ISR4321-SEC/K9 Cisco 2 Ports Ethernet Router Rack Mountable Refurbished

Product Overview for the Cisco ISR4321-SEC/K9 2 Ports Ethernet Router

The ISR4321-SEC/K9 Cisco 2 Ports Ethernet Router Rack Mountable is a versatile and secure networking solution designed to meet the demands of modern businesses. In this detailed guide, we will delve into the key features, specifications, benefits, and applications of this router, providing you with a comprehensive understanding of its capabilities.

• High Performance: The ISR4321-SEC/K9 router is known for its exceptional performance, making it suitable for a wide range of networking tasks. With advanced processing capabilities, it can handle data-intensive applications and ensure smooth data transmission.
• Security Features: Security is paramount in today's digital landscape, and the ISR4321-SEC/K9 doesn't disappoint. Equipped with robust security features, including firewall capabilities and VPN support, this router ensures the confidentiality and integrity of your data.
• Dual Ethernet Ports: The router boasts two Ethernet ports, providing flexibility in network configuration. This dual-port setup allows for efficient traffic management and enhances overall network performance.
• Rack Mountable Design: Designed with practicality in mind, the ISR4321-SEC/K9 comes in a rack-mountable form factor. This space-saving design is ideal for data centers and server rooms, allowing for easy integration into existing network setups.

• Scalability: The ISR4321-SEC/K9 router is designed with scalability in mind, allowing businesses to expand their network infrastructure as needed. This ensures that the router can grow alongside the evolving requirements of the organization.
• Reliability: Cisco is synonymous with reliability, and the ISR4321-SEC/K9 is no exception. Its robust design and quality components make it a dependable choice for mission-critical networking tasks.
• Cost-Effectiveness: While offering advanced features, this router is also cost-effective, providing businesses with a high-value solution for their networking needs. The scalability and reliability contribute to a lower total cost of ownership over the long term.
• Ease of Management: Cisco routers are renowned for their user-friendly interfaces and management tools. The ISR4321-SEC/K9 is no different, offering an intuitive platform for network administrators to configure and monitor the router efficiently.

• Enterprise Networking: The ISR4321-SEC/K9 is well-suited for enterprise-level networking, where performance, security, and scalability are critical. It can handle the demands of large organizations with multiple users and diverse networking requirements.
• Data Centers: The rack-mountable design makes this router an excellent choice for data centers. Its compact form factor allows for efficient space utilization in server racks, facilitating the organization and management of networking equipment.
• Branch Offices: With its dual Ethernet ports and security features, the ISR4321-SEC/K9 is an ideal solution for branch office networking. It can securely connect remote offices to the main network while ensuring the integrity of data transmission.
• Telecommuting: In the era of remote work, the ISR4321-SEC/K9 supports secure connections, making it suitable for telecommuting scenarios. Its VPN capabilities enable employees to access the corporate network securely from various locations.

The ISR4321-SEC/K9 Cisco ISR 4321 Security Router is a high-performance, feature-rich router that is designed for small to medium-sized businesses and enterprise branch offices. To maximize the performance and scalability of this router, several steps can be taken.

• Use the latest IOS-XE software version: This will ensure that you have access to the latest features and security updates that can improve the performance of the router.
• Utilize the proper license: The ISR4321-SEC/K9 router comes with a base license, but additional licenses may be required for certain features such as VPN or security. It's important to have the right license for the required feature set.
• Optimize the network design: Reducing unnecessary routing and traffic can help improve the performance of the router. This can be achieved by properly segmenting the network and implementing VLANs.
• Ensure adequate memory and CPU resources: The router should have enough memory and CPU resources to handle the traffic load. This can be checked by monitoring the router's CPU and memory usage.
• Utilize Quality of Service (QoS): Prioritizing mission-critical traffic using QoS can help ensure that the router can handle high-bandwidth applications such as video conferencing or VoIP.
• Configure the router to use multiple processors: The ISR4321-SEC/K9 router has multiple processors and this can be configured to improve performance.
• Utilize security features: Firewalls, VPNs, and intrusion prevention can help protect the network and reduce the load on the router.
• Use Cisco Performance Routing (PfR): This feature can optimize traffic flow based on real-time performance metrics, which can help improve the overall performance of the router.
• Monitor the router's performance: Using SNMP and Cisco IOS Embedded Event Manager (EEM) can help identify and troubleshoot any performance issues.
• Implement High-Availability (HA): The ISR4321-SEC/K9 router has a built-in HA feature that can help ensure continuous uptime and reduce maintenance downtime.

By following these steps, you can maximize the performance and scalability of the ISR4321-SEC/K9 Cisco ISR 4321 Security Router and ensure that it can handle the needs of your network.

The ISR4321-SEC/K9 Cisco ISR 4321 Security Router can be configured and managed in several ways.

