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In the world of computer networks, upgrading from old to new technology is like getting a shiny new tool to make things better. Imagine you have an old, reliable car, but it's starting to show it's age. You hear about a newer model that's faster, safer, and more efficient. Cisco is a well-known company that offers efficient networking devices. That's what it's like when considering moving from Cisco Nexus 7000 to Nexus 9000 switches. This article is all about helping you understand why this upgrade might be a good idea. We'll explore what makes these newer switches different, why they're better, and how you can smoothly make the switch without causing chaos in your network. So, buckle up as we embark on this journey from the old to the new in the world of networking!
Cisco Catalyst and Cisco Nexus are two prominent product lines within Cisco's networking portfolio, each catering to distinct use cases and requirements.
Primarily designed for campus and branch networks, Cisco Catalyst switches offer high performance, reliability, and scalability for traditional Ethernet-based deployments. They are well-suited for environments where simplicity, ease of management, and cost efficiency are paramount.
On the other hand, Cisco Nexus switches are tailored for data center and cloud environments, delivering advanced features such as high-density 10/25/40/100 Gigabit Ethernet connectivity, low-latency switching, and support for virtualization and software-defined networking (SDN) technologies. They are optimized for demanding workloads and critical applications that require exceptional performance, flexibility, and scalability.
The Cisco Nexus 7000 series switches represent a robust and scalable solution for data center networking. Known for their reliability and performance, Nexus 7000 switches offer high-density 10 Gigabit Ethernet and 40 Gigabit Ethernet ports, along with features such as Virtual Device Context (VDC) support and FabricPath technology for improved scalability and flexibility.
Building upon the success of its predecessor, the Cisco Nexus 9000 series switches introduce innovations in networking technology, including support for Cisco's Application Centric Infrastructure (ACI) and programmable ASICs for enhanced automation and agility. With features such as VXLAN encapsulation, network virtualization, and seamless integration with cloud platforms, Nexus 9000 switches empower organizations to build scalable and resilient data center networks that adapt to evolving business needs.
With the rapid evolution of networking technology, newer hardware often offers improved performance, enhanced features, and better support for modern applications and workloads.
As hardware reaches its end-of-life (EOL) and end-of-support (EOS) stages, enterprises face risks associated with security vulnerabilities, a lack of updates, and diminishing compatibility with newer software.
Table 1 lists some key features of the Nexus 7000 switches below:
Feature |
Description |
High-Density Ports |
Nexus 7000 switches offer high-density 10 Gigabit Ethernet and 40 Gigabit Ethernet ports, providing ample connectivity for data center environments. |
Virtual Device Context (VDC) |
VDC allows the segmentation of a single physical Nexus 7000 switch into multiple logical devices, enabling isolation and resource allocation for different applications or tenants. |
FabricPath Technology |
FabricPath is a scalable and resilient Layer 2 multipath Ethernet technology, designed to provide increased scalability, flexibility, and operational simplicity in data center networks. |
Data Center Interconnect (DCI) |
Nexus 7000 switches support DCI solutions, enabling seamless connectivity and workload mobility between data centers for disaster recovery, load balancing, and business continuity. |
High Availability |
Nexus 7000 switches feature redundant components, including power supplies, fans, and supervisor modules, to ensure high availability and minimize downtime in mission-critical environments. |
Advanced Security Features |
With features such as access control lists (ACLs), Virtual Routing and Forwarding (VRF), and port security, Nexus 7000 switches provide robust security capabilities to protect sensitive data and applications. |
Scalability |
Nexus 7000 switches are designed to scale seamlessly to meet the growing demands of modern data center environments, supporting thousands of ports and millions of forwarding entries. |
Virtual Port Channel (vPC) |
vPC technology allows the aggregation of multiple physical links between Nexus 7000 switches and downstream devices, providing increased bandwidth, redundancy, and load balancing. |
Unified Fabric |
Nexus 7000 switches support a unified fabric architecture, enabling convergence of storage, data, and management traffic over a single Ethernet-based infrastructure, simplifying network design and operations. |
Table 2 summarizes the key features that make Nexus 9000 switches a preferred choice for modern data center networking environments.
