VS-S720-10G-3CXL Cisco 2 Ports Supervisor Engine 10 Gigabit Fast Ethernet

Cisco VS-S720-10G-3CXL 10 Gigabit Ethernet Control Processor

The Cisco VS-S720-10G-3CXL Virtual Switching Supervisor Engine is a high-performance control processor engineered for Cisco Catalyst 6500 Series and Cisco 7600 Series platforms. Designed to deliver enterprise-class Layer 2 and Layer 3 networking, this supervisor engine provides exceptional routing, switching, security, and scalability for demanding campus and data center environments. Equipped with integrated 10 Gigabit Ethernet connectivity, it helps organizations maintain reliable network performance while supporting advanced applications and mission-critical workloads.

Product Highlights

• Manufacturer: Cisco
• Model: VS-S720-10G-3CXL
• Product Category: Virtual Switching Supervisor Engine
• Device Type: Control Processor
• Network Technology: 10 Gigabit Ethernet
• Form Factor: Plug-in Module
• Ideal for Cisco Catalyst 6500 and Cisco 7600 Series switches

Powerful Network Processing Performance

Enterprise-Class Routing and Switching

The Cisco VS-S720-10G-3CXL is built to support large-scale enterprise infrastructures with advanced routing intelligence and high-speed packet forwarding. It efficiently manages complex network traffic while maintaining excellent stability and performance.

• IPv4 Routing Performance: Up to 450 Mbps
• IPv6 Routing Performance: Up to 225 Mbps
• Supports Ethernet switching architecture
• Optimized for high-bandwidth network environments

High Capacity Architecture

Designed for growing enterprise networks, this supervisor engine delivers substantial forwarding capacity and routing resources to accommodate increasing traffic demands.

• Supports up to 96,000 MAC addresses
• Handles up to 1,000,000 IPv4 routes
• Supports up to 500,000 IPv6 routes
• Stores up to 256,000 NetFlow entries

Memory and Hardware Specifications

Integrated Processing Resources

• Installed Memory: 2 GB RAM
• Flash Storage: 1 GB Flash Memory
• No Internal Hard Drive
• Compact and durable plug-in module design

Physical Dimensions

• Width: 37.9 cm
• Depth: 40.3 cm
• Height: 4 cm
• Weight: 11 lbs

Advanced Networking Features

Comprehensive Routing Protocol Support

The Cisco VS-S720-10G-3CXL supports a broad range of dynamic routing protocols, making it suitable for enterprise, campus, and service provider deployments.

• OSPF
• RIP
• BGP-4
• IS-IS
• HSRP
• VRRP
• IGMP
• PIM Sparse Mode
• PIM Dense Mode
• Bidirectional PIM
• GRE Tunneling

Enterprise Security and Traffic Management

Improve network protection and application performance with integrated security and traffic optimization technologies.

• Access Control List (ACL) support
• Quality of Service (QoS)
• IPv6 networking support
• NAT functionality
• MPLS support
• MPLS VPN capability
• IGMP Snooping

Connectivity Options

Integrated Network Interfaces

• 1 × 10/100/1000Base-T RJ-45 Ethernet port
• 1 × RJ-45 Console Management Port
• 1 × USB Type-A Port
• 1 × USB Type-B Port

Expansion Capabilities

The supervisor engine provides flexible expansion options for high-speed fiber connectivity and future network upgrades.

• 2 available SFP Mini-GBIC slots
• 2 available X2 transceiver slots
• CompactFlash Type II expansion slot
• Compatible with one expansion slot in supported chassis

Status Monitoring Features

Built-In LED Indicators

• Power Status
• Port Activity
• System Status
• Link Status
• Operational Health
• Active Supervisor Indicator

Industry Standards Compliance

IEEE and Regulatory Certifications

The Cisco VS-S720-10G-3CXL complies with numerous international networking, safety, and electromagnetic standards to ensure dependable enterprise deployment.

• IEEE 802.1X
• FCC Class A
• CISPR 22 Class A
• CISPR 24
• UL 60950
• IEC 60950
• CSA 22.2 No. 60950
• EN 60950
• EN55022 Class A
• EN55024
• EN 61000-3-2
• EN 61000-3-3
• EN 61000-6-1
• EN300-386
• VCCI Class A
• ICES-003 Class A
• AS/NZS 3548 Class A
• FCC CFR47 Part 15

Environmental Specifications

Operating Conditions

• Operating Temperature: 0°C to 40°C
• Operating Humidity: 10% to 90% (Non-condensing)

Compatible Cisco Platforms

Cisco Catalyst 6500 Series Compatibility

The Cisco VS-S720-10G-3CXL is compatible with a wide range of Cisco Catalyst 6500 Series chassis, including:

• Catalyst 6503 and 6503-E
• Catalyst 6504-E
• Catalyst 6506 and 6506-E
• Catalyst 6509 and 6509-E
• Catalyst 6509-NEB
• Catalyst 6513
• Firewall Security System Bundles
• VPN System Bundles
• ACE Application Control Engine Bundles
• WiSM Bundles
• Supervisor Engine 32 configurations
• Supervisor Engine 720-3BXL configurations

Cisco 7600 Series Compatibility

This supervisor engine is also designed for multiple Cisco 7600 Series routers and security bundles.

