C1111-4PWB Cisco ISR 1100 Dual Router with 4 Ports

Cisco C1111-4PWB ISR 1100 Dual-Port Router

The Cisco C1111-4PWB ISR 1100 Series Router is a compact, high-performance integrated services router designed for modern branch networking, secure connectivity, and enterprise-grade WAN optimization. Developed this router combines advanced routing capabilities with built-in wireless and security features for small to medium-sized business environments.

Key Product Details

• Manufacturer: Cisco
• Part Number: C1111-4PWB
• Product Type: Integrated Services Router (ISR)

WAN Interface

• 1 x dedicated 10/100/1000 RJ-45 Gigabit Ethernet WAN port
• 1 x combo WAN port supporting 10/100/1000 RJ-45 or SFP fiber connectivity

WAN Deployment Flexibility

• Supports fiber and copper uplink options
• Ideal for hybrid WAN and multi-ISP environments

LAN Interface Architecture

Enterprise-Grade Local Networking

• 4 x managed 10/100/1000 Gigabit Ethernet LAN ports
• Optimized for high-speed internal traffic distribution

LAN Optimization Features

• Layer 2/Layer 3 switching capabilities
• VLAN segmentation support for secure network isolation

Integrated Wireless Capabilities

802.11ac Wave 2 Wi-Fi Technology

Built-in Wireless Performance

• Integrated dual-band 802.11ac Wave 2 wireless module
• 2x2 MIMO antenna configuration for improved signal strength
• Enhanced throughput for mobile and IoT devices

Wireless Deployment Advantages

• Eliminates need for external access points in small offices
• Supports seamless roaming and stable connectivity

Performance and Throughput Capabilities

Routing Efficiency

High-Speed Data Processing

• Forwarding throughput up to 1.37 Gbps (IPv4 IMIX)
• Optimized packet handling for enterprise workloads

Encrypted Traffic Performance

Secure VPN Acceleration

• Up to 150 Mbps encrypted throughput
• Hardware-accelerated VPN processing
• Supports secure remote branch connectivity

Fixed High-Reliability Memory

• 4 GB DRAM (non-expandable)
• 4 GB Flash storage (fixed)

Memory Optimization Benefits

• Stable performance for routing and security services
• Reliable OS and configuration storage

Power over Ethernet (PoE) Support

• Supports 2 PoE ports or 1 PoE+ port
• Requires optional 150W power supply for full PoE functionality

Deployment Advantages

• Power IP phones, access points, and IoT devices directly
• Reduces need for separate power adapters

Management and Connectivity Interfaces

• 1 x Micro-USB console port for configuration access
• 1 x USB 3.0 Type-A port for external storage and upgrades

Operational Efficiency Tools

• Fast firmware updates via USB storage
• Secure local configuration access

Dimensions and Build

• Height: 1.75 inches
• Width: 12.7 inches
• Depth: 9.03 inches
• Weight: Up to 5.5 lbs (2.5 kg)

Thermal and Acoustic Efficiency

Silent Operation Design

• Fanless cooling architecture
• Ideal for office and retail environments

Operating Conditions

• Designed for stable performance across standard ambient temperatures
• Optimized for branch office deployments

Software and Security Features

• Runs Cisco IOS XE software
• Modular and scalable OS architecture

SD-WAN Integration

Cloud-Managed Networking

• Fully compatible with Cisco SD-WAN solutions
• Automated traffic routing and optimization

Security Enhancements

Enterprise-Grade Protection

• Hardware-accelerated VPN encryption
• Zone-Based Firewall (ZBFW)
• Cisco Umbrella cloud security integration

Threat Defense Capabilities

• Real-time DNS-layer protection
• Advanced malware and phishing defense
• Secure branch-to-cloud connectivity

Cisco C1111-4PWB ISR 1100 Dual Router Ports Overview 

The Cisco C1111-4PWB ISR 1100 Dual Router Ports solution is engineered for modern enterprise branch environments that demand high performance, secure connectivity, and scalable WAN integration. As part of the advanced Cisco Integrated Services Router (ISR) 1100 series developed this platform is designed to meet the evolving needs of distributed organizations, cloud-first networking architectures, and secure hybrid connectivity models.

This router architecture emphasizes flexibility, embedded security, and modular WAN expansion capabilities. The Cisco C1111-4PWB variant is particularly suited for small to medium enterprise branch deployments that require resilient dual-port routing capabilities combined with integrated services such as VPN, firewalling, application optimization, and cloud connectivity support.

Enterprise-Class Architecture of Cisco ISR 1100 Series Platforms

High-Performance Embedded Services Router Design

The ISR 1100 series introduces a compact yet powerful architecture that integrates routing, security, and application services into a unified platform. The Cisco C1111-4PWB Dual Router Ports model continues this tradition by offering optimized hardware acceleration for IP services, ensuring consistent throughput even under heavy traffic conditions.

Multi-Core Processing Capabilities

The system is built around multi-core CPU technology that enhances packet processing efficiency and reduces latency across WAN and LAN interfaces. This allows the router to handle concurrent services such as encryption, deep packet inspection, and traffic shaping without compromising performance.