Feature |
Description |
High Port Density |
Offers high-density 10/25/40/100 Gigabit Ethernet ports for increased scalability and bandwidth. |
Advanced ASIC Technology |
Utilizes programmable ASICs (Application-Specific Integrated Circuits) for enhanced performance, flexibility, and programmability. |
Application Centric Infrastructure (ACI) Support |
Provides seamless integration with Cisco's ACI architecture for policy-driven automation, management, and orchestration of network resources. |
VXLAN Support |
Supports Virtual Extensible LAN (VXLAN) encapsulation for network virtualization and overlay deployment, enabling efficient workload mobility and scalability. |
Cloud Integration |
Facilitates integration with leading cloud platforms such as AWS, Azure, and Google Cloud for seamless hybrid cloud deployments and workload mobility. |
Enhanced Security |
Offers advanced security features, including TrustSec, MACsec, and role-based access control (RBAC), to safeguard network assets and data. |
Automation and Orchestration |
Enables automation of provisioning, configuration, and management tasks through APIs (Application Programming Interfaces) and integration with orchestration platforms such as Ansible and Puppet. |
Modular Architecture |
Adopts a modular architecture with options for fixed and modular chassis designs, allowing flexibility in deployment and scalability. |
Scalability |
Provides scalable solutions for small to large-scale data center deployments, accommodating evolving business needs and growth. |
Telemetry and Analytics |
Offers built-in telemetry and analytics capabilities for real-time monitoring, troubleshooting, and optimization of network performance and resource utilization. |
To facilitate an informed migration decision, let's delve into the primary variances between the Nexus 7000 and Nexus 9000 series switches:
Feature |
Nexus 7000 |
Nexus 9000 |
Switch Fabric |
Fabric-1 and Fabric-2 Modules |
Unified Fabric Module (NFM-P or NFM-T) |
ASIC |
M-series and F-series ASICs |
Broadcom Trident and Tomahawk ASICs |
Operating System |
Cisco NX-OS |
Cisco NX-OS or Cisco ACI (Application Centric |
Table 3 provides a quick overview of the key specifications of two models of Nexus 9000 switches: N9K-C93180YC-EX and N9K-C9372PX.
Specification |
Nexus 9000 (N9K-C93180YC-EX) |
Nexus 9000 (N9K-C9372PX) |
Ports |
48 x 10/25-Gbps SFP+ |
48 x 1/10-Gbps SFP+ |
6 x 40/100-Gbps QSFP28 |
6 x 40/100-Gbps QSFP+ |
|
Switching Capacity |
3.6 Tbps |
1.44 Tbps |
Forwarding Rate |
2.68 Bpps |
1.44 Bpps |
Packet Buffer |
16 MB |
9 MB |
Latency |
450 ns (10 Gbps) |
500 ns (10 Gbps) |
950 ns (40 Gbps) |
1.5 µs (40 Gbps) |
|
1.5 µs (100 Gbps) |
2.3 µs (100 Gbps) |
|
Form Factor |
1 RU |
1 RU |
Power Supply |
Dual redundant, hot-swappable |
Dual redundant, hot-swappable |
Maximum Power |
500W |
720W |
Operating System |
Cisco NX-OS or Cisco ACI |
Cisco NX-OS or Cisco ACI |
Software Features |
VXLAN, EVPN, MPLS |
VXLAN, EVPN, MPLS |
BGP, OSPF, ISIS |
BGP, OSPF, ISIS |
|
ACL, QoS |
ACL, QoS |
Table 4 outlines the software capabilities of the Nexus 7000 and Nexus 9000 switches:
Software Capability |
Nexus 7000 |
Nexus 9000 |
Operating System |
Cisco NX-OS |
Cisco NX-OS or Cisco ACI (Application Centric Infrastructure) |
Virtualization Support |
Virtual Device Context (VDC) support |
VXLAN encapsulation |
Automation |
Limited automation features |
Enhanced automation capabilities |
Programmability |
Limited programmability |
Support for programmable ASICs |
SDN Support |
Limited support for software-defined networking (SDN) |
Extensive support for SDN and Cisco ACI |
Management |
Cisco Prime Data Center Network Manager |
Cisco Data Center Network Manager (DCNM) |
Security Features |
TrustSec, MACsec |
Enhanced security features such as TrustSec and MACsec |
Scalability |
Scalable architecture with FabricPath technology |
Improved scalability with support for ACI and VXLAN |
Cloud Integration |
Limited integration with cloud platforms |
Seamless integration with cloud platforms |
Table 5 provides a brief summary of the performance characteristics of the Nexus 7000 and Nexus 9000 switches, including switching capacity, port density, latency, packet buffer memory, VLAN and VXLAN support, fabric modules, and ASIC options.