• Cisco 7603
• Cisco 7603-S
• Cisco 7606
• Cisco 7606-S
• Cisco 7609
• Cisco 7609-S
• Cisco 7613
• 7600 Security Bundle models
• OSR-7609 platforms

Cisco VS-S720-10G-3CXL Virtual Switching Supervisor Engine

The Cisco VS-S720-10G-3CXL Virtual Switching Supervisor Engine represents a high-performance network control and management module designed for large-scale enterprise switching environments, service provider backbones, and mission-critical data center infrastructures. Built for compatibility with Cisco Catalyst 6500 Series and Cisco 7600 Series modular switches, this supervisor engine delivers advanced Layer 2 and Layer 3 switching intelligence, high availability, and robust scalability through integrated virtualization and high-speed fabric connectivity. As part of the Cisco Supervisor Engine 720 family, it enhances switching performance by integrating powerful forwarding capabilities, intelligent traffic control, and 10 Gigabit Ethernet uplink support via Mini GBIC (Small Form-Factor Pluggable SFP) interfaces.

The category of Cisco VS-S720-10G-3CXL is widely recognized in enterprise networking due to its role as a core switching controller that governs the entire chassis operation. It is not just a line card or uplink module; it acts as the brain of the modular switch, handling route processing, switching logic, policy enforcement, and system management. This makes it essential for organizations requiring high bandwidth aggregation, redundant architecture, and uninterrupted service availability.

Core Architecture of Cisco Supervisor Engine 720 Series

Distributed Switching Architecture

The Cisco VS-S720-10G-3CXL operates on a distributed forwarding architecture where the supervisor engine manages control plane functions while line cards handle data plane forwarding. This separation allows for optimized performance and reduced latency in packet processing. The architecture ensures that traffic forwarding continues even under heavy load conditions by distributing switching intelligence across hardware components.

High-Speed Switching Fabric Integration

At the heart of this supervisor engine is Cisco’s high-speed switching fabric, designed to support multi-gigabit throughput across all installed modules. The switching fabric enables simultaneous processing of multiple traffic streams, ensuring minimal congestion and high reliability. This is particularly important for environments where 10 Gigabit Ethernet uplinks are used to aggregate large-scale data flows.

Fabric Bandwidth Capabilities

The switching fabric integrated into the VS-S720-10G-3CXL supports scalable bandwidth allocation, allowing seamless communication between line cards. The fabric design ensures non-blocking performance for most enterprise workloads, making it suitable for data centers, campus cores, and service provider aggregation layers.

Supervisor Engine Role in Network Control

As a supervisor engine, the Cisco VS-S720-10G-3CXL manages routing protocols, spanning tree computation, quality of service (QoS) policies, and security enforcement. It also handles device configuration synchronization, system diagnostics, and redundancy coordination. Its centralized intelligence ensures that network policies are uniformly applied across all connected modules.

10 Gigabit Ethernet Mini GBIC (SFP) Connectivity

High-Speed Uplink Support

One of the defining characteristics of the Cisco VS-S720-10G-3CXL is its support for 10 Gigabit Ethernet uplinks via Mini GBIC (SFP+) interfaces. These ports enable high-speed connections between core switches, distribution layers, and data center aggregation switches. The flexibility of SFP-based design allows network engineers to choose from a wide range of optical and copper transceivers depending on deployment requirements.

Modular Optical Transceiver Flexibility

The Mini GBIC (SFP) design provides modularity in selecting fiber types, transmission distances, and connector standards. This enables organizations to scale their network infrastructure without replacing the supervisor engine itself. Whether using short-range multimode fiber or long-range single-mode fiber, the VS-S720-10G-3CXL accommodates diverse networking scenarios.

Supported Transceiver Types

Common transceiver options include SR (short range), LR (long range), ER (extended range), and copper-based 10GBase-T modules. Each of these plays a specific role in network architecture design, allowing flexible integration across enterprise campuses and data centers.

Operational Advantages of SFP-Based Design

The SFP-based architecture reduces hardware lock-in and simplifies upgrades. Instead of replacing entire switching systems, administrators can upgrade only the optical modules, improving cost efficiency and lifecycle management of network infrastructure.

