : System is booted to IOS

3

Micro-USB LEDLeft LED On indicates that USB console is active

7,8, and 9

Alarm LED : Minor, Major, Critical

4

Console RJ-45 LEDRight LED On indicates that RJ-45 console is active

—

C8500-20X6C

Product Comparison

Parameter

C8500-20X6C

C8500-12X4QC

C8500-12X

1/10GE ports

20

12

12

40GE ports

up to 6

2

0

40/100GE ports

up to 6 (QSFP)

2 (QSFP28)

0

SD-WAN IPsec (IMIX)

Up to 100 Gbps

Up to 31.9 Gbps

Up to 22.6 Gbps

SD-WAN IPsec (1400B)

Up to 350 Gbps

Up to 96 Gbps

Up to 51 Gbps

SD-WAN overlays

8000 (10000 note)

8000 (10000 note)

8000 (10000 note)

IPv4 forwarding (auto, 1400B)

Up to 500 Gbps

Up to 197 Gbps

Up to 118 Gbps

IPsec (auto, 1400B)

Up to 400 Gbps

Up to 135 Gbps

Up to 84 Gbps

DRAM (default / max)

16 / 64 GB

16 / 64 GB

16 / 64 GB

Storage (default / options)

16G eUSB; 32G eUSB; 2 TB NVMe

16G eUSB; 32G eUSB; 480G SSD

16G eUSB; 32G eUSB; 2 TB NVMe

Form factor / RU

3RU

1RU

1RU

Dimensions (H×W×D, in)

5.22×17.25×26.85

1.73×17.50×18.46

1.73×17.50×18.46

Weight (AC config)

75–77.5 lb

20.75 lb

20.25 lb

Minimum software

17.10.1

17.3.2

17.3.2

Specifications

Parameter Specification Parameter Specification
Model C8500-20X6C (Catalyst 8500 Edge Platform) Form factor 3RU; 5.22 × 17.25 × 26.85 in; 75–77.5 lb (AC)
Interfaces 20 × 1/10GE SFP+; 6 × 40/100GE QSFP Max simultaneous ports All interfaces (total 800 Gbps) can be enabled
Controller-mode SD-WAN IPsec (IMIX) Up to 100 Gbps Controller-mode IPsec (1400-byte) Up to 350 Gbps
SD-WAN overlay tunnels 8000 (up to 10000 per note) Autonomous IPv4 forwarding (1400B) Up to 500 Gbps
Autonomous IPsec (1400B) Up to 400 Gbps IPsec SVTI tunnels (auto) 4000
DRAM (default / max) 16 GB / 64 GB Bootflash (eUSB) 16G default; 32G option
SSD option M.2 NVMe up to 2 TB Redundancy High-efficiency dual PSUs; software redundancy (two IOS processes)
Security / trust Secure Boot, SUDI Minimum software Cisco IOS XE 17.10.1
Operating temperature 0 to 40°C (32 to 104°F) Humidity Operating 10–85% (non-condensing); storage 5–95%
Acoustics (typ./max.) 63.3 dBA / 79.3 dBA Notes Platform highlights include inline hardware-accelerated crypto (QFP)

Get More Information

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Quality Certifications

Customer Reviews

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(5 reviews)
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    Bruce Banner
    Posted on 20/07/2024
    Verified Buyer
    5.0

    Everything is verified. Serial numbers match. Genuine equipment.

    Natasha Romanoff
    Posted on 18/05/2024
    Verified Buyer
    5.0

    Discreet, efficient, and on time. A flawless transaction.

    Infrastructure Lead
    Posted on 12/03/2024
    Verified Buyer
    5.0

    High value shipment arrived safely. The pallet was wrapped securely. Professional handling.

    IT Director
    Posted on 08/01/2024
    Verified Buyer
    5.0

    Trustworthy supplier. We have ordered several high-end units and they always deliver.

    Procurement
    Posted on 05/11/2023
    Verified Buyer
    5.0

    Sales team was very helpful with the insurance paperwork for the freight.

Questions & Answers

  • Where does the C8500-20X6C fit in an architecture?

    It’s a high-end SD-WAN/core edge platform for large campuses or data-center WAN edges requiring dense 10G and higher-speed aggregation with advanced encryption and QoS.

  • How does C8500-20X6C compare to C8500-12X4QC?

    20X6C focuses on very high port density for 10G aggregation; 12X4QC adds fewer 10G plus higher-speed ports for uplink. Choose based on port mix and backbone design.

  • Is it suitable for dual-WAN and multi-cloud?

    Yes. You can terminate multiple transports (MPLS/Internet/5G), build overlays, and use app-aware routing to steer SaaS/IaaS traffic by SLA and business intent.

  • What about scale and performance licensing?

    Throughput and feature sets depend on software licensing. Size licenses to expected encrypted throughput, tunnels, and feature packs (SD-WAN/security).

  • What high-availability designs are common?

    Redundant chassis, dual power, dual uplinks to separate aggregation/core pairs, and stateful failover policies at the overlay level.

  • How do I secure the edge here?

    Enable IPsec with modern ciphers, use zone-based firewall/IPS where licensed, segment tenants with VRFs, and export telemetry for SOC monitoring.

  • Can it coexist with existing ISR/ASR estates?

    Yes. Use standards-based routing (BGP/OSPF), migrate sites gradually to SD-WAN, and keep interop with legacy hubs during transition.

  • What monitoring should I deploy?

    Leverage SD-WAN analytics, NetFlow/telemetry, and automated SLA probes; baseline before cutover and track post-migration KPIs.

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Resources Downloads

  • C8500-20X6C Datasheet

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