Performance Feature |
Nexus 7000 |
Nexus 9000 |
Switching Capacity |
Up to 15 Tbps |
Up to 50 Tbps |
Maximum Ports |
Up to 768 10 Gigabit Ethernet (GE) ports |
Up to 2304 10 GE or 576 40 GE ports |
Latency |
Sub-microsecond |
Sub-microsecond |
Packet Buffer Memory |
Up to 144 GB |
Up to 144 GB |
Maximum VLANs |
Up to 4096 |
Up to 4096 |
Support for VXLAN |
Limited support |
Full support |
Fabric Modules |
Fabric-1, Fabric-2 |
NFM-P, NFM-T, NFM-O, NFM-E |
ASIC |
M-series, F-series |
Trident, Tomahawk, Cloudscale, Innovium, and Jericho |
Table 6 outlines the highest port density between Nexus 700 and Nexus 9000:
Switch Model |
Maximum Port Density |
Nexus 7000 |
Up to 768 10 Gigabit Ethernet ports or 192 40 Gigabit Ethernet ports |
Nexus 9000 |
Up to 2304 10/25 Gigabit Ethernet ports or 576 40/100 Gigabit Ethernet ports |
The Nexus 9000 series switches offer significantly higher port density compared to their predecessor, the Nexus 7000 series. This increase in port density is primarily attributed to advancements in networking technology and hardware architecture.
One key factor contributing to the higher port density in Nexus 9000 switches is the utilization of more compact and power-efficient ASICs (Application-Specific Integrated Circuits). These specialized chips are designed to handle the processing and forwarding of network traffic more efficiently, allowing for a greater number of ports to be accommodated within the switch chassis.
Furthermore, innovations in switch design and component integration have enabled Cisco to optimize the physical layout of Nexus 9000 switches, maximizing the available space for port interfaces while minimizing the overall footprint of the device. This streamlined design approach enhances scalability and flexibility, making Nexus 9000 switches ideal for high-density deployments in modern data center environments.
Table 7 lists the bandwidth specifications of the Nexus 7000 and Nexus 9000 series switches:
Switch Model |
Maximum Bandwidth per Slot (Gbps) |
Maximum System Bandwidth (Tbps) |
Fabric Module |
Nexus 7000 |
Up to 550 |
Up to 17.6 |
Fabric-1, Fabric-2 |
Nexus 9000 |
Up to 3,840 |
Up to 60 (Nexus 9500) |
NFM-P, NFM-T |
Table 8 provides a comparison of the common protocols supported by both Nexus 7k and Nexus 9k series switches. It's important to note that specific protocol support may vary depending on the software version and configuration of the switches.
Protocol |
Nexus 7000 |
Nexus 9000 |
BGP (Border Gateway Protocol) |
Supported |
Supported |
OSPF (Open Shortest Path First) |
Supported |
Supported |
EIGRP (Enhanced Interior Gateway Routing Protocol) |
Supported |
Supported |
ISIS (Intermediate System to Intermediate System) |
Supported |
Supported |
RIP (Routing Information Protocol) |
Supported |
Supported |
MPLS (Multiprotocol Label Switching) |
Supported |
Supported |
VXLAN (Virtual Extensible LAN) |
Supported |
Supported |
FabricPath |
Supported |
Not Supported |
FCoE (Fibre Channel over Ethernet) |
Supported |
Supported |
VRRP (Virtual Router Redundancy Protocol) |
Supported |
Supported |
HSRP (Hot Standby Router Protocol) |
Supported |
Supported |
GLBP (Gateway Load Balancing Protocol) |
Supported |
Supported |
PIM (Protocol Independent Multicast) |
Supported |
Supported |
LLDP (Link Layer Discovery Protocol) |
Supported |
Supported |
SNMP (Simple Network Management Protocol) |
Supported |
Supported |
Upgrading from Nexus 7000 to Nexus 9000 switches offers a plethora of benefits that can significantly enhance the efficiency, security, and scalability of an organization's network infrastructure. Let's delve into these benefits in detail:
Nexus 9000 switches typically offer higher throughput, lower latency, and enhanced processing capabilities compared to Nexus 7000 switches. This translates to faster data transmission, reduced response times, and improved overall network performance, especially in high-demand environments
Nexus 9000 switches come equipped with advanced security features such as TrustSec, MACsec, and integrated threat defense mechanisms. These features provide robust protection against unauthorized access, data breaches, and cyber threats, ensuring the integrity and confidentiality of sensitive information.
