CISCO2851-DC Cisco 2851 DC Router w/ DC PWR, 2GE, 4HWIC, 3PVDM, 1NME-XD, 2AIM, IP BASE

Overview of CISCO2851-DC Integrated Services Router 

The CISCO2851-DC Integrated Services Router from Cisco is a highly reliable and scalable networking solution designed to support enterprise-grade routing, secure connectivity, and flexible expansion capabilities. Built for demanding business environments, this rack-mountable router delivers consistent performance with advanced networking technologies and robust hardware architecture. It is ideal for organizations seeking dependable infrastructure to manage data traffic efficiently while maintaining scalability for future growth.

General Information

• Brand: Cisco
• Series: 2800 Series
• Model: 2851
• Part Number: CISCO2851-DC

Technical Specifications

• Total Ports: 2
• USB Port: Yes
• Management Port: Yes
• Network (RJ-45) Ports: 2
• Total Expansion Slots: 11
• Expansion Slot Types:
• NME (Network Module Expansion)
• EVM (Enhanced Voice Module)
• PVDM (Packet Voice Digital Modem)
• AIM (Advanced Integration Module)
• Network Technology: 10/100/1000Base-T
• Ethernet Technology: Gigabit Ethernet

Hardware Dimensions

• Height: 3.5 inches
• Width: 17.3 inches
• Depth: 16.4 inches
• Rack Compatibility: 2U

Memory Specifications

• Standard Memory: 256 MB
• Maximum Memory Capacity: 1 GB
• Memory Type: DRAM (Dynamic Random Access Memory)
• Flash Memory: 64 MB

The CISCO2851-DC Cisco 2851 DC Power Router

The CISCO2851-DC Cisco 2851 Router with DC Power configuration represents a robust and scalable integrated services platform engineered for enterprise-grade networking environments that demand high reliability, flexibility, and consistent performance. Designed as part of the widely adopted Cisco 2800 Series Integrated Services Routers, this model combines advanced routing, security, voice, and application services into a single, modular platform. The inclusion of DC power support makes it particularly suitable for telecom infrastructures, industrial deployments, and environments where DC power systems are standard, ensuring uninterrupted network availability and compatibility with centralized power systems.

Reliability

One of the key benefits of the DC power feature in the Cisco 2851 Router is its reliability. DC power supplies are known for their stability and consistency, providing a steady flow of power to the router. This eliminates the risk of sudden power fluctuations or surges that could potentially damage the device or disrupt network operations. Additionally, DC power supplies are less susceptible to interference from external factors such as electromagnetic radiation or radio frequency signals. This ensures a more reliable and consistent power supply, minimizing downtime and maximizing network availability.

Efficiency

The DC power capability of the Cisco 2851 Router also offers increased energy efficiency. Compared to AC power supplies, DC power supplies are more efficient in converting electrical energy into usable power for the router. This results in lower energy consumption and reduced operating costs for users.

Furthermore, DC power supplies typically generate less heat compared to AC power supplies. This not only contributes to energy efficiency but also helps in maintaining optimal operating temperatures for the router. By reducing heat generation, the DC power feature enhances the overall longevity and reliability of the device.

Flexibility

The Cisco 2851 Router's DC power feature also provides users with greater flexibility in terms of deployment options. With support for DC power input, this router can be easily integrated into various network environments, including those where AC power sources may not be readily available or practical. This flexibility allows users to deploy the router in a wide range of scenarios, such as remote locations, outdoor setups, or mobile deployments. Whether it's a construction site, a temporary event, or a remote office, the Cisco 2851 Router's DC power capability ensures seamless connectivity and reliable performance.

Interfaces

The Cisco 2851 Router boasts a comprehensive set of interfaces, making it a versatile solution for various networking applications. With its 2 WAN interfaces, 4 LAN interfaces, 3 high-speed serial interfaces, 1 USB interface, and 2 integrated network module slots, this router offers extensive connectivity options to meet diverse user requirements.

WAN Connectivity

The 2 WAN interfaces of the Cisco 2851 Router provide users with flexible options for connecting to external networks or internet service providers (ISPs). These interfaces support various protocols such as Ethernet, T1/E1, and DSL, allowing users to choose the most suitable WAN connectivity method for their specific needs. Whether it's connecting to a high-speed fiber network, utilizing traditional T1 or E1 lines, or leveraging DSL connections, the Cisco 2851 Router's WAN interfaces offer seamless integration and reliable connectivity. This flexibility ensures that users can establish and maintain stable connections with external networks, enabling efficient data transfer and communication.

LAN Connectivity

The 4 LAN interfaces of the Cisco 2851 Router enable users to connect multiple devices within their local network. These interfaces support various Ethernet standards, including Fast Ethernet and Gigabit Ethernet, providing high-speed data transfer capabilities. With multiple LAN interfaces, users can easily connect computers, servers, printers, and other network devices to create a robust and efficient local area network (LAN). This facilitates seamless communication and data sharing within the organization, improving productivity and collaboration.

Advanced Networking Capabilities

In addition to basic LAN connectivity, the Cisco 2851 Router's LAN interfaces also offer advanced networking capabilities. These interfaces support features such as VLAN (Virtual Local Area Network) tagging and routing protocols like OSPF (Open Shortest Path First) and EIGRP (Enhanced Interior Gateway Routing Protocol). VLAN tagging allows users to segment their network into multiple virtual LANs, providing enhanced security and improved network management. Routing protocols enable efficient data routing and load balancing across the network, optimizing performance and ensuring reliable connectivity.

Advanced Integrated Services Router 

The Cisco 2851 platform is built on a resilient architecture that supports simultaneous services without compromising performance. The integration of routing, security, voice processing, and WAN connectivity enables organizations to consolidate network infrastructure and reduce operational complexity. With support for IP Base software, this router provides essential routing functions, including static and dynamic routing protocols, ensuring seamless data flow across distributed networks.

Performance Optimization and Processing Capabilities

The Cisco 2851 router is equipped with a high-performance processor designed to handle complex networking tasks efficiently. The system architecture ensures optimized packet forwarding, reduced latency, and consistent throughput even under heavy network loads. This capability is essential for organizations operating mission-critical applications that require real-time data transmission and minimal downtime.

Memory and Flash Configuration

The inclusion of 64MB Flash memory and 256MB DRAM provides sufficient storage and operational capacity for running IOS features, maintaining routing tables, and supporting various applications. This memory configuration ensures that the router can efficiently handle multiple services simultaneously while maintaining stability and performance.

DC Power Supply Advantages

The DC power variant of the Cisco 2851 router offers significant advantages in environments where DC power infrastructure is preferred or required. This includes telecommunications facilities, data centers, and industrial installations where DC systems provide improved reliability and simplified backup power integration.

Enhanced Power Reliability

DC power systems are known for their stability and reliability, particularly in critical environments. The CISCO2851-DC router benefits from this by ensuring consistent operation even during power fluctuations. This makes it an ideal choice for organizations that require uninterrupted network connectivity.

Interface and Expansion Capabilities

The CISCO2851-DC router is designed with a modular architecture that supports extensive customization through various interface and expansion options. This flexibility allows organizations to tailor the router to meet specific networking requirements.

Dual Gigabit Ethernet Ports

The presence of two Gigabit Ethernet ports ensures high-speed connectivity for LAN and WAN environments. These interfaces support fast data transfer rates, enabling efficient communication between network segments and supporting bandwidth-intensive applications.