Cisco isr 4321 router

Types of cisco ISR 4321 routers

The Cisco ISR 4321 router comes in one type, but it is available at various levels of ordered hardware and software licensing. The Cisco ISR 4321 router is part of the 4000 series of integrated services routers. The series has three other routers: 4100, 4200, and 4400. They have varying throughput capacities to meet different business needs.

The 4321 model offers a balance between performance and cost. It is ideal for branch offices or organizations that require secure, high-performance networking without the complexity and expense of larger models. Customers may choose the following license levels when purchasing the Cisco ISR 4321:

• Base License: The Base License includes essential routing and network services capabilities, including security features. It is a good starting point for organizations that need basic routing and security functions.
• APL (Additional Product License): APL is an add-on licensing scheme that allows organizations to consume additional software capabilities based on their unique voice, video, and collaboration needs. These products include Cisco Webex, Cisco Unified Computing, Cisco Collaboration Endpoint, Cisco IP Phones, and Cisco Spark. Organizations can add capabilities to their infrastructure with APL licensing tailored to their collaboration needs.
• Geographic Ordering (GO): GO is an ordering model designed to encourage businesses to invest in a distributed IT infrastructure. It allows organizations to order Cisco ISR routers and other Cisco products through a specific geographic channel that promotes distribution investments. The GO model supports moving networking devices to various locations for distribution, enhancing access to technology. The model is intended for geographic region-based ordering practices that facilitate developing infrastructure in multiple areas.

Function and feature

The Cisco ISR 4321 integrates a powerful 64-bit multicore CPU and ample memory, providing robust performance and a high degree of flexibility.

• Performance and Scalability

  With its multicore processor, the ISR 4321 can handle multiple tasks simultaneously, ensuring smooth operation even under heavy loads. It offers different memory options to accommodate various network demands, and the performance of Cisco routers can scale up by adding hardware or software resources. ISRs integrate router and server functions to provide secure and high-performing applications to any user. They offer fast and consistent application delivery with embedded computing resources and optimized networking. These routers use a consistent software platform across all ISR and ASR router lines, streamlining operations and ensuring reliable performance.

• Modular Design

  Cisco 4321 ISR modular design provides flexibility in adapting the router to meet changing network requirements. It has various built-in interfaces for connecting to different network types and a wide range of integration modules and slot network interface options. The router's modular design allows organizations to customize their networking solutions by adding or changing modules and interfaces. This approach enables businesses to efficiently adapt to evolving connectivity needs while maximizing investments in networking equipment.

• ISR 4321 Advanced Security

  Security is Cisco ISR 4321's top priority. The Cisco ISR 4321 router has integrated security features that help protect the sensitive data of users. Users can use strong identity controls to secure sensitive data. This ISR has encrypted VPN capabilities, ensuring safe data transfer between remote users and business networks. Its advanced threat prevention capabilities also help protect data from potential hackers who might try to steal or unlawfully use it. A built-in data loss prevention program helps prevent any unapproved data transfers.

Applications of cisco isr 4321 router

Applications for the ISR 4321 include connecting branch offices to the internet, integrating services at branch offices, and ensuring secure connectivity for branch-office workers.

• Connectivity to Branch Offices

  The ISR 4321 series routers enables enterprises to connect their branch offices to the internet or to the enterprise's wide area network (WAN). Organizations can use ISR 4321 series routers to build secure and reliable connections between their headquarters, data centers, and branch offices.

• Integrated Services

  Cisco's Integrated Services Routers (ISR) use a Cisco unified communications manager to combine multiple WAN and network services into a single platform. The ISR 4321 series routers allow organizations to integrate various services into a single router platform. Examples of these integrated services are, but not limited to, virtual private network (VPN) services, firewall protection, intrusion prevention, and content filtering. The router also offers unified communications facilities via voice, video and messaging.

• Security and Remote Workforce Connectivity

  Cisco 4321 routers secure user presence on the web. They provide a secure infrastructure needed for branch-office workers to connect to corporate networks. Features such as built-in security measures, VPN support, and support for identity and access management solutions help enterprises to implement effective security and access policies for their remote and branch-office workforce.