Hardware-Assisted Security Acceleration

Security functions are accelerated at the hardware level, enabling encrypted VPN tunnels and secure socket layer operations to be executed efficiently. This improves both throughput and reliability in enterprise network environments where secure communication is a priority.

Compact Form Factor with Enterprise Scalability

Despite its compact chassis design, the Cisco C1111-4PWB ISR 1100 platform is engineered for scalability. It allows organizations to deploy enterprise-grade networking capabilities in space-constrained environments such as branch offices, retail locations, and remote sites.

Optimized Space Utilization

The router’s physical design minimizes rack space requirements while maintaining high-density port availability. This makes it suitable for edge deployments where infrastructure footprint is limited but performance expectations remain high.

Flexible Deployment Options

The hardware supports multiple deployment modes, including standalone branch routing, SD-WAN integration, and hybrid cloud connectivity models. This flexibility ensures that the device can adapt to evolving enterprise network architectures.

Dual Router Ports and WAN Connectivity Features

Redundant WAN Path Architecture

The Cisco C1111-4PWB Dual Router Ports configuration is designed to provide resilient WAN connectivity through redundant paths. This ensures uninterrupted communication between branch networks and central data centers or cloud platforms.

Primary and Secondary Link Configuration

The dual-port structure enables the configuration of primary and backup WAN links, allowing automatic failover in case of service degradation or link failure. This enhances network uptime and ensures business continuity.

Load Balancing Capabilities

Traffic distribution across multiple WAN connections helps optimize bandwidth usage and improve application performance. Intelligent routing mechanisms distribute workloads based on real-time network conditions.

Multi-Interface Support for Diverse Network Environments

The router supports a variety of interface types, enabling seamless integration into heterogeneous network infrastructures. This includes Ethernet-based WAN connections and broadband access technologies commonly used in branch environments.

Ethernet WAN Integration

Ethernet WAN support allows direct connectivity to service provider networks, simplifying deployment and reducing dependency on legacy infrastructure.

Broadband and Internet Link Support

The device can also integrate with broadband internet services, making it suitable for cost-effective branch deployments while still maintaining enterprise-grade performance and security standards.

Integrated Security Framework in Cisco C1111-4PWB ISR 1100

Advanced Threat Protection Mechanisms

Security is a core component of the Cisco ISR 1100 series. The C1111-4PWB model incorporates multiple layers of protection to defend against modern cyber threats targeting enterprise branch networks.

Stateful Firewall Capabilities

The integrated firewall system provides deep packet inspection and state tracking to monitor network traffic and prevent unauthorized access attempts. This ensures that only legitimate traffic is permitted through the network boundary.

Intrusion Prevention Integration

Intrusion prevention technologies help detect and mitigate malicious activity in real time. This reduces the risk of data breaches and network compromise at the edge.

Secure VPN Connectivity for Branch Offices

The router supports secure VPN tunnels that enable encrypted communication between distributed enterprise locations. This ensures data confidentiality and integrity across public networks.

Site-to-Site VPN Deployment

Organizations can establish secure site-to-site VPN connections between branch offices and headquarters, creating a unified and protected enterprise network infrastructure.

Remote Access Security

Remote users can securely connect to corporate resources using encrypted access mechanisms, enabling flexible workforce models without compromising security standards.

Cloud Integration and SD-WAN Optimization

Cloud-Ready Networking Architecture

The Cisco C1111-4PWB ISR 1100 router is optimized for cloud-first environments, enabling seamless integration with public and private cloud services. This ensures efficient data flow between branch networks and cloud applications.

Direct Cloud Connectivity

The platform supports direct routing to cloud service providers, reducing latency and improving application performance for SaaS-based workloads.

Hybrid Cloud Support

Hybrid cloud deployments benefit from flexible routing policies that allow workloads to be distributed across on-premises and cloud environments efficiently.

SD-WAN Capabilities for Intelligent Traffic Management

Software-defined WAN capabilities enhance network agility by dynamically managing traffic based on application requirements and network conditions.

Application-Aware Routing

The system identifies application traffic types and routes them over optimal paths to ensure consistent performance for mission-critical applications.

Centralized Policy Management

Network administrators can define and enforce routing policies from centralized management platforms, reducing operational complexity and improving consistency across distributed environments.

Performance Optimization and Traffic Handling

High Throughput Processing Engine

The Cisco C1111-4PWB ISR 1100 router is engineered to maintain high throughput performance even when multiple services are active simultaneously. This ensures efficient handling of voice, video, and data traffic in enterprise branch environments.

Quality of Service Implementation

Quality of Service mechanisms prioritize critical application traffic to ensure stable performance for real-time services such as VoIP and video conferencing.

Traffic Shaping and Bandwidth Control

Administrators can control bandwidth allocation across different applications and user groups to optimize network utilization and prevent congestion.

Low Latency Network Operations

Latency optimization techniques are embedded within the routing architecture to ensure fast response times for business-critical applications.

Efficient Packet Forwarding

The router minimizes packet processing delays through optimized forwarding engines and hardware acceleration capabilities.

Reduced Jitter for Real-Time Applications

Voice and video services benefit from reduced jitter, ensuring smooth communication experiences across distributed teams.