With support for higher port densities and increased bandwidth options, Nexus 9000 switches offer greater scalability and flexibility to accommodate the evolving needs of modern data centers. Organizations can seamlessly expand their network infrastructure to support growing workloads, applications, and user demands without compromising performance or reliability.
Nexus 9000 switches use automation and programmability capabilities to simplify network management tasks, streamline configuration workflows, and automate routine operations. This reduces the burden on IT teams, improves operational efficiency, and enables faster deployment of new services and applications.
Organizations can deploy policy-driven network automation, centralized management, and dynamic resource allocation by utilizing Nexus 9000 switches that support software-defined networking (SDN) technologies like Cisco's Application Centric Infrastructure (ACI). This facilitates greater agility in responding to changing business requirements.
While upgrading to Nexus 9000 switches may entail initial investment costs, the long-term benefits, including improved performance, scalability, and security, often outweigh the upfront expenses. Additionally, Nexus 9000 switches offer a future-proof platform with support for emerging technologies and standards, ensuring continued relevance and value for years to come.
Nexus 9000 switches seamlessly integrate with existing Cisco ecosystem components, including routers, firewalls, and management tools, ensuring interoperability and compatibility across the network infrastructure. This simplifies integration efforts and facilitates cohesive end-to-end solutions for diverse business requirements.
Before embarking on the migration journey, it's essential to conduct a thorough assessment of the existing network infrastructure, including:
When considering a migration from older Nexus switches to newer models, such as the Nexus 7000 vs Nexus 9000, the choice depends on various factors specific to the organization's requirements and objectives. While Nexus 7000 switches have served as reliable workhorses in data center environments for years, the Nexus 9000 series offers advancements in technology and features that may better align with modern networking demands.
For organizations seeking enhanced performance, scalability, and support for emerging technologies like software-defined networking (SDN) and automation, migrating to Nexus 9000 switches could be the preferred choice. With features such as programmable ASICs, support for Cisco's Application Centric Infrastructure (ACI), and seamless integration with cloud environments, Nexus 9000 switches enable organizations to build agile, resilient, and future-proof data center networks.
However, the decision to migrate ultimately depends on factors such as budget, existing infrastructure, application requirements, and long-term strategic goals.
When considering the purchase of Nexus switches, it's crucial to choose a reputable vendor that offers quality products and reliable support. One recommended option is ORM Systems, a trusted provider of refurbished Cisco hardware. With a focus on quality assurance and customer satisfaction, ORM Systems ensures that customers receive cost-effective solutions without compromising on performance or reliability.
Contact us now and get a discounted price.
ORM Systems is a global IT hardware and software solution provider. Our core focus is providing authentic, reliable, and cost-effective IT hardware products along with enterprise software solutions. Our superior customer service team has built a strong correlation between our customers and suppliers. We have laid out our physical presence by having operational branches and warehouses in the UK, USA, Europe and the Middle East. We stock huge inventory globally and provide fast delivery, an absolute supply chain and logistics for our consumers all around the world, with a guarantee of meeting your standard requirements.
Migrating from Nexus 7000 to 9000 switches is a strategic decision that can significantly enhance the efficiency, security, and scalability of an enterprise network. By understanding the key differences, following a structured migration process, and leveraging the benefits of Nexus 9000 series switches, organizations can future-proof their infrastructure and adapt to the evolving demands of the digital landscape.
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Q. Is it necessary to migrate from Nexus 7000 to 9000 switches?
A. While it's not mandatory, migrating to Nexus 9000 switches offers numerous benefits in terms of performance, security, and scalability, making it a worthwhile investment for many organizations.
Q. What are some common challenges associated with the migration process?
A. Common challenges include compatibility issues, data migration complexities, and potential disruptions to network operations. However, thorough planning and testing can help mitigate these challenges effectively.
Q. Can Nexus 9000 switches integrate with existing network infrastructure?
A. Yes, Nexus 9000 switches are designed to seamlessly integrate with existing Cisco infrastructure, ensuring compatibility and interoperability across the network environment.
Q. How long does the migration process typically take?
A. The duration of the migration process varies depending on factors such as the size of the network, the complexity of configurations, and the extent of testing required. It's advisable to allocate sufficient time for planning and execution to ensure a smooth transition.
Q. What support options are available for Nexus 9000 switches?
A. Cisco offers comprehensive support services for Nexus 9000 switches, including software updates, technical assistance, and warranty coverage. Additionally, partnering with reputable vendors like ORM Systems can provide additional support and expertise.
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