• Voice and Video Services

  Cisco routers are used to transmit voice and video traffic alongside regular data traffic. By integrating voice and video services into the ISR 4321, organizations can use a single device for their communication and connectivity needs. The ISR 4321 series routers can provide quality of service (QoS) measures to ensure that voice and video traffic is prioritized and delivered with the required level of performance and reliability.

• Branch Office Network Services

  Organizations can use Cisco ISR 4321 to deploy and manage several network services within their branch offices. These services include DHCP and DNS services, which provide client devices with IP addresses and translate domain names to IP addresses within the branch office.

• Wireless Connectivity

  Some ISR 4321 routers support wireless connectivity by integrating wireless WAN interfaces (such as 4G/LTE) or wireless LAN interfaces (such as Cisco Mobility Express). The wireless WAN interfaces provide a backup or primary internet connection for branch offices, and the wireless LAN interfaces provide Wi-Fi connectivity for clients and devices within the branch office.

• Application Performance Optimization

  The ISR 4321 has features such as Cisco's WAN optimization solutions, which help improve the performance of applications running in branch offices or being accessed from branch offices. These optimization solutions can enhance application responsiveness, reduce bandwidth usage, and improve the overall user experience for business-critical applications.

How to choose cisco isr 4321 router

Before purchasing the Cisco ISR 4321 router, it is crucial to consider some factors to find a model that suits specific needs and requirements. These are some of the factors to consider;

• Service providers: This is an essential factor to consider because; inter-Isis can only be connected if the user has services from more than one service provider. If the user has only one service provider, they will connect their router to that one service provider's network. The router will then be able to send requests to other networks, so all routers from other service providers are connected.
• Number of WAN ports: Another important factor to consider when purchasing is the number of WAN ports available. WAN ports on a router connect to wide area networks such as the internet, and the Cisco ISR 4321 model comes with three options, and WAN ports can be determined by the model. The ISR 4331 have 4, 2.5G Ethernet WAN ports. The ISR4351 has 2, 10G Ethernet WAN ports, while the ISR4221 has two 1G Ethernet WAN ports.
• Number of LAN ports: Just like WAN ports, the Cisco Integrated Services Router also has LAN ports to connect local network devices like computers and printers. The number of these ports depends on the model; the ISRs 4331, 4332, and 4332 come with 4, 1G Ethernet LAN ports, while the ISRs 4321 and 4321/K9 have 3, 1G Ethernet LAN ports.
• Concurrent sessions: When determining the number of concurrent sessions, consider what the organization is using the router for. The organization can expect approximately 50% of the maximum number of concurrent sessions to be in use at any given time. The ISR 4000 Series runs multiple software packages, contributing to maximum performance. Routers in the ISR 4000 Series can run in a virtual environment if hardware capabilities exist. All models support Secure Sockets Layer (SSL) VPNs, IPsec VPNs, and Internet Protocol (IP) route, so calculating VPN licenses is more complex.

Cisco ISR 4321 router Q&A

Q1: Does Cisco ISR 4321 support WiFi?

A1: To enable Wi-Fi functionality on the Cisco ISR 4321, customers must purchase a separate wireless LAN controller module and access points. The router does not have built-in Wi-Fi capabilities.

Q2: ISR 4321 router can it support fiber optic?

A2: Yes, the ISR 4321 router can support fiber optic connections. However, customers might need to purchase a separate fiber optic interface card or module, depending on the type of ports and interfaces they want to use to connect to the fiber optic cable.

Q3: Does ISR 4321 router support VPN?

A3: The Cisco ISR 4321 router does support virtual private networks (VPNs). VPN functionality is built into the router, allowing secure encrypted tunneling.

Q4: How many users can ISR 4321 Cisco router support?

A4: ISR 4321 can support up to 50 users by default without any license. However, by purchasing the right Cisco software license (geos-based), customers can increase the number of users to up to 2,000, which is the maximum capacity.