• Command Line Interface (CLI): The router can be configured and managed using the CLI through a console or remote connection. This is the most common method used by network administrators.
• Cisco Configuration Professional (CCP): This is a graphical user interface (GUI) that can be used to configure and manage the router. It provides an easy-to-use interface for common tasks such as configuring interfaces, security, and Quality of Service (QoS).
• Cisco Network Assistant (CNA): CNA is a GUI-based management tool that allows you to manage multiple Cisco devices from a single interface. It provides a simplified way to configure and manage the ISR4321-SEC/K9 router and other Cisco devices on your network.
• Cisco Prime: Cisco Prime is a network management system that provides a comprehensive view of your network and allows you to configure, monitor, and troubleshoot devices.
• Cisco DNA Center: Cisco DNA Center is a network management platform that provides automation, assurance, and analytics capabilities. It allows you to manage your network devices, including the ISR4321-SEC/K9 router, from a single interface.
• REST API: The ISR4321-SEC/K9 router supports REST API and can be managed programmatically. This allows you to use Python or other scripting languages to automate tasks and integrate the router into your IT infrastructure.
• SNMP: The router can be configured and managed using SNMP. This allows you to monitor and troubleshoot the router's performance and status using SNMP management software.
• Embedded Event Manager (EEM): EEM allows you to automate tasks, troubleshoot issues, and respond to events on the router. It can be used to monitor and respond to events on the router, such as interface status changes or high CPU usage.

All of these methods can be used to configure and manage the ISR4321-SEC/K9 Cisco ISR 4321 Security Router, depending on your needs and preferences.

Quality of Service (QoS) Capabilities

The ISR4321-SEC/K9 Cisco ISR 4321 Security Router supports Quality of Service (QoS) capabilities that allow you to prioritize and manage network traffic to ensure that mission-critical applications receive the necessary bandwidth. Some of the QoS capabilities of the ISR4321-SEC/K9 router include:

• Class-Based Weighted Fair Queuing (CBWFQ): This is a queuing mechanism that allows you to assign different priority levels to different types of traffic, such as voice, video, and data.
• Low Latency Queuing (LLQ): LLQ is a priority queuing mechanism that is used to minimize delay for time-sensitive traffic such as voice and video.
• Weighted Random Early Detection (WRED): WRED is used to prevent network congestion by randomly dropping packets when the queue reaches a certain threshold. This helps to ensure that high-priority traffic is not impacted by lower-priority traffic.
• Quality of Service (QoS) policies: The ISR4321-SEC/K9 router supports the use of QoS policies, which allow you to define a set of rules for managing and prioritizing traffic.
• Differentiated Services Code Point (DSCP) and IP Precedence: DSCP and IP Precedence are used to mark packets with a priority level, which allows the router to prioritize the traffic.
• Link Efficiency Mechanism (LEM): LEM is used to improve link efficiency by compressing the traffic and reducing the amount of data that needs to be transmitted over the network.
• Traffic policing and shaping: The router also supports traffic policing and shaping, which allows you to limit the amount of bandwidth that a particular type of traffic can consume.
• FlexVPN: FlexVPN is a VPN solution that can be used to provide secure and reliable connectivity for remote users and branch offices.

• Manufacturer: Cisco
• Model Number or SKU# ISR4321-SEC/K9
• Product Series: 4000
• Product Type: Router

• Total Number of Ports: 2
• USB: Yes
• Powerline: No
• Management Port: Yes
• Serial V.35 Interface: No
• Number of Network (RJ-45) Ports: 2

• Number of Total Expansion Slots: 4
• Expansion Slot Type: SFP
• Expansion Slot Type: Smart Interface Card (SIC)
• Expansion Slot Type: Network Interface Module (NIM)

• Network Technology: 10/100/1000Base-T
• Ethernet Technology: Gigabit Ethernet

Security Features:

• ACL (Access Control List)
• RADIUS (Remote Authentication Dial-In User Service)
• AAA (Authentication, Authorization, and Accounting)
• IPsec (Internet Protocol Security)
• DMVPN (Dynamic Multipoint Virtual Private Network)

• Standard Memory: 4 GB
• Maximum Memory: 8 GB
• Memory Technology: DDR3 SDRAM
• Flash Memory: 4 GB

Power Description

• Input Voltage: 120 V AC
• Input Voltage: 230 V AC
• Power Source: Power Supply
• Power Source: PoE (Power over Ethernet)
• Redundant Power Supply: No

Finally, the ISR4321-SEC/K9 Cisco 2 Ports Ethernet Router Rack Mountable is a powerful networking solution that combines high performance, security, and scalability. Its dual Ethernet ports, rack-mountable design, and advanced features make it suitable for a variety of applications, from enterprise networking to branch offices and telecommuting setups. As businesses continue to evolve, having a reliable and versatile router like the ISR4321-SEC/K9 is essential for building a robust and secure network infrastructure.