Performance Capabilities and Throughput Optimization

High Availability Packet Processing

The Cisco VS-S720-10G-3CXL is engineered to deliver consistent packet forwarding performance even under peak traffic loads. It leverages hardware-based forwarding engines that minimize CPU dependency, ensuring that data flows are processed at line rate. This capability is crucial in environments where latency-sensitive applications such as VoIP, financial transactions, and cloud services operate.

Layer 2 and Layer 3 Switching Performance

The supervisor engine supports both Layer 2 switching and Layer 3 routing at scale. It efficiently processes VLAN segmentation, inter-VLAN routing, IP forwarding, and multicast traffic distribution. This dual capability makes it suitable for converged network environments where switching and routing functions are integrated within a single chassis system.

Quality of Service (QoS) Optimization

QoS mechanisms within the VS-S720-10G-3CXL allow prioritization of critical network traffic. Voice, video, and mission-critical data packets are assigned higher priority queues, ensuring smooth delivery even during congestion periods. This is essential for enterprise communication systems and real-time applications.

Virtual Switching System (VSS) Integration

Network Virtualization Capabilities

The Cisco VS-S720-10G-3CXL supports Virtual Switching System (VSS) technology, enabling two physical switches to operate as a single logical switch. This reduces network complexity and improves redundancy by eliminating traditional spanning-tree limitations.

Active-Active Redundancy Model

Through VSS, both supervisor engines can operate in an active-active configuration, balancing traffic loads while maintaining failover protection. This significantly enhances network uptime and ensures uninterrupted service delivery.

Stateful Failover Mechanism

Stateful failover ensures that session information is preserved during a supervisor failure. This prevents disruption in active network sessions, making it ideal for enterprise applications requiring continuous connectivity.

Compatibility with Cisco Catalyst and Cisco 7600 Series

Chassis Integration Flexibility

The Cisco VS-S720-10G-3CXL is designed for seamless integration into Cisco Catalyst 6500 Series and Cisco 7600 Series chassis. Its compatibility ensures that enterprises can upgrade existing infrastructure without complete system replacement. This modular design strategy reduces capital expenditure while enhancing network capabilities.

Backward and Forward Compatibility

Cisco engineered the Supervisor Engine 720 series to maintain compatibility across multiple hardware generations. This ensures that organizations can continue using legacy line cards while gradually upgrading to higher-speed interfaces such as 10 Gigabit Ethernet modules.

Operational Scalability in Enterprise Networks

Scalability is a key advantage of this supervisor engine. It supports increasing traffic demands through modular expansion, making it suitable for growing enterprises and service providers expanding their infrastructure footprint.

Enterprise Use Cases and Deployment Scenarios

Core Campus Network Deployment

In enterprise campus environments, the Cisco VS-S720-10G-3CXL functions as the central switching brain, connecting multiple distribution and access layers. It ensures high-speed connectivity across departments, buildings, and remote campuses.

Data Center Aggregation Layer

Within data centers, this supervisor engine is commonly deployed in aggregation layers where multiple server racks and storage systems converge. Its high throughput capabilities ensure efficient handling of east-west traffic between virtualized servers.

Cloud Infrastructure Integration

Modern cloud architectures benefit from the VS-S720-10G-3CXL due to its ability to handle virtualized workloads, dynamic routing updates, and high-speed uplink aggregation. It supports hybrid cloud environments by ensuring seamless connectivity between on-premises infrastructure and cloud platforms.

Service Provider Backbone Networks

Service providers utilize this supervisor engine in metro Ethernet and backbone networks where large volumes of traffic must be routed efficiently. Its redundancy features and high availability design make it suitable for carrier-grade deployments.

Security and Network Policy Enforcement

Access Control and Traffic Filtering

The Cisco VS-S720-10G-3CXL supports advanced access control lists (ACLs) that allow administrators to define granular traffic filtering rules. These rules help secure the network from unauthorized access and malicious traffic.

Integrated Security Features

Security features include port security, DHCP snooping, dynamic ARP inspection, and control plane policing. These features protect the supervisor engine and overall switching infrastructure from common network attacks.

Policy-Based Routing and Enforcement

Policy-based routing allows traffic to be directed based on defined business rules rather than static routing tables. This enhances network flexibility and supports advanced traffic engineering strategies.

System Redundancy and High Availability Design

Dual Supervisor Configurations

The VS-S720-10G-3CXL supports redundant supervisor configurations, enabling failover in case of hardware failure. This ensures continuous network operation without service interruptions.

Hot Standby Synchronization

Hot standby mechanisms keep the secondary supervisor synchronized with the primary unit in real time. This ensures immediate takeover capability during failures, reducing downtime significantly.

Network Resilience Strategies

Network resilience is enhanced through redundant power supplies, redundant fans, and distributed forwarding architectures. These components collectively improve system stability under varying